Mack RM Instrument Panel Bulb Size

The Mack RM instrument panel utilizes bulb sizes 194, 161, and 57 for illumination across various components within the dashboard assembly. Data for the specific lighting requirements covers the span from 1981 through 1993.

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

YearsBulb Size
1991-1993194
1990161
1989194
198857
1987161
1986194
1984-1985161
1983194
198257
1981194

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
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 1W.57

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