I'm not sure this is even going to be possible because there is no A/C request wires in the PCM harness. It looks like I would have to use the original switch on the dash for it to work, because it sends a signal through the serial data line to the PCM. Anybody found a way around this?

 

Nobody's done this?

 

maybe a different OS you can flash that does have an AC request pin?

 

Yeah, I'm thinking about changing everything to 2002, but haven't had the wiring diagrams side by side to see how much repinning it would take.