GMC R3500 Instrument Panel Bulb Size
The GMC R3500 instrument panel utilizes 194 and 161 bulb sizes for the internal lighting components across the various configurations provided in the data. The information covers a specific range from 1987 through 1991.
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 |
|---|---|
| 1990-1991 | 194 |
| 1988-1989 | 161 |
| 1987 | 194 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W. | 161 |