Mercury Capri License Plate Bulb Size

The Mercury Capri license plate light uses 168 and 194 bulb sizes according to the provided specifications for the vehicle. Available data covers the range from 1970 to 1994 for the specified lighting components.

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
1991-1994	194
1979-1986	168
1970-1977	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The two bulb types specified for the Mercury Capri license plate position are the 194 and the 168, both of which are miniature wedge bulbs sharing the T10 form factor and operating on a 12-volt circuit.
Although the 194 and 168 share the same T10 wedge base, they differ in wattage. The 194 draws 3.78 watts, while the 168 draws 4.9 watts, making them non-interchangeable despite their physical similarity.
Both bulb types conform to ANSI standards recognized in the United States and Canada.
The Mercury Capri (1991-1994) uses the 194 bulb for the license plate position.
Model years 1979-1986 use the 168 bulb for the license plate position.
Model years 1970-1977 return to the 194 bulb specification for the license plate position.
The T10 wedge base is a pinless design in which the glass envelope itself is held in place by tension within the socket, a common construction for low-wattage automotive lighting applications.
The wattage difference between the 194 and 168 means that substituting one for the other could result in either an underlit plate lamp or excess heat load on a socket rated for the lower-wattage bulb.