Car Audio Installation and Capacitors?

[KmsPathinder]

a capacitor is like a small battery so really nothing just fuse it right and you will be good you have enough battery and alternator for your system

 

[xXHalo_KingXx]

I have a 220Amp H.O. Alternator, a 1900 Shuriken Powercell in the front and a 2400 Powercell in the back.
System RMS is 3600-RMS at 2ohms Bridged at 14.4 volts
The Batteries are separated by a 200-AMP battery Isolator.The rear battery sits at 13.01 volts, just sitting, no draw or charge. The battery Isolator is installed because I don't have 1/0 gauge to the Alternator because it is in the most inconvenient spot, I.E. Ford Escape side mounted DOHC V6

What would it do me, to put a capacitor between both batteries and, and the then another capacitor between the back battery and the amplifiers.

If so, what would you recommend?