Jeep CJ6 Back Up Light Bulb Size

The Jeep CJ6 back up light bulb accommodates 3 distinct sizes: 1156, 199, and 1073. The replacement chart covers vehicle production years spanning 1959 to 1975.

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
1975	1156
1974	199
1972-1973	1156
1967-1968	1156
1966	1073
1965	1156
1964	1073
1961-1963	1156
1959-1960	1073

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 1156 bulb is the most frequently specified size for the Jeep CJ6 backup light, appearing across the 1961-1968 and 1972-1973 and 1975 model years.
The 1156 is an ANSI-standard single-filament bulb with a BA15s bayonet base, rated at 12 volts and 21 watts.
The 1073 bulb shares the same BA15s bayonet base and 12-volt rating as the 1156 but draws only 13 watts, making it a lower-output variant of the same base type.
The 1073 is specified for the Jeep CJ6 in the 1959-1960 and 1964 and 1966 model years.
Because the 1073 and 1156 share the same BA15s bayonet base, they are physically interchangeable in the socket, though their wattage outputs differ.
The 199 bulb is listed only for the 1974 model year and is described as a variant of the 1156, carrying the same 12-volt, 21-watt rating and BA15s bayonet base.
All three bulb types across these specifications, the 1156, 1073, and 199, conform to ANSI standards applicable in both the United States and Canada.
The single-filament design shared by all three bulb types is consistent with a dedicated backup light function, which requires only one light state rather than the dual-intensity operation of a two-filament bulb.