Can you buy the circuit board thing(don't know what to call it) that bolts to the back of the cluster? I replaced my cluster with one that has a tach, all of the guages work great but only 3 bulbs work, and I replaced them with all new bulbs and cleaned all connections and still only 3 bulbs work, high beam, bottom left speedo bulb and the left turn signal. One of the other speedo bulbs will go on and off when I wiggle it but that's it.