The American Motors Eagle brake light utilizes 2057 and 1157 bulb sizes for the lighting components. Data for the specific bulb sizes covers the range from 1980 through 1988.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The American Motors Eagle uses two dual-filament bulb types across its brake light specifications: the 2057 and the 1157. Both conform to ANSI standards applicable in the US and Canada and share the BAY15d bayonet base.
The BAY15d base is a double-contact bayonet fitting, which physically accommodates two filaments within a single bulb. This design allows one filament to serve as a running light and the other as a brighter stop light signal.
The 2057 bulb operates at 12V with a wattage rating of 26.9W on its high-intensity filament and 8W on its low-intensity filament. The 1157 operates at 12V with ratings of 21W and 5W respectively, making the 2057 the higher-output variant of the two.
The American Motors Eagle (1983-1988) uses the 2057 bulb for its brake lights, while the 1980-1981 model years use the 1157. Although both bulbs share the BAY15d base, they are not interchangeable without accounting for the difference in filament wattage output.
The center high mount stop light, present on the 1986-1988 Eagle, uses the 1156 bulb. Unlike the 2057 and 1157, the 1156 is a single-filament bulb rated at 12V and 21W, dedicated solely to stop light function.
The 1156 uses a BA15s bayonet base, which is a single-contact fitting. This base is physically distinct from the BAY15d base used by the 2057 and 1157, meaning the bulbs are not cross-compatible with each other's sockets.