Looking for help! My 74 Dart sat all winter indoors and when started for first time this spring alt charged for short bit then stopped. I have done the following. New Alternator since old one was making noise anyway New regulator New ballast..4pin New ground battery cable Refreshed all grounds to body and engine. I have the wiring diagram and have found no bad wires yet! I have not yet checked wires as they go through firewall. Anyone know which wires through firewall allow alt to charge? Main power feed from amp gauge has good connection through firewall.