Plymouth PB300 License Plate Bulb Size

The Plymouth PB300 license plate light uses 1155 and 97 bulb sizes for the exterior illumination of the rear vehicle identification tag. Data for the specific lighting components covers the period from 1975 through 1980.

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
1980	1155
1975-1979	97

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	1155
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	97

Other Locations

Additional Notes

The bulb 97 is the license plate bulb for the Plymouth PB300 across the 1975-1979 model years, while the 1980 model year uses the 1155 bulb instead.
Both the 97 and 1155 are ANSI-standardized bulbs recognized in the United States and Canada, each operating on a 12-volt electrical system.
The 97 and 1155 share the same BA15s bayonet base, a single-contact base type that uses a pin offset to allow only one insertion orientation.
Both bulbs are single-filament designs, meaning each serves one lighting function rather than switching between two brightness levels.
The 1155 operates at 21 watts, while the 97 operates at 13 watts, making the 1155 a notably higher-output bulb despite sharing the same base type as the 97.
Both the 97 and 1155 are classified as variants of the 1156 bulb, a widely used automotive bulb family defined by the BA15s base and single-filament construction.
The shared BA15s base between the 97 and 1155 does not make them interchangeable without consideration, as the wattage difference means the 1155 draws significantly more current than the 97.