Draining the batteries

[diver57]

Hi
I have a 2016 GMC 1 ton dually with a 10’ 2 northern lite camper .
When I bought it I had the 7 way plug put into the box for power to the camper.
I also have 2 - 100 watt solar panels with a 2000watt inverter.
The problem is if the truck sits for 3 or 4 days it drains my truck batteries completely, and my camper batteries are fully charged
I would have thought there would have been a battery isolator in the truck somewhere.
Any ideas of what is happening here

Thanks
Sent from my iPad

[fpoole]

When I got my 2016 RAM and went to have the camper put on, they checked to see if the RAM had and issolater.
Nope, so I had them put one in.

Otherwise, what happens when you pull the power cord from truck to camper... maybe it defaults to the Truck, dunno, but I would think if camper wasn't connected to the truck during that time, it might go to the camper batteries..

Just thinking out loud here... also, just in case, an inverter will draw power if on, might check that for power loss...

Hope that helps a little...