Charge Line
A recent message said that while I am on the road my truck is actually not doing very much charging of the batteries in my 5'er. The trailer carries two group 27 deep cycle batteries. The poster sai...
Forum Discussion
The truck in stock configuration will charge the batteries. The question is how much and how fast. Installing larger wire from you're truck's batteries back to the 7 pin plug will help greatly. #8 is about the largest that will fit in the connection on the 7 pin plug. However, you can run larger wire and splice it to a short piece of #8 right at the plug.
Some people have installed a separate cord, just for the + and - wires, to run really heavy wire. I think one made for lift gates on big rigs takes up to a #2 wire for 100 amps. Of course, the wiring on the RV side of the connection would also need to be upgraded.
I would install at least a #8 (properly fused at 50 amps) from your truck battery back to the 7 pin plug and hook it to the +12v terminal in place of the factory wire. If you would like to have this wire unhooked when the truck engine is off a voltage sensing relay (Blue Sea makes a good one) will be needed.
Some people have installed a separate cord, just for the + and - wires, to run really heavy wire. I think one made for lift gates on big rigs takes up to a #2 wire for 100 amps. Of course, the wiring on the RV side of the connection would also need to be upgraded.
I would install at least a #8 (properly fused at 50 amps) from your truck battery back to the 7 pin plug and hook it to the +12v terminal in place of the factory wire. If you would like to have this wire unhooked when the truck engine is off a voltage sensing relay (Blue Sea makes a good one) will be needed.
