Antenna

On my 345 there are two GPS antennae - one for the V50 AIS and one for the Zeus MFD.  If you access the system menu on the Zeus and looks for the network device list you will find all of the devices detected on your system.

No - you select which of the two GPS sources you will use for the AP in the same Network Devices menu.

If I'm interpreting your picture correctly, the round dome should say "BT-1" which is the bluetooth receiver for the WR10 remote controller you included as a picture.  I recently purchased a WR10 and paired it to the existing BT-1 base.  At first, I thought I need to isolate the BT-1 from the NMEA2000 network while everything else was on since the instructions made a big deal about disconnecting the BT-1.  It was going to be trouble getting to where it was connected to the backbone.  Instead, I turned off the whole NMEA network and then powered it back up.  When it powers on, that puts the base station into "discovery" mode, where you then follow the very brief & simple procedure for pairing with your WR10 remote.

On our 2013 Hanse, starboard side is an Navico NMEA2000 GPS feeding data directly into NMEA2000 backbone and the port-side one is an active GPS antenna with thin coaxial cable to AIS. AIS usually has a separate GPS antenna independent of everything else. Autopilot takes any data it requires from NMEA2000. That's our systems as fitted at factory. Don't know if that helps!

Edited by Ian Coverdale - 30 March 2023 at 18:23