Just installed a 50amp EMS from Progressive in our Seneca. Working time approx 45 min. Did not have to add any additional wiring. Mounted the unit in the basement with the cord reel. Very straight forward, the difficult part is working with the stiff, heavy gauge wiring. One tip that I discovered is too shorten the white wire on the output side by 3/8 inch. This allows you to bend the red and black wires for additional clearance for the inductive sensors that fit around them. Here is a pic of the final install. One other note by installing in this position the display will be up-side down if you install according to the manual. Just unplug and flip the circuit board 180 degrees.