Hi Guys, I am wiring up my truck and travel trailer and I would like to wire up a battery inside my trailer to run 12v stuff. What I need to know is what gauge wire do I need to run from my alternator to the trailer battery? And to what on my truck do I connect the wire to send the juice back to the battery in the trailer (is it hooked to the alternator)? Thanks again!!! Rod In Canada we use K5s instead of dog sleds now!