Ignition Issues on 74 Dart Sport
Pretty simple. Get a shop manual. Check voltage at the ignition switch connector. If there, move out into the engine bay and check for voltage at the proper terminals of the bulkhead connector and or ballast resistor.
Also check over the big white engine harness to engine connector, a big white colored rectangular connector. A known troublemaker. Consider cutting it out and eliminating it
If you want to mail me a USB stick with a return mailer, I will send you a free copy of the complete 74 manual
Standby....................