Crazy Clio said:id use a miniumum of 4 gauge mate.
I'm doing this mod soon, may be having 2 more batteries in the boot, but im using 0 gauge for ALL this, should be running 4 12's with a 3000wrms amp! Possibly going to use a Ohio Generators Alternator.
Id say off the top of my head 4 gauge is about 10mm ish.
Are you using a split charge set up with a relay etc ?
Dink said:yeah i just measured an off cut of PG 4 awg and the conductor is about 9mm in diameter
the 5.5mm ones prolly 8 awg
Dink said:wouldn't it be better to take your amp turn on from your hu???