The Acura Legend brake light utilizes a 2057 bulb size for the specific lighting components located at the rear of the vehicle. Data for the bulb specifications covers the range from 1986 through 1988.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Acura Legend (1986-1988) uses two distinct bulb types across its brake lighting system: the 2057 for the standard brake lights and the 1156 for the Center High Mount Stop Light.
The 2057 is a dual-filament bulb operating at 12V with a wattage split of 26.9W for the high-intensity filament and 8W for the low-intensity filament, making it suitable for combined stop and tail light functions.
The 2057 follows the ANSI standard applicable in the US and Canada and uses a BAY15d bayonet base, which features two offset pins to ensure correct orientation during installation.
The 2057 is a brighter variant of the 1157, meaning the two share the same BAY15d base type but are not identical in output, and substituting one for the other may affect lighting performance.
The 1156 is a single-filament bulb rated at 12V and 21W, designed exclusively for on/off switching applications such as a dedicated stop light with no tail light function.
The 1156 uses a BA15s bayonet base, which has a single pin and is not interchangeable with the BAY15d base of the 2057, as the pin configurations differ between the two base types.
Both the 2057 and 1156 conform to ANSI standards for the US and Canadian markets, indicating standardized physical and electrical specifications within those regions.
The Center High Mount Stop Light on the Acura Legend (1986-1988) uses the single-filament 1156 rather than the dual-filament 2057, reflecting its function as a dedicated stop signal without a secondary tail light role.