Mack CF Courtesy Bulb Size
The Mack CF courtesy light utilizes 1003 and 912 bulb sizes for the interior lighting system within the specified vehicle lighting data. Information provided covers the time range from 1981 through 1991 for the various components listed.
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 |
|---|---|
| 1990-1991 | 1003 |
| 1989 | 912 |
| 1987-1988 | 1003 |
| 1985-1986 | 912 |
| 1983-1984 | 1003 |
| 1982 | 912 |
| 1981 | 1003 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1003 |
| ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W. | 912 |