Jim,
If you have a CS130 alternator (referring to
http://www.springhillautoelectric.com/application/chevrolet/C,%20K%20PICKUP_8
4-94.htm for a 1991 C1500 454 pickup) then there is some care needed. Check
out this link http://www.madelectrical.com/catalog.shtml which provides the
following caution for CS130 conversions:
"The CS alternator models have some fragile electronics within the voltage
regulator, and it is very important to get the wiring correct the FIRST TIME!
Simply connecting a full-12volt power source to the wrong terminal at the
Plug-In connector can instantly damage electronics at the built-in voltage
regulator with the CS models."
And the same site provides a conversion kit for the CS130 unit:
Alternator Wiring kit Alternator Wiring kit (part # CS-ALT) It properly wires
the GM DELCO CS-130 & the newer CS-130D & other CS models of GM alternators.
It is very important to get the wiring correct the first time! Fragile
electronics at the built-in voltage regulator, TPI engine type, late 1980's)
I can't speak for how it was done before you started having problems - just
that it looks like connecting the wrong wire will toast the regulator.
Greg Dito
CD6250L
Chapel Hill, NC
----- Original Message -----
From: "James Henningsen" <trguy@cfl.rr.com>
To: <6pack@autox.team.net>
Sent: Tuesday, July 21, 2009 8:08 PM
Subject: [6pack] GM alternator Upgrade Help Needed
> Team:
>
>
>
> I have an upgraded alternator (GM 105 amp alternator (Advance auto Part
> Number P79193)) installed in my 75 TR6 and am having some problems. The
> alternator fits very well as it is the smaller case version. You just need
> to install the correct pulley for your car (3/8 vs =). The alt fits a 1991
> Chevy C1500 454 engine pickup and comes with a lifetime warranty. It has a
> standard GM three wire plug adapter. It was installed by a friend of mine
> about 5 years ago and has always worked as installed until recently. I am
> seeking help in identifying where to install the three wires on the Alt GM
> plug to the stock harness of a 75 TR6 as I want to install per Dan Masters
> recommendation and that the current install may be part of the reason my
> alternator is blowing up twice in the last couple of weeks (thank you
> lifetime warranty).
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