Mercury Marquis Automatic Transmission Indicator Bulb Size
The Mercury Marquis automatic transmission indicator utilizes bulb sizes 194, 1445, and 158 for the internal illumination components. Data for the specified lighting covers the range from 1967 through 1985.
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 |
|---|---|
| 1983-1985 | 194 |
| 1978 | 194 |
| 1977 | 1445 |
| 1974 | 1445 |
| 1969-1972 | 1445 |
| 1967-1968 | 158 |
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, 2W. | 1445 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |