If you're actually running ~1200 watts or more run 0 gauge all the way from the battery to a distro in back. Then run the biggest wire the amps will accept from the distro to the amps. Do the big 3 in 0 gauge as well. But as others have said 4 gauge is more than enough for the stuff you currently have.
If you're actually running ~1200 watts or more run 0 gauge all the way from the battery to a distro in back. Then run the biggest wire the amps will accept from the distro to the amps. Do the big 3 in 0 gauge as well. But as others have said 4 gauge is more than enough for the stuff you currently have.