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Old 04 February 2007, 12:41   #1
Country: UK - England
Town: Calshot
Boat name: Swan Song
Make: LM 27
Length: 8m +
Engine: Bukh 20
Join Date: Feb 2004
Posts: 206
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)
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Old 04 February 2007, 13:40   #2
ashbypower's Avatar
Country: UK - England
Town: Salisbury/Poole
Boat name: Blue C
Make: XS 600
Length: 6m +
Engine: 125hp Opti
MMSI: 235082826/235909566
Join Date: Jan 2004
Posts: 1,439
Same a the replies on YBW there about right


Brian C
Harbour Sea School & APS Marine Centre
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Old 04 February 2007, 16:18   #3
Country: UK - England
Town: Bristol
Make: Ribcraft
Length: 5m +
Engine: Yamaha
Join Date: May 2006
Posts: 4,235
have a look at my last post on the subject, its not too bad really, i found the answer by mistake !!!
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