AC wiring for remote start

This thread has been helpful. Do you have any recommendations to start AC using the CM900 module (1 jumper)? I am having same issue has OP.

Right now, I have
yellow (starter) to green/black
green (ign) to black/red
blue (2nd ign) to blue/yellow (jumper on 2nd ign as it is by default)
green/white (+ parking light) to green
white (acc) to white/green

 

You must wire it the way I posted. The starter wires needs power on crank and the ignition wire need power constantly on ignition and during crank. It’s vital for all components and modules to have the correct power when needed or things won’t function and you can get dash warning lights. See post #13. The CM900 unit is a little different. So you won’t be able to use that parking light wire to power anything other than + parking lights. You will need to power both starter wires. They should be isolated with a relay or large diode. Some people will just run a wire from one of the start wires to the other to basically jump the circuit. This is not the proper way to do it. If you want to avoid external relays or diodes you’ll want to get a cm7000 brain (Compustar FT-7200s)

 

To isolate the the starter wires with a relay are you wiring the yellow starter from the CM900 to a trigger on two relays, one to the black/white starter wire and the other to green/black?

 

Correct. Or you could use one of the wires in the secondary harness and use the POC to make it a selectable - starter wire to trigger the relay. Then just feed 12v to the other side of the relay coils