Оригинальный сообщение: Towerjack LaRouix ,
If your brake lights and turn signals are not working but the third brake light is working I would go with Nope's answer and check the wiring for a broken/bad wire. I was going to say check the brake switch but since the third light is working there is nothing wrong with the switch. I will stick with a broken wire more than likely under the bed at the very back. This is where I have always found the wires to be broken.