Very possible it's not. I added washers under the screws of the circuit boards on mine. Even tight, there was play between the board and cluster base. That is how they ground. Then the cluster assembly grounds to the dash via the mount screws. I added extra ground wires from the cluster assembly to the dash structure. If the cluster is removed, you can test each light circuit witha 9 volt batter with some wire and alligator clips.
