I have a '07 Century day cab, 14L Detroit. The wiring to the compressor clutch has 12V on what should be the ground wire. It has 12V even with the key off. Is there some device in the circuit for the ground side of the coil that could have failed, or do I have two wires that have shorted to each other? I fixed it for now by removing the wire from the plug and adding a ground wire to one of one of the mounting bolts.
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