Help wiring up 2 batts and doing big 3

[biggris79]

I be adding a 2nd battery and I will be doing the big 3 to I'll be running 2 0 gauge wire form 2 amps what way should I wire this up I know how to do the big 3 with the factory battery how should I wire up the second and should I ran both amps of the 2nd one the amps are the rockford t2500bd and the jl hd 600/4 what parts should I use thanks

[FroznBeavrBALLs]

are both batts up front? if not just do the big 3 to the batt up front. Then run 1 or 2 runs of 0awg positive to the back batt with a fuse near both batts on each run, and 1 or 2 runs of 0awg of negitive to the back battery. then run your amps off of your back batt.

[Chally]

Wire the two batteries in parallel + to +, - to -.

[biggris79]

They are both up front there's already a spot for a extra batt up front

[dyablo409]

They are both up front there's already a spot for a extra batt up front

There you jave it just run two wires pos and neg to the second batt and connect your amps to that one and you will be set

[biggris79]

K thanks and if I decided later to run a 3rd batt what wires coming from up front to the back can I use the the wire have for the amps and ground it in the back I want to make sure I go ahead and run what wire I need if I decided to run a 3rd batt in the back without having to run more wire I can go ahead and run the wire now and just not hook it up tilmi decided to go with a 3rd