Hi everyone I just purchased an 05 Lancer ES 2L and am diagnosing an a/c issue. The compressor does not kick on whatsoever. I can spin the clutch by hand so I do not think it is seized. The culprit I think is the hack job someone did with the wiring. The picture below shows the pressure switch coming from the high pressure line. It has two wires a solid black and a black with yellow stripe which I highlighted yellow. I believe the solid black is a ground but I can not find where this black and yellow wire goes. I have looked all around the p/s of the engine and havent found anything so far. Could one of you please check your car and tell me where this pressure switch line meets the harness? Pictures would be greatly appreciated. thanks!

 

Check the temperature switch on the compressor...

*edit*
I just looked over the wiring diagram, and it says the black/yellow wire from the pressure switch goes to connector c-111 then changes to black/red and then to I believe pin 4 on the A/C ECU (A/C/heater control). connector c-111 looks like it's in the car passenger side floor, ahead of the door, behind the firewall...somewhere in there...