Loss of 12V Power

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

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:
    • High voltage input fuse to the DC-DC converter is blown or disconnected.
    • Loose connector to the DC-DC converter.
    • Enable signal failure between the MBB and DC-DC converter.
    • General equipment failure of the DC-DC converter.
  • Broken ground/negative/return line in the 12V wiring bundle on the left side of the tank area.