Wiring up a 2 speed wiper switch with Painless

Well you have to have both switched power and "always on". The always on is for the parking circuit, the switched power runs the "normal" operation. Download a service manual for closest year you can find you yours and look over not only the diagrams, but read the section 8 section on wipers. What you might do is when you think you have it figured, "mock" it up and get it to work, then put into the car harness

You have to have the correct switch, IE 2 speed for 2, 3 speed for 3, etc I believe the 2 speed motor is also used for the variable speed switch (just "off" detent, then "smooth" turning to adjust speed