Yal:Can you give me the part no. for the light mount.Like what JCE said the wire comes out with several other wires,what i did was find an empty wire and connect the third brake and press the brake pedal to see if the third brake will light up(the engine is running).Its like hide and seek.lol.BTW the wire is wrap with a braided black nylon,you have to find that wire.Thanks

Ron