harwood1994 Posted August 13, 2019 Share Posted August 13, 2019 My mechanic is correcting a lot of jerry-rigged wiring jobs on my 1981 f250 It had two owners before me He said the wiring went from the harness, to a relay and from the relay to this light blue guy We are pretty sure that the wiring goes from this to the a/c compressor but he has no idea what this is and it isn’t showing up on the Haynes manual We are thinking that this truck had after market a/c installed somewhere along the way. The compressor itself is fried at this point and looks old but the wiring job and the lines definitely aren’t factory Thank in advnace! Michael Harwood Richmond, VA 1981 F250, 4wd, 4spd, straight 6 Link to comment Share on other sites More sharing options...
Gary Lewis Posted August 13, 2019 Share Posted August 13, 2019 I sure don't recognize that thing. Sorry. Link to comment Share on other sites More sharing options...
salans7 Posted August 13, 2019 Share Posted August 13, 2019 I sure don't recognize that thing. Sorry. That is definitely not a Ford plug, and more than likely it's a dealer or aftermarket A/C system. Link to comment Share on other sites More sharing options...
Steve83 Posted August 13, 2019 Share Posted August 13, 2019 Certainly not Ford. That it was wired to the A/C doesn't mean it has anything to do with A/C. I'd look for any ID molded into the case, and crack it open. Link to comment Share on other sites More sharing options...
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