Garmin 178 to Cobra 55

[Dino0808]

The cobra manual says to connect to a gps using it's little jack plug.This has 2 wires,1 red and 1 black, they say red goes to nmea + and black to nmea -.
Garmin has dedicated dsc wires but they are labeled nmea in and nmae out.I think this is to connect the plotter to a more expensive dsc unit which will display messages on the plotter screen.I'm certain my cheapo cobra won't do this.
So which wires go where? Do i just connect the 1 red to garmins nmea out and just ignore the black wire. Will this work,please help!

 

[Channel Ribs]

Connect the NMEA + to Garimin DSC Out and The NMEA - to a ground or earth connection. If memory serves.

 

[Dino0808]

Thanks Malthouse, i'll try it.

 

[pvb]

Cobra red wire connects to Garmin green wire. Cobra black wire connects to Garmin black wire. The you need to go into the Garmin's Comms menu and set up Port 2 for "NMEA in/NMEA out".