Wondering if anyone can help me or has been through the same issues. I have a 2006 f350 6.0 my dash lights and running lights stay on all the time. I have replaced the auto light switch and the ambient light sensor. If I unplug part of the switch my running lights will turn off and operate like normal however the dash lights stay on and will kill the batterys if not cranked up frequently.any help would be much appreciated.

 

Sounds like a stuck relay somewhere. Here are the diagrams for your year.
I also put some other options and things that may be of help.