Cable to connect to the Nmea2000 backbone

Discussion and support for the N2K0183 gateway between the Nmea2000 bus and Nmea0183 devices. This is a multiplexer with WiFi, 2 input and 1 output Nmea 0183 ports and bidirectional Nmea2000 communications.
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Luis Sa
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Cable to connect to the Nmea2000 backbone

Post by Luis Sa » Mon Jan 15, 2024 2:14 pm


I stock a cable terminated by the a M12 male connector that can be used to connect the N2K0183 multiplexer to a NMEA2000 backbone. The cable is 1 meter long and is not shielded. However due to its relative short length it will work perfectly in a NMEA2000 system.


In this post I explain how you should prepare the cable to connect the N2K0183 multiplexer. You need to strip off 2 or 3 cm of the plastic sleeve to isolate the 5 wires. It is advisable (but not necessary) to melt solder over the copper wires and bend them as shown:




Note that the brown wire is not necessary (it corresponds to the shield) and is cut down. The colors of the wires do not follow the NMEA2000 standard and you should connect them to the N2K0183 screw connectors as follows:

  • White wire goes to the 12V screw terminal
  • Blue wire goes to the GND screw terminal
  • Gray wire goes to the LOW Can Bus screw terminal
  • Black wire goes to the HIGH Can Bus screw terminal

as shown in the next picture:


Regards, Luis

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Joined: Mon Jan 04, 2021 4:37 pm

Re: Cable to connect to the Nmea2000 backbone

Post by Sailabout » Sat Feb 24, 2024 7:32 am

I plan to connect my N2K0183 to a single NMEA2000 unit (my plotter) Could I connect them together directly with a single cable or do I need to connect them through a backbone with T’s and terminal resistors?

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