Oldsmobile Jetstar 88 License Plate Bulb Size

The Oldsmobile Jetstar 88 license plate light requires bulb size 97 or bulb size 1155 depending on the specific version of the component. Data for the bulb sizes covers the range from 1964 to 1966.

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
1965-1966	97
1964	1155

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. Variant of 1156. 12V, 21W.	1155

Other Locations

Additional Notes

The Oldsmobile Jetstar 88 uses two distinct bulb sizes across its 1964-1966 model years for the license plate position: the 97 and the 1155.
Both the 97 and the 1155 are ANSI-standardized bulb types recognized in the United States and Canada, and both share the BA15s single-contact bayonet base.
The BA15s base is a single-contact bayonet fitting, meaning the bulb seats and locks with a push-and-twist motion against one electrical contact at the base tip.
Both bulb types are single-filament designs operating at 12 volts, consistent with the 12-volt electrical systems standard in passenger vehicles of this era.
The 97 and the 1155 are each classified as variants of the 1156 bulb family, indicating a shared base type and general form factor within that lineage.
Despite their shared base and voltage rating, the 97 and the 1155 differ in wattage: the 97 is rated at 13W, while the 1155 is rated at 21W, representing a notable difference in power draw.
The 1965-1966 Jetstar 88 specifies the 97 bulb for the license plate position, while the 1964 model specifies the higher-wattage 1155.
Because the 97 and 1155 share the BA15s bayonet base, they are physically interchangeable in the socket, but their wattage difference means they are not electrically equivalent substitutes for one another.