I do have a couple of remaining questions though that are still haunting me. I am helping a friend with a small craft (center console fishing boat) that has an existing Garmin chartplotter (GPS4210) and we are adding a new chartplotter (Garmin 94sv) (in addition to the original one) and a new VHF radio (Icom M330). The original Garmin is using an NMEA-2000 network connection to interface to either the radar or transducer. (I don't remember offhand which was the second networked device). He was told by Garmin a couple of times, that the older unit (4210) would not interface to the new one (94sv) (I think primarily due to the age of the older Garmin and its associated radar dome). The new Garmin does have both NMEA-0183 and NMEA-2000 capabilities, and the ICOM VHR has NMEA0-183 interconnectivity.
We are planning to use the NMEA-0183 to tie the new Garmin 94 to the new ICOM M300 to enable the GPS to share location information with the radio. That seems simple enough and thanks to the resources here, I think I know how to wire that up, which brings me to my real question.
Is it possible to use both NMEA-0183 and NMEA200 on the new Garmin 94?
If we use the NMEA-0183 to connect the GPS and radio, is there any benefit, or is it even possible to connect the Garmin 94 to the NMEA-2000 network?
Would the Garmin 94 and the older Garmin 4210 be able to share any beneficial information?
I do understand what is needed if we were to tie the Garmin 94 into the existing NMEA-200 network as far as hardware is concerned, that part is simple.
As for my wiring, here is what I propose to interface the Icom to the Garmin 94..
ICOM Radio <--> GARMIN Chartplotter
WHITE (Talker A) ---> (Listener A) BROWN
BROWN (Talker B) ---> Not connected
GREEN (Listener B) <--- Ground or 12 Volt negative
YELLOW (Listener A) <--- (Talker A) BLUE
Thanks in advance for any guidance and suggestions.