i have the same problem as the other person. everything worked then hit a bump

What is your question?

at first just the speddometer stopped now the whole dashboard does the same things. while driving fuel goes from empty to full and back and forth. speedometer goes crazy and it goes from cold to hot and when bells go ding it stops and goes back to cold. is this a wiring problem on the dash. had this to 3 mechanics and no one knows what to do.