Cadillac Cimarron front side marker bulbs use 194 size, while rear side marker bulbs use either 1157 or 194 size. The replacement chart covers 1982 through 1988 vehicle production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 194 bulb follows the ANSI standard recognized in both the US and Canada. It is a miniature wedge type in the T10 form factor, rated at 12 volts and 3.78 watts.
The 1157 bulb also carries ANSI standardization for the US and Canada. It is a dual-filament bulb with a BAY15d bayonet base, rated at 12 volts with a 21W/5W filament configuration corresponding to its stop and tail functions.
The Cadillac Cimarron uses the 194 bulb across all front side marker positions for every model year covered in the specifications, spanning 1982-1988.
The rear side marker position on the Cimarron does not share a single bulb type across all years. The 1982-1984 model years use the 194, while the 1985-1986 model years use the 1157.
The shift from the 194 to the 1157 in the rear side marker between the 1984 and 1985 model years represents a change from a single-filament wedge bulb to a dual-filament bayonet-base bulb, which are not interchangeable due to differences in base type, wattage, and filament count.
The T10 wedge base of the 194 and the BAY15d bayonet base of the 1157 are physically distinct mounting systems. Substituting one for the other in a socket designed for a specific base type is not supported by these specifications.
The 1157 draws significantly more power on its primary filament at 21 watts, compared to the 3.78 watts of the 194. This difference is relevant to the electrical load expectations of the socket and wiring in each respective application.