Buick Estate Wagon License Plate Bulb Size

The Buick Estate Wagon license plate light uses 194, 168, 97, 1155, and 67 bulb sizes. Available data for the lighting components covers the period from 1959 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	194
1982	168
1978-1981	194
1977	168
1972-1976	194
1970-1971	97
1964	1155
1959-1963	67

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
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
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67

Other Locations

Additional Notes

The 194 is the most frequently specified license plate bulb across the Buick Estate Wagon range, appearing in the 1972-1976, 1978-1981, and 1983 model years.
The 194 is a T10 miniature wedge bulb rated at 12V and 3.78W, conforming to ANSI standards for the US and Canadian markets.
The 168 bulb also follows the T10 miniature wedge form factor but draws more power at 4.9W, making it physically interchangeable with the 194 in terms of socket type while differing in wattage output.
The Buick Estate Wagon (1982) and (1977) both use the 168 bulb rather than the 194 that surrounds those years in the specification record.
The 97 bulb, specified for the 1970-1971 model years, uses a BA15s bayonet base and is rated at 12V and 13W, representing a significantly higher wattage than the wedge-base bulbs used in later years.
The 97 is classified as a variant of the 1156 bulb family, sharing the BA15s bayonet base but differing in wattage, which means it is not interchangeable with 1156 where wattage tolerance is a factor.
The Buick Estate Wagon (1964) uses the 1155 bulb, rated at 21W with a BA15s bayonet base, making it the highest-wattage license plate bulb in the entire specification record.
The 67 bulb, specified for the 1959-1963 model years, shares the BA15s bayonet base with the 97 and 1155 but operates at a lower 8W, and is also described as a lower wattage variant of the 1156 family.
Because the 67, 97, and 1155 all share the BA15s bayonet base, physical fitment across those socket types is possible, but their wattage ratings of 8W, 13W, and 21W respectively differ enough to make substitution inadvisable without confirming fixture compatibility.
All five bulb types across the full specification range conform to ANSI standards applicable to both the US and Canadian markets.