American Motors Gremlin License Plate Bulb Size

The American Motors Gremlin license plate light requires 194 and 67 bulb sizes for the rear exterior illumination. Data for the specific lighting components covers the 1970 to 1978 range.

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
1977-1978	194
1974	194
1970	67

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67

Other Locations

Additional Notes

The American Motors Gremlin uses two distinct bulb types across its model years for the license plate position: the 194 and the 67.
The 194 is an ANSI-standard miniature wedge bulb of the T10 form factor, rated at 12V and 3.78W, and is used in the 1974 and 1977-1978 Gremlin.
The T10 wedge base of the 194 requires no locking mechanism, as the bulb is held in place by the tension of the socket itself.
The 67 is an ANSI-standard single-filament bulb with a BA15s bayonet base, rated at 12V and 8W, and is used in the 1970 Gremlin.
A BA15s bayonet base uses a single locating pin, which orients the bulb in one position within its socket, distinguishing it from dual-pin bayonet variants.
The 67 is described as a lower wattage variant of the 1156, meaning the two bulbs share a physical form factor but differ in power draw, and they are not interchangeable without consideration of the electrical load difference.
The 194 at 3.78W draws significantly less power than the 67 at 8W, reflecting a fundamental difference in socket and circuit design between the 1970 model and the 1974 and 1977-1978 models.
Both bulb types conform to ANSI standards applicable in the United States and Canada, indicating standardized sizing and base configurations across those markets.
Because the 194 and the 67 use entirely different base types, a wedge versus a bayonet, substitution between the two is physically incompatible without a socket adapter.