Recently my main headlights will not turn on and my brake pedal turns on my running light in my headlights only on one side. The fuses are fine and I recently had my main wire harness and my ECU replaced. According to the dealer those replacements have nothing to do with the issues. I am having a hard time believing that seeing that the brake wiring and headlight wiring should be circuited together. Has anyone had an issue like this? Am I getting screwed? If you could help thanks.

 

Did it ever work fine after the new harness was installed?

 

I have seen strange problems when a ground connection comes loose. The ones that are screwed to the body and often have more than one wire.

Pull the fuse for the brake light and see what changes.

 

I know of a case back in 2004 when Chrysler couldn't fix a problem like that. They got a MB rep to look at it after replacing many parts. He said change the headlight switch. That fixed the problem....

 

This guy had troubles with his lights a year ago and said he would report back when he had tried the suggestions, I guess he's been busy.