The plug near the wiper motor is for the AC and screen or just the screen or just the AC. There is 12 wires in the plug, I think the top 4 are for the screen, the others are for the AC. It would be easier to find a car without AC to get the loom out of, as the AC wiring goes all around the bay. If your car has AC the plug will already be in use for that, so you would need to cut and join the screen wires, these wire are only to switch on the relay.