The Mercury Villager brake light uses 3157, 2458, 2057, 1157, and 1034 bulb sizes depending on the specific production period. Available information covers a span from 1962 through 2002.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercury Villager brake light specifications cover three distinct bulb types across the main brake light position: the 1157, 2057, and 3157. All three follow ANSI standards applicable in the US and Canada.
The 1157 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a 21W high filament and 5W low filament. It is the most frequently specified bulb in the Mercury Villager brake light data, appearing across the 1993-1994 model years as well as the 1963-1967 range.
The 2057 shares the same BAY15d bayonet base as the 1157 but operates at 26.9W on its high filament and 8W on its low filament, making it a higher-output variant. The Mercury Villager used the 2057 for the 1997-1998 model years.
The 3157 is a dual-filament wedge-type bulb in a T25 form factor, rated at 12V with 27W and 7W filaments. The Mercury Villager (1999-2002) used this bulb for the main brake light position.
Because the 1157, 2057, and 3157 share a dual-filament design but differ in base type and wattage, they are not directly interchangeable despite serving the same brake light function across different model years.
The 1034 is a dual-filament BAY15d bayonet-base bulb rated at 12V, 21W/5W, and is listed as a variant of the 1157. It appears only in the 1962 model year entry for the Mercury Villager brake light.
The center high mount stop light (CHMSL) on the Mercury Villager used the 912 bulb without variation across all listed model years, spanning 1993-2002.
The 912 is a single-filament wedge bulb in a T15 form factor, rated at 12V and 12W. It is classified as a variant of the 921 bulb under ANSI standards.
The 912 wedge base used in the CHMSL is physically incompatible with the BAY15d bayonet base used in the main brake light positions, meaning the two positions require entirely different bulb types regardless of model year.
The shift from the 1157 to the 2057 between the 1994 and 1997 model years, and then to the 3157 from 1999 onward, reflects changes in the main brake light socket design, as the BAY15d and T25 wedge bases are not interchangeable.