When I hit a bump my instrument cluster gauges start flashing on and off including no charge light flashing. I have checked for loose wires, damaged wires loose connections. Every time I hit a bump the speedo, temp, gas gauges drop down then go back up even the P,R,N,D,1,2,3 disappear along with the milage, I have tired 2 other clusters but that didn't work. Also every time i hit a bump cruise control goes off too. What is causing this??????