65 no dash cluster, radio, oil, high beam indicator bulbs

Oil light outage can be caused by poor connection of conductor at sending unit located on oil pump, bad conductor feeding indicator light, and corroded connectors at bulkhead, and burnt indicator bulb in gage cluster.

Dash light failure can be from bad ground, bad circuit board, bad circuit board connectors, and burnt bulbs. You may have to pull gage cluster to get a good look at the electrical condition of its circuit board and related connections.