hi divemaster,
had a look at some of your photos in hopes of finding that volt meter..lots of great pics, thanks for the look. however, i'm afraid i stumbled onto a picture of your battery bank? is this the one we wish to monitor and control?
that sort of configuration we see in your pic is better left to the more expierenced RE guys who might be able to spot trouble from a mile away or like a bit of excitement in their system.
if we want to stay with that art deco/cubism picasso look (love it!) you might set up a pair of busbars and run all the batteries(each one)to those and then treat the bus as your battery terminals.. that might at least give us a shot at some reliable control and monitoring.
we work with what we have, it's all good fun!
kind regards, dave