Mercury Marquis Courtesy Bulb Size
The Mercury Marquis courtesy light utilizes unique bulb sizes 168, 105, 161, 212-2, 89, 1003, 1893, 631, and 1816. Data for the specified lighting components covers the range from 1967 to 1986.
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 |
|---|---|
| 1986 | 168 |
| 1982 | 105 |
| 1981 | 161 |
| 1979-1980 | 212-2 |
| 1977-1978 | 89 |
| 1976 | 212-2 |
| 1974-1975 | 1003 |
| 1973 | 89 |
| 1972 | 1893 |
| 1969-1971 | 212-2 |
| 1968 | 631 |
| 1967 | 1816 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W. | 105 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W. | 161 |
| ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W. | 212-2 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 89 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1003 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 1893 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W. | 631 |
| ANSI standard (US & Canada). Miniature wedge bulb (T3.25). 12V, 4W. | 1816 |