If you want the Connect system to continue to run, then it will eventually run down your battery. In this case, it seems to me that putting a charger on it would be best,Well, while I agree, one probmem if you have a total disconnect is that your EConnect will also flatline. I just added a #10 wire from the plug to the large battery positive. I also installed a 30 amp diode to keep it one way. Had similar in my Jeep Liberty. That one was SUPPOSED to have it all done by the installer as the brake was electric. They wired the Jeep, but forgot to check the RV! Half way between NJ and Tulsa I started getting warnings, I had one spare day there that I spent chasing down teh parts I needed to install a 12v line in the RV. This time its the reverse! I am going to add a 20 amp fuse in the circuit. No way I should need any more than a trickle charge. But I am wondering, what if I installed a 'brake light kill switch? Break the line on the brake light switch and put a toggle in?? If that is the issue, the Jeep 'wakes up' when the brake switch is activated, maybe that would solve the issue??? Thoughts.