Jeep DJ3 Back Up Light Bulb Size

The Jeep DJ3 back up light requires a 1156 or 1073 bulb size for proper illumination. The replacement chart covers vehicle production spanning 1959 to 1966 with corresponding bulb specifications.

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
1966	1156
1965	1073
1964	1156
1963	1073
1962	1156
1961	1073
1960	1156
1959	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. Lower wattage variant of 1156. 12V, 13W.	1073

Other Locations

Additional Notes

The Jeep DJ3 backup light specifications cover model years 1959-1966, with two distinct bulb types alternating across those years.
The 1156 and 1073 are both ANSI-standardized bulb types recognized in the US and Canadian markets.
Both bulb types share the BA15s bayonet base, a single-contact base design where a single pin is positioned on the side of the base.
Both bulbs operate at 12 volts, consistent with the 12-volt electrical systems standard in automotive applications of that era.
The 1156 is rated at 21 watts, while the 1073 is rated at 13 watts, meaning the two types differ significantly in light output despite sharing the same base configuration.
The Jeep DJ3 used the 1156 bulb in 1960, 1962, 1964, and 1966, and the 1073 in 1959, 1961, 1963, and 1965.
Because the 1156 and 1073 share the BA15s bayonet base, one physically fits the socket of the other, but the wattage difference means they are not direct equivalents and substitution would affect light output.