Buick Apollo Trunk Bulb Size
The Buick Apollo trunk light requires a 1003 bulb size for some applications and an 89 bulb size for others. Data for the specific lighting components covers the range from 1973 to 1975.
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 |
|---|---|
| 1974-1975 | 1003 |
| 1973 | 89 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1003 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 89 |