i just got a pro design kill switch for christmas for my 400ex and where exactly do i hook up the wires for it to work thanks alot

 

The instructions will tell you which wire is which
one goes to the green coil wire I belive and one is a ground. I hooked mine right into my wire harness for my kill switch.

89 TRX250R

 

hey the way you hook it up is on wire to a ground such as the frame and the other wire coming from the pd kill switch has to be spliced into a black wire with a yellow tracer by your rev box in that area you will see it

 

take apart your starter and headlight and kill swith button assembly and tap into the wires on your red kill switch dosent matter which wire just make sure one each off red kill swictch thats how i have mine and since it serves the same function why not use the wires designed to do that. p.s. (I have an associates degree in electronics)