(ELECTRICAL) 105 Amp Alternator Swap HOW TO – GM CS130

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01-30-06, 05:04 PM

#26

riceburner1r2001

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big ern from what i just read aboe your capping off 2 and plugging 2 n

01-30-06, 05:10 PM

#27

Big_Ern

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yes, that is correct. The GM harness has 4 wires, but only 2 of them are needed (L&S). You probably don't need to cap off the 2 extras (P&F), but I'm not sure what they're used for and I didn't want them to short out on something just in case.

01-30-06, 08:29 PM

#28

Re-Speed.com

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Quote:

Originally Posted by Big_Ern

If you did this 1-wire conversion the idiot light on your dash would stop working, and might possibly always be on due to it not being hooked up. Is it really worth it for 2 extra wires?

It would not have to, you can still use the "L" terminal with a self exiting regulator. Only difference is that is has internal circuitry to feed the voltage to the regulator. This eliminates the need for the wire from the battery post to the "S" terminal. It also eliminates to worry about draining your battery.

The industry part number for this regulator is: D411SE

The part numbers for the alternator you used are:

Delco# 1102607 OR 10479954
Lester# 7964 OR 8103

Used On:
(1994-92) Buick LeSabre 3.8L
(1994-91) Buick Park Avenue 3.8L
(1996-94) Chevrolet Caprice 4.3L, 5.7L
(1996) Chevrolet Impala 5.7L
(1994-93) Chevrolet Lumina APV Van 3.8L
(1994-93) Oldsmobile 88 3.8L
(1994-91) Oldsmobile 98 3.8L
(1992) Oldsmobile Delta 88 3.8L
(1994-93) Oldsmobile Silhouette 3.8L
(1994-92) Pontiac Bonneville 3.8L
(1994-93) Pontiac Trans Sport 3.8L

-billy

01-30-06, 08:58 PM

#29

PATZ

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great job!

01-30-06, 09:00 PM

#30

vipernicus42

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I knew I'd seen something like this somewhere, so I went searching for it.

There are now two threads in the archive about GM alts on FBs

The one used in those threads actually has two ears we can use on the alt mount, though one has to be ground down a little bit so that it will fit.

https://www.rx7club.com/1st-gen-archive-71/electrical-alternater-upgrade-cheapy-504725/
https://www.rx7club.com/1st-gen-archive-71/electrical-electrical-issues-504729/
https://www.rx7club.com/1st-gen-archive-71/electrical-economical-alternator-upgrade-504723/

Personally, I got an FD alternator because Silverrotor had one and he's local. Dual belt, 100amp, basically bolt-in, and the price was right. Yeah these GM alts are cheaper though if you have a grinder (for the one in the links) or if you just bolt on one ear (for the one in this thread).

But I'm glad there are so many alternatives!

Jon