No voltage at headlight By oldman (Read 1,954 times)

[oldman]

I have no voltage at my headlight. It's a 50cc Pagsta chopper. Headlight doesn't work. First it had highbeam only, then no lights. There seems to be a charging problem, but all of the other lights work. Reving the thing up doesn't help. Actually, at idle, there is negative voltage at the headlight. When you rev it up, it goes to zero, or up to a fraction on one volt. Any help?

[oldman]

Actually, I don't think the tail lights and blinkers work off the same circuit. The headlight brightens when you rev it up, but the blinkers and tail light always burns bright. Also, the tail light works in the key on position, but the headlight doesn't come on until you crank the scooter up.
I'll check the dimmer switch and see how that looks. Is it possible that the other lights work off the battery, but the headlight works directly off the stator?
Can you give me some tips for testing out the charging system?

Thanks,

[mapbike]

Based on what I have read here so far I would say that if you are correct and the head light does work strictly off the charging system (Stator) when engine is running and the other lights are tied into direct current from battery when the ignition switch is on and your charging system is as discribed in your first post "There seems to be a charging problem" it seems to me that you have just about solved your problem here, if headlight isnt working and stator isnt charging battery, you either have bad connection between stator and headlight and battery or stator is fried, I would check all connections as Dr. JR has already said and then if those are all good, I would find a source for a new stator and find out if you will need a special puller for the flywheel or not and then I would go about replacing the stator, check for fuse or any open wire between stator and headlight/battery, if all good I say replace stator, thats most likely your problem.

Good Luck....hope you get this resolved quickly and it's easy to fix.
Shan

[mapbike]

Thanks JR, the thing that stuck out to me is the statement "There seems to be a charging problem" this is what lead me to think that if no charge and no headlight and headlight runs off stator exclusively then it would seem to be a stator issue, but as you pointed out above I guess maybe I missed some of what was posted about the problem......go get-em Dr.JR I know your good at this stuff...!
Shan