Quote:
Originally Posted by COOP3726
O.K. homemade87. I have the fans wired up with the three relays for the ECM to operate them from a ground. Not with the trinary switch. My truck has a Low pressure switch on the accumulator. Not sure if it has a high pressure switch. You said you have yours like this and you just used the original compressor clutch wire and everything works like it should. Is this correct? I can go back and add the ac wires that the ECM recommends to use, if possible, for the High and Low pressure switches. I would rather not because that will mean taking all of the wire loom back off and reworking the wire harness. Any other info will be greatly used.
Thanks.
|
If you do not have the high pressure trinary wires going to the ecm the fans will not work with the ecm at all . The ground trigger wires you have going to the relays from the ecm will not do anything . The trinary tells the ecm what to do for the fan trigger . All you will need to add is the high pressure trinary . I used the original truck low pressure switch and the original compressor clutch wire .