Need some help with diagnosing my car. Young guy learning

Yes.
See my response in your other thread.
No cranking, radio, interior lights or headlights working.
1976 Wiring is very different than previous years. 1975 I'm not sure what you have under the hood, or whether its been altered Take and post some photos.
Also might want to look at this thread for an example how meters can be used to pinpoint a problem location. Even with some communication confusion, the location was identified by the testing.
Had headlights, then high beam only, now nothing
is it possible for my ignition module connector to be the culprit? had a buddy sit in the car while i wiggled some wires around and i played with the ignition module connector and the lights turned on for a few seconds as well as the radio. also would like to add that i replaced the ballast resistor and the voltage regulator.