62 Valiant dash lights

If ammeter is "reversed" either it's not actually charging or the wires are reversed. With engine off turn on headlights and confirm it goes to discharge. If not, reverse the wires

Dash lights...........what have you actually done to check. Most all dash lights work same in these cars

They get there power from the park/ tail circuit which feeds to the headlght switch. Headlights ONLY power is a separate source.

Dash light "functional path" is from light switch---through dash dimmer switch---TO fuse panel INST fuse--------to all dash controlled lighting on orange wiring

So to work, the tail/ park circuit must work, the switch must be in park or head, the dash dimmer must be twisted "to the left" and the INST fuse must be good and making connection.

First thing I'd do is double check park/ tail lamps work, and then with light switch on and dimmer control to left, check for power at the INST fuse. If you don't have it there, suspect a bad dimmer control in the switch. Twist it vigourously a bunch to clean it and watch for intermittent lamp operation.

Also check for other lamps than the cluster such as heater/ radio If they work and not the cluster, it MUST be right in the cluster, or harness connector