NMEA 2000 Connections

NOTICE

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.

NOTICE

If you are connecting to an existing NMEA 2000 network, identify the NMEA 2000 power cable. Only one NMEA 2000 power cable is required for the NMEA 2000 network to operate properly.

A NMEA 2000 Power Isolator (010-11580-00) should be used in installations where the existing NMEA 2000 network manufacturer is unknown.

This device is not powered through the NMEA 2000 network. You must connect the device to a power source (Connecting the Device to Power).

If you are unfamiliar with NMEA 2000, you should read the Technical Reference for NMEA 2000 Products at garmin.com/manuals/nmea_2000.


Wiring diagram with callouts

Item

Description

1

Compatible NMEA 2000 chartplotter or other device

2

Garmin AIS™ 800 device

3

Ignition or in-line switch

4

NMEA 2000 power cable

5

NMEA 2000 drop cable

6

Garmin AIS 800 device power connection (Connecting the Device to Power)

7

12 Vdc power source

8

NMEA 2000 terminator or backbone cable

9

NMEA 2000 T-connector

10

NMEA 2000 terminator or backbone cable

GUID-61A42529-ECEC-4B79-9F77-A5D87D90A579 v8
December 2025