I tested the compressor as a stand alone system using a separate battery and running the car power to the coil and ground to the body of the compressor
Tested how. Exactly. The way to test for clutch amperage is battery NEG---ground---compressor body----------(through clutch)---------out compressor wire-------to multimeter ON AMPS--------to battery POS. Compressor clutch should engage or click and meter should show amperage draw somewhere aroud 4A or less
