Harley-Davidson XLH1200 headlight bulbs utilize a 9003 size for both high and low beam functions. The replacement chart covers 1988 to 2003 model year specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Harley-Davidson XLH1200 uses the 9003 bulb size for both high beam and low beam headlight positions across all model years from 1988-2003.
The 9003 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments to serve both the high beam and low beam functions within one housing.
The 9003 bulb operates on a 12-volt electrical system and draws 60 watts on the high beam filament and 55 watts on the low beam filament.
The 9003 uses a P43t base, which is a bayonet-style mount with a 43mm flange. This base type determines physical fitment into the headlight housing and is not interchangeable with other base configurations.
The 9003 designation follows the ANSI standard as applied in the United States and Canada. It is electrically and functionally equivalent to the H4 bulb used under international ECE standards, though the two designations reflect different regulatory frameworks and may carry minor physical differences that affect direct substitution.