Wiring help needed

The problem with OEM diagrams 73/ later for A bodies is they are drawn completely different and can be more difficult to follow depending on what you are doing. "Someone" around here offers colorized diagrams, I don't know if they are available for the later ones. If you don't have the MyMopar aftermarket two-page diagrams, they are NOT complete nor as detailed, but they are "old style" line drawings and can be easier to follow

What are you doing about the bulkhead connector and ammeter? Or is this an external shunt setup, might be? If you keep the ammeter, make certain it's in good shape and consider silver brazing the studs to the shunt

Other big problem with the old girls is fusing was never "enough." There are several circuits that can "burn down the house" and the main fuse link is just not enough. The 73/later stuff was a tiny bit better

A recurring issue in these old girls is the harness voltage drop from battery, through the harness, bulkhead, ignition switch, and back to regulator, and cause over charge voltage. Consider adding a relay triggered by IGN1 to feed the underhood ignition and VR loads