NMEA 0183 Device Connections

This diagram illustrates two-way connections for both sending and receiving data. You can also use this diagram for one-way communication. To receive information from a NMEA® 0183 device, refer to items Callout number one, Callout number two, Callout number three, and Callout number four when connecting the Garmin® device. To transmit information to a NMEA 0183 device, refer to items Callout number one, Callout number two, Callout number five, and Callout number six when connecting the Garmin device.


Wiring diagram with callouts

Item

Description

Callout number one

Power source

Callout number two

Power/NMEA 0183 cable

Callout number three

NMEA 0183 device

Item

Garmin Wire Function

Garmin Wire Color

NMEA 0183 Device Wire Function

Callout number one

Power

Red

Power

Callout number two

Power ground

Black

Power ground

Callout number three

Not applicable

Not applicable

Data ground

Callout number four

RXA

Brown

TXA

Callout number five

RXB

Violet

TXB

Callout number six

TXA

Blue

RXA

Callout number seven

TXB

Gray

RXB

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