Strange Electrical issue - Headlight gets dim, then goes out By rickm87 (Read 456 times)

[rickm87]

2008 T something Chinese 150 cc GY6. I have installed a new stator, regulator and battery. The headlight and taillight work off of the stator and only work with engine running. The brake light and turn signals work off of the battery.

The headlight and taillight work fine when the motor is first started, but after about five seconds they start getting dimmer. This continues for about 30 seconds until the headlights get so dim you can't see them. If you shut off motor and restart it, the process repeats itself.
When the lights go dim, if you apply brake (engine running) the headlight will work until you release brake.

I was thinking maybe a grounding issue but haven't found that yet. I did find one ground wire that was hooked frame to frame and I removed one end and conncted to motor.

Any thoughts/comments you have are appreciated - Rick

[JR]

Pressing the brake handle and it staying on indicates poor grounding for sure, that's where I would put my efforts at first.

JR