First, my apologies if this has been asked already 100 times.

I have an '02 Dodge Ram 1500 4x4 4.7L that started dying on me in December when I would ride over big bumps or on gravel roads, especially over the washboard. I was in North Carolina at the time and now I'm back home in CT. No gravel roads around here so it was only doing it on big bumps in the road. Now it won't start at all. It turns overs fine, I get all the idiot lights, inside lights, radio, headlights but no gauges power up when I try to crank the engine. Any ideas would be greatly appreciated!

Thanks!