I had the same problem with my battery draining with the convenience center battery switch off. I have electric jacks on my 2019 HC, but the drain was from the carbon monoxide detector on the kitchen island. Why they hotwired this I don't know-- it's guaranteed to drain your battery dead while in storage.
I added a marine rotary battery switch I got on Amazon for about $17. I ran a long red lead from the battery to the new switch, (through the gas bottle space (take care to prevent chafing), drilled a hole to the front left cargo compartment front left corner, then another red wire back to the multi-lug post on the bulkhead above the battery), so when I open the cargo door to get my step stool to connect the trailer, the new battery switch is right there. I never bother with the factory switch in the convenience center any more.
You can get long red wires at Walmart or any auto parts store. Super easy to install.
Switch link:
https://www.amazon.com/AWBLIN-Discon...RydWU=e=sp_atf