Evil Air Conditioning
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odd... I know on 88 and 93, the AC controls are vacuum... and they go out on the passenger side... But then, I havn't really looked to see if there's any power hooked up to the thing too or not.
You could try measuring the ampreage going over the wire, if someone replaced the original wire and the one they have is rated for 5amp but it's servicng 20 amp, that could do it.
You could try measuring the ampreage going over the wire, if someone replaced the original wire and the one they have is rated for 5amp but it's servicng 20 amp, that could do it.
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The 14 GA brown wire is always hot as it feeds off the fusible link. The 14 GA dark blue with black stripe goes to the AC clutch thru a bi-directional Zener diode. The 20 GA dark blue with orange stripe goes to the AC switch inside the truck after it passes thru the AC damped pressure switch on the heater valve dash panel right side. The 14 GA dark blue wire goes to a J2 splice that connects to pin 2-4 on the computer. Pins 1-45 and 1-56 on the SMEC also go to the AC switch.