[Wavery]

Just be aware that after you remove the screws in the wall, it will take some effort to pull the converter straight out then to the left. There are a lot of stiff wires back there and it's a jungle of wire back there. Not a lot of room to work. Just take your time and carefully move the wires that are in your way. It will take some patience to get that box out enough to work in there. Just work it out easily.

Be sure to disconnect your negative battery cable (that will completely and safely delete any battery involvement) and be sure that the trailer isn't plugged in to 110V.

I ran my black tank washout through the outside shower and down through the floor. It was EZ. Just be sure to use some chafe protection for that plastic hose. I used a 4" piece of 3/4" PVC pipe.