burningman wrote:
Here’s what works:
Buy a 25 foot 2-gauge set of jumper cables.
Cut the clamps off.
Buy one of these: Quick disconnect
Put that on one end. Run the cables to one of your batteries. Put some battery cable lugs on the other end of the cables and bolt them to the battery.
Do the same on your camper, run some 2-gauge from the batteries to the other half of the quick-disconnect.
If you want to be a little fancier about it, it wouldn’t hurt to install a 150-amp breaker near the truck battery, like this one: 150-amp breaker
Now you’ll have full current to your camper batteries to charge as quickly as possible. You can just unplug the connector when parked and using the camper, simple and free, or be as fancy as you wish with a shut-off switch or a solenoid wired to the truck that’s “hot” only when the ignition is on.
This is how I do it, and it works great.
I've been thinking about such setup, so would you mind to show details, that still bother me?
1. How do you protect the jump cables from rubbing insulation around the truck frame?
2. with tall sides on new truck, I have no access to put plugs inside the truck bed. How did you do it?
