Buick Somerset Courtesy Bulb Size
The Buick Somerset courtesy light requires a 906 bulb size for the interior lighting system. Data for the specific bulb requirements covers the range from 1986 to 1987.
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 |
|---|---|
| 1986-1987 | 906 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W. | 906 |