Lincoln Mark VIII Map Light Bulb Size

The Lincoln Mark VIII map light utilizes 168 and 906 bulb sizes for the interior lighting components. Available data for 168 and 906 bulbs covers the 1993 to 1998 range.

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
1995-1998	168
1993-1994	906

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	906

Other Locations

Additional Notes

The Lincoln Mark VIII map light uses two distinct bulb sizes across its production run: the 168 for 1995-1998 models and the 906 for 1993-1994 models.
Both the 168 and 906 are ANSI-standardized bulbs recognized in the US and Canada, and both share the T10 miniature wedge form factor.
Because the 168 and 906 share the same T10 wedge base, they are physically interchangeable in terms of socket fitment, though they are not electrically equivalent.
The 168 bulb operates at 12V and draws 4.9W, while the 906 operates at 12V but draws 8W, representing a notable difference in power consumption between the two model year groups.
The higher wattage of the 906 bulb used in 1993-1994 models means the map light circuit in those vehicles was designed to handle a greater electrical load than in the 1995-1998 configuration.
Installing a 906 in place of a 168 would introduce a higher wattage than the later circuit was specified for, which carries a risk of exceeding the intended load on the socket or fuse.