I have connected my Yamaha F100 with a Garmin echomap 52DV, in the simplest and most economical way possible using only a double NMEA000 bridge, the truth is that it works without problems, in this video you can see the installation process and test of its use.
I imagine that it can be useful for someone who wants to do it
https://youtu.be/iZgFJn12h5A
N.B. It is common to confuse the Yamaha BUS with NMEA2000 although they are similar it does not work, you have to create a new NMEA 2000 mini network for it to work
