Hello one and all I have a question. I can't get my head around regarding the A/C wiring the circuit shows the high pressure switch as normally closed opens at 430 / 20 lbs closed at 200 / 50 lbs this completes the circuit to ground. Also the a/c refrigerant switch normally open cut out at 2-9 lbs and cut in 22-32 lbs So when the a/c is turned on, where will the high pressure switch be in or out I think closed?? will removing the connector take this out of the cct to remove completion to ground?? or should the wires at the connector be jumpered??? still working on the cooling fans running when the engine is running the temp is 45 degress F outside I don't think we need a/c I would like to stop the fans from running without just pulling the AUX FAN relay I need to be sure the 8.1 engine is getting the proper fuel mjx and that the ECT sensor is not screwing things up thanks for the read Later Norm