Plymouth Scamp License Plate Bulb Size

The Plymouth Scamp license plate light requires bulb size 168 or 67 depending on the specific vehicle configuration. Data for the bulb requirements covers the range from 1971 through 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
1983	168
1973-1976	168
1971-1972	67

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. Lower wattage variant of 1156. 12V, 8W.	67

Other Locations

Additional Notes

The Plymouth Scamp license plate bulb specifications cover model years 1971-1976 and 1983, with two distinct bulb types used across those years.
The 168 bulb is the more frequently specified type, appearing in five of the seven model years listed, from 1973-1976 and 1983.
The 168 is a T10 miniature wedge bulb rated at 12V and 4.9W, conforming to ANSI standards for the US and Canadian markets.
The T10 wedge base design means the 168 bulb connects by friction fit rather than by a bayonet or screw mechanism, with the base itself forming the electrical contact.
The 67 bulb is specified for the Plymouth Scamp in 1971-1972, representing the earlier fitment before the transition to the 168.
The 67 uses a BA15s single-contact bayonet base, a base type that requires alignment and a quarter-turn to lock into the socket.
At 12V and 8W, the 67 draws notably more power than the 168, which operates at 4.9W under the same voltage.
The 67 is described as a lower wattage variant of the 1156 bulb, sharing the same BA15s bayonet base but differing in wattage output.
Because the 168 and 67 use physically incompatible base types, a wedge socket and a bayonet socket respectively, the two bulbs are not interchangeable without socket modification.