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Re: Wiring in a GM internally regulated alt.

To: matthew peterson <pete_303@yahoo.com>
Subject: Re: Wiring in a GM internally regulated alt.
From: "Patrick J. Horne" <horne@cs.utexas.edu>
Date: Wed, 14 Aug 2002 12:58:38 -0500 (CDT)
- Support Habitat for Humanity, A "hand up", not a "hand out" -

Pat Horne, Network Manager, Shop Supervisor, Future planner, CS Dept,
University of Texas, 1 Texas Longhorns, #C0500,Austin, Tx. 78712 USA
voice (512)471-9730, fax (512)471-8885, horne@cs.utexas.edu

On Wed, 14 Aug 2002, Patrick J. Horne wrote:

> Matt,
>
> If you have a single wire alternator, you don't need any other connections
> to change the battery, although, as you say, you run the chance of blowing
OOPS ^^^^^^ CHARGE

> the ammeter without putting a 10 Ga. wire from the
output of the
> alternator to the battery.
>
> If you have a standard GM alternator, the parts guy is correct. The
> standard alternator needs an external voltage to get the excitation power
> to the alternator. The single wire alternator gets this internally.
> As I recall the two connections on the plug on the alternator are two
> completely different connections. One is for the excitation and the second
> one runs the idiot light on the dash. Better make sure which one you
> connect power to before you run the new wire. If you want yo can add a
> charge light using the other pin by running it to a dash light and from
> the light to switched 12V power.
>
> If you don't know for sure which type you have, just wait until the car is
> running and see if it charges the battery. The ammeter will show you in a
> few seconds. Oh, in order to get the single wire alternator running you
> have to rev the engine about about 2000 RPM for a second and it will kick
> in. The normal GM alternator doesn't need this revving.
>
> - Support Habitat for Humanity, A "hand up", not a "hand out" -
>
> Pat Horne, Network Manager, Shop Supervisor, Future planner, CS Dept,
> University of Texas, 1 Texas Longhorns, #C0500,Austin, Tx. 78712 USA
> voice (512)471-9730, fax (512)471-8885, horne@cs.utexas.edu
>
> On Wed, 14 Aug 2002, matthew peterson wrote:
>
> > Hi everyone,
> >
> > I've been following the thread on wiring up a GM alternator and I have a
> few questions.  I have mine wired up with the white wire attached to the
> output lead and nothing else.  If I don't run a 10 GA. wire directly from
> it to the battery I run the risk of blowing the ammeter.  Is this correct?
> The guy at the place I bought the alternator told me to connect one of the
> other two wires coming out the alternator up to the wire that was hot going
> into the old regulator when the ignition is on.  Is this nessecary?  I don't
> have the car running yet but I don't want to wreck something once it gets 
>going.
> >
> > Thanks for any advice,
> >
> > Matt Peterson '68 1600 (soon to be L20b powered)
> > HotJobs, a Yahoo! service - Search Thousands of New Jobs
> >
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