trailer wiring
I'll try to keep this brief. I have a 2001 28foot travel trailer. while putting 600 miles on it this last week I found out my trailer park lamps were not working. The brake lights work, turn signals w...
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SweetLou wrote:drsteve wrote:wnjj wrote:
It can't be the ground wire. The brake lights work but several tail/marker lights don't. That's a problem with the hot wire.
It can always be the ground. Never say never.
That's correct! I had his exact same problem in my little utility trailer and it was a bad ground at the socket.
A bad ground at the socket of a tail/brake light could allow the brake light to work fine because it grounds through the tail light filament then back through the other tail light and marker lights to ground (lighting both filaments in the bulb with the missing ground) BUT only if the tail lights are turned off. Turn them on and there is no ground path anymore and the brake light quits.
While bad grounds may seem like it, they aren't voodoo. The symptoms match the failure. Unless the OP hasn't properly described how his is failing, it cannot be a ground problem. Now if his brake lights aren't actually working all the time, it could be.
