You use a short piece of wire. The wire on the car is 18 gauge so just about anything you have laying around will work. I use a number 12 gauge solid wire as it is stiff, insulated and easy to work with. I checked the wiring diagrams and the wires you are concerned with are Blue/green coming from the A/C control module inside the car. When you take the connector apart you will see in very small numbers the pin designation. It is pin three male coming from the A/C module, connecting to the female which runs to the compressor clutch. The wire on the female part of the connector looks black to me. Simple take your wire put one end into the female socket in the connector and place the other end of the wire on the positive post of the battery. No need to start the car or even have the key in the ignition switch. You will hear the clutch engage when you make contact with the positive battery post. This is much easier than trying to get down to the compressor and fiddling around in the tight spaces down there as everything is up topside and easy to reach. Added benefit is it test the wiring from the connector to the clutch at the same time.