I recently purchased a Lowrance Live MFD. I have connected my Yamaha engine info to the MFD through my NMEA 2000. I connected the two with a cable from the Yamaha gauge bus at the helm to the NMEA 2000 . On selecting engine info screen I cannot get any gauges showing engine info rpm, oil press. etc. The gauge choices info do not come up on the screen as they should. Not sure now how to access them. I have isolated the the cable from the gauges to NMEA 2000 as both NMEA and the Yamaha gauges have there own 12V power. When not isolated the power goes to the ignition and Yamaha gauges on the turn of the battery switch, rather than ignition switch.......crap, I hope I have not confused the issue with my dragged out explanation. Anyway if this is understood and someone has done this I would appreciate very much some understanding.