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COOP3726 · 06-11-2019, 09:15 AM

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.

06-11-2019, 09:15 AM	#6
COOP3726 Registered User Join Date: May 2012 Location: Newnan Ga Posts: 88	Re: A/c wiring 5.3l compressor 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.