The Buell XB12S Lightning uses H7 bulbs for both high beam and low beam headlight applications, with this bulb size remaining consistent across the model line. The replacement chart covers vehicle production spanning 2004 to 2010, detailing bulb size specifications for each year within that range.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H7 is the sole bulb type specified across all headlight positions on the Buell XB12S Lightning, covering model years 2004-2010.
The H7 is a single-filament halogen bulb operating at 12 volts and 55 watts, mounted on a PX26d base.
Because the H7 carries a single filament, the Buell XB12S Lightning uses separate bulbs for its high beam and low beam functions rather than a dual-filament unit handling both.
The H7 bulb conforms to the ECE standard, which governs lighting equipment across Europe and many other markets worldwide, and it also holds approval in the United States and Japan.
The PX26d base is a keyed, single-pin connector design, meaning only bulbs with that specific base configuration are physically compatible with the socket.
Both the high beam and low beam positions on the Buell XB12S Lightning share the same H7 specification across all listed years, so the same bulb part serves either socket.