Bypassing the Amp gauge - Question about the MAD Electrical method

If it looked like this, even with the partially charred fusible link, that completes the main circuits.
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This looks right, or at least the way it was. I have some thing disconnected now. Thank goodness I took pictures! The fuse link was really bad, barley hanging on by a thread. The connector was really melted too. This is why I was tearing into it to begin with. That's how I found that there was no red wire to the ammeter.

Does the blue field wire to the alternator join at the regulator, or the ballast resistor, or a splice in between?
Following it further back, does it connect to the Ignition 1 wire at the ballast, then back to cavity N ?
But it might be wired to something else, like the new J (red)???

Blue alternator field goes to both the volt regulator, resistor, and to N. The green one goes to the volt regulator too. Neither is not spliced to the new red J.

I feel you should know a bit more about what I know on the car. 1967 Barracuda notch, originally a 273 car, now it has a 1973 Duster 340 in it with the A833 4 speed. The rear end is a Ford 9", not sure what car or year it came from though. So there are a few mix and match parts on it.