AC Regulator Voltage Test on Honda XR650R To test the AC regulator voltage on Honda XR650R, perform the followings:

  1. Warm up the engine (3 minutes). Then stop the engine and remove the front visor with the headlight connectors connected.
  2. Connect a voltmeter (+) probe to Blue wire terminal, and (-) probe to Green wire terminal.
  3. Connect a tachometer. Start the engine and check the tachometer reading while increasing engine speed slowly.
  4. Specific Voltage: 13.5 – 14.5V at 4,500 rpm


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