Why do you need a battery diagram to change out existing batteries? Unless you are doing something else like increasing your converter's amperage or adding solar panels, it seems that you just replace what you have with something that works and fits in the available space.
NOTE: Even though cbeierl provided two sets of wiring diagrams based on serial numbers, the batteries are wired exactly the same in both sets.
In general, there are 6-12v batteries, wired in Parallel. Notice that even though the 6 batteries are wired into one higher amperage bank there are two separate positive and negative load take offs - one each to chassis and one each to the inverter.
__________________
2017 Winnebago Adventurer 37F
2024 Lincoln Nautilus Hybrid Toad