Ford Bronco Map Light Bulb Size

The Ford Bronco map light utilizes bulb sizes 561, 912, 906, 105, and 1895 depending on the specific version of the vehicle. Available information covers the period from 1979 through 1996 for the listed 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
1995-1996	561
1994	912
1992-1993	906
1987-1991	105
1979-1986	1895

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.	912
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	906
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	105
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 0.9W.	1895

Other Locations

Additional Notes

The Ford Bronco map light bulb specifications span the 1979-1996 model years, with five distinct bulb sizes used across that range: 561, 912, 906, 105, and 1895.
The 1895 bulb is the most frequently specified across the Ford Bronco map light fitments, covering the 1979-1986 model years. It is a T5 miniature wedge bulb rated at 12V and 0.9W, making it the lowest-wattage bulb in these specifications.
The 105 bulb is the second most frequently specified, covering the 1987-1991 model years. It uses a BA15s bayonet base and is a single-filament bulb rated at 12V and 13W. It is a variant of the widely known 1156 bulb type.
The 561 is a festoon-style bulb with a 44mm length and end-cap contacts, rated at 12V and 12W. It is specified for the 1995-1996 Ford Bronco map light position.
Festoon bulbs such as the 561 make contact at both ends of the bulb body rather than through a base, which distinguishes them physically from wedge and bayonet types also present in these specifications.
The 906 is a T10 miniature wedge bulb rated at 12V and 8W, specified for the 1992-1993 model years. At 8W, it draws less power than the 912 and 561 bulbs used in adjacent model years.
The 912 is a T15 wedge bulb rated at 12V and 12W, specified solely for the 1994 Ford Bronco. It is a variant of the 921 bulb, meaning the two share a base and voltage rating but differ in wattage.
The T10, T15, and T5 designations on the wedge bulbs in these specifications refer to the bulb body width expressed in eighths of an inch, with T5 being narrower than T10, and T10 narrower than T15. These size differences affect socket fitment and the bulbs are not interchangeable with one another.
All five bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada, indicating standardized physical and electrical tolerances across the range.
The base type changes notably across the specification range. The 1979-1986 years use a T5 wedge base, the 1987-1991 years use a BA15s bayonet base, and the 1992-1996 years use either a T10 wedge, T15 wedge, or festoon end-cap format, none of which are cross-compatible with the bayonet socket used in the preceding years.