Chevrolet Biscayne License Plate Bulb Size

The Chevrolet Biscayne license plate light uses bulb sizes 97 and 67 and 1155 for illumination. Data for the lighting components covers the range from 1958 through 1972.

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
1972	97
1968-1971	67
1966-1967	1155
1958-1965	67

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	97
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	1155

Other Locations

Additional Notes

The license plate bulb specifications for the Chevrolet Biscayne span the 1958-1972 model years, with three distinct bulb types used across that period: the 67, the 97, and the 1155.
The bulb 67 is the most frequently specified type, covering the 1958-1965 and 1968-1971 model years. It is an ANSI-standard single-filament bulb with a BA15s bayonet base, rated at 12V and 8W, making it the lowest-wattage of the three types used.
The bulb 1155 is specified for the 1966-1967 model years. Like the 67, it is an ANSI-standard single-filament bulb with a BA15s bayonet base and a 12V rating, but it operates at a significantly higher 21W output.
The bulb 97 is specified exclusively for the 1972 model year. It is an ANSI-standard single-filament bulb with a BA15s bayonet base, rated at 12V and 13W, placing its wattage between the 67 and the 1155.
All three bulb types share the BA15s bayonet base and are described as variants of the 1156, which means the socket interface is consistent across all Biscayne model years in these specifications, though the wattage ratings differ.
Despite sharing the same base type, the 67, 97, and 1155 are not interchangeable without consideration of wattage. The 1155 draws more than twice the power of the 67, and substituting one for another could affect socket and wiring compatibility.
The shift from the 1155 in 1966-1967 back to the lower-wattage 67 for 1968-1971 represents a notable change in the specified power draw for the license plate circuit, with the 1972 model year then transitioning to the mid-range 97.