Buick Somerset Trunk Bulb Size
The Buick Somerset trunk light requires a unique 1003 bulb size for proper illumination. Data for the specified lighting component 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 | 1003 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1003 |