Bought a troller for a hell of a deal off Craigslist because it doesn't run, it's a minn Kota 55lb power drive with copilot installed. The unit will rotate to change steering directions and the only problem is that the prop doesn't spin, any ideas? Entire lower unit looks like it's brand spanking new, however, in the unit the board has 1 wire with a connector but no other wire to connect it to, I can post pics up of it but basically I'm stumped, thought when I saw the ad I should be a fairly easy fix, the guy just didn't want to deal with it. It's for on my fishing boat. Ideas anyone?