[redzo6]

I am using the vintage air wiring relay harness. I originally tried attaching one of the white wires to the ecm to control the fans and the rest of the wires exactly as the diagram showed. that didn't work. I have the same diagram that was posted above. I tried powering the relay harness with full time power on one wire and instead of the ignition power wire, I attached it to "a/c power on wire" and then grounded the white wires. this allowed the fan to come on everytime the a/c turned on but the car would low idle until it shut down and it left the blue wire on trinary switch unattached. Also I am running twin fans, thinking I would run 1 fan for the a/c and the other fan connected to the ecm.