Mercury Monterey Engine Compartment Light Bulb Size
The Mercury Monterey engine compartment light uses bulb sizes 89, 631, P21W, and 93 depending on the specific application. Data for the listed components covers the range from 1956 to 1974.
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 |
|---|---|
| 1973-1974 | 89 |
| 1968-1970 | 631 |
| 1962-1967 | P21W |
| 1960 | 93 |
| 1958-1959 | P21W |
| 1956-1957 | 93 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| 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. Variant of 1156. 12V, 21W. | 631 |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 93 |