Honda Motorcycle VTX1800S License Plate Bulb Size

The Honda Motorcycle VTX1800S license plate light requires a 168 bulb size for proper illumination of the rear registration area. Available data for the specific bulb covers the range from 2002 to 2006.

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
2002-2006	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The Honda Motorcycle VTX1800S uses the 168 bulb size for the license plate position across the 2002-2006 model years.
The 168 bulb is an ANSI-standardized type recognized in both the United States and Canada.
It is a miniature wedge bulb, classified under the T10 form factor, which refers to a tubular bulge shape approximately 10 millimeters wide at its widest point.
The 168 operates at 12 volts, consistent with the standard electrical systems found in production motorcycles.
Its rated wattage of 4.9W places it in the low-power range, typical for license plate illumination where minimal heat output and low current draw are practical.
The wedge base design means the bulb is held in its socket by the tension of the base itself, with no separate metal bayonet pins or screw threads involved in retention.
The T10 wedge format is widely shared across automotive and motorcycle applications, which means the 168 is physically interchangeable with other T10 wedge bulbs of the same voltage rating, provided wattage compatibility is confirmed.
Despite physical interchangeability with some T10 variants, substituting bulbs with differing wattage ratings can affect socket integrity and circuit load on the VTX1800S.