I would say it is most likely the smart wheel. I had a similar problem, the wipers wouldn't work when I wanted them to and sometimes they would just come on by them self. it could be the clock spring in the steering wheel or the controller under your dash. If you take the plastic covers off the steering column there are a few plugs there that can come loose.
Dennis & Marcie & Captain Hook The Jack Russell,aka PUP, 1998 HR Imperial 40 ft 2017 Equinox, 2010 Ram 1500 toads RVM59
A good day on the road means a restful night at the park!