Adding a battery - questions.

So - as part of my stereo upgrade - I'm installing another battery. It'll power my two amps and head unit. Subs require a 90 amp and 60 amp in line fuse. HU it 10A. Amps call for 4AWG to each amp.

I plan on using at Blue Sea "Add-a-Battery" - but what size wire from the new battery to the switch and to the distribution panel for the amps and stereo? 2AWG? I'll run the battery neg to a buss bar - and should I run the battery positive to a fused distribution block so I can have a fuse panel? Or - a regular distribution block and run inline fuses?

Fuse at the battery - what size fuse at the battery - before the Switch? 200amp? Blue Sea fuse block terminal (like their part # 32561?)

Anything else I'm missing?

Thanks

1/0 for your main power cables to a fused distribution block forsure as for fuses I don't know


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