Putting a ls in a 1964 Cadillac and using a sanden 508 ac compressor wiring questions

I’ve installed a 5.7 ls out of a 2001 corvette into a 1964 Cadillac and I’m going to run a sanden 508 ac compressor could anyone give me some wiring help.  I’m trying to trace down the factory wires since this car was purchased with no motor prior owner pulled it out and just waded everything up.  What colors were the original wires and how do you wire this to a clutch compressor

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If the original connector is still there, it will look like the one below. According to the wiring diagram which can be found in this website's Help section under - AC/Heat: Illustrations and Pictures, the black wire will provide 12V and the black/white wire is grounded. The Sanden probably has a different connector so you will need splice it to the factory wires or find an adapter. Wiring the compressor clutch is simple. If you plan on using the factory Comfort Control system, it can be complicated to troubleshoot (my car is pre-Comfort Control : )


ACDelco 88861022 - ACDelco Replacement Wiring Pigtails

Brad, do you have a shop manual?  The electrical section will show you the color of the wire and the location on the fire wall. 

Thanks, no I don’t have a shop manual but think I’m going to have to get one for some of this

The compressor wire is a black wire.  On the compressor, one is ground and the other is power.  All it does is activate the magnet for the clutch. Just jump power and ground to figure it out. 



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