Well, I flunked the Smarty Pants thread...........so I probably will expose more ignorance here.......
But, other than the pictures and the batteries are turned 90 degrees from each other, what is the difference? Both are wired in parallel. The only true difference I see is that in #1 the neg goes to neg on the source, and in #2, the neg goes to a ground.
"Next to prayer, fishing is the most personal relationship of man"Calvin Coolidge
"American by Birth, Southern by the Grace of God"Lewis Grizzard
2016 GMC Denali 3500Dually--2017 CC 36CKTS