The important this is to make sure the crossover cable doesn't become loose, corroded, or broken.
Its the corrosion at the terminal of the cable thats allowing the voltage to drop, that the ECM sees, (or what ever senses the voltage) that causes the alternator to then try to charge the batteries, but ends up cooking the right side. The sign of this, is the right side battery will look like it has been cooked. I was talking to my brother and just by coincidence my brother told me his tech told him his batteries were on borrowed time (they are original batteries). After I described to him the issue with the right side battery, he went out to the truck and described over the phone exactly what I was talking about. The cable size is OK, its the corrosion thats causing the problem.
I like what TLane is going to do and I think I will do the same. I will be buying a set from Costco tomorrow, Any recommendation for the type of grease to use? Is there a proper sequence of replacement so the truck always sees 12 volts during the swap?