Plymouth PB150 License Plate Bulb Size

The Plymouth PB150 license plate light uses 168 and 1155 bulb sizes for the lighting components. Data for the specified vehicle covers the range from 1981 to 1983.

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
1982-1983	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 Plymouth PB150 license plate bulb specifications cover model years 1981-1983, with two distinct bulb types used across this range.
The 168 bulb is the more frequently specified type, appearing in the 1982-1983 Plymouth PB150 license plate position.
The 168 is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 4.9W, and is recognized in both the US and Canada.
The 1981 Plymouth PB150 uses the 1155 bulb, which operates at a significantly higher wattage of 21W compared to the 4.9W rating of the 168.
The 1155 is an ANSI-standard single-filament bulb with a BA15s bayonet base, recognized in both the US and Canada.
The BA15s bayonet base of the 1155 and the T10 wedge base of the 168 are physically incompatible, meaning the two bulb types are not interchangeable across model years.
The 1155 is a variant of the 1156 bulb. Despite their close relationship, substitution between these two types warrants attention to wattage and fitment tolerances for the specific application.
The shift from the 1155 in 1981 to the 168 in 1982 represents a change in both base type and wattage for the license plate position on this vehicle.