Usually there is a tilt switch on the motor and the throttle. If you have tried both then it is probably a relay. If it is a relay it should only fail to work in one direction, ie. Always goes UP but problem going DOWN. If you can open the relay you may be able to repair it, sometimes just burnish the contacts. Should not be super expensive to repair. You may be able to get a used relay at boat salvage yard or wire in an alternative from Radio Shak. If you want to discuss call me.home 5123827618cell 5123428002