Buick GS 400 Clock Light Bulb Size
The Buick GS 400 clock light bulb uses a 1893 size bulb for the instrument cluster timepiece. The replacement chart covers 1968 to 1969 model years with corresponding bulb specifications.
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 |
|---|---|
| 1968-1969 | 1893 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 1893 |