Re: Help with small battery bank hook up.
Ideally, all external connections to the battery bank should be made to the same pair of terminals. One solution is to use distribution bars between the battery bank and all sources and loads.
For small 12 V systems, you could also consider using a small Square D load center and Square D type QO breakers (rated for 48 VDC, all available from Home Depot) as a "combiner box" between the charge controllers, battery bank, and inverter(s).
If you need/plan to connect the controllers and inverters directly to the battery bank (via fuses / breakers, of course), and if it's getting crowded at the battery terminals, you might use one "diagonal" terminal pair (per the drawing) for the two controllers, and the other diagonal pair for connecting the inverter.
Jim / crewzer
120618: System off-line for a while...