Could you clarify on the fourth wire upgrade and the last two things you mentioned for me please?
I think he was either kiddig about the 4 or typo... High output alternator, a secondary batter or multiple batteries depending on system needs, mla voltage modular and XS power VCN
nope not a typo big 4 is also an extra ground from the alt to the battery, because your alt is the best ground on your vehicle!
Missing Link Audio module spikes your voltage pretty much, and the vcm is right here Click here to read about it, i would do a new alt, or at least a smaller pullly on your stock one