I'm not pulling diagrams but Ithought about it and think you are, SOMEWHAT correct :icon_fU: for stock cars, and I think I know where I went wrong
In MY car, all the current flows through the ammeter if it's hooked up, because I bypassed the bulkhead with my charging wire.
It's been some 20 years or so since I did it, and now i don't remember!
I gotta keep thinking on this. I'm also thinking, "don't these cars die if the fusible link goes?"
If so, that would back my original position, but I also know a field issue on the alternator will smoke every light in the car. It's been too long.