I have a 1999 F350 I just purchased from a family member and when i open the doors or use the spin on the dash i cant get the dome lights to come on nor the information center that is in the headliner i checked all fuses all good does anyone have any clue as to what it is I can't figure it out PLEASE HELP!!thanks

 

There is a relay that controls the dome light etc, it's under the dash by your left knee behind the panel, it's the smaller relay! Top left corner. I just had to change mine. Hope that helps