When I turn my headlights on, my dashboard and some of the lights in the center console do not come on. The first time this happen which was about four months ago. I went to the rear truck and pulled up the truck cover over the battery/spare tire and tapped the fused box. Looked inside and all my lights on the dash were back on, and the center console as well. Nextday driving to work hit a bump and they all went back off again. They have been that way sinces. I tried shaking and tapping the fuse box nothing. I have been trying to figure this problem for a while now. So before I take it to the shop, I was just wondering if anyone had some good suggestions to this problem?