GMC P4500 Instrument Panel Bulb Size
The GMC P4500 instrument panel utilizes unique bulb sizes 161, 168, 194, and 1893 for the internal illumination components. Data for the specified lighting hardware covers the range from 1979 to 1990.
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
If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 1989-1990 | 161 (Medium Duty) | 161 | Check Price |
| 1987-1988 | 194 | W5W | Check Price |
| 1986 | 168 (Medium Duty) | W5W | Check Price |
| 194 (Medium Duty, With 2 Rectangular Headlights) | W5W | Check Price | |
| 1984-1985 | 194 | W5W | Check Price |
| 1983 | 161 (Medium Duty) | 161 | Check Price |
| 194 (Medium Duty, With 2 Rectangular Headlights) | W5W | Check Price | |
| 1982 | 194 (Medium Duty) | W5W | Check Price |
| 161 (Medium Duty, With 2 Rectangular Headlights) | 161 | Check Price | |
| 1981 | 194 | W5W | Check Price |
| 1980 | 161 | 161 | Check Price |
| 1979 | 1893 (Medium Duty) | 1893 | Check Price |
| 194 (Medium Duty, With 2 Rectangular Headlights) | W5W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W. | 161 | Check Price |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with W2.1x9.5d wedge base. 12V, 5W. | W5W | Check Price |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 | Check Price |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 1893 | Check Price |