[Uhehner]

You need a good tech to install an autopilot, especially if you interface it with your GPS. The compass location is critical. Have a quick magnetic survey done and try to locate it down low and back aft away from the engines and any magnetic source such as a speaker. Also have a main power disconnect switch installed next to the display so you can quickly shut the AP down in the event of a failure. Mount the AP motor in a dry location away from the compass. Furuno would be my first choice, it's a high quality unit with lots of trolling pattern features. Do all the dockside checks before getting underway.  Capt. George