Tail Light Switch problems of the 1997 Dodge Ram 3500

I own a 1997 Dodge Ram 3500 and the headlights go out on it after half an hour or less of headlight use and sometimes it blows a fuse and no tail lights are on and I have to pull over and change the fuse so I can continue my course. I sometimes have to pull down on the headlight switch to get lights to stay on. Another thing is that the dashboard is cracked and the plastic is falling apart and this needs to get corrected before some accident happens to all Dodge owners who might not have the knowledge of this problem.