I have a 2000 Ford 53 series chassis that is blowing the brake light fuse. This is the third or fourth time I am having this problem. The first time, I thought the 4 wire tow connector had a problem and after working on it the problem, it went away for a few weeks.
Since then the problem has returned several times, each time the problem goes away after moving the towing cable harness around as well as the cable at the brake pedal switch. I can travel for a few days without problem, but after the coach sits without moving for a few days it returns.
Now I am getting ready to travel tomorrow so decided to check the lights and have the problem again. I have removed the tow connector, cut the wires and insulated them, disconnected the two coach connectors for the chassis lights at the rear of the coach, and the fuse blows immediately when the brake pedal is touched. I cannot think of anything else to disconnect.
I am beginning to wonder if it is possible for the switch on the brake pedal to short internally to cause the problem.
Any help is greatly appreciated.