Found my dads original 1971 duster!

Oh boy!

The later panels like yours may have more grounds than my 67 but the three I mentioned are the ones I know for the interior.
In theory the instrument board will be grounded simply by mounting it, but at least on mine I found the factory had ground wire from the capacitor mounting screw to the radio support strut. I didn't see cap on your dash. I *think* it may not be needed if an electronic IVR is installed.

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Loose wires - broken connectors. Any of them could have been a short, or a short waiting to happen.
Hey, Mattax. So quick question. I cant find any loose wires, bad connections etc. If I have the dash out, those 2 wires (red and black bolted together) it obviously now lets the car start….but should I also have power to the headlights, interior lights, signals etc (everything that doesn’t need the IVR conversion to 6 volts)?
I’ve never been able to get power to any of these yet. Or does the dash need to be installed back into the car to power this stuff up?
Sorry for the probably obvious question, the wiring end of things is just very confusing for me. Thanks