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Re: A/C Compressor Wiring Diagram/Help Needed
Posted to HD/Fleet Forum on 12/17/2019

Brent,

All three pressure sensors are closed. Compressor clutch relay pin #30 (or blade #3 on this relay) has 12 volts. Jump pin 30 to 87 (pin 5) in the relay socket and compressor clutch engages. I presume that when the A/C button is depressed on the contro... Login to read more.