Newmar , wired the windshield wipers to a Freightliner fuse , labeled " Ignition one " as there was no fuse in the F/L box for wipers.
BTW: I've found from other National owners that , my Newmar side rad F/L chassis has completely different fuse boxes from the rear rad chassis . So if you have no power to the wiper switch , test every fuse you can find.
