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You report on: "No lights, but engine is running!"

Please check at first if comes power from the regulator. Pull-off the red and the brown cable from the regularor's connector for that. Connect a headlight's light bulb with those two regulator cables. Start the engine!
  • If the bulb shines you have to look for the problem in the further wiring. Probably:
    # the cable that goes to the main switch or the main switch itself is damaged
    # insufficient or no ground connection
  • If the bulb stays dark, you have maybe a mistake inside the regulator or stator.
    # Disconnect the two black cables that run from the stator to the regulator ...
    # ... and measure the AC voltage at these black cables with engine running.

    In a 12 volt system should be considerably more than 20 volts (up to 70), at a 6 volt system more than 10 volts. If it is so, the stator is okay and probably the regulator is defect. Take a sniff at the regulator, if it smells burned - it is damaged (mostly caused by a wrong wiring)!

    If there is no power at those black generator cables, you have probably a faulty stator. For a second check please measure the resistance of the stator coils.
    ADVICE: You won't measure the "0.xxx Ohm" with a cheap ohm meter.
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