datsun-roadsters
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RE: Alternator wiring revisited

To: "Adam Bradley" <ambradley@yahoo.com>
Subject: RE: Alternator wiring revisited
From: "Daniel Beatty" <nowroc@pacifier.com>
Date: Tue, 3 Jul 2001 17:17:39 -0700
IMHO Pat & Brian are correct.  I have the Summit 100amp alternator on a 65
1600.

Wiring diagram: http://home.istar.ca/~datsun/65h67p.htm

I connected the original white/red wire from the old alternator to the new
alternator.  This wire runs back to the fuse block, just like the original
wiring.  I did not run a wire to the battery, as there was not one
originally.  The amp meter operates as normal.

A 100amp alternator will only produce as much power as needed; not the full
100amps at all times.  So your wiring is not in jeopardy in stock
configuration unless you add something (hotter headlights, stereo) that will
draw more than the stock energy amount.

I have rewired my new hot headlights, driving lights, air horn with all new
relays and an amplifier to be completely separate from the stock harness as
they draw roughly 60amps by themselves; so the need for 100amps.  All power
is pulled directly from the alternator.

Daniel Beatty
NOWROCer
"never enough candlewatts on a back country road at night"

-----Original Message-----
From: owner-datsun-roadsters@autox.team.net
[mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of Patrick J.
Horne
Sent: Tuesday, July 03, 2001 5:01 PM
To: Adam Bradley
Cc: datsun-roadsters@autox.team.net
Subject: Re: Alternator wiring revisited


Yes, this sounds right.

One thing that you will find and think it is wrong is when you start
the engine and look at the ammeter you will find that it is showing
a discharge.  This is correct.  By wiring the alternator directly to
the battery you bypassed the ammeter, so its readings will be worthless
to determining if the alternator is putting out anything.  Since you
added a 30 Amp fuse between the alternator and the battery it would be
possible to reroute that wire to go to the large white wire that you
removed from the alternator, rather than directly to the battery.  This
would make the ammeter show sharge/discharge conditions correctly.

Peace,
Pat

- Support Habitat for Humanity, A "hand up", not a "hand out" -

Pat Horne, Network Manager, Shop Supervisor, Future planner
CS Dept, University of Texas, Austin, Tx. 78712 USA
voice (512)471-9730, fax (512)471-8885, horne@cs.utexas.edu

On Tue, 3 Jul 2001, Adam Bradley wrote:

> OK, I've installed the GM one wire alternator and wired it.  (I was
> surprised that it fits in the stock late alternator location and the
> pulley lines up; the only mod. necessary was to enlarge the bottom ear
> hole on the alternator).
>
> OK, now for the reason for this e-mail.  I want to make sure I've wired
> it correctly before I hook up the negative battery post.  I connected a
> 12 gauge wire with an inline 30 amp fuse from the "red" post on the
> alternator directly to the battery + terminal.  I connected the other
> post on the back of the alternator to ground.  I've seen messages
> stating this is not necessary.
>
> Does this sound right?  Am I going to blow up my car or melt my wiring?
>
> More importantly, can I completely disconnect my external voltage
> regulator and leave the connector dangling?  Do I have any other wiring
> I need or should do?
>
>
>
> =====
> Adam
> '70 1600 SPL311-28181
> http://www.picturetrail.com/abend
> Get personalized email addresses from Yahoo! Mail
> http://personal.mail.yahoo.com/

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