Sooo do you think it could be a wiper motor and the other wires are for parking it or something? What are the odds that the FS in the part number means it is a F@&d part? When it quits snowing I will see what happens when I connect green to yellow and/or I juice the yellow wire with the motor already running. Isn't green usually a universal indication of a ground wire? The black wire is pre-made with an eyelet for ground to the housing.