an electrical nightmare , please help , 1972 dart
So this is your basic system. I would suspect the firewall connections as you have intermittent connections shown in your testing of voltages and amps. That would be a reason for no headlights if now power gets to switched on. Run a good sized jumper from alt + to battery + and see what you get beside an ammeter that only shows discharge by amount of amps being used. Test voltage at batt. There will be two paths for power to get to all circuits. Plug an after marker phone charger/voltmeter into your cigarette lighter to see voltage on road.
So this is your basic system. I would suspect the firewall connections as you have intermittent connections shown in your testing of voltages and amps. That would be a reason for no headlights if now power gets to switched on. Run a good sized jumper from alt + to battery + and see what you get beside an ammeter that only shows discharge by amount of amps being used. Test voltage at batt. There will be two paths for power to get to all circuits. Plug an after marker phone charger/voltmeter into your cigarette lighter to see voltage on road.
