"dollieon".....Before you go too crazy changing things, first try lubing the mechanism. Your wiper motor is attached to a couple of long arms with several pivot points under the front of your coach. It's a location that is dry and can be dirty. So before you take any other steps, lift the hood and spray the heck out of all the pivot points. If you're wipers don't work after doing that, then pursue other repairs.
Don & Mary
2019 Newmar Dutch Star 4018 - All Electric
2019 Ford Raptor Crew Cab