gauge cluster is not functioning correctly can that affect me losing power

What is your question?

My gauge cluster turns off and on by itself. Sometimes I have no power in my power windows radio sunroof. And then all of a sudden they'll turn on as I'm driving down the road.then if I hit a bump they will turn off and won't come back on. If I slap the top of my dashboard every once in a while I get power back to all those items.is this just a gauge cluster problem or is it faulty wiring problem