Hi GradyB,
That's certainly a possibility. Have you checked brighter/dimmer function of the headlight switch? Sometimes the knob can be turned too far one direction or the other and it won't energize the dash bulb circuit. Those old switches can be found in really rough shape after 70 plus years. Jon G has a great headlight switch refurbishing thread to reference. Let us know what you find and you'll get plenty of help.
