NMEA 2000 Connections


If you are installing a NMEA 2000® power cable, you must connect it to the boat ignition switch or through another in-line switch. NMEA 2000 devices will drain your battery if the NMEA 2000 power cable is connected to the battery directly.

If you are unfamiliar with NMEA 2000, you should read the “NMEA 2000 Network Fundamentals” chapter of the Technical Reference for NMEA 2000 Products. Go to garmin.com/manuals/nmea_2000.

Wiring diagram with callouts



Callout number one

Compatible NMEA 2000 chartplotter or other device

Callout number two

VHF 115/VHF 215/VHF 215 AIS device

Callout number three

Ignition or in-line switch

Callout number four

NMEA 2000 power cable

Callout number five

NMEA 2000 drop cable

Callout number six

12 Vdc power source

Callout number seven

NMEA 2000 terminator or backbone cable

Callout number eight

NMEA 2000 T-connector

Callout number nine

NMEA 2000 terminator or backbone cable

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