Mack U Instrument Panel Bulb Size
The Mack U instrument panel utilizes bulb sizes 194, 57, and 161 for illumination across various production versions. Available information covers the specific time span from 1981 through 1989.
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 |
|---|---|
| 1984-1989 | 194 |
| 1983 | 57 |
| 1982 | 161 |
| 1981 | 194 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 1W. | 57 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W. | 161 |