No power to instrument panel lights.

HOW THIS WORKS. The light switch has TWO power sources. One supplies ONLY headlight power. The second is FUSED and powers the tail/ park, and the instrument lamps. When the light switch is ON power from the tail circuit is connected internally in the switch to the dash dimmer control which must be TURNED LEFT and then that dimmer controlled power comes out of the switch on TAN, goes TO the INST fuse in the panel, and from there distributed to all dimmer controlled lighting, via orange wiring

So all those conditions must be in place for the INST fuse to get power