Dodge D150 Back Up Light Bulb Size

The Dodge D150 back up light utilizes 1156, P21W, and 199 bulb sizes for the rear illumination system. Data for the specific vehicle components covers the range from 1977 through 1993.

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
1979-1993	1156
1978	199
1977	1156

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	199

Other Locations

Additional Notes

The Dodge D150 uses the 1156 bulb as the back up light bulb across the 1979-1993 model years, with the sole exception of 1978, which uses the 199 bulb instead.
The 1156 is an ANSI-standardized bulb recognized in both the United States and Canada, operating at 12 volts with a 21-watt output.
The 1156 uses a BA15s bayonet base, which is a single-contact bayonet mount with a 15mm base width.
The single-filament design of the 1156 means it serves one lighting function only, which is consistent with its dedicated role as a back up light bulb.
The 199 bulb used in the 1978 Dodge D150 shares the same BA15s bayonet base, 12-volt operating voltage, and 21-watt output as the 1156, and is classified as a variant of it under ANSI standards.
Because the 199 is a variant of the 1156 and shares the same base type and electrical ratings, the two bulbs are closely related in construction, though they carry distinct ANSI designations.
The BA15s bayonet base on both the 1156 and 199 bulbs requires a single-contact socket, meaning sockets designed for dual-contact bayonet bulbs are not compatible.