Mack CL Courtesy Bulb Size
The Mack CL courtesy light utilizes 912 and 1003 bulb sizes according to the provided specifications for the vehicle. Data for the lighting components covers the period from 1991 through 1997.
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 |
|---|---|
| 1996-1997 | 912 |
| 1992-1995 | 1003 |
| 1991 | 912 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W. | 912 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1003 |