Dodge D250 Back Up Light Bulb Size

The Dodge D250 back up light utilizes 1156 and P21W bulb sizes for the rear illumination system. Data for the specified components spans from 1981 through 1993 for the listed 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
1981-1993	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 Dodge D250 uses the 1156 bulb for the back up light across all listed model years, spanning 1981-1993.
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 at 21 watts, which is consistent with standard automotive incandescent output for reverse lighting applications.
The 1156 uses a BA15s bayonet base, a single-contact mount where the bulb is inserted and twisted to lock into the socket.
The BA15s designation distinguishes it from the visually similar BA15d base, which has two contacts. The two bases are not interchangeable despite sharing the same physical pin spacing.
The 1156 conforms to ANSI standards recognized in both the United States and Canada, indicating a standardized specification shared across North American automotive applications.