last night my headlight high beams would only work temporarily when I pulled on the dimmer switch. It didn't seem to want to "click" like it normally did to change the lights into high. I suspect it is the multifunction turn signal/headlight switch. Do you agree and if so does anyone know how to change the multifunction switch out on a 2008 dodge 2500 with 6.7 cummins?

 

There is a recall for the MFS. Call your local dealer and run your vin. Your truck info would help.

Some folks pull off their mfs, clean out the contacts and put it back to have it work just fine.