Ford F-800 Back Up Light Bulb Size

The Ford F-800 back up light utilizes a single 1156 bulb size for the rear illumination system. Available data covers the production range from 1980 through 1999 for the specified vehicle.

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
1980-1999	1156

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156

Other Locations

Additional Notes

The Ford F-800 uses the 1156 bulb for its back up light across the full 1980-1999 model year range covered by these specifications.
The 1156 is a single-filament bulb, meaning it serves one lighting function rather than combining two, such as stop and tail, into a shared housing.
It operates on a 12-volt electrical system and draws 21 watts, which is consistent with standard incandescent automotive lighting of that era.
The 1156 uses a BA15s bayonet base, where "BA15s" denotes a single-contact bayonet fitting with a 15mm collar width.
The BA15s base is distinct from the BA15d double-contact bayonet base, and the two are not interchangeable despite their similar physical profile.
The 1156 is an ANSI-standardized bulb recognized across the United States and Canada, meaning it conforms to a defined set of electrical and physical tolerances rather than being a proprietary specification.
Because the same bulb size is specified for every model year in this range, a single 1156 bulb serves as the correct fitment for the Ford F-800 back up light regardless of which year within 1980-1999 is being serviced.