Chevrolet Brookwood License Plate Bulb Size

The Chevrolet Brookwood license plate light requires bulb size 67 or 97 depending on the specific application. Available data for the bulb specifications covers the period 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
1969-1971	67
1958-1961	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

Other Locations

Additional Notes

The bulb type 67 appears across the majority of the Chevrolet Brookwood model years covered in these specifications, serving as the license plate bulb for 1958-1961 and 1969-1971.
The 1972 Brookwood is the sole model year specified with a type 97 bulb for the license plate position, distinguishing it from all other listed years.
Both the 97 and 67 bulbs are ANSI-standardized components recognized in the United States and Canada, and both use a BA15s single-contact bayonet base.
The BA15s base is a single-contact bayonet fitting, meaning it locks into the socket with a quarter-turn and carries current through one contact point at the base, which corresponds to the single-filament construction of both bulb types.
Both bulb types operate at 12 volts, consistent with the 12-volt electrical systems standard in automotive applications of this era.
The type 67 is rated at 8 watts, while the type 97 is rated at 13 watts. Both are described as lower-wattage variants of the 1156 bulb, with the 97 drawing notably more power than the 67 despite sharing the same base and voltage rating.
Because the 97 and 67 share the same BA15s bayonet base and voltage rating, physical installation is mechanically compatible between them, but the wattage difference means they are not electrically interchangeable without consideration of the circuit's design tolerances.