I have the same unit you do... forget the under RV fitting... unless you are heating the outside.. You need to buy the adapter hose from big buddy the fitting is proprietary.. THEN add a T connector with shutoff under the stove. The hose I got from Mr Heater is 10' long and works well
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
140 days boondocking in 2016
211/2015, 196/14, 247/13, 193/12