The other night i was driving along in my 91 ranger when suddenly all my interior dash lighst quit working, I also noticed my running lights quit too. i figured it was a fuse so i checked them all and replaced the one that was blown. still no dash lights or running lights. I can get the running lights to come on if i wigle the switch a certain way, but no dash lights. All my turn signals and brake lights work fine and all my bulbs are good. i tried putting a larger fuse in just to see if it would work. It did but i had to turn the dome light on for the dash lights to come on and even still they just flickered and so did everything else. Does anyone have a clue as to what this could be?