Alternator Wiring Question

Hi all, happy new owner of a 1965 Barracuda with a 1971 340. Previous owner made some interesting choices in the ignition wiring. I'll try to keep this short. As seen in the diagram, the alternator has a wire going straight to the positive battery terminal. From the wiring diagrams I've seen, this is incorrect, it should have two outputs, one to the ballast and one to the voltage regulator. I've also found that IGN1 and IGN2 are connected together from the ballast (B and A) and connected to the Ignition input to the Mallory Hyfire IV. I've been told I need a "one wire exciter" but I'm not clear on how I would wire this. Any suggestions or advice, please!

Barracuda_Wiring.png