Volvo wiper motor wiring....Need assistance.
 

Hey guys, I picked up a 98-04 Volvo 70 series wiper motor. I'm trying to figure out how to wire this thing. It has five wires; yellow, yellow w/purple, grey w/black, green and blue. I have figured out if I connect the battery + to the grey wire and the - to the blue wire it is slow speed. If I switch the - to the yellow its high speed. As you'll see in the photo I have the + connected to the yellow and it spins one direction fast and when I change the + to the blue it reverses direction and goes really fast. So I know that's wrong.

My main issue is I can't figure out what the green and yellow w/purple are for. I'm assuming this will have a park function but not sure how to wire for it. Any help would be greatly appreciated. I'm attaching a photo for reference. Btw, this is going into a 69 Camaro with an LS Swap and a AAW Classic Update Series wiring kit.

Thanks in advance.