Lincoln Mark VI License Plate Bulb Size

The Lincoln Mark VI license plate light requires a 168 bulb size for proper installation and function. Data for the specified lighting component covers the range from 1980 to 1983.

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
1980-1983	168

Bulb Specifications

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

Other Locations

Additional Notes

The Lincoln Mark VI uses the 168 bulb for its license plate position across the 1980-1983 model years.
The 168 is a T10 miniature wedge bulb, meaning it connects to its socket through a wedge-shaped base rather than a bayonet or screw fitting.
The 168 operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of automotive auxiliary lighting positions such as license plate illumination.
The 168 conforms to ANSI standards recognized in both the United States and Canada, indicating a standardized specification for the bulb's electrical and physical characteristics.
The T10 designation refers to the bulb's tubular envelope size, expressed in eighths of an inch, making the envelope 10/8 or 1.25 inches wide.
The wedge base design of the 168 allows direct substitution with other T10 wedge bulbs sharing the same voltage and wattage rating, though fitment into the Mark VI's socket depends on physical compatibility with the T10 wedge form factor specifically.