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Burning out the bulbs

 
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Ootscoot
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Joined: 04 Feb 2015
Posts: 31
Location: Santa Barbara
Genuine Buddy 125, Kick

PostPosted: Fri May 03, 2019 3:58 am    Post subject: Burning out the bulbs Reply with quote

Buddy 125, has burned 3 headlight bulbs. Replaced the regulator twice with OEM parts. The last headlight bulb was an LED aftermarket - worked the longest, about one month of driving, but last night the bulb got dimmer, then very bright and then out. Multi meter shows 13.3 volts at idle, 14.2 revved, though there must have been a voltage burst for the light to get so bright and then burn. Any ideas? Could it be the battery? Or stator?
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johnk
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Joined: 03 Sep 2018
Posts: 107

2003 Stella 2T & 2012 Stella 4T

PostPosted: Fri May 03, 2019 10:56 am    Post subject: Reply with quote

There are some suggestions in a similar post here.
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Stanza
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Joined: 29 Jan 2018
Posts: 398
Location: Chicago
Puch Maxi, Honda C70

PostPosted: Fri May 03, 2019 4:00 pm    Post subject: Reply with quote

Hi Ootscoot,
The battery isn't involved in the headlight circuit, that's directly run off the Stator, and through the regulator/rectifier. If you are getting a consistent 14v at the headlight from the regulator, then I would think you may have something else going on. Two OEM regulators should not have failed without something else killing them. Have you tested output from the stator? If I remember correctly, the lighting wire is the yellow one coming out of the stator plug. Check to see what AC voltage you are getting out of that. Sidenote, that headlight socket is outputting AC. Was the LED headlight bulb a model that was compatible with AC current, or was it a DC only? If the latter, that may have been what cooked it regardless.

Barring that, it's possible that you have an intermittent short. The spot where the wiring harness pivots against the upper steering tube is the usual suspect. I'd strip back some of the sheathing and make sure you don't have a breakage.
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