Car battery wiring question and engine noise

[plyer3 10+ year member]

I may get another battery in the front and will have 2 in front and 1 in back if i do. Should I wire the new front battery to the front battery pos to pos, neg to neg, and maybe wire a 4 gauge from alt to the pos?

Also, i just got the engine noise again....it may be from the 0 gauge power/ground in the back battery that are close to the 4-channel and mono RCAs....also the mono's ground isn't connected to the neg of back battery yet, just the chasis right now.

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[loopkiller 10+ year member]

Yes just run all the batteries in parallel.

 

[plyer3 10+ year member]

ok, man that's gonna be a lot of fuseholders and fuses...

 

[loopkiller 10+ year member]

4 for the batteries

1 for each amp, unless you have a fused distro

 

[plyer3 10+ year member]

nah i have a knu 0 in and 2 4awg out non-fused. im going to fuse the 0 gauge that way ill save buying another.

 

[loopkiller 10+ year member]

nah i have a knu 0 in and 2 4awg out non-fused. im going to fuse the 0 gauge that way ill save buying another.

You still have to fuse the 4 awg sections with a 125A fuse. Simply fusing the 1/0 before the distro is not good enough.