If you have two outlets the listed transfer switch is plug and play.
1) Look at the picture, it has three cables. The one with a plug you just push into the inverter outlet right there in the fridge compartment.
2) Put a plug from Home Depot on the other input. The wire next to the plug. Plug this into the existing outlet that supplies utility power.
3) Put a female end on the output cord(the wire on the right). (Home depot has this connector also) plug your fridge into the female connector and your beer will be cold in just a few hours from either source.
This does not power the whole RV, just the fridge. The switch will never connect the two sources at the same time so all is good. Plug and play, no worries.
