Although I seem to have most of my "Phantom" drains off my Chassis Batteries, I have a small 24vdc charger (Battery Tender) installed. It is hooked up correctly and is doing a great job. That being said, I have not as of yet hardwired it to the bus, and just plug it into an extension cord if I am parked for any period of time. I have been told that to connect to the small box that provides for my Block heater is the easiest way to do so. But, that would cause me to have power to my block heater all the time which I don't think I want. I would prefer to have a way to control the power for both the BH and Charger from the cockpit. Any thoughts without a real major "project"