Jeep J-4800 Back Up Light Bulb Size

The Jeep J-4800 back up light uses a 199 or 1156 bulb size for this model. The replacement chart covers vehicle production years from 1972 to 1973 with corresponding bulb size 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
1973	199
1972	1156

Bulb Specifications

Description	Bulb Size
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. 12V, 21W.	1156

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Additional Notes

The Jeep J-4800 backup light uses two distinct bulb sizes across its model years: the 199 for 1973 and the 1156 for 1972.
Both the 199 and 1156 are ANSI-standardized bulbs recognized in the US and Canada, each operating at 12 volts and 21 watts with a single filament.
The 199 and 1156 share the BA15s bayonet base, a single-contact base type where the bulb is inserted and rotated to lock into the socket.
The 199 is a variant of the 1156, meaning the two bulbs are closely related in design and electrical characteristics despite carrying different part designations.
Because the 199 and 1156 share the same base type and electrical ratings, the physical and functional similarity between them is a relevant consideration when sourcing a replacement for either model year.