Harley-Davidson FLHXXX Street Glide Trike License Plate Bulb Size

Harley-Davidson FLHXXX Street Glide Trike utilizes a 168 bulb size for the license plate fixture. The replacement chart covers 2010 to 2011 production years with corresponding bulb size 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
2010-2011	168

Bulb Specifications

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

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Additional Notes

The T10 miniature wedge is the bulb type used for the license plate position on the Harley-Davidson FLHXXX Street Glide Trike across the 2010-2011 model years.
The 168 designation follows the ANSI standardization system, which assigns numeric codes to bulbs based on their electrical and physical characteristics for consistent cross-manufacturer identification in the United States and Canada.
The 168 bulb operates at 12 volts with a power draw of 4.9 watts, placing it in the low-wattage range typical of auxiliary and indicator lighting positions.
The T10 form factor refers to a tubular bulb body with a wedge-style base, which uses the glass envelope itself as the retention mechanism rather than a separate metal base with pins.
The wedge base design means the bulb is held in its socket by friction and slight compression, making it a tool-free replacement in most applications.