Center of Rotation
Bert, the best location is at the center of rotation of the boat and away from things that can affect the earths magnetic field. This is typically in the middle area of the boat and a couple of feet above the water line. Mine is in the cabinet behind the galley sinks. It comes with plenty of cable. When you get the instructions you will find that there is a self calibration procedure that you follow. You might try a few locations with temporary attachment(duct tape) to find one that is most satisfactory. Be sure to get a good source of power for the control unit, even small motors don't like voltage drop. I ran the drive motor wiring through the pedistal along with the control cables through the stbd locker to the control head. Good luck and if you have any questions just ask.Frank