Factory ammeter
The wires at those junctions are not soldered together. They are welded.
A schematic of just the main circuits looks something like this.
You can confirm/correct the details using your FSM and what you find on the car.
The junction where the alternator output meets the battery feed can be thought of as the power distribution point.
From this junction power, regardless of whether the power is coming from the battery or from the alternator (engine running) its going to go to either the key switch, the headlight B1, or the hot buss of the fuse box.
Additionally, if the battery needs charging and the alternator can provide it power, current will flow into the battery line.
The wires at those junctions are not soldered together. They are welded.
A schematic of just the main circuits looks something like this.
You can confirm/correct the details using your FSM and what you find on the car.
The junction where the alternator output meets the battery feed can be thought of as the power distribution point.
From this junction power, regardless of whether the power is coming from the battery or from the alternator (engine running) its going to go to either the key switch, the headlight B1, or the hot buss of the fuse box.
Additionally, if the battery needs charging and the alternator can provide it power, current will flow into the battery line.