15 minutes to clear out all the junk that has already collected in the cabinet, add the wire clamp on the cut off switch and organize the items back into the space. In the far reaches, I have my manuals and RV maintenance/repair guides. Up front are shoes on a 3-level wire rack.
I took about 30 minutes to install the breaker. This was mostly due to my paranoia of screwing into a water or gas line, so I opened up the panel above the generator to see where it was clear to attach from the other side. I used shorter sheet metal screws than what Host supplied since the breaker is just screwed into sheet metal with no other backing. This also gave me a chance to check water level in the batteries (no additional needed).
Another side note: I currently have my truck electrical connected to the camper all the time. With the addition of 480w of solar, it maintains my truck batteries at the same time. When I leave my enclosed trailer connected, the solar also charges my PowerArmor box. The little solar panel on top will stave off parasitic loss, but the camper solar will actually recharge it through the 7-pin.