Ok lets see if I have this right, off the aux battery terminal in the engine bay I will mount a 120amp breaker that will feed the 1/0 wiring to the truck cab. The 1/0 charge line will enter my wiring enclosure in the cab and go through a battery switch then through the automatic charging relay and connect to my five post 650amp buss bar.
Would it be a good idea to install another breaker on the incoming charge line from the engine bay so I would have one on each end?
Then from the buss bar I will have a battery switch and another 120amp breaker to feed the 1/0 wire going to the plug in the bed to charge the truck camper batteries.
I plan on 3/0 wire to each of the two 8D Lifelines in the cab so I need two more breakers one for each battery,(what size breakers should I use on the batteries?)each battery will have a battery switch as well. It looks like the inverter will need a 300amp breaker or fuse.
Again thanks for the help.
I found some Marinco ANL and MC10 class T fuse holders for 60% off is why I was asking about the fuses.