OK/ The rear air unit is in ! Like most things a bit more difficult that advertised. Like others I snaked power over and through air duct. I took to closet and then used wiremold to run to bottom. My unit is a 2114. I am going to upgrade to 50 Amp service. I'm leaning to moving new box to bottom bay. I have put solar on roof and the inverter will be in bottom bay and thus makes sense to have everything close. The inverter I purchased (2000 watt) has an automtic transfer switch and charger. Thus when batteries (4 Trojan) discharge to predetermined level the Generator will be energized. Yes, I need to upgrade generator to larger size. Any help from others that may have done this. Also redoing inside. I think I will be in this unit for a long time to make this expense worthwhile. But, it is an adventure.