no marker lights, dash lights nor dome light

383Scampman said
Check the fuse panel marked "acc." or "instrument" . should be 3 amps. glass fuse . Located left of steering wheel under dash .

The instruments are not really "supplied" from that fuse. They are actually sourced from the tail/ park circuit, goes through the light switch, dash dimmer control AND THEN to the inst. fuse.

Since he has other problems, I'd guess it is "upstream."