3 spd wiper issues

So 4 position means 1. Off 2 slow 3 fast 4 variable?
Chk out passon website. Lots of wiper info there.
do you have a link to that website?

As far as a good ground, this video demonstrates this very well

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.youtube.com/watch?v=UmP3SYjdQSQ&ved=0ahUKEwjZl_rw5Y_TAhXLQiYKHaswDqoQwqsBCCowBQ&usg=AFQjCNHqqolYcCpdQhLvMy2ujYmCEf-0gQ

I'll take a closer look thanks all!:thumbsup: