No 12v input from battery, 2004 Terry Trailer

Hey, just think of this as an opportunity to buy an upgraded converter. The much more capable units aren't really that much more expensive if you already have to do a replacement, shelling out $30 more for a PD unit that will actually correctly charge your batteries seems like a good investment to me =)
I can't justify it on the current rig as we almost never boondocks due to tiny tanks, but if I had a bad converter I know I'd pay the extra couple bucks.