I have the skyhawk 66cc GT5 kit. Almost done! Anyway, got the throttle installed and stuff. It has a yellow killswitch on the throttle grip. It has a green and a yellow wire coming from it. It looks like the yellow wire connects to the white wire coming out of the CDI. The green wire has a circle tip on it, like a ground wire would look like on something you were installing on your car. The instructions say "OPTIONAL NEW STYLE THROTTLE with kill switch: one wire goes to white wire from engine and other to frame grd" Seems pretty direct in telling me i have to ground the green wire to the frame of my bike. But why? How does that do anything?