UPDATE:
Received a call from Garmin hotline:
When connecting AIS-800 to chart plotter by NMEA0183:
Only the power/data cable is needed. Due to change of colouring of the data wires, the WHITE goes to (-).
The Silent-mode is GREEN.
Now we know.
Thanks for comments
I am referring to the NMEA2000 power cable
https://www.waveinn.com/maritim-fiskeri/garmin-nmea-2000-power/132579/p?utm_source=google_products&utm_medium=merchant&id_producte=525773&country=dk&gclid=EAIaIQobChMIhLiblfLv4AIVU-d3Ch3JVQJQEAQYBSABEgK-BPD_BwE&gclsrc=aw.ds
Just bought a Garmin AIS-800 and has it connected to a Furuno GP7000 chart plotter by NMEA 0183. In order to make that work, I need to power up the NMEA2000-system, although I am not using the NMEA2000. Strange, but so it is.
Is it possible to connect the yellow power cable for the NMEA2000...