Was trying to get my '39 wiper motor to work. I took it out off the car and tried to bump with 6 volts. It moved just a bit but didn't keep goin. I didn't want to fry the motor so I just quit on it. I don't have any wiring diagram or schematics. I'm sure that one of the three wires to the motor is for the return but I don't know what wire is for what. And the braided cloth wires are bleached out from 70 plus years so i can't see the colors of the wires. Any ideas Mopar guys and girls? Thanks, Casey