Door jamb light switch.  Sold individually.

1930-56 Buick all models;

1957-58 Buick Super and Roadmaster;

1958 Buick Century 4 door sedans (model 61);

1946-55 Cadillac all models;

1956-58 Cadillac except convertibles;

1959-60 Cadillac except coupes and convertibles;

1964-64 Cadillac all 4 door and Series 75 models;

1941-52 Oldsmobile all models;

1953-56 Oldsmobile 98 4 door models, rear doors;

1957-58 Oldsmobile 98 4 door models, rear doors;

1941-56 Chevrolet car models except 1955-56 Corvette