2 speed wiper testing/ home position??/

Just hooked up my wiper linkage to my cleaned up wiper motor, arms are about all the way to the left side ( looking from the drivers seat) is there a way I can test them to see if they will park at the home position? My dash is out and engine harness is apart. Can I use my battery to ground one attachment stud and with the wiper wiring harness hooked up tap 12v to one of the connectors? Looks like dark green or blue would be low or high speed ??! Thanks