I'm going to change out my battery cables to 0 gauge. what length do they have to be? Also I noticed that there are 2 cables comming of the pos terminal: what is the extra one for?

*Edit*
To clarify: I couldn't find any 0 gauge battery cable kits, so I am going to buy the cable and some O connetors to make it my self. I just need to know how much cable I should buy.

 

One cable goes to the starter and the other to the fuse box to power the car. I'd say about 8 to 10 feet of 0gauge, extra can always be used elsewhere.

 

a short piece of 0 gauge makes a good weapon to induce blunt force trauma

and if you make some into nunchukas don't hit yourself in the nuts with them, yes I did that, and yes it hurts, a lot. I was on the ground for several minutes ears ringing. being drunk while installing a stereo at 4am is ill advisable

 

ok I received my 0 gauge 10 ft red, and 10ft blk cable. now I just need the O ring connectors....I already have my gold 0 gauge terminals....

 

Check EBay

 

yep I already did!