Identify these wires please
This is a separate question from my battery switch thread.
The batteries in the picture have been replaced with deep cycles, and I arranged them in parallel from a youtube video.
What are each of the Red, Blue, Yellow wires servicing?
2016 Jayco 27RLS
2015 Ram 2500 Big Horn Cummins Diesel 4x4
19xx Beautiful Wife
2 x Golden Retrievers