1995 Dodge Caravan Dash Gauges Inoperable

I have a 1995 Dodge Caravan and for some time now my dash gauges would simply stop working. The Dome lights won't work when opening the doors , the dimmer switch is inoperable and the seat belt warning light stays on briefly after turning the vehicle off while hearing a fluttering noise like that of a relay. I also noticed that the speedometer doesn't work . I can return to the vehicle the following day and everything functions normally.Recently I drove down a very rough road and the gauges and lights have stopped working permanently. Several times while exiting the vehicle I have been shocked shutting the doors.I have checked the fuses under the DS dash as well as under the hood but all seem to be OK. What's Next