If I find out , I'll post it here.
Your NMEA2000>NMEA0183 converter interests me.
Does it know anything about Autopilot PGNs?
I have a rather hybrid boat set up. Originally B&G H3000 fastnet network- which still works OK. I use a proprietary B&G device to communicate fastnet with N2K. (H5000 converter). That works well but is ONE WAY. The autopilot function is still fastnet only. The H3000 cpu does have NMEA0183 inputs and B&G "think" it may accept NMEA 0183 steering commands. If I can get my B&G plotter N2K steering commands translated to NMEA2K then I could be in luck. Any clues would be appreciated. (no commercial purpose- own boat only)