Now that the outer turn signal light issue has been resolved onto the interior indicators.
Again this is on a 71 E body.

No lights working at the light bar for the dash, turn signal indicators in dash do not light up, key light does not light up, console light does not light up.
I checked power to the dimmer switch and I get good power there.
Is every one of these items on the same circuit?
I checked fuses, and all were good.
I checked bulbs in light bar and key light and they look good.

All dash gauges work, including the E-brake light.
Dome light works, and door buzzer works.
Blower motor works
Wipers work
Horn works, headlights and hi beams work

Suggestions on where to start?