I'm having an issue with the headlight on my Coolster 110cc quad. When I turn the key on the taillight comes on but when I turn on the switch for the headlight, nothing happens. There are three wires that go to the connector that connects to the headlight. A white, a blue and a green wires. I traced the white wire to the voltage regulator. I traced the green wire to the engine ground and the blue with goe's to the switch and to another connector that has nothing hooked to it. I believe the issue is either the switch or that connector that has nothing connected to in at the front of the quad. I made a video of this and tried to attach it but it didn't seem to be working. It's a MOV file so not sure why it's not working. Thanks so much for your help!

 

Is the machine running of off? The headlight will not come on with the machine off like a normal quad..

 

I have tried both ways, with it running and with it off and the headlight doesn't work either time. I have also checked the bulbs and they are good. Now I do know that with the quad turned on but not running the taillight does come on, is that normal?

 

Indeed, very interesting thread

 

Thats normal that is were the machine gets its info that the brake is engaged