Gauge cluster worked before then after reinstalling the cluster
none of the gauge lights or
interior lights work. Checked all the fuses there ok. I've read
that it maybe a grounding wire but there is only
one plug connector to the cluster and didn't see where
any grounding wires were. Any suggestions would be appreciated.

 

there should be an instrument cluster regulator/relay behind the gauges. I would think its either not making good contact, or is bad altogether.