Alternator/Starter Wiring

[Max Hoepli]

What is the difference between Audis with battery under hood or under back
seat?


Max

----- Original Message ----- 
From: "L DC" <ldc007usa at yahoo.com>
To: <audi at humanspeakers.com>
Cc: <Quattro at audifans.com>
Sent: 27, February 2006 08:34
Subject: Re: Alternator/Starter Wiring


> Thank for your reply Huw.
>
> Yes, my 86 5KTQ has the battery under the rear seat.
>
> Based on a alternator and starter pixs on the Haynes
> manual, (I know is not the official thing, but it does
> have some detail pix in there that come in handy
> sometimes) your description holds:
>
> "The 'battery under back seat' cars, I think, will
> have one main battery to starter wire,  and from there
> will run wires to the fusebox and alternator, usually
> with another wire running from the alt. to the
> fusebox."
>
> As for the starter exciter wire, I figured it goes on
> the top position of the solenoid.
>
> You mentiond, there are often 2 wires and I do see the
> connection for the second one in the starter's
> solenoid, but my car only has one wire to it. That's
> how it was when I bought it.
>
> Looking at my VW Quantum Syncro, with battery under
> the hood, I see both solenoid connectors have a wire
> going to, just like you described.
>
> Could it be possible my 5KTQ be missing such second
> wire that runs to the fuse box to keep more constant
> juice while cranking?
>
> Many thanks again for all your replys,
>
> -Best Regards,
>
> -Louis
>
>
>
>
>
> --- Huw Powell <audi at humanspeakers.com> wrote:
>
> >
> > > I have misplaced my manual, and I need help with
> > > wiring.
> >
> > these answers are going to depend on your year and
> > model...
> >
> > this diagram:
> > http://www.humanspeakers.com/audi/altpix.htm shows
> > how the
> > typical 80's "battery under hood" Audi is wired.
> > The "battery under
> > back seat" cars, I think, will have one main battery
> > to starter wire,
> > and from there will run wires to the fusebox and
> > alternator, usually
> > with another wire running from the alt. to the
> > fusebox.
> >
> > > Also, the exciter wire that goes to the Selenoid
> > in
> > > the
> > > starter, does it go to the connector on top or
> > below
> > > the Selenoid?
> >
> > There are often two "small" wires going to the
> > starter - one is the
> > "start" signal wire, and the other is a return line
> > to the fusebox to
> > help keep the voltage up while cranking.  Getting
> > them wrong will not
> > hurt anything, except that the car won't crank when
> > the key is turned.
> > In that case, they are backwards, and you should
> > switch them.  Or, just
> > try the exciter wire on each terminal to find which
> > one is right.
> >
> > > Finally, there is also another, 16-18 gauge wire;
> > I
> > > believe that one goes to the smaller screw
> > position on
> > > the alternator next to the big alternator power
> > > search, correct?
> >
> > If that is the blue "D+" wire that excites the alt,
> > yes.
> >
> > -- 
> > Huw Powell
> >
> > http://www.humanspeakers.com/audi
> >
> > http://www.humanthoughts.org/
> >
>
>
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