I have had a short in my brake lights. I replaced pedel switch twice. Was convinced that the last time i fixed it. Randomly the brake lights stay on and and wires get burning hot and melt the wiees to switch on pedal. I found a brake light buld last time with a short between the two prongs. But bulb still worked. Replaced switch and bulb. 3 months later problem all over again. Have chased ground and everything checkes out. But i must have missed something. Any advice would be great.