Originally Posted by 99yam40
The key switch when in the off position should take the white wire to ground.
The on portion is for anything you need to have 12 + to like bottom machine, GPS, or other accessories
I have a GENERIC OFF-ON-START (spring-loaded start position) switch.
This means the 12v+ is at the B (battery) terminal connector, the "ON" would take the 12v + to whatever device is connected (like the igniiton 12v+ switched supply), and the "START" would have the brown lead to the starter solenoid, giving it the 12v+ to crank the starter.
There is NO ground connection on my switch; just 3 terminals. I will connect as above, and use a ground wire from the negative battery side, through the kill switch, and on to the motor where I'll splice into the white wire (ignition) lead to ground it and kill the motor. What I wanted to be sure of is that grounding the white wire at the motor would not damage the CDI or other parts there.