Lots of back and forth with Yacht Devices resulted in finding an RPM only J1939 stream used for RPM sync.
Eventually I ordered a Yacht Devices YDEG-04 (also a J1939 to NMEA 2000 converter) because I read of success with older Volvo-Penta engines. My first try was a Maretron J2K100, an excellent J1939 converter, but I couldn’t get any data out of it. Research at that time suggested the engines likely communicated using J1939. When I bought Have Another Day one of my first projects was to connect her 2002 era Volvo-Penta D12 EDC engines to a NMEA 2000 network. My displays exhibited both problems and after spending several boat units repairing them I decided to redouble my efforts to find a workable NMEA 2000 option. As they get older the displays tend to become heat sensitive - turning off in direct sunlight isn’t an attractive habit for engine displays - and the displays develop dark spots making them very hard to read. The monochrome 4″ electronic engine displays that came on board Have Another Day only display a few pieces of data at a time and don’t age well. Have Another Day came equipped with Volvo-Penta electronic displays My path to getting that data wasn’t easy but I think I helped blaze a trail to easy engine data on your NMEA 2000 network. I’ve had access to this data previously and knew the value of the data for fuel management and engine monitoring. When I bought Have Another Day I really wanted the data from my early electronically controlled diesel engines available on my MFDs.
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