My license plate lamps won't work.

Have you tested to see if you have power to the socket? If you have power to the socket, is there power after the socket with the bulb in? You may have a cold connection in the socket or a broken wire or bad ground. If you have no power to the socket, start working back to find a possible break in the wire. Turn your lights on, place a voltmeter on the socket wire coming into the socket and make sure you have a solid ground on the voltmeter. You should read between 10 to 12 volts DC.

Dog chewed off the wire how do I replace it