The below has some wiper motor wiring info.*youtube*
Stuff to look at. You might ask the source of the wiper motor what car it came out of. The short circuit wires might be across an internal limit switch when it is closedhttps://www.google.com/search?q=Windshield+Wiper+Motor+Wiring&num=100&hl=en&lr=&tbo=u&as_qdr=all&tbm=isch&source=univ&sa=X&ei=1NauUKT0IcPf0gHG8oCABQ&ved=0CIcBELAE&biw=1201&bih=641
But given the characteristics of it what I wrote in the first post, would the diode setup work?
Sounds to me like you have a window motor not a wiper motor. Window motors have gears on them wiper motors don't have any that you can see.
I found this diode, what do you all think?http://www.produktinfo.conrad.com/datenblaetter/150000-174999/160744-da-01-en-SCHOTTKY_DIODE_DSS25_0025B_TO_220_AC.pdf(no, I won't forgetting cooling of it)