I am a fairly new boater and trying to understand something. I have a 1990 Mercruiser 454 mag 7.4l engine with a bravo 3 outdrive. I just purchased a Raymarine A50 D gps/fishfinder. It has a digital instrumentation (fuel gauge, tach, speed, ect...)option available on the unit. My question is... How do I get it all to work. I know it says its for NMEA 2000 . What does that mean exactly? Can I get it to work with my boat? What do I need? Thanks for any help!
