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Dave;
I assume you've checked the ground wires for each horn....
Dave
On Wed, Jan 27, 2021 at 3:50 PM Dave Connitt <dconnitt@fuse.net> wrote:
> Hi All,
> One of my winter projects is to determine why the horn fuse in my TR4A
> keeps blowing.
> I had installed a Advanced AutoWire harness during the restoration. The
> harness contains a 20 amp fuse for the horn. The horns are new as of the
> restoration. I went through the wiring harness and could not find a issue
> there so now I am looking at the horns themselves and that is where I need
> your help. I measured the horn coil resistance and it is 0.8 ohms in both
> of them. If I use 13.8 VDC as my battery voltage, I get 17.25 amps at the
> fuse which is too close to the 20 amp fuse rating in my opinion. If the
> resistance was even 0.9 ohms, the fuse current would be a little over 15
> amps which would make more sense. Does anyone know what I should see as a
> horn coil resistance on a good horn?
> Thanks in advance,
> Dave Connitt
>
> Sent from my iPhone
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:comic sa=
ns ms,sans-serif;font-size:large;color:#000099">Dave;</div><div class=3D"gm=
ail_default" style=3D"font-family:comic sans ms,sans-serif;font-size:large;=
color:#000099"><br></div><div class=3D"gmail_default" style=3D"font-family:=
comic sans ms,sans-serif;font-size:large;color:#000099">I assume you've=
checked the ground wires for each horn....</div><div class=3D"gmail_defaul=
t" style=3D"font-family:comic sans ms,sans-serif;font-size:large;color:#000=
099"><br></div><div class=3D"gmail_default" style=3D"font-family:comic sans=
ms,sans-serif;font-size:large;color:#000099">Dave</div></div><br><div clas=
s=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Jan 27, 202=
1 at 3:50 PM Dave Connitt <<a href=3D"mailto:dconnitt@fuse.net";>dconnitt=
@fuse.net</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex">Hi All,<br>
One of my winter projects is to determine why the horn fuse in my TR4A keep=
s blowing. <br>
I had installed a Advanced AutoWire harness during the restoration. The har=
ness contains a 20 amp fuse for the horn. The horns are new as of the resto=
ration. I went through the wiring harness and could not find a issue there =
so now I am looking at the horns themselves and that is where I need your h=
elp. I measured the horn coil resistance and it is 0.8 ohms in both of them=
. If I use 13.8 VDC as my battery voltage, I get 17.25 amps at the fuse whi=
ch is too close to the 20 amp fuse rating in my opinion. If the resistance =
was even 0.9 ohms, the fuse current would be a little over 15 amps which wo=
uld make more sense. Does anyone know what I should see as a horn coil resi=
stance on a good horn?<br>
Thanks in advance,<br>
Dave Connitt <br>
<br>
Sent from my iPhone<br>
** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank">triumphs@au=
tox.team.net</a> **<br>
<br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/triumphs"; rel=3D"noreferr=
er" target=3D"_blank">http://www.team.net/pipermail/triumphs</a>=C2=A0 <a h=
ref=3D"http://www.team.net/archive"; rel=3D"noreferrer" target=3D"_blank">ht=
tp://www.team.net/archive</a><br>
<br>
hs/forzion7@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://autox.te=
am.net/mailman/options/triumphs/forzion7@gmail.com</a><br>
</blockquote></div>
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