Is 4guage alright?

[wschmidt22 10+ year member]

yeah i was also wondering if my old 4 guage would be able to hack it.. but since i'm getting new subs/amps/comps... i've pretty much decided that i'm doing a complete electrical system overhaul... all new wiring.. going to run 1/0 guage, do the big 3, and possibly a HO alt...

 

[2critical 10+ year member]

Its defiantly not 20 feet, maybe 16

I would get 2 awg then. If you think you may upgrade later, don't waste time or $$$, get 1/0.