Something to think about with these exposed switches. How about fabricating a weatherproof switch box. Put normal rocker switches in the weatherproof box and mount the box on the outside of the trailer.
Or, using the same weather box and switches add a pigtail. You'll need a weatherproof receptacle to plug the switch box into. Once level and happy simply unplug the pigtail box and stow. The switches are out of the weather, no box mounted on the rig and the receptacle is closed and kept dry.
Obviously the manufacturer's engineers don't use these things (like most engineers), so you'll need to do their thinking for them.
2013 Voltage 3800, 2012 Chevy 3500 HD
2010 Yamaha V Star 950
2009 Yamaha Raider
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