Buick Skylark License Plate Bulb Size

Additional Notes

• The license plate bulb for the Buick Skylark follows ANSI standards applicable to both the United States and Canada across all listed model years.
• The 194 bulb is the most widely used type across the Skylark's listed model years, covering 1975-1980 and 1981-1998 with the sole exception of 1978. It is a T10 miniature wedge bulb rated at 12V and 3.78W, making it among the lowest-wattage types found in these specifications.
• The 97 bulb is the second most frequently listed type, specified for the Buick Skylark from 1966-1972 and again for 1978. It uses a BA15s bayonet base, operates at 12V, and draws 13W, classifying it as a variant of the 1156 bulb family.
• The 67 bulb is specified for 1954 and 1961-1963. It also uses a BA15s bayonet base at 12V but is rated at 8W, representing the lower-wattage end of the 1156 variant family present in these specifications.
• The 1155 bulb is specified exclusively for the 1964 model year. It shares the BA15s bayonet base with the 97 and 67 types but operates at a higher 21W output, making it the highest-wattage bulb listed across all Skylark license plate specifications.
• The 97, 1155, and 67 bulbs all share the BA15s bayonet base but differ in wattage. Despite this shared base type, they are distinct ANSI-designated variants and are not interchangeable without accounting for wattage differences, which affect brightness and electrical load.
• The 194 wedge base and the BA15s bayonet base are physically incompatible mounting types. A 194 bulb cannot be fitted into a socket designed for the 97, 1155, or 67, and vice versa.
• The 1978 model year is the only year within the 1975-1998 span that departs from the 194 specification, using the 97 bulb instead. This makes the 1978 Skylark a fitment exception within that otherwise uniform range.