Mercury Marauder Back Up Light Bulb Size

The Mercury Marauder back up light utilizes bulb sizes 2456, 2356, P21W, 1156, and 1141 depending on the specific production version. Available information covers a total span from 1963 through 2004.

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
2004	2456
2003	2356
1968-1970	1156
1963-1967	1141

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, specialty application. 12V.	2456
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V.	2356
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1141

Other Locations

Additional Notes

The Mercury Marauder backup light specifications span two distinct production eras: a classic generation from 1963-1970 and a modern revival represented by the 2003 and 2004 model years.
The 1141 bulb is the most frequently specified backup light across the Marauder lineup, appearing in five consecutive model years from 1963-1967. It is a single-filament bulb rated at 12V and 21W, fitted with a BA15s bayonet base, and meets ANSI standards for the US and Canadian markets.
The 1156 bulb shares the same BA15s bayonet base, 12V operating voltage, and 21W power rating as the 1141. Both are single-filament designs, which means the physical base type is identical between the two, though they are distinct ANSI part numbers and are not confirmed as interchangeable within these specifications.
The 1156 bulb is specified for the Mercury Marauder across the 1968-1970 model years, representing a shift from the 1141 used in the earlier generation.
The 2356 is specified for the 2003 Marauder. It is a dual-filament bulb with a BAY15d bayonet base, operating at 12V. The BAY15d base differs from the BA15s base used by the 1141 and 1156, making it physically incompatible with those earlier fitments.
The 2456 is specified for the 2004 Mercury Marauder. It is a festoon-style bulb rated at 12V, intended for specialty applications, and represents a different bulb format entirely from the bayonet-base types used in all other Marauder model years listed.
All four bulb types in these specifications conform to ANSI standards recognized in both the United States and Canada.
The transition from a bayonet-base bulb in 2003 to a festoon bulb in 2004 indicates a change in the backup light housing design between those two model years of the modern Marauder.