Originally Posted by Jim G
Good advice. I was surprised when I found that even with the relay switch set to disconnect, there is still a parasitic drag on the batteries. I installed a switch to cut out the propane relay, but there is still a drain. I also installed a disconnect like in the picture.
With the coach batteries off with the main switch should disconnect these batteries. The only things that are attached to the batteries themselves is the awning and step fuses.
I have my rig in a storage location for months and my house batteries disconnected drain slowly. I just checked mine yesterday and they were down to 10.5 volts after being left for 3 1/2 months. I started my engine for about 5 minutes and that took the batteries back up to about 13 volts.
You can also pull the fuses attached to your batteries to se if something is still on somewhere.