- Voltage regulator: The voltage regulator controls the amount of voltage that is sent to the battery. If the voltage regulator is faulty, it may not be sending enough voltage to the battery, causing it to stay at 12 volts.
- Stator: The stator is responsible for generating electricity for the motorcycle's electrical system. If the stator is faulty, it may not be producing enough electricity, causing the battery to stay at 12 volts.
- Battery: Even though the battery is new it may still be faulty and not holding a charge.
- Wiring: There may be a problem with the wiring between the battery, voltage regulator, and stator. This could cause the battery to not receive enough voltage.
Next steps:
1. Check the voltage at the battery terminals while the motorcycle is running. If the voltage is still at 12 volts, the problem is likely with the voltage regulator or stator.
2. Check the resistance of the stator windings. If the resistance is too high, the stator may be faulty and need to be replaced.
3. Check the voltage output of the voltage regulator. If the voltage output is too low, the voltage regulator may be faulty and need to be replaced.
4. Check the wiring between the battery, voltage regulator, and stator. Make sure that all of the connections are tight and that there are no breaks in the wires.
5. If you are still unable to find the problem, you may need to take your motorcycle to a qualified mechanic for further diagnosis.
