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Re: WOT accessory cutoff switch
Interrupting that "little blue wire" does not always shut down the
alternator. This wire excites the field windings. The field windings
do not always become unexcited when voltage is removed from that wire.
You can test this. Interrupt the blue wire, put a meter on the "big
red wire" and ground. Start the car. The meter will read around 12
Volts. Now with the car still running attach the blue wire. The
voltage should increase to somewhere between 13 and 14 volts and you
might even hear the alternator. Now interrupt the blue wire again,
if the alternator were to shut off the voltage should drop back to 12
volts. I bet it doesn't.
______________________________ Reply Separator _________________________________
Subject: Re: WOT accessory cutoff switch
Author: AUDIDUDI@delphi.com at SMTP
Date: 7/20/95 1:10 AM
> > The WOT switch from a 83> VW GTI should mounts to most t-bodies pretty
> > easily.... I modified the bracket to fit my GLH turbo to kick off acc
> > besides the A/C..... I believe it was about 30.00 for the parts........
> Simple minded me can easily figger out how to shut off the compressor
> during WOT acceleration, you simply disengage the compressor clutch.
> The deal with shutting down the alternator is a little more intriguing.
> Are you messing with the regulator? It seems like a 90A relay in-line
> might be a bit much.
Use the WOT switch to trigger a relay that interupts the little blue wire
from the alternator D+ terminal and -- voila! -- you have an alt. cut-out
switch. On my normally (g)aspirated 4000 and 5000, it makes a very small
but noticeable difference in acceleration...
/| | | |\ | |\ | | |\ | AudiDudi@delphi.com
/-| | | | | | = | | | | | | | Jeffrey Goggin
/ | |_| |/ | |/ |_| |/ | Scottsdale, Arizona