90 1500 AC Pressure switch


New member
Jul 22, 2020
Hey guys I just picked up a 90 Silverado and of course the AC doesn’t work lol. Everything looks ok and it has Freon but I see that there’s nothing plugged into the pressure switch on the evaporator. I found 2 random green wires near the fire wall but when I touch them the clutch doesn’t engage but the idle raises a bit? The smog pump is gone so I’m not sure if these wires are for that? Should I just rewire the AC? Not sure if anyone has ran into anything like this before

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