Good afternoon Lionheart,
The when there is a mixed product installation, like the one you have, that has both the TZT and MFD8 (nn3d) the TZT should not be connected to NMEA2000, only the MFD8 should be connected to the NMEA2000 bus.
Please see the link below that will take you to a TZT installation check list. Please reference the chapter that explains TZT and NN3D mixed installation (starts on Page 5)
https://www.furunousa.com/-/media/s...als/navnet_tztouch_installation_checklist.pdf
Kind Regards,
C-Bass
The when there is a mixed product installation, like the one you have, that has both the TZT and MFD8 (nn3d) the TZT should not be connected to NMEA2000, only the MFD8 should be connected to the NMEA2000 bus.
Please see the link below that will take you to a TZT installation check list. Please reference the chapter that explains TZT and NN3D mixed installation (starts on Page 5)
https://www.furunousa.com/-/media/s...als/navnet_tztouch_installation_checklist.pdf
Kind Regards,
C-Bass