Loss of 12V Power

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Losing the entire 12V circuit can happen because the circuit is powered by a DC-DC 12V Converter.

Related Confirming Symptoms
  • Headlamp, turn signals, and running/brake lights are all off.
  • Dash/instrument cluster is on and the bike can operate.
Potential Causes
  • DC-DC converter-related:
  • Broken ground/negative/return line in the 12V wiring bundle on the left side of the tank area.
  • An MBB internal fault or error that results in no enable signal to the DC-DC 12V Converter.