The Mercury Lynx brake components utilize 1157 and 2357 bulb sizes for the lighting systems across various production versions. Data for the specific bulb requirements covers the range from 1981 through 1987.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercury Lynx brake light specifications cover model years 1981-1987, with the 1157 bulb used from 1981-1985 and the 2357 bulb used in 1986-1987.
Both the 1157 and 2357 are dual-filament bulbs sharing the BAY15d bayonet base, which means the socket type is physically identical across all seven model years in the brake light application.
The BAY15d bayonet base features two offset pins that prevent incorrect insertion, a design standard for dual-filament automotive brake and tail light applications.
The 2357 operates at 26.9W on its high-intensity filament, compared to 21W for the 1157, making the 2357 the higher-output bulb despite the shared base type.
Both the 1157 and 2357 operate on a 12V system and carry ANSI standardization for the US and Canadian markets.
Although the 1157 and 2357 share the same BAY15d base, their wattage ratings differ, and substituting one for the other may affect brake light brightness relative to the original factory specification.
The Mercury Lynx (1986-1987) includes a Center High Mount Stop Light position, which uses the 921 bulb, a single-filament wedge-type bulb of the T15 form factor.
The 921 wedge bulb uses a wedge base rather than a bayonet fitting, making it physically incompatible with the BAY15d sockets used in the standard brake light positions.
The 921 is rated at 16W on a 12V system and carries ANSI standardization for the US and Canadian markets.