Can't help you with installer, but can tell you that I mounted mine on my Vegas on the curb side next to the seat. It is just ahead of of the padded rail cover that comes down with the bed. The wires go straight down into the forward curbside compartment, then back through the wall to the coach batteries under the entry stairs. I use it to run a small fan and heater, crockpot, phone or computer charger. Anything I run off the inverter has to have a cord connecting it the way it is set up.
You may be looking for something that is switchable and capable of running almost everything in your coach, including the TVs. In that case, none of the above applies!
May the trails always twist in your favor
May the tales always end in good light
May you have more friends than one campfire can hold