Ford F-250 Glove Box Bulb Size

The Ford F-250 glove box utilizes bulb sizes 161, 194, and 1891 across various production periods. Available information spans a time range from 1973 through 1999 for the specified 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
1999	161
1992-1996	161
1988-1991	194
1985-1986	1891
1973-1979	1891

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W.	161
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W.	1891

Other Locations

Additional Notes

The Ford F-250 glove box uses three distinct bulb sizes across its model years: the 161, 194, and 1891, all of which conform to ANSI standards recognized in both the United States and Canada.
The 161 bulb is a T10 miniature wedge type rated at 12V and 1W, making it the lowest-wattage option among the three bulbs specified for this application.
The 194 bulb shares the same T10 miniature wedge form factor as the 161 but operates at a higher wattage of 3.78W at 12V, meaning the two bulbs are not interchangeable despite their identical base type.
The 1891 bulb is a T5 miniature wedge type rated at 12V and 2W, which uses a physically smaller base than the T10 bulbs and is therefore not compatible with sockets designed for the 161 or 194.
The Ford F-250 uses the 161 bulb for the glove box in the 1992-1996 and 1999 model years.
The 194 bulb applies to the 1988-1991 model years for this application.
The 1891 bulb covers the 1973-1979, 1985, and 1986 model years in this position.
Because the T5 and T10 wedge bases differ in physical size, substituting a T10 bulb into a T5 socket or vice versa is not a viable fitment option regardless of voltage compatibility.