1986 Buick Regal a/c power

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December 5th, 2021, 01:29 PM

Slowpoke

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1986 Buick Regal a/c power

Hello all I have a 86 Buick Regal and recently removed the factory ecu , ecu harness and c.c carburetor and replaced it all with a Holley sniper ecu. What do I need to do to get the power back to the a/c ? Any help is much appreciated

December 13th, 2021, 09:54 AM

olds 307 and 403

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Get a wiring manual, it helps. The Cruise and A/C relay I believe is grounded through the ECM. Just find and ground to the body. The Cruise is the black wire off the speed sensor.

December 13th, 2021, 10:16 AM

Slowpoke

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Quote:

Originally Posted by olds 307 and 403

Get a wiring manual, it helps. The Cruise and A/C relay I believe is grounded through the ECM. Just find and ground to the body. The Cruise is the black wire off the speed sensor.

Thank you for the response! Since I posted this I figured it out. The answer is the brown wire coming from the compressor relay mounted on the air box is the wire that needs to be grounded to turn on the compressor.