Found my dads original 1971 duster!

Did you check both sides of the fuse for power? There should be 2 that are hot at all times, 3 more that are hot with the ignition on and the last one hot when the headlights are on. At least as best I can tell from the wiring diagram I have.
Thanks! I’ll try to see. So eliminating the dash and IVR won’t have anything to do with that? Lights etc should still work? The rallye dash with all the gauges is out of the car. I take it in on wed to have it repaired and solid state system put in it