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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