The Cadillac Eldorado brake light utilizes 1034, 1157, 2057, and 3057 bulb sizes depending on the specific production period for the vehicle. Provided information covers the range from 1953 through 2002 for the specified automotive lighting components.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Cadillac Eldorado brake light specifications cover three distinct bulb types across the main brake position: the 1034, the 1157, and the 2057, with a brief appearance of the 3057 in 1990-1991.
The 2057 is the most widely specified brake bulb across the Eldorado range, covering 1983-1989 and 1992-2002. It is a dual-filament bulb with a BAY15d bayonet base rated at 12V and 26.9W/8W, making it the higher-output variant of the 1157.
The 1157, which shares the same BAY15d bayonet base as the 2057, was the specified fitment from 1964-1982. At 12V and 21W/5W, its filaments draw less wattage than those of the 2057, meaning the two bulbs are physically interchangeable at the base but are not electrically identical.
The 1034 was specified for the Cadillac Eldorado from 1953-1963. It is also a dual-filament BAY15d bulb rated at 12V and 21W/5W, placing it in the same electrical class as the 1157, though the two carry different ANSI designations.
The 3057 appeared exclusively in 1990-1991. Unlike the other brake bulbs in these specifications, it uses a wedge-type T25 base rather than a BAY15d bayonet base, which means it is not physically interchangeable with the 2057 used in the surrounding model years despite similar wattage ratings.
The Center High Mount Stop Light (CHMSL) position uses single-filament bulbs throughout its listed range of 1986-2002, in contrast to the dual-filament bulbs specified for the main brake position.
The 1156 is the predominant CHMSL bulb, covering 1986-1994 and 1996-2002. It uses a BA15s bayonet base and is rated at 12V and 21W.
The 1141 was specified for the CHMSL in 1995 only. It shares the BA15s bayonet base and 12V/21W rating of the 1156, making the two electrically and physically similar, though they carry separate ANSI designations.
Because the main brake position uses dual-filament bulbs throughout the entire listed range, those sockets serve a combined stop and tail light function, with each filament handling a separate circuit at different wattage levels.
All bulb types across both positions conform to ANSI standards applicable in the United States and Canada, and all operate on a 12V electrical system.