I’ve got my haltech all setup and running currently setting up an IAC and haltech controlled fan relay I wanted to do the same with the A/c compressor.

would anyone be able to assist me with figuring out in the A/c wiring where the request signal is? Maybe I’m missing something but this is my goal

“Wire the 22RE's A/C Request signal from the cabin switch to a spare Analog Voltage Input (AVI) or Digital Pulsed Input (SPI) on the Haltech.”

I am assuming once that is located, I should be able to find the ground side of the compressor relay pretty easily to setup a DPO

any help is appreciated