I have a 76 rude 70 hp. I am installing a hydraulic tilt unit on it. All i have is the pump and bracket that fits on the motor mounting bolts. It has a 12-3 so type cord coming out of it. Is there supposed to be a reversing sylenoid setup running these wires via a 2 position momentary on the dash? What are the wires? Can someone color id them for me? Thanks.