RE: 93 dodge dakota windshield wipers
expose the motor and disconnect the wiring harness and use a voltage tester. you should find 4 wires. hi speed, lo speed, park circuit, and ground. you're looking for 12 volts on either hi or lo depending on where the switch is set. 12 volt on park circuit whenever on low or high (- this is what makes the wipers stop at the bottom of the windshield instead of random whereever). also must have good ground (if ground wire is included) if wiring reads differently than this, its a switch, fuse, relay or wiring problem. if wiring matches this - then its motor.