I have a 88 trans am, tpi. The AC compressor is a v belt on the the drivers side. Im going to start testing the ac to see whats wrong with it, Im trying to find the harness that gives it power to see if im getting a 12v feed into it and to test the clutch on the compressor. I see two harnesses going to it, one is right inbetween the pulley and the compressor, its a flat one, and theres a round on going to the back of the compressor. which is the one that give the compressor power and what does the other one do?