trailer lights

[stevesparts]

Im with waterloo on this on.. had the same thing with one of my KW's it would have all sorts of trl. light problems,drove me nut's till i went through and ran grounding line on every thing. was pulling tanker then and would park at a place to unload and nothing would work on the trl at all. but try grounding the fifth wheel to see if that fix's the problem.