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Marine Electronics

Section - how can I connect a west marine vhf580 radio to a garmin 740s chartplotter...
   
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  1. #1
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    Default wire diagram

    how can I connect a west marine vhf580 radio to a garmin 740s chartplotter

  2. #2
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    There will be three wires involved in making it so. A NMEA 0183 ground, NMEA 0183 out, and NMEA 0183 in.

    Basically you hook the NMEA 0183 ground wires from the 740s and the VHF together.
    -On your Garmin it is the same as the power ground wire. I'm not sure about your radio (check the install instructions)

    The NMEA 0183 out wire on the chartplotter (blue on the 740s) to the NMEA 0183 in wire on your radio.

    The NMEA 0183 in wire on the chartplotter (brown on the 740s) to the NMEA 0183 out wire on your radio

  3. #3
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    thank you for the help.I am still trying to get it to work.

  4. #4
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    Funny thing is that right now I’m hooking up my Standard Horizon VHF to a Garmin 820 chartplotter and finding the same thing. I double and triple checked my connections then read more in my VHF manual. It seems you have to enable the network in the chartplotter settings to set it up.

    On my Garmin 820 from the main screen,

    Settings>Communications

    I changed Serial Port 1 from Garmin to NMEA Standard

    The GPS info immediately displayed on my VHF.
    TimG likes this.

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