Step 6Killswitch
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The kill switch is very handy. For example, you can let the engine cool down when it starts overheating and pinging. It can also let the engine assist with braking which is a helpful safety feature. I used a simple momentary, normally closed switch with a flush mount housing and basic copper wire for this task. The wiring just connects to the two terminals on the coil to allow the switch to interrupt the spark when pressed. The switch is mounted into a piece of plywood and fixed to the handle bars with an aluminum bracket and a single bolt.