How to wire a killswitch that has a positive and a ground wire coming from it?

Ryanl2000

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Nov 18, 2025
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Minnesota
So I have a ETM XL that I got as a project bike that I'm working on wiring up and there are no parts or even info that i can find available anywhere. Its pretty much the same as all the other 72v 3000w bikes with a 4 speed transmission. The controller was shot when i got It so i put a fardriver nd72680 controller on it and got it up and running but it was missing the handle bar controlls so I picked up a pair from a Revolt rtx-1 witch is similar to the XL. Im trying to wire the right side control up witch has a killswitch, light switch and erupt (boost) button. I checked all the wires with a voltmeter and opened jt up to double check it has a black ground wire that runs to the killswitch and light switch, a green wire that runs to killswitch, a blue wire to light switch and a green/yellow wire and yellow/red wire to the erupt button. I'm trying to figure out how I can connect the killswitch up and still beable to use the light switch as well since they share the same ground wire? Also what would be the best way to wire the light switch? I was thinking of running the blue wire to the orange "turn on" wire of my dc to dc converter and just wire the headlight directly to that. Would that work or does anyone have a better option?
 
Moving this thread to EScooters/EMotorcycles.
 
There is a pin that you can set to PARK when it's connected to ground. Might be able to do it with that one. Run the black wire to any ground, then the green to that PARK GND pin and the blue to 12V+
 
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