Dodge B250 License Plate Bulb Size

The Dodge B250 license plate light requires 168 and 1155 bulb sizes for the rear exterior illumination system. Available data for the specified vehicle covers the period from 1981 through 1994.

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
1982-1994	168
1981	1155

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	1155

Other Locations

Additional Notes

The Dodge B250 license plate position uses the 168 bulb across the 1982-1994 model years, with the sole exception of the 1981 model year, which uses the 1155 bulb instead.
The 168 bulb is an ANSI-standardized miniature wedge type in a T10 form factor, rated at 12 volts and 4.9 watts.
The T10 wedge base of the 168 bulb relies on the tension of its wire leads rather than a locking mechanism to secure it in the socket, which is a defining characteristic of the wedge base design.
The 1155 bulb, fitted to the 1981 Dodge B250, is an ANSI-standardized single-filament bulb rated at 12 volts and 21 watts, considerably higher wattage than the 168 used in later model years.
The 1155 uses a BA15s bayonet base, a single-contact bayonet mount that is physically incompatible with the wedge socket used by the 168 bulb, meaning the two types are not interchangeable.
The 1155 is classified as a variant of the 1156 bulb. While both share the BA15s bayonet base, differences in wattage or filament specification between variants mean substitution should be confirmed against the original rating before use.
The significant wattage difference between the 1155 (21W) and the 168 (4.9W) reflects a change in the electrical load placed on the license plate circuit between the 1981 model year and subsequent years of the Dodge B250.