Hey Jim you could have saved yourself some money by ordering the kit that did not have the 120 volt power supply.. since these things operate on 12 VDC.
Since I use mine on RV 12VDC only I added a power point (formerly called cigarette plug) to the lower flashing and wired that directly to my battery. That way there is only a hole in the trim and not in the wall of my RV.
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.
215 days boondocking in 2016
211/2015, 196/14, 247/13, 193/12