Our year model car DID NOT come with a red fuse. I think they started coming out in '87. I had the same problem which I ended up taking the cluster to Steve's shop in Gainesville. He soldered a couple of wires in the back of the cluster and probably that is what you are going to have to do...
Probably you already did but, did you check the rheostat or light dimmer? Sometimes they move when you are working with the cluster.
Good luck
