Charging system

Muad'Dib15 said
1. You guys have said earlier that IGN1/IGN2 do not stay on at the same time at all. How am I supposed to run an electric fuel pump on IGN1 if I need it to start the car? Or is that something that needs to be split to both circuits to start the car and run it

Yes

Muad'Dib15 said
2. Can I safely assume that everything connected to the splice on the black wire side of the Ammeter is hot

Yes, and anything connected to the battery side of the ammeter too

The ammeter only reads current going into or out of the battery. If the engine is off, then it tells you that there is a draw on the battery