Chrysler Conquest front turn signal bulbs use 1156 size while rear turn signal bulbs use 1157 size. The replacement chart covers 1987 to 1989 model years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Chrysler Conquest uses the 1156 bulb for the front turn signal across the 1987-1989 model years.
The 1156 is a single-filament bulb rated at 12V and 21W, built to ANSI standards for the US and Canadian markets.
Its base type is the BA15s bayonet, which features a single contact pin offset to one side, allowing only one filament circuit.
The rear turn signal on the Chrysler Conquest uses the 1157 bulb across the same 1987-1989 model years.
The 1157 is a dual-filament bulb rated at 12V with two wattage levels: 21W for the turn signal filament and 5W for the secondary filament, also built to ANSI standards.
Its base type is the BAY15d bayonet, which features two offset contact pins at different heights, allowing the socket to distinguish between the two filaments.
Because the 1156 and 1157 share a similar physical profile but differ in base pin configuration, the two bulbs are not interchangeable despite their visual resemblance.
The dual-filament design of the 1157 makes it suitable for rear positions where a single housing serves more than one lighting function alongside the turn signal.