Hi, sorry for the delay. Just checked my instructions and yes, there is only 1 wire to connect inside the car except for the connector to the actual cruise control stalk. This is on a v6 model, might be different for other models. My instructions were going on about dismantling the fuse board to connect this wire into the car. This wire had a connector that slipped into a slot in the fuse board. But I couldn't dismantle as the instuctions asked. So I cut of this plastic connector and connected the wire into the wiring harness. I believe this wire is to supply power to the switch but I couldn't guarantee this. Good luck. :o