Had to pull the cluster on my 84 380sl to replace odometer gears. When I put the cluster back in my temp guage went all the way to 250 and pegged, also my gas guage is wrong along with the oil pressure. When I turn on the turn signal all the guages go back and forth with the blinker. Also they move when I use the brakes. The only ground I could find is on top of the steering column and that checks out fine. This happened once before and all I did was reinstall the cluster after checking all the connections and it worked fine. Can anybody out there make a suggestion or help?