--===============2482552532727027938==
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Content-Transfer-Encoding: quoted-printable
I believe a tach (short for tachometer) and rev counter refer to the same
instrument.
And, yes, all MGAs came with a tach as original equipment.
EjR
On Tue, Aug 1, 2023 at 2:04=E2=80=AFPM <mgs-request@autox.team.net> wrote:
> Send Mgs mailing list submissions to
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> Today's Topics:
>
> 1. Re: Mgs Digest, Vol 194, Issue 12 (Eric Russell)
> 2. Re: Mgs Digest, Vol 194, Issue 12 (Paul Hunt)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 31 Jul 2023 16:21:38 -0400
> From: Eric Russell <ejrussell61@gmail.com>
> To: mgs@autox.team.net
> Subject: Re: [Mgs] Mgs Digest, Vol 194, Issue 12
> Message-ID:
> <
> CAP7dBXCk4hzrb9Sj+Ptrny-d40Pms5jk5jhttjOVnATrLE5eNA@mail.gmail.com>
> Content-Type: text/plain; charset=3D"utf-8"
>
> My guess is an MGA tach face (Jaeger) or perhaps MGA tach face & case was
> used with a different tach's internals. MGB tachs were 'Smiths'.
>
> MGB tach for MGA is described here:
> http://mgaguru.com/mgtech/electric/et202c.htm
>
> EjR
>
> On Mon, Jul 31, 2023 at 2:08?PM <mgs-request@autox.team.net> wrote:
>
> > Send Mgs mailing list submissions to
> > mgs@autox.team.net
> >
> > To subscribe or unsubscribe via the World Wide Web, visit
> > http://autox.team.net/mailman/listinfo/mgs
> > or, via email, send a message with subject or body 'help' to
> > mgs-request@autox.team.net
> >
> > You can reach the person managing the list at
> > mgs-owner@autox.team.net
> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of Mgs digest..."
> >
> >
> > Donate: http://www.team.net/donate.html
> > Suggested annual donation $12.75
> > Archive: http://www.team.net/archive
> > Forums: http://www.team.net/forums
> >
> >
> >
> > Today's Topics:
> >
> > 1. mga 1500 with early 5 main mgb engine (dave northrup)
> > 2. Re: mga 1500 with early 5 main mgb engine (Max Heim)
> > 3. Re: mga 1500 with early 5 main mgb engine (Paul Hunt)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Mon, 31 Jul 2023 00:22:55 +0000
> > From: dave northrup <dave@ranteer.com>
> > To: "mgs@autox.team.net" <mgs@autox.team.net>
> > Subject: [Mgs] mga 1500 with early 5 main mgb engine
> > Message-ID: <8ba46f6ebee14b168b5e753f84b72499@ranteer.com>
> > Content-Type: text/plain; charset=3D"us-ascii"
> >
> > Negative ground, car runs smoothly, need to install the electric tach
> > which supposedly was previously installed in this car and working.
> >
> > On the back view, what hooks up where? I am pretty sure the tab, and t=
he
> > screw, are ground.
> >
> > The other two - one needs to go to power and the other to the coil. I
> > think one is a female bullet connector; the other is male. Which goes =
to
> > power and which to the coil?
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
> > URL: <
> >
> http://autox.team.net/pipermail/mgs/attachments/20230731/850f2071/attachm=
ent-0001.htm
> > >
> > -------------- next part --------------
> > A non-text attachment was scrubbed...
> > Name: tach front view.jpg
> > Type: image/jpeg
> > Size: 827772 bytes
> > Desc: tach front view.jpg
> > URL: <
> >
> http://autox.team.net/pipermail/mgs/attachments/20230731/850f2071/attachm=
ent-0002.jpg
> > >
> > -------------- next part --------------
> > A non-text attachment was scrubbed...
> > Name: tach rear view.jpg
> > Type: image/jpeg
> > Size: 826250 bytes
> > Desc: tach rear view.jpg
> > URL: <
> >
> http://autox.team.net/pipermail/mgs/attachments/20230731/850f2071/attachm=
ent-0003.jpg
> > >
> >
> > ------------------------------
> >
> > Message: 2
> > Date: Sun, 30 Jul 2023 17:52:40 -0700
> > From: Max Heim <mvheim@sonic.net>
> > To: "mgs@autox.team.net" <mgs@autox.team.net>
> > Subject: Re: [Mgs] mga 1500 with early 5 main mgb engine
> > Message-ID: <983CC3D7-127F-4FD9-97E0-7533897C6FFD@sonic.net>
> > Content-Type: text/plain; charset=3D"utf-8"
> >
> > Hmm, the back of that tach case has obviously been modified. Are you su=
re
> > it still contains the matching internals? I say this because for 20
> years I
> > ran my Mk. I MGB with the original tach case, faceplate & needle, but
> with
> > a cheap auto parts store mini-tach inside the case. The only
> modifications
> > were two small screw holes to attach the mechanism.
> >
> > An original MGB Mk. I tach would have had a loop in the white wire,
> > attached to the back of the case with a thumb nut and a thin U-shaped
> brass
> > bracket. I am not seeing that on yours.
> >
> > Actually, I guess it is unclear whether you are talking about an MGA ta=
ch
> > or an early MGB tach...
> >
> > --
> > Max Heim
> > '66 MGB
> >
> > > On Jul 30, 2023, at 5:22 PM, dave northrup <dave@ranteer.com> wrote:
> > >
> > > Negative ground, car runs smoothly, need to install the electric tach
> > which supposedly was previously installed in this car and working.
> > >
> > > On the back view, what hooks up where? I am pretty sure the tab, and
> > the screw, are ground.
> > >
> > > The other two ? one needs to go to power and the other to the coil. =
I
> > think one is a female bullet connector; the other is male. Which goes =
to
> > power and which to the coil?
> > > <tach front view.jpg><tach rear
> > view.jpg>_______________________________________________
> > >
> > > Donate: http://www.team.net/donate.html <
> http://www.team.net/donate.html
> > >
> > > Suggested annual donation $12.75
> > >
> > > Archive: http://www.team.net/pipermail/mgs <
> > http://www.team.net/pipermail/mgs> http://autox.team.net/archive <
> > http://autox.team.net/archive>
> > >
> > > Unsubscribe:
> http://autox.team.net/mailman/options/mgs/mvheim@sonic.net
> > <http://autox.team.net/mailman/options/mgs/mvheim@sonic.net>
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
> > URL: <
> >
> http://autox.team.net/pipermail/mgs/attachments/20230730/c68decc6/attachm=
ent-0001.htm
> > >
> >
> > ------------------------------
> >
> > Message: 3
> > Date: Mon, 31 Jul 2023 08:38:26 +0100
> > From: Paul Hunt <paulbhunt73@gmail.com>
> > To: mgs@autox.team.net
> > Subject: Re: [Mgs] mga 1500 with early 5 main mgb engine
> > Message-ID: <86e97849-ea66-aad1-c9f9-0556feb82fb0@gmail.com>
> > Content-Type: text/plain; charset=3D"utf-8"; Format=3D"flowed"
> >
> > Not an MGB reference number, it looks like it has later internals than
> > but would still be the current-operated type i.e. RVI where the power t=
o
> > the coil comes via the tach.? The ignition switch would be connected to
> > the male bullet and the female bullet to the coil.? 12v (also from the
> > ignition) to the spade and earth to the case.? When used on the MGB
> > there were separate wires from the ignition switch to the spade and to
> > the male bullet but you can tee from one to the other rather than
> > running a separate wire.
> >
> > It would have been helpful to see the top half of the dial where it
> > might have shown RVI and what polarity it was.? I suspect it would show
> > positive earth, but those electronics would have been used with negativ=
e
> > earth in an MGB for example so it looks like it has been converted by
> > swapping the guts instead of swapping the wires round internally.? If
> > that tach was used after the car was converted to negative earth it
> > would make sense.
> >
> > PaulH.
> >
> > On 31/07/2023 01:22, dave northrup wrote:
> > >
> > > Negative ground, car runs smoothly, need to install the electric tach
> > > which supposedly was previously installed in this car and working.
> > >
> > > On the back view, what hooks up where?? I am pretty sure the tab, and
> > > the screw, are ground.
> > >
> > > The other two ? one needs to go to power and the other to the coil.? =
I
> > > think one is a female bullet connector; the other is male.? Which goe=
s
> > > to power and which to the coil?
> > >
> > >
> > > _______________________________________________
> > >
> > > Mgs@autox.team.net
> > > Donate:http://www.team.net/donate.html
> > > Suggested annual donation $12.75
> > >
> > > Archive:http://www.team.net/pipermail/mgs
> http://autox.team.net/archive
> > >
> > > Unsubscribe:
> > http://autox.team.net/mailman/options/mgs/paulbhunt73@gmail.com
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
> > URL: <
> >
> http://autox.team.net/pipermail/mgs/attachments/20230731/0ad7ea29/attachm=
ent-0001.htm
> > >
> >
> > ------------------------------
> >
> > Subject: Digest Footer
> >
> > _______________________________________________
> > Mgs mailing list
> > Mgs@autox.team.net
> > http://autox.team.net/mailman/listinfo/mgs
> >
> >
> > ------------------------------
> >
> > End of Mgs Digest, Vol 194, Issue 12
> > ************************************
> >
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://autox.team.net/pipermail/mgs/attachments/20230731/144c49a7/attachm=
ent-0001.htm
> >
>
> ------------------------------
>
> Message: 2
> Date: Tue, 1 Aug 2023 08:13:10 +0100
> From: Paul Hunt <paulbhunt73@gmail.com>
> To: mgs@autox.team.net
> Subject: Re: [Mgs] Mgs Digest, Vol 194, Issue 12
> Message-ID: <6c64e1d7-8d4b-bc1b-1ace-c98016e66b29@gmail.com>
> Content-Type: text/plain; charset=3D"utf-8"; Format=3D"flowed"
>
> Did any MGAs leave the factory with a tach?? Early MGBs had a rev
> counter before they got the tach.
>
> On 31/07/2023 21:21, Eric Russell wrote:
> > My guess is an MGA tach face (Jaeger) or perhaps MGA tach face & case
> > was used with a different tach's internals. MGB tachs were 'Smiths'.
> >
> > MGB tach for MGA is described here:
> > http://mgaguru.com/mgtech/electric/et202c.htm
> >
> > EjR
> >
> > On Mon, Jul 31, 2023 at 2:08?PM <mgs-request@autox.team.net> wrote:
> >
> > Send Mgs mailing list submissions to
> > mgs@autox.team.net
> >
> > To subscribe or unsubscribe via the World Wide Web, visit
> > http://autox.team.net/mailman/listinfo/mgs
> > or, via email, send a message with subject or body 'help' to
> > mgs-request@autox.team.net
> >
> > You can reach the person managing the list at
> > mgs-owner@autox.team.net
> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of Mgs digest..."
> >
> >
> > Donate: http://www.team.net/donate.html
> > Suggested annual donation? $12.75
> > Archive: http://www.team.net/archive
> > Forums: http://www.team.net/forums
> >
> >
> >
> > Today's Topics:
> >
> > ? ?1. mga 1500 with early 5 main mgb engine (dave northrup)
> > ? ?2. Re: mga 1500 with early 5 main mgb engine (Max Heim)
> > ? ?3. Re: mga 1500 with early 5 main mgb engine (Paul Hunt)
> >
> >
> >
> ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Mon, 31 Jul 2023 00:22:55 +0000
> > From: dave northrup <dave@ranteer.com>
> > To: "mgs@autox.team.net" <mgs@autox.team.net>
> > Subject: [Mgs] mga 1500 with early 5 main mgb engine
> > Message-ID: <8ba46f6ebee14b168b5e753f84b72499@ranteer.com>
> > Content-Type: text/plain; charset=3D"us-ascii"
> >
> > Negative ground, car runs smoothly, need to install the electric
> > tach which supposedly was previously installed in this car and
> > working.
> >
> > On the back view, what hooks up where?? I am pretty sure the tab,
> > and the screw, are ground.
> >
> > The other two - one needs to go to power and the other to the
> > coil.? I think one is a female bullet connector; the other is
> > male.? Which goes to power and which to the coil?
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
> > URL:
> > <
> http://autox.team.net/pipermail/mgs/attachments/20230731/850f2071/attachm=
ent-0001.htm
> >
> > -------------- next part --------------
> > A non-text attachment was scrubbed...
> > Name: tach front view.jpg
> > Type: image/jpeg
> > Size: 827772 bytes
> > Desc: tach front view.jpg
> > URL:
> > <
> http://autox.team.net/pipermail/mgs/attachments/20230731/850f2071/attachm=
ent-0002.jpg
> >
> > -------------- next part --------------
> > A non-text attachment was scrubbed...
> > Name: tach rear view.jpg
> > Type: image/jpeg
> > Size: 826250 bytes
> > Desc: tach rear view.jpg
> > URL:
> > <
> http://autox.team.net/pipermail/mgs/attachments/20230731/850f2071/attachm=
ent-0003.jpg
> >
> >
> > ------------------------------
> >
> > Message: 2
> > Date: Sun, 30 Jul 2023 17:52:40 -0700
> > From: Max Heim <mvheim@sonic.net>
> > To: "mgs@autox.team.net" <mgs@autox.team.net>
> > Subject: Re: [Mgs] mga 1500 with early 5 main mgb engine
> > Message-ID: <983CC3D7-127F-4FD9-97E0-7533897C6FFD@sonic.net>
> > Content-Type: text/plain; charset=3D"utf-8"
> >
> > Hmm, the back of that tach case has obviously been modified. Are
> > you sure it still contains the matching internals? I say this
> > because for 20 years I ran my Mk. I MGB with the original tach
> > case, faceplate & needle, but with a cheap auto parts store
> > mini-tach inside the case. The only modifications were two small
> > screw holes to attach the mechanism.
> >
> > An original MGB Mk. I tach would have had a loop in the white
> > wire, attached to the back of the case with a thumb nut and a thin
> > U-shaped brass bracket. I am not seeing that on yours.
> >
> > Actually, I guess it is unclear whether you are talking about an
> > MGA tach or an early MGB tach...
> >
> > --
> > Max Heim
> > '66 MGB
> >
> > > On Jul 30, 2023, at 5:22 PM, dave northrup <dave@ranteer.com>
> wrote:
> > >
> > > Negative ground, car runs smoothly, need to install the electric
> > tach which supposedly was previously installed in this car and
> > working.
> > >
> > > On the back view, what hooks up where?? I am pretty sure the
> > tab, and the screw, are ground.
> > >
> > > The other two ? one needs to go to power and the other to the
> > coil.? I think one is a female bullet connector; the other is
> > male.? Which goes to power and which to the coil?
> > > <tach front view.jpg><tach rear
> > view.jpg>_______________________________________________
> > >
> > > Donate: http://www.team.net/donate.html
> > <http://www.team.net/donate.html>
> > > Suggested annual donation? $12.75
> > >
> > > Archive: http://www.team.net/pipermail/mgs
> > <http://www.team.net/pipermail/mgs> http://autox.team.net/archive
> > <http://autox.team.net/archive>
> > >
> > > Unsubscribe:
> > http://autox.team.net/mailman/options/mgs/mvheim@sonic.net
> > <http://autox.team.net/mailman/options/mgs/mvheim@sonic.net>
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
> > URL:
> > <
> http://autox.team.net/pipermail/mgs/attachments/20230730/c68decc6/attachm=
ent-0001.htm
> >
> >
> > ------------------------------
> >
> > Message: 3
> > Date: Mon, 31 Jul 2023 08:38:26 +0100
> > From: Paul Hunt <paulbhunt73@gmail.com>
> > To: mgs@autox.team.net
> > Subject: Re: [Mgs] mga 1500 with early 5 main mgb engine
> > Message-ID: <86e97849-ea66-aad1-c9f9-0556feb82fb0@gmail.com>
> > Content-Type: text/plain; charset=3D"utf-8"; Format=3D"flowed"
> >
> > Not an MGB reference number, it looks like it has later internals
> > than
> > but would still be the current-operated type i.e. RVI where the
> > power to
> > the coil comes via the tach.? The ignition switch would be
> > connected to
> > the male bullet and the female bullet to the coil.? 12v (also from
> > the
> > ignition) to the spade and earth to the case.? When used on the MGB
> > there were separate wires from the ignition switch to the spade
> > and to
> > the male bullet but you can tee from one to the other rather than
> > running a separate wire.
> >
> > It would have been helpful to see the top half of the dial where it
> > might have shown RVI and what polarity it was.? I suspect it would
> > show
> > positive earth, but those electronics would have been used with
> > negative
> > earth in an MGB for example so it looks like it has been converted =
by
> > swapping the guts instead of swapping the wires round internally.? =
If
> > that tach was used after the car was converted to negative earth it
> > would make sense.
> >
> > PaulH.
> >
> > On 31/07/2023 01:22, dave northrup wrote:
> > >
> > > Negative ground, car runs smoothly, need to install the electric
> > tach
> > > which supposedly was previously installed in this car and working=
.
> > >
> > > On the back view, what hooks up where?? I am pretty sure the
> > tab, and
> > > the screw, are ground.
> > >
> > > The other two ? one needs to go to power and the other to the
> > coil.? I
> > > think one is a female bullet connector; the other is male.?
> > Which goes
> > > to power and which to the coil?
> > >
> > >
> > > _______________________________________________
> > >
> > > Mgs@autox.team.net
> > > Donate:http://www.team.net/donate.html
> > > Suggested annual donation? $12.75
> > >
> > > Archive:http://www.team.net/pipermail/mgs
> > http://autox.team.net/archive
> > >
> > >
> > Unsubscribe:
> http://autox.team.net/mailman/options/mgs/paulbhunt73@gmail.com
> > -------------- next part --------------
> > An HTML attachment was scrubbed...
> > URL:
> > <
> http://autox.team.net/pipermail/mgs/attachments/20230731/0ad7ea29/attachm=
ent-0001.htm
> >
> >
> > ------------------------------
> >
> > Subject: Digest Footer
> >
> > _______________________________________________
> > Mgs mailing list
> > Mgs@autox.team.net
> > http://autox.team.net/mailman/listinfo/mgs
> >
> >
> > ------------------------------
> >
> > End of Mgs Digest, Vol 194, Issue 12
> > ************************************
> >
> >
> > _______________________________________________
> >
> > Mgs@autox.team.net
> > Donate:http://www.team.net/donate.html
> > Suggested annual donation $12.75
> >
> > Archive:http://www.team.net/pipermail/mgs http://autox.team.net/archiv=
e
> >
> > Unsubscribe:
> http://autox.team.net/mailman/options/mgs/paulbhunt73@gmail.com
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://autox.team.net/pipermail/mgs/attachments/20230801/4ae103d8/attachm=
ent-0001.htm
> >
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> Mgs mailing list
> Mgs@autox.team.net
> http://autox.team.net/mailman/listinfo/mgs
>
>
> ------------------------------
>
> End of Mgs Digest, Vol 195, Issue 1
> ***********************************
>
--0000000000004d7ae40601e079b9
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:large">I b=
elieve a tach (short for tachometer) and rev counter refer to the same inst=
rument.=C2=A0</div><div class=3D"gmail_default" style=3D"font-size:large"><=
br></div><div class=3D"gmail_default" style=3D"font-size:large">And, yes, a=
ll MGAs came with a tach as original equipment.</div><div class=3D"gmail_de=
fault" style=3D"font-size:large"><br></div><div class=3D"gmail_default" sty=
le=3D"font-size:large">EjR=C2=A0</div></div><br><div class=3D"gmail_quote">=
<div dir=3D"ltr" class=3D"gmail_attr">On Tue, Aug 1, 2023 at 2:04=E2=80=AFP=
M <<a href=3D"mailto:mgs-request@autox.team.net";>mgs-request@autox.team.=
net</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"marg=
in:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1e=
x">Send Mgs mailing list submissions to<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"mailto:mgs@autox.team.net"; target=3D=
"_blank">mgs@autox.team.net</a><br>
<br>
To subscribe or unsubscribe via the World Wide Web, visit<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"http://autox.team.net/mailman/listin=
fo/mgs" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/mailman/=
listinfo/mgs</a><br>
or, via email, send a message with subject or body 'help' to<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"mailto:mgs-request@autox.team.net"; t=
arget=3D"_blank">mgs-request@autox.team.net</a><br>
<br>
You can reach the person managing the list at<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"mailto:mgs-owner@autox.team.net"; tar=
get=3D"_blank">mgs-owner@autox.team.net</a><br>
<br>
When replying, please edit your Subject line so it is more specific<br>
than "Re: Contents of Mgs digest..."<br>
<br>
<br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/archive"; rel=3D"noreferrer" target=
=3D"_blank">http://www.team.net/archive</a><br>
Forums: <a href=3D"http://www.team.net/forums"; rel=3D"noreferrer" target=3D=
"_blank">http://www.team.net/forums</a><br>
<br>
<br>
<br>
Today's Topics:<br>
<br>
=C2=A0 =C2=A01. Re: Mgs Digest, Vol 194, Issue 12 (Eric Russell)<br>
=C2=A0 =C2=A02. Re: Mgs Digest, Vol 194, Issue 12 (Paul Hunt)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Mon, 31 Jul 2023 16:21:38 -0400<br>
From: Eric Russell <<a href=3D"mailto:ejrussell61@gmail.com"; target=3D"_=
blank">ejrussell61@gmail.com</a>><br>
To: <a href=3D"mailto:mgs@autox.team.net"; target=3D"_blank">mgs@autox.team.=
net</a><br>
Subject: Re: [Mgs] Mgs Digest, Vol 194, Issue 12<br>
Message-ID:<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <<a href=3D"mailto:CAP7dBXCk4hzrb9Sj%2BPtrny=
-d40Pms5jk5jhttjOVnATrLE5eNA@mail.gmail.com" target=3D"_blank">CAP7dBXCk4hz=
rb9Sj+Ptrny-d40Pms5jk5jhttjOVnATrLE5eNA@mail.gmail.com</a>><br>
<br>
My guess is an MGA tach face (Jaeger) or perhaps MGA tach face & case w=
as<br>
used with a different tach's internals. MGB tachs were 'Smiths'=
.<br>
<br>
MGB tach for MGA is described here:<br>
<a href=3D"http://mgaguru.com/mgtech/electric/et202c.htm"; rel=3D"noreferrer=
" target=3D"_blank">http://mgaguru.com/mgtech/electric/et202c.htm</a><br>
<br>
EjR<br>
<br>
On Mon, Jul 31, 2023 at 2:08?PM <<a href=3D"mailto:mgs-request@autox.tea=
m.net" target=3D"_blank">mgs-request@autox.team.net</a>> wrote:<br>
<br>
> Send Mgs mailing list submissions to<br>
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><br>
> To subscribe or unsubscribe via the World Wide Web, visit<br>
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t/mailman/listinfo/mgs</a><br>
> or, via email, send a message with subject or body 'help' to<b=
r>
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><br>
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> When replying, please edit your Subject line so it is more specific<br=
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> Today's Topics:<br>
><br>
>=C2=A0 =C2=A0 1. mga 1500 with early 5 main mgb engine (dave northrup)<=
br>
>=C2=A0 =C2=A0 2. Re: mga 1500 with early 5 main mgb engine (Max Heim)<b=
r>
>=C2=A0 =C2=A0 3. Re: mga 1500 with early 5 main mgb engine (Paul Hunt)<=
br>
><br>
><br>
> ----------------------------------------------------------------------=
<br>
><br>
> Message: 1<br>
> Date: Mon, 31 Jul 2023 00:22:55 +0000<br>
> From: dave northrup <<a href=3D"mailto:dave@ranteer.com"; target=3D"=
_blank">dave@ranteer.com</a>><br>
> To: "<a href=3D"mailto:mgs@autox.team.net"; target=3D"_blank">mgs@=
autox.team.net</a>" <<a href=3D"mailto:mgs@autox.team.net"; target=
=3D"_blank">mgs@autox.team.net</a>><br>
> Subject: [Mgs] mga 1500 with early 5 main mgb engine<br>
> Message-ID: <<a href=3D"mailto:8ba46f6ebee14b168b5e753f84b72499@ran=
teer.com" target=3D"_blank">8ba46f6ebee14b168b5e753f84b72499@ranteer.com</a=
>><br>
> Content-Type: text/plain; charset=3D"us-ascii"<br>
><br>
> Negative ground, car runs smoothly, need to install the electric tach<=
br>
> which supposedly was previously installed in this car and working.<br>
><br>
> On the back view, what hooks up where?=C2=A0 I am pretty sure the tab,=
and the<br>
> screw, are ground.<br>
><br>
> The other two - one needs to go to power and the other to the coil.=C2=
=A0 I<br>
> think one is a female bullet connector; the other is male.=C2=A0 Which=
goes to<br>
> power and which to the coil?<br>
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> URL: <<br>
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> ><br>
><br>
> ------------------------------<br>
><br>
> Message: 2<br>
> Date: Sun, 30 Jul 2023 17:52:40 -0700<br>
> From: Max Heim <<a href=3D"mailto:mvheim@sonic.net"; target=3D"_blan=
k">mvheim@sonic.net</a>><br>
> To: "<a href=3D"mailto:mgs@autox.team.net"; target=3D"_blank">mgs@=
autox.team.net</a>" <<a href=3D"mailto:mgs@autox.team.net"; target=
=3D"_blank">mgs@autox.team.net</a>><br>
> Subject: Re: [Mgs] mga 1500 with early 5 main mgb engine<br>
> Message-ID: <<a href=3D"mailto:983CC3D7-127F-4FD9-97E0-7533897C6FFD=
@sonic.net" target=3D"_blank">983CC3D7-127F-4FD9-97E0-7533897C6FFD@sonic.ne=
t</a>><br>
> Content-Type: text/plain; charset=3D"utf-8"<br>
><br>
> Hmm, the back of that tach case has obviously been modified. Are you s=
ure<br>
> it still contains the matching internals? I say this because for 20 ye=
ars I<br>
> ran my Mk. I MGB with the original tach case, faceplate & needle, =
but with<br>
> a cheap auto parts store mini-tach inside the case. The only modificat=
ions<br>
> were two small screw holes to attach the mechanism.<br>
><br>
> An original MGB Mk. I tach would have had a loop in the white wire,<br=
>
> attached to the back of the case with a thumb nut and a thin U-shaped =
brass<br>
> bracket. I am not seeing that on yours.<br>
><br>
> Actually, I guess it is unclear whether you are talking about an MGA t=
ach<br>
> or an early MGB tach...<br>
><br>
> --<br>
> Max Heim<br>
> '66 MGB<br>
><br>
> > On Jul 30, 2023, at 5:22 PM, dave northrup <<a href=3D"mailto:=
dave@ranteer.com" target=3D"_blank">dave@ranteer.com</a>> wrote:<br>
> ><br>
> > Negative ground, car runs smoothly, need to install the electric =
tach<br>
> which supposedly was previously installed in this car and working.<br>
> ><br>
> > On the back view, what hooks up where?=C2=A0 I am pretty sure the=
tab, and<br>
> the screw, are ground.<br>
> ><br>
> > The other two ? one needs to go to power and the other to the coi=
l.=C2=A0 I<br>
> think one is a female bullet connector; the other is male.=C2=A0 Which=
goes to<br>
> power and which to the coil?<br>
> > <tach front view.jpg><tach rear<br>
> view.jpg>_______________________________________________<br>
> ><br>
> > <a href=3D"mailto:Mgs@autox.team.net"; target=3D"_blank">Mgs@autox=
.team.net</a> <mailto:<a href=3D"mailto:Mgs@autox.team.net"; target=3D"_b=
lank">Mgs@autox.team.net</a>><br>
> > Donate: <a href=3D"http://www.team.net/donate.html"; rel=3D"norefe=
rrer" target=3D"_blank">http://www.team.net/donate.html</a> <<a href=3D"=
//www.team.net/donate.html</a><br>
> ><br>
> > Suggested annual donation=C2=A0 $12.75<br>
> ><br>
> > Archive: <a href=3D"http://www.team.net/pipermail/mgs"; rel=3D"nor=
eferrer" target=3D"_blank">http://www.team.net/pipermail/mgs</a> <<br>
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> ><br>
> > Unsubscribe: <a href=3D"http://autox.team.net/mailman/options/mgs=
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> <<a href=3D"http://autox.team.net/mailman/options/mgs/mvheim@sonic.=
net" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/mailman/opt=
ions/mgs/mvheim@sonic.net</a>><br>
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> ><br>
><br>
> ------------------------------<br>
><br>
> Message: 3<br>
> Date: Mon, 31 Jul 2023 08:38:26 +0100<br>
> From: Paul Hunt <<a href=3D"mailto:paulbhunt73@gmail.com"; target=3D=
"_blank">paulbhunt73@gmail.com</a>><br>
> To: <a href=3D"mailto:mgs@autox.team.net"; target=3D"_blank">mgs@autox.=
team.net</a><br>
> Subject: Re: [Mgs] mga 1500 with early 5 main mgb engine<br>
> Message-ID: <<a href=3D"mailto:86e97849-ea66-aad1-c9f9-0556feb82fb0=
@gmail.com" target=3D"_blank">86e97849-ea66-aad1-c9f9-0556feb82fb0@gmail.co=
m</a>><br>
> Content-Type: text/plain; charset=3D"utf-8"; Format=3D"=
flowed"<br>
><br>
> Not an MGB reference number, it looks like it has later internals than=
<br>
> but would still be the current-operated type i.e. RVI where the power =
to<br>
> the coil comes via the tach.? The ignition switch would be connected t=
o<br>
> the male bullet and the female bullet to the coil.? 12v (also from the=
<br>
> ignition) to the spade and earth to the case.? When used on the MGB<br=
>
> there were separate wires from the ignition switch to the spade and to=
<br>
> the male bullet but you can tee from one to the other rather than<br>
> running a separate wire.<br>
><br>
> It would have been helpful to see the top half of the dial where it<br=
>
> might have shown RVI and what polarity it was.? I suspect it would sho=
w<br>
> positive earth, but those electronics would have been used with negati=
ve<br>
> earth in an MGB for example so it looks like it has been converted by<=
br>
> swapping the guts instead of swapping the wires round internally.? If<=
br>
> that tach was used after the car was converted to negative earth it<br=
>
> would make sense.<br>
><br>
> PaulH.<br>
><br>
> On 31/07/2023 01:22, dave northrup wrote:<br>
> ><br>
> > Negative ground, car runs smoothly, need to install the electric =
tach<br>
> > which supposedly was previously installed in this car and working=
.<br>
> ><br>
> > On the back view, what hooks up where?? I am pretty sure the tab,=
and<br>
> > the screw, are ground.<br>
> ><br>
> > The other two ? one needs to go to power and the other to the coi=
l.? I<br>
> > think one is a female bullet connector; the other is male.? Which=
goes<br>
> > to power and which to the coil?<br>
> ><br>
> ><br>
> > _______________________________________________<br>
> ><br>
> > <a href=3D"mailto:Mgs@autox.team.net"; target=3D"_blank">Mgs@autox=
.team.net</a><br>
> > Donate:<a href=3D"http://www.team.net/donate.html"; rel=3D"norefer=
rer" target=3D"_blank">http://www.team.net/donate.html</a><br>
> > Suggested annual donation=C2=A0 $12.75<br>
> ><br>
> > Archive:<a href=3D"http://www.team.net/pipermail/mgs"; rel=3D"nore=
ferrer" target=3D"_blank">http://www.team.net/pipermail/mgs</a>=C2=A0 <a hr=
ef=3D"http://autox.team.net/archive"; rel=3D"noreferrer" target=3D"_blank">h=
ttp://autox.team.net/archive</a><br>
> ><br>
> > Unsubscribe:<br>
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.com" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/mailman/op=
tions/mgs/paulbhunt73@gmail.com</a><br>
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> ><br>
><br>
> ------------------------------<br>
><br>
> Subject: Digest Footer<br>
><br>
> _______________________________________________<br>
> Mgs mailing list<br>
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> ------------------------------<br>
><br>
> End of Mgs Digest, Vol 194, Issue 12<br>
> ************************************<br>
><br>
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<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Tue, 1 Aug 2023 08:13:10 +0100<br>
From: Paul Hunt <<a href=3D"mailto:paulbhunt73@gmail.com"; target=3D"_bla=
nk">paulbhunt73@gmail.com</a>><br>
To: <a href=3D"mailto:mgs@autox.team.net"; target=3D"_blank">mgs@autox.team.=
net</a><br>
Subject: Re: [Mgs] Mgs Digest, Vol 194, Issue 12<br>
l.com" target=3D"_blank">6c64e1d7-8d4b-bc1b-1ace-c98016e66b29@gmail.com</a>=
><br>
d"<br>
<br>
Did any MGAs leave the factory with a tach?? Early MGBs had a rev <br>
counter before they got the tach.<br>
<br>
On 31/07/2023 21:21, Eric Russell wrote:<br>
> My guess is an MGA tach face (Jaeger) or perhaps MGA tach face & c=
ase <br>
> was used with a different tach's internals. MGB tachs were 'Sm=
iths'.<br>
><br>
> MGB tach for MGA is described here: <br>
> <a href=3D"http://mgaguru.com/mgtech/electric/et202c.htm"; rel=3D"noref=
errer" target=3D"_blank">http://mgaguru.com/mgtech/electric/et202c.htm</a><=
br>
><br>
> EjR<br>
><br>
> On Mon, Jul 31, 2023 at 2:08?PM <<a href=3D"mailto:mgs-request@auto=
x.team.net" target=3D"_blank">mgs-request@autox.team.net</a>> wrote:<br>
><br>
>=C2=A0 =C2=A0 =C2=A0Send Mgs mailing list submissions to<br>
>=C2=A0 =C2=A0 =C2=A0<a href=3D"mailto:mgs@autox.team.net"; target=3D"_bl=
ank">mgs@autox.team.net</a><br>
><br>
>=C2=A0 =C2=A0 =C2=A0To subscribe or unsubscribe via the World Wide Web,=
visit<br>
>=C2=A0 =C2=A0 =C2=A0<a href=3D"http://autox.team.net/mailman/listinfo/m=
gs" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/mailman/list=
info/mgs</a><br>
>=C2=A0 =C2=A0 =C2=A0or, via email, send a message with subject or body =
'help' to<br>
>=C2=A0 =C2=A0 =C2=A0<a href=3D"mailto:mgs-request@autox.team.net"; targe=
t=3D"_blank">mgs-request@autox.team.net</a><br>
><br>
>=C2=A0 =C2=A0 =C2=A0You can reach the person managing the list at<br>
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=3D"_blank">mgs-owner@autox.team.net</a><br>
><br>
>=C2=A0 =C2=A0 =C2=A0When replying, please edit your Subject line so it =
is more specific<br>
>=C2=A0 =C2=A0 =C2=A0than "Re: Contents of Mgs digest..."<br>
><br>
><br>
>=C2=A0 =C2=A0 =C2=A0Donate: <a href=3D"http://www.team.net/donate.html"=
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r>
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><br>
><br>
><br>
>=C2=A0 =C2=A0 =C2=A0Today's Topics:<br>
><br>
>=C2=A0 =C2=A0 =C2=A0? ?1. mga 1500 with early 5 main mgb engine (dave n=
orthrup)<br>
>=C2=A0 =C2=A0 =C2=A0? ?2. Re: mga 1500 with early 5 main mgb engine (Ma=
x Heim)<br>
>=C2=A0 =C2=A0 =C2=A0? ?3. Re: mga 1500 with early 5 main mgb engine (Pa=
ul Hunt)<br>
><br>
><br>
>=C2=A0 =C2=A0 =C2=A0---------------------------------------------------=
-------------------<br>
><br>
>=C2=A0 =C2=A0 =C2=A0Message: 1<br>
>=C2=A0 =C2=A0 =C2=A0Date: Mon, 31 Jul 2023 00:22:55 +0000<br>
>=C2=A0 =C2=A0 =C2=A0From: dave northrup <<a href=3D"mailto:dave@rant=
eer.com" target=3D"_blank">dave@ranteer.com</a>><br>
>=C2=A0 =C2=A0 =C2=A0To: "<a href=3D"mailto:mgs@autox.team.net"; tar=
get=3D"_blank">mgs@autox.team.net</a>" <<a href=3D"mailto:mgs@autox=
.team.net" target=3D"_blank">mgs@autox.team.net</a>><br>
>=C2=A0 =C2=A0 =C2=A0Subject: [Mgs] mga 1500 with early 5 main mgb engin=
e<br>
>=C2=A0 =C2=A0 =C2=A0Message-ID: <<a href=3D"mailto:8ba46f6ebee14b168=
b5e753f84b72499@ranteer.com" target=3D"_blank">8ba46f6ebee14b168b5e753f84b7=
2499@ranteer.com</a>><br>
>=C2=A0 =C2=A0 =C2=A0Content-Type: text/plain; charset=3D"us-ascii&=
quot;<br>
><br>
>=C2=A0 =C2=A0 =C2=A0Negative ground, car runs smoothly, need to install=
the electric<br>
>=C2=A0 =C2=A0 =C2=A0tach which supposedly was previously installed in t=
his car and<br>
>=C2=A0 =C2=A0 =C2=A0working.<br>
><br>
>=C2=A0 =C2=A0 =C2=A0On the back view, what hooks up where?? I am pretty=
sure the tab,<br>
>=C2=A0 =C2=A0 =C2=A0and the screw, are ground.<br>
><br>
>=C2=A0 =C2=A0 =C2=A0The other two - one needs to go to power and the ot=
her to the<br>
>=C2=A0 =C2=A0 =C2=A0coil.? I think one is a female bullet connector; th=
e other is<br>
>=C2=A0 =C2=A0 =C2=A0male.? Which goes to power and which to the coil?<b=
r>
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>=C2=A0 =C2=A0 =C2=A0Desc: tach front view.jpg<br>
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071/attachment-0002.jpg</a>><br>
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>=C2=A0 =C2=A0 =C2=A0Size: 826250 bytes<br>
>=C2=A0 =C2=A0 =C2=A0Desc: tach rear view.jpg<br>
>=C2=A0 =C2=A0 =C2=A0URL:<br>
>=C2=A0 =C2=A0 =C2=A0<<a href=3D"http://autox.team.net/pipermail/mgs/=
attachments/20230731/850f2071/attachment-0003.jpg" rel=3D"noreferrer" targe=
t=3D"_blank">http://autox.team.net/pipermail/mgs/attachments/20230731/850f2=
071/attachment-0003.jpg</a>><br>
><br>
>=C2=A0 =C2=A0 =C2=A0------------------------------<br>
><br>
>=C2=A0 =C2=A0 =C2=A0Message: 2<br>
>=C2=A0 =C2=A0 =C2=A0Date: Sun, 30 Jul 2023 17:52:40 -0700<br>
>=C2=A0 =C2=A0 =C2=A0From: Max Heim <<a href=3D"mailto:mvheim@sonic.n=
et" target=3D"_blank">mvheim@sonic.net</a>><br>
>=C2=A0 =C2=A0 =C2=A0To: "<a href=3D"mailto:mgs@autox.team.net"; tar=
get=3D"_blank">mgs@autox.team.net</a>" <<a href=3D"mailto:mgs@autox=
.team.net" target=3D"_blank">mgs@autox.team.net</a>><br>
>=C2=A0 =C2=A0 =C2=A0Subject: Re: [Mgs] mga 1500 with early 5 main mgb e=
ngine<br>
>=C2=A0 =C2=A0 =C2=A0Message-ID: <<a href=3D"mailto:983CC3D7-127F-4FD=
9-97E0-7533897C6FFD@sonic.net" target=3D"_blank">983CC3D7-127F-4FD9-97E0-75=
33897C6FFD@sonic.net</a>><br>
>=C2=A0 =C2=A0 =C2=A0Content-Type: text/plain; charset=3D"utf-8&quo=
t;<br>
><br>
>=C2=A0 =C2=A0 =C2=A0Hmm, the back of that tach case has obviously been =
modified. Are<br>
>=C2=A0 =C2=A0 =C2=A0you sure it still contains the matching internals? =
I say this<br>
>=C2=A0 =C2=A0 =C2=A0because for 20 years I ran my Mk. I MGB with the or=
iginal tach<br>
>=C2=A0 =C2=A0 =C2=A0case, faceplate & needle, but with a cheap auto=
parts store<br>
>=C2=A0 =C2=A0 =C2=A0mini-tach inside the case. The only modifications w=
ere two small<br>
>=C2=A0 =C2=A0 =C2=A0screw holes to attach the mechanism.<br>
><br>
>=C2=A0 =C2=A0 =C2=A0An original MGB Mk. I tach would have had a loop in=
the white<br>
>=C2=A0 =C2=A0 =C2=A0wire, attached to the back of the case with a thumb=
nut and a thin<br>
>=C2=A0 =C2=A0 =C2=A0U-shaped brass bracket. I am not seeing that on you=
rs.<br>
><br>
>=C2=A0 =C2=A0 =C2=A0Actually, I guess it is unclear whether you are tal=
king about an<br>
>=C2=A0 =C2=A0 =C2=A0MGA tach or an early MGB tach...<br>
><br>
>=C2=A0 =C2=A0 =C2=A0--<br>
>=C2=A0 =C2=A0 =C2=A0Max Heim<br>
>=C2=A0 =C2=A0 =C2=A0'66 MGB<br>
><br>
>=C2=A0 =C2=A0 =C2=A0> On Jul 30, 2023, at 5:22 PM, dave northrup <=
;<a href=3D"mailto:dave@ranteer.com"; target=3D"_blank">dave@ranteer.com</a>=
> wrote:<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> Negative ground, car runs smoothly, need to in=
stall the electric<br>
>=C2=A0 =C2=A0 =C2=A0tach which supposedly was previously installed in t=
his car and<br>
>=C2=A0 =C2=A0 =C2=A0working.<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> On the back view, what hooks up where?? I am p=
retty sure the<br>
>=C2=A0 =C2=A0 =C2=A0tab, and the screw, are ground.<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> The other two ? one needs to go to power and t=
he other to the<br>
>=C2=A0 =C2=A0 =C2=A0coil.? I think one is a female bullet connector; th=
e other is<br>
>=C2=A0 =C2=A0 =C2=A0male.? Which goes to power and which to the coil?<b=
r>
>=C2=A0 =C2=A0 =C2=A0> <tach front view.jpg><tach rear<br>
>=C2=A0 =C2=A0 =C2=A0view.jpg>_______________________________________=
________<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> <a href=3D"mailto:Mgs@autox.team.net"; target=
=3D"_blank">Mgs@autox.team.net</a> <mailto:<a href=3D"mailto:Mgs@autox.t=
eam.net" target=3D"_blank">Mgs@autox.team.net</a>><br>
>=C2=A0 =C2=A0 =C2=A0> Donate: <a href=3D"http://www.team.net/donate.=
html" rel=3D"noreferrer" target=3D"_blank">http://www.team.net/donate.html<=
/a><br>
>=C2=A0 =C2=A0 =C2=A0<<a href=3D"http://www.team.net/donate.html"; rel=
=3D"noreferrer" target=3D"_blank">http://www.team.net/donate.html</a>><b=
r>
>=C2=A0 =C2=A0 =C2=A0> Suggested annual donation? $12.75<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> Archive: <a href=3D"http://www.team.net/piperm=
ail/mgs" rel=3D"noreferrer" target=3D"_blank">http://www.team.net/pipermail=
/mgs</a><br>
>=C2=A0 =C2=A0 =C2=A0<<a href=3D"http://www.team.net/pipermail/mgs"; r=
el=3D"noreferrer" target=3D"_blank">http://www.team.net/pipermail/mgs</a>&g=
t; <a href=3D"http://autox.team.net/archive"; rel=3D"noreferrer" target=3D"_=
blank">http://autox.team.net/archive</a><br>
>=C2=A0 =C2=A0 =C2=A0<<a href=3D"http://autox.team.net/archive"; rel=
=3D"noreferrer" target=3D"_blank">http://autox.team.net/archive</a>><br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> Unsubscribe:<br>
>=C2=A0 =C2=A0 =C2=A0<a href=3D"http://autox.team.net/mailman/options/mg=
s/mvheim@sonic.net" rel=3D"noreferrer" target=3D"_blank">http://autox.team.=
net/mailman/options/mgs/mvheim@sonic.net</a><br>
>=C2=A0 =C2=A0 =C2=A0<<a href=3D"http://autox.team.net/mailman/option=
s/mgs/mvheim@sonic.net" rel=3D"noreferrer" target=3D"_blank">http://autox.t=
eam.net/mailman/options/mgs/mvheim@sonic.net</a>><br>
>=C2=A0 =C2=A0 =C2=A0-------------- next part --------------<br>
>=C2=A0 =C2=A0 =C2=A0An HTML attachment was scrubbed...<br>
>=C2=A0 =C2=A0 =C2=A0URL:<br>
>=C2=A0 =C2=A0 =C2=A0<<a href=3D"http://autox.team.net/pipermail/mgs/=
attachments/20230730/c68decc6/attachment-0001.htm" rel=3D"noreferrer" targe=
t=3D"_blank">http://autox.team.net/pipermail/mgs/attachments/20230730/c68de=
cc6/attachment-0001.htm</a>><br>
><br>
>=C2=A0 =C2=A0 =C2=A0------------------------------<br>
><br>
>=C2=A0 =C2=A0 =C2=A0Message: 3<br>
>=C2=A0 =C2=A0 =C2=A0Date: Mon, 31 Jul 2023 08:38:26 +0100<br>
>=C2=A0 =C2=A0 =C2=A0From: Paul Hunt <<a href=3D"mailto:paulbhunt73@g=
mail.com" target=3D"_blank">paulbhunt73@gmail.com</a>><br>
>=C2=A0 =C2=A0 =C2=A0To: <a href=3D"mailto:mgs@autox.team.net"; target=3D=
"_blank">mgs@autox.team.net</a><br>
>=C2=A0 =C2=A0 =C2=A0Subject: Re: [Mgs] mga 1500 with early 5 main mgb e=
ngine<br>
>=C2=A0 =C2=A0 =C2=A0Message-ID: <<a href=3D"mailto:86e97849-ea66-aad=
1-c9f9-0556feb82fb0@gmail.com" target=3D"_blank">86e97849-ea66-aad1-c9f9-05=
56feb82fb0@gmail.com</a>><br>
>=C2=A0 =C2=A0 =C2=A0Content-Type: text/plain; charset=3D"utf-8&quo=
t;; Format=3D"flowed"<br>
><br>
>=C2=A0 =C2=A0 =C2=A0Not an MGB reference number, it looks like it has l=
ater internals<br>
>=C2=A0 =C2=A0 =C2=A0than<br>
>=C2=A0 =C2=A0 =C2=A0but would still be the current-operated type i.e. R=
VI where the<br>
>=C2=A0 =C2=A0 =C2=A0power to<br>
>=C2=A0 =C2=A0 =C2=A0the coil comes via the tach.? The ignition switch w=
ould be<br>
>=C2=A0 =C2=A0 =C2=A0connected to<br>
>=C2=A0 =C2=A0 =C2=A0the male bullet and the female bullet to the coil.?=
12v (also from<br>
>=C2=A0 =C2=A0 =C2=A0the<br>
>=C2=A0 =C2=A0 =C2=A0ignition) to the spade and earth to the case.? When=
used on the MGB<br>
>=C2=A0 =C2=A0 =C2=A0there were separate wires from the ignition switch =
to the spade<br>
>=C2=A0 =C2=A0 =C2=A0and to<br>
>=C2=A0 =C2=A0 =C2=A0the male bullet but you can tee from one to the oth=
er rather than<br>
>=C2=A0 =C2=A0 =C2=A0running a separate wire.<br>
><br>
>=C2=A0 =C2=A0 =C2=A0It would have been helpful to see the top half of t=
he dial where it<br>
>=C2=A0 =C2=A0 =C2=A0might have shown RVI and what polarity it was.? I s=
uspect it would<br>
>=C2=A0 =C2=A0 =C2=A0show<br>
>=C2=A0 =C2=A0 =C2=A0positive earth, but those electronics would have be=
en used with<br>
>=C2=A0 =C2=A0 =C2=A0negative<br>
>=C2=A0 =C2=A0 =C2=A0earth in an MGB for example so it looks like it has=
been converted by<br>
>=C2=A0 =C2=A0 =C2=A0swapping the guts instead of swapping the wires rou=
nd internally.? If<br>
>=C2=A0 =C2=A0 =C2=A0that tach was used after the car was converted to n=
egative earth it<br>
>=C2=A0 =C2=A0 =C2=A0would make sense.<br>
><br>
>=C2=A0 =C2=A0 =C2=A0PaulH.<br>
><br>
>=C2=A0 =C2=A0 =C2=A0On 31/07/2023 01:22, dave northrup wrote:<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> Negative ground, car runs smoothly, need to in=
stall the electric<br>
>=C2=A0 =C2=A0 =C2=A0tach<br>
>=C2=A0 =C2=A0 =C2=A0> which supposedly was previously installed in t=
his car and working.<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> On the back view, what hooks up where?? I am p=
retty sure the<br>
>=C2=A0 =C2=A0 =C2=A0tab, and<br>
>=C2=A0 =C2=A0 =C2=A0> the screw, are ground.<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> The other two ? one needs to go to power and t=
he other to the<br>
>=C2=A0 =C2=A0 =C2=A0coil.? I<br>
>=C2=A0 =C2=A0 =C2=A0> think one is a female bullet connector; the ot=
her is male.?<br>
>=C2=A0 =C2=A0 =C2=A0Which goes<br>
>=C2=A0 =C2=A0 =C2=A0> to power and which to the coil?<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> ______________________________________________=
_<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> <a href=3D"mailto:Mgs@autox.team.net"; target=
=3D"_blank">Mgs@autox.team.net</a><br>
>=C2=A0 =C2=A0 =C2=A0> Donate:<a href=3D"http://www.team.net/donate.h=
tml" rel=3D"noreferrer" target=3D"_blank">http://www.team.net/donate.html</=
a><br>
>=C2=A0 =C2=A0 =C2=A0> Suggested annual donation? $12.75<br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0> Archive:<a href=3D"http://www.team.net/piperma=
il/mgs" rel=3D"noreferrer" target=3D"_blank">http://www.team.net/pipermail/=
mgs</a><br>
>=C2=A0 =C2=A0 =C2=A0<a href=3D"http://autox.team.net/archive"; rel=3D"no=
referrer" target=3D"_blank">http://autox.team.net/archive</a><br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0><br>
>=C2=A0 =C2=A0 =C2=A0Unsubscribe:<a href=3D"http://autox.team.net/mailma=
n/options/mgs/paulbhunt73@gmail.com" rel=3D"noreferrer" target=3D"_blank">h=
ttp://autox.team.net/mailman/options/mgs/paulbhunt73@gmail.com</a><br>
>=C2=A0 =C2=A0 =C2=A0-------------- next part --------------<br>
>=C2=A0 =C2=A0 =C2=A0An HTML attachment was scrubbed...<br>
>=C2=A0 =C2=A0 =C2=A0URL:<br>
>=C2=A0 =C2=A0 =C2=A0<<a href=3D"http://autox.team.net/pipermail/mgs/=
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t=3D"_blank">http://autox.team.net/pipermail/mgs/attachments/20230731/0ad7e=
a29/attachment-0001.htm</a>><br>
><br>
>=C2=A0 =C2=A0 =C2=A0------------------------------<br>
><br>
>=C2=A0 =C2=A0 =C2=A0Subject: Digest Footer<br>
><br>
>=C2=A0 =C2=A0 =C2=A0_______________________________________________<br>
>=C2=A0 =C2=A0 =C2=A0Mgs mailing list<br>
>=C2=A0 =C2=A0 =C2=A0<a href=3D"mailto:Mgs@autox.team.net"; target=3D"_bl=
ank">Mgs@autox.team.net</a><br>
>=C2=A0 =C2=A0 =C2=A0<a href=3D"http://autox.team.net/mailman/listinfo/m=
gs" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/mailman/list=
info/mgs</a><br>
><br>
><br>
>=C2=A0 =C2=A0 =C2=A0------------------------------<br>
><br>
>=C2=A0 =C2=A0 =C2=A0End of Mgs Digest, Vol 194, Issue 12<br>
>=C2=A0 =C2=A0 =C2=A0************************************<br>
><br>
><br>
> _______________________________________________<br>
><br>
> <a href=3D"mailto:Mgs@autox.team.net"; target=3D"_blank">Mgs@autox.team=
.net</a><br>
> Donate:<a href=3D"http://www.team.net/donate.html"; rel=3D"noreferrer" =
target=3D"_blank">http://www.team.net/donate.html</a><br>
> Suggested annual donation=C2=A0 $12.75<br>
><br>
> Archive:<a href=3D"http://www.team.net/pipermail/mgs"; rel=3D"noreferre=
r" target=3D"_blank">http://www.team.net/pipermail/mgs</a>=C2=A0 <a href=3D=
"http://autox.team.net/archive"; rel=3D"noreferrer" target=3D"_blank">http:/=
/autox.team.net/archive</a><br>
><br>
> Unsubscribe:<a href=3D"http://autox.team.net/mailman/options/mgs/paulb=
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t/mailman/options/mgs/paulbhunt73@gmail.com</a><br>
-------------- next part --------------<br>
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<br>
------------------------------<br>
<br>
Subject: Digest Footer<br>
<br>
_______________________________________________<br>
Mgs mailing list<br>
<a href=3D"mailto:Mgs@autox.team.net"; target=3D"_blank">Mgs@autox.team.net<=
/a><br>
<a href=3D"http://autox.team.net/mailman/listinfo/mgs"; rel=3D"noreferrer" t=
arget=3D"_blank">http://autox.team.net/mailman/listinfo/mgs</a><br>
<br>
<br>
------------------------------<br>
<br>
End of Mgs Digest, Vol 195, Issue 1<br>
***********************************<br>
</blockquote></div>
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