I have an 08 XB12S and within the last week, had 3 headlamp bulbs blown.
Having read similar problems on here, I checked battery voltage, 12.6v. Started engine and voltage went to 14.4v, revving showed no increase in voltage.

Am I correct in assuming this means the stator is working , as we have an increase in voltage on running, but the regulator is dead as no increase on throttle?