of instuments: basic ST60 depth and speed, a Furuno GPS and Standard Horizon CP180 as well as an old Raytheon RX10 Radar. All work just fine but aren't NMEA2000. The D+S could connect to Raymarine with Seatalk. The GPS use the old standard and connect to most anything I believe with the correct adapters. Complete integration is not as important to me as strong and reliable. My boat balances quite well with the Monitor despite some issues created by the wheel's gearing so I'm hoping the AP will work well. I appreciate the insight, David