Need help setting up dual alts

[Sethjordanb]

Hey guys I'd really appreciate it if someone could explain how to wire up dual alternators. I have a 2000 Chevy 1500 with the 4.3 and currently just have a singer 320 amp 6 phase in the stock location and I just picked up an excessive amperage 300 amp and the dual bracket with a pulley and belt. I would like to know how to wire the 4 pin connector, ground, and what exactly I would need to do with the power runs. Any help or advise would be great. Thanks