1970 Dart Headlight Switch

well, wherever PRNDL is should have a bulb on a orange wire. Not all ash trays were lighted and the 68 ash tray has a remote lamp. The light travels a fiber optic strand to the tray.
If you cant access any orange wires anywhere... I suppose pull the headlight switch is next.
There are only 4 illumination bulbs in the average inst' panel. Those bulbs and their sockets are questionable. All 4 out for one reason or the other? It's possible. I just like to know there is power going there before I move on to pulling the inst' panel, or laying upside down attempting to service them from underneath. Good luck with it.