Cluster problem

I have a problem with my lights in the cluster not working, the lights in the shifter (column shifted) and the light in the radio works, but the cluster lights dont work and the problem is that the brake and oil light work, and dont they have the same ground as the other lights? Also the bright and the turn lights dont work either and I did replace most of the bulbs.its a 68 valiant if thats any help (hopefully this makes sense)
thanks