Electrical ? What is it and Why?

[jwe648]

Still Pluggin away on my 74' project. Water tank and pumbing in & working.

So I started working thru the Battery system. The coach has 6 8D and 2 4D's, Two 2000w Inverters and another converter.

I messed up a bit when I just left the coach plugger into my 50amp service so.. I wiped out 2 8D & 2 4D battries.. My Bad....

When I tried to completely shut down the system (some Battery switiches) the inverters continued to blink and the fans ran. I had to disconnect all the - cables to get it all off.

So now to the question.. I'm sure I will have more. In my Mid Bay resides 2 of the 8D batteries and what appears to be a Battery disconnect and 3 little black boxes with wires to the switch.

The battery switch switches + current.. not sure what the little boxes are.

It appears that other batteries are also connected in the system.

I have a feeling that all the coach batteries are hooked together. Although I can disconnect the 2 8D engine battries with a switch in that bay. There seems to be enough 1/0 copper wire that I could retire on the sale of such...

Any way I have attached a couple of photos ... If you have any thoughts or awiring diagram ... that may clear the fog ...