Buick Special Courtesy Bulb Size
The Buick Special courtesy light uses bulb sizes 68, 89, and 90 depending on the specific application. Data for the bulb sizes covers the range from 1961 to 1969.
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 |
|---|---|
| 1967-1969 | 89 |
| 1965-1966 | 90 |
| 1963-1964 | 89 |
| 1962 | 90 |
| 1961 | 68 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 89 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 13W. | 90 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 6W. | 68 |