Wire qestions

Hi, I have the power king 80cc engine (looks like the one on that bike in the spooky tooth cycles sponsors add) I dont know how to wire the kill switch. I have a blue a black and a white wire leading from the engine. I have the blue and black connected to the CD ignition. what do I connect the black and red wire thats leading from the kill switch?

Thanks for your help!!!

black goes to frame(ground)
red goes to blue
by pushing kill switch, you short the blue thru frame, causing no spark and killing engine

if you look at the similar threads at the bottom of this page you can read more about it