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Joined: Jul 18, 2014 5:12:07 GMT -5
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Post by amcjeeper on Jul 24, 2014 11:28:30 GMT -5
Got my scooter running right and rode to work last nite. Its a 2008 Jonway T-12. About 22 miles one way to work. At about the 15m point the headlights went really dim, but would brighten back up if I pulled the brake lever. Dove into the wiring this morning after work since the last four miles with the front brake lever partially pressed was rather unpleasant. I started by cleaning and tightening up grounds and battery connections. Then pull the front shroud off to find the regulator. The regulator is a four pin, whatever came on the scoot. The white wire showed no voltage DC, but 12.7 v AC at idle, then jumped to around 18.7v AC @4000 rpm. The red wire showed 12.4v DC at idle and jumped to 13.4v DC @4000 rpm. The green wire showed no voltage DC or AC. And the yellow wire gave me negative readings of around -4v DC. When I check voltage at the headlight connection I got -4v DC there as well. If I've read correctly, the output on the yellow wire should be a regulated 12v DC to power the lights correct?? So this means faulty regulator. Also can someone tell me what that other small black box with all the wires is? Security system? It does have one.
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Post by tvnacman on Jul 24, 2014 12:40:22 GMT -5
Yes the other box is the alarm . I would not be so quick to condem the regulator . Find the stator plug and unplug it . Then check the ac voltage on the yellow and white direct from the stator st idle and 4000rpm .
John
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New Rider
Currently Offline
Posts: 14
Likes: 0
Joined: Jul 18, 2014 5:12:07 GMT -5
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Post by amcjeeper on Jul 25, 2014 17:35:12 GMT -5
Thanks for the reply John. Checked stator voltages today. I have no AC power coming from either the yellow or white wire directly from the stator with the connector unplugged. When plugged in I get 28v AC on the white which I assume is coming back up the wire instead of from the stator. So now I can assume its the stator?
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Post by geh3333 on Jul 25, 2014 17:55:41 GMT -5
Sounds like the regulator to me . Possibly the regulators ground " in the board " is bad and as the lever switch is activated and grounded it then allows the voltage to pass to the lights .
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