Some considerations about the charging and wiring upgrade and your worries about

[Nacho-RT74]

You can duplicate the stock system specially if loads remain the same ( no extra accesories added ). But if you are to upgrade why use the same gauge on the parallel wire ?. I initially used 8 gauge wire on my car for the black one and 10 for the red one but just because I had at home those gauges on those colors. I could use 10 gauge on black too which with the 12 gauge wire still in use is plenty for my car.

BUT the wire thickness goes to each own according with the electrical loads on car. Still needs to take in mind if the alt is able to provide the more power as posible at the minimun speed as posible

[Nacho-RT74]

deleted... I posted some stuff on wrong thread ( what it happens with several tabs open LOL )