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I previously had my 1930 radar connected to a Raynav 570 loran. The "ship's own" position displayed correctly at the bottom of the screen. This connection used only the yellow and green wire. The black and white were not connected. I have replaced the Raynav with a Garmin 178c. I have successfully connected to the Icom m602 radio, the position displays on the screen. However, I am unclear how to connect to the Furuno 1930. Do I need all 4 wires? or just 2 like before? Is the Furuno capable of recieving NMEA from the Garmin ? Please advise correct connections.

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  • wellcraft37 Sep 01, 2010

    I have no Furuno blue wire. only black,white yello,green. Do I need all 4? the Loran only used the yellow and green? I know how to configure the Garmin, How do I set the Furuno? RLH.



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All the information needed (color codes for wires) for the Garmin end will be good.On the Furuno end the manual is not good.just shoot an E-Mail to Furuno they would mail they are friendly customer care.For some models the connection may differ.So it is better you mail them and get a copy.

Pin 1 TXD-H White
Pin 2 TXD-C Black
Pin 3 RXD-H Yellow
Pin 4 RXD-C Green

Only two wires from each device required.
So following this scheme, NMEA OUT would be White(+) and Black(-), NMEA input Yellow receive(+) and Green(-)
you should hook the Furuno's NMEA transmit to Garmin's NMEA receive.

You have to contact Furuno for the colour coding of the Furuno cable.
NMEA out from the GPS and NMEA in to the other device. The Garmin then has a I/O screen for setting the NMEA output and the Furuno requires configuration settings as well.

Furuno************* Garmin
TX+*(white)****** RX+
TX-**(black)****** your boat's DC ground (same ground used by the Garmin)

Furuno White to Garmin Brown
Furuno Blue to Nothing
Furuno Yellow to Garmin Blue
Furuno Green to Ground

1-White wire (transmit data+ or/receive+)
2-Blue wire (transmit data- or/receive-)
3-Yellow wire (receive data+)
4-Green wire (receive data-)
5-Red wire (+12VDC out)
6-Black wire (-12VDC out)
7-Bare wire (Grounding wire)

Thank you for using fixya have a nice day:-)

Posted on Sep 01, 2010

  • Natarajan Ramasamy
    Natarajan Ramasamy Sep 01, 2010

    sorry its funro black in your case...



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