A/C ecm wiring for idle

[Justin71105]

I already have a trinary switch on the drier, I will have to read up some more but I think it gets low and high pressure from the little VA says about it on paperwork.

Going off the lt1 swap and ls1tech forums I think I may just need 3 wires off the senor like you said for my ecm. 5v reference, low reference and pressure sensor. The other wires look like they would turn on compressor and fans from ecm. Thats already done externally, I just need the ecm to know when compressor kicks on or is about to so it can bump idle up a little.

Does fine driving with a/c only when I come to a stop or are moving slow with near idle rpm of 750.


**Have read for a few hours and it looks like my ecm with the hardware# is able to use the 12v compressor power to pin 17 to bump idle up with some adjustments on the tune as well.

Would need to change it from serial to analog. On those they ground pin 55, still reading to see if thats also needed.