I have an extra Maretron J2K100 engine data converter that I would like to sell. It converts the engine data from electronically controlled diesel engines to NMEA 2000 where it can then be displayed on a wide variety of chart plotters and other monitoring displays. More precisely, it converts engine data from SAE J1939 to NMEA 2000. SAE J1939 is the standard used in electronically controlled diesels. Note that this will NOT work with older mechanically injected engines. Here is a link to Maretron's info page on the device Maretron | J2K100
I was using this for my transmission temp and pressure, but the sensors on the gear itself keep breaking so I have taken a different approach to monitoring that data. It works fine, but has been in service for about 18 months.
On-line pricing is about $330. Asking $200