American Motors Matador front and rear turn signal bulbs use a 1157 size. The replacement chart covers 1971 through 1978 production 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 American Motors Matador uses the 1157 bulb for both its front and rear turn signals across the full 1971-1978 production span covered by these specifications.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, allowing it to serve more than one lighting function simultaneously.
The 1157 operates on a 12-volt electrical system and draws 21 watts on its high-intensity filament and 5 watts on its low-intensity filament.
The 1157 uses a BAY15d bayonet base, which is an offset twin-pin mount. The two pins are positioned at different heights, which prevents the bulb from being seated incorrectly in the socket.
The 1157 conforms to ANSI standards and is recognized in both the United States and Canada, reflecting a standardized specification shared across North American automotive applications.
Because the same 1157 bulb is specified for both the front and rear turn signal positions on the Matador, a single bulb type serves both locations without substitution or variation between them.