Lincoln Mark LT License Plate Bulb Size

The Lincoln Mark LT license plate requires a 194 bulb size for the exterior lighting system. Data for the specified component covers the range from 2006 to 2008.

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
2006-2008	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The Lincoln Mark LT uses the 194 bulb for its license plate lighting across the 2006-2008 model years.
The 194 is classified as a miniature wedge bulb under the T10 form factor, a designation that refers to the bulb's tubular shape and base style rather than a proprietary specification.
It operates at 12 volts with a power draw of 3.78 watts, consistent with low-consumption automotive lighting applications.
The 194 follows the ANSI standard recognized in both the United States and Canada, placing it within a widely adopted North American automotive lighting classification system.
The T10 wedge base is a push-in fitment with no locking mechanism, relying on socket tension to hold the bulb in place.
Because the 194 is an ANSI-standardized type, direct-replacement alternatives sharing the same T10 wedge base and 12V rating are generally considered interchangeable at the socket level, though wattage differences between substitutes may affect socket compatibility.