Found my dads original 1971 duster!

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
While they have it, ask them about converting the Ammeter to a Voltmeter and make your decision based on what you hear.