Some 130 SI alternator swap info

pagrunt

Geezer
Sep 14, 2014
9,745
16,946
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Elderton, Pa
Not sure how helpful this will be but it should get things in the right direction to swap in a 130 SI alternator into our cars. I know others have done this over the years with no issue at all & know just what to do to do the swap but this would still be some good info for those who never done it. Just picked up a '87 Camaro Eletrical Diagnosis supplement for some reference with some of the electrical projects on Jr.'s & my cars. Looking over the diagrams it looks easier than some make it out to be. First, I don't see any resistor in Circuit 25, the brown wire for the warning light, From what I see, Camaros had a warning light even with the gauge so no resistor wire in the circuit. My view on this is with a factory gauge car with the resistor wire one shouldn't need a resistor in the circuit. Then there is the third wire, listed as Circuit 250 & color tan/white stripe out of cavity F, is tied into the electric fan on all engines except for VIN G & H 305's with the TH700R4. Regardless, it is tied into the FP FAN FUSE (20amp) in the fuse box. Also on the G & H 305's, the choke heater relay is part of this circuit too. If this fuse is needed a simple inline fuse running off a key hot source could be set up. This too could be used with electric fans if using a GM set up. The '87 Camaro uses a four wire relay (battery hot, to fan, temp sender, key hot) for its set up. I did scan the diagram for the 2.8 MPI V6 (S), TPI 305 (F) & 350 (8), carbed 305 (G & H) along with the FP FAN FUSE & copied the pin out diagram for the plug.
1987 F FP Fan Fuse-130 SI.jpg
1987 F VIN F, 8 130 SI.jpg
1987 F VIN G, H 130 SI.jpg
1987 F VIN S 130 SI.jpg
12401_CON.jpg
 
I've got a 140 that I'd like to put into my Cutlass at some point, and have the rally gauges and a dummy light. Since I also bought an S792 adapter plug I'm assuming I'm good to go unless I swap gauges. If I install aftermarket gauges what's the best way to retain the indicator lamp? The alternator I chose has P, L, F, and S: Do I use any of the stock wiring or can I just tap into the "F" terminal of the plug? I believe it's for a lamp.
 
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