When a light goes out somewhere on your car, the problem is not always a burned-out bulb—sometimes the old wiring or socket is faulty. American Autowire single contact light bulb sockets are typically designed to snap into various size openings; then just splice the wires into a good power source. Some sizes are plastic, and others (which need to be grounded) are steel. There are even models specifically for taillights. It's automotive repair made easy—fix your lights before the flashing lights pull you over.