Jeep DJ5 Back Up Light Bulb Size

The Jeep DJ5 back up light utilizes 1156, 199, 1073, and P21W bulb sizes according to the provided technical specifications for the lighting assembly. Available information covers the span from 1965 through 1983 for the various configurations listed in the data set.

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
1979-1983	1156
1977-1978	199
1975-1976	1156
1974	199
1972-1973	1156
1968	1073
1965-1967	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
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	1073

Other Locations

Additional Notes

The back up light bulb specifications for the Jeep DJ5 span model years 1965 through 1983, with three distinct bulb types used across that period: the 1156, the 199, and the 1073.
The 1156 is the most frequently specified bulb across the DJ5 lineup, appearing in 1965-1967, 1972-1973, 1975-1976, and 1979-1983.
All three bulb types share the BA15s single-contact bayonet base and operate at 12 volts, meaning they are physically interchangeable at the socket level.
Despite sharing the same base type, the 1156 and 199 are not identical. The 199 is a variant of the 1156 and, while both are rated at 12V and 21W, substituting one for the other without confirming fitment compatibility is inadvisable.
The 1073 is a lower-wattage variant of the 1156, rated at 13W rather than 21W. It was specified only for the 1968 DJ5, making it the sole year in the dataset to use this bulb for the back up light position.
The reduced wattage of the 1073 means it produces less light output than the 1156 or 199. Substituting a 21W bulb in a socket designed for a 13W application may affect circuit load tolerances.
The 199 bulb was specified for the Jeep DJ5 in 1974, 1977, and 1978, representing three non-consecutive model years within the broader dataset.
All three bulb types carry ANSI standardization applicable to the United States and Canada, indicating they conform to a defined set of dimensional and electrical performance criteria within those markets.