Clev - the only wire/cables I would have on my batteries is/are the interconnecting 2/0 or 4/0 battery cables and the positive - negative cables going to the inverter. Exception being a battery temp sensor.
From the inverter I would run two “systems” wires, + & - to an appropriate size bus bar. From there you add all your other 12 volt connections.
Some examples here.
https://www.amazon.com/gp/aw/s/ref=i...holedc+bus+bar