GMC W6500 Forward Instrument Panel Bulb Size
The GMC W6500 Forward instrument panel utilizes unique bulb sizes 158, 161, 168, 194, and 1893 for various lighting components located within the main dashboard cluster. Data for the specified vehicle components covers the range from 1987 through 1996 for the listed lighting applications.
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 |
|---|---|
| 1996 | 158 (Tiltmaster) |
| 1994-1995 | 161 (Tiltmaster) |
| 1993 | 168 (Tiltmaster) |
| 1992 | 161 (Medium Duty) |
| 158 (Tiltmaster) | |
| 1991 | 194 (Medium Duty) |
| 168 (Tiltmaster) | |
| 1990 | 168 (Medium Duty) |
| 1893 (Tiltmaster) | |
| 1989 | 194 (Medium Duty) |
| 1893 (Tiltmaster) | |
| 1988 | 1893 |
| 168 (Medium Duty, With 2 Rectangular Headlights) | |
| 161 (With 2 Round Headlamps) | |
| 1987 | 168 |
| 194 | |
| 1893 (With 4 Round Headlamps) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W. | 161 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 1893 |