I'm guessing you've checked all the fuses at this point. I'd try back probing the wires at the A/C clutch with a test light (with key on, A/C on, engine off) to see if you're getting power to the clutch assy. Without a wiring diagram, I'm not sure which wire supplies power and which is the ground. If you have power there but still no clutch closing, disconnect the plug, jumper from the battery positive to the + wire on the clutch. If it isn't shorted out, it should close each time to touch power to the connector.