I generally plug the wires of the headlight and use the whole front wiring loom when I put me race fairings on. As I am using my factory fairings for track days, I just bolt it back in place but I have seen guys using a cable tie to place it to the same location on the front. I think you should be careful where you place it as too low and it may cut of the engine into a corner.
Rather than seperating the wiring for the headlight from the sensor, I reckon you look for a spare at the wreckers. I see them around for $50-60 at Vic Motorcycle wreck.
