Just an update to this post,
I was faced with a charger problem. It died. That was to be expected as I think it was installed in 1975. So I did a couple of things. I cleaned up the charging wiring - removing the 12 AWG and installing 6AWG from a new Sterling Pro Ultra 40 amp charger to the new Positive Buss bar with new fuses,. Changed the connections of the 2 batteries making them a single bank. Removed the alternator for either replacement/restoring (in the shop), installed new jumper wiring, removed the old black tape and covered the 1AWG wire with RED adhesive heat shrink (clarifying the wire is on the positive side to the 1/2 Both switch) till new battery wires are received.
Old
vs NEW
Here is the new work Over all layout
Negative buss bar
Positive buss bar with fuse block
Still need to add fuse to wire out top of buss bar. It provides power to shower sump pump.
Progress is happening despite the 29-36 degree weather.