So, I disconnected the battery entirely. With no load the battery charger is putting charging pretty heavily with not noted improvement in the condition of the charge the battery holds. However, it is about half the charge rate vs. when the battery cables are connected.
So, I noted that my new Prodigy III is hot and reads no trailer connected. However, my tow dolly is connected. I figured maybe something happened to the trailer brakes. Disconnected the trailer. No change. Disconnected the brake controller. No change. Unplugged the brake fuse. No change.
Now I'm stumped. I have pulled each fuse individually and each relay individually with no change in the draw on the battery. The only thing that changes it is actually disconnecting the battery.
To the dealer it goes in a week. Hope it is a quick, simple fix. I've only owned this thing for 3 weeks and am really looking forward to a great spring and summer of camping in it with the family.