Buell XB12X Ulysses License Plate Bulb Size

The Buell XB12X Ulysses uses a 12961 bulb size for the license plate fixture. The replacement chart covers 2006 to 2010 model years with corresponding bulb specifications.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2006-2010	12961

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

Other Locations

Additional Notes

The Buell XB12X Ulysses uses the 12961 bulb for the license plate position across the 2006-2010 model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor.
T10 refers to the bulb's tubular shape, with the number indicating a width of 10 millimeters.
The 12961 operates on 12 volts and draws 5 watts, which is typical for low-current auxiliary lighting positions such as license plate illumination.
The base type is W2.1x9.5d, a wedge-style base that relies on tension from the socket rather than a bayonet or screw mechanism to maintain contact.
The W2.1x9.5d designation describes the wedge base geometry, where 2.1 refers to the wire contact width and 9.5 refers to the insertion depth in millimeters.
Because the 12961 uses a wedge base, substitution with bulbs using bayonet or festoon bases is not compatible with the XB12X Ulysses license plate socket.
Any replacement bulb for this position must match the W2.1x9.5d base, 12V operating voltage, and 5W wattage to maintain correct fitment and circuit load.