Tape vs split loom

OE wiring strategy of running lower amp accessories through ammeter
Shouldn't be. Didn't say what year, but its really late before they go to a remote shunted ammeter.
OE ---
Everything runs through the ammeter when on battery power.
Everything runs direct to the main splice when the alternator is running.
Main_charging_wires.JPG
Power flow shown at
Understanding Charging Systems with Ammeter