Originally Posted by gr8white
Even while driving down the highway my truck shouldnt charge the batteries? The batteries dont charge at all and they are far from depleted. I would think if Im driving 5 hours, my batteries should charge. No?
At best especially if running fridge while traveling it will trickle charge your batteries and just maintain voltage , in 5 hours it will NEVER charge 3 deep cycle batteries.
The charge wire is 20 + foot long and small gauge, it cannot carry very much current.
As far as not charging at all "separate" issue, you need to check the charging wire fuse in you truck.