Originally Posted by
sliderman
The OP is describing the old style circuit that omc used for several years. It uses a single solenoid on the up circuit that is located in a plastic box mounted in the bilge area. (The solenoid resembles an old ford firewall mounted starting solenoid.) It has no slave circuit for "down" operation. I would trace the wires from the motor back to the plastic box. From there, you will have a positive and negative cable going over to a battery. Check battery voltage. You should also find an inline fuse somewhere on the positive cable. Make sure cable connections are good. You can apply positive side power to the up circuit at the solenoid with a jumper to test the motor. Based upon the age of the system, I would expect the motor brushes to be worn out. But corrosion of the wiring system may be the culprit. (You "might" get it to operate by tapping the top of the motor with a metal object while applying power if the brushes are stuck. But tap only the top and don't get to aggressive with it.)