Garmin 178 to cobra 55
Does anyone know the correct nmea connection for these sets? I'm a little confused because the garmin has dedicated nmea in and out for a dsc set.
The cobra has a funny little jack with 1 red and 1 black.They say to connect red to nmea positive plotter,black to nmea negative plotter.
I'm sure looking at Garmins wiring diagram that both the dsc nmea's are positive and are wired for a more expensive dsc so it will show info from the dsc on the plotter screen,as they describe nmea in and nmea out and both are showing a little + sign on the diagram.The cheap old cobra probably doesn't do that so heeelp! What wire goes where?
About 1.5 litres per hour (slower but easier on the pocket)