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Item
Garmin Wire
Function
Garmin Wire
Color
NMEA 0183
Device Wire
Function
Rx/A (In +)
White/orange
Tx/A (Out +)
Rx/B (In -)
White
Tx/B (Out -)
Tx/A (Out +)
Gray
Rx/A (In +)
Tx/B (Out -)
Pink
Rx/B (In -)
If the NMEA 0183 device has only one input (receive, Rx) wire
(no A, B, +, or -), you must leave the pink wire unconnected.
If the NMEA 0183 device has only one output (transmit, Tx) wire
(no A, B, +, or -), you must connect the white/orange wire to
ground.
NMEA 0183 with Audio Cable Pinout
The NMEA 0183 with audio cable includes bare wires and an
RCA connector for an audio out connection to a stereo,
including Fusion
®
stereos. This optional cable (010-12390-21)
can be purchased from
or your local Garmin
dealer.
After installing, you can connect the RCA connector to the AUX
input of the stereo, so the chartplotter's HDMI input is output to
the stereo.
This pinout information is for the NMEA 0183 with audio cable.
Port
Wire Function
Wire Color
Pin Number
Input port 1
Rx/A (In +)
White
Input port 1
Rx/B (In -)
White/orange
Output port 1
Tx/A (Out +)
Gray
Output port 1
Tx/B (Out -)
Pink
Input port 2
Rx/A (In +)
Brown
Input port 2
Rx/B (In -)
White/brown
Output port 2
Tx/A (Out +)
Blue
Output port 2
Tx/B (Out -)
White/blue
Input port 3
Rx/A (In +)
Violet
Input port 3
Rx/B (In -)
White/violet
Input port 4
Rx/A (In +)
White/black
Input port 4
Rx/B (In -)
Red/white
N/A
Audio Common
Blue/red
N/A
Audio Right Channel
Red
N/A
Audio Left Channel
White
N/A
Alarm
Yellow
N/A
Accessory on
Orange
N/A
Ground (shield)
Black
N/A
Spare
N/A
Lamp or Horn Connections
The device can be used with a lamp, a horn, or both, to sound or
flash an alert when the chartplotter displays a message. This is
optional, and the alarm wire is not necessary for the device to
function normally. When connecting the device to a lamp or
horn, observe these considerations.
• The alarm circuit switches to a low-voltage state when the
alarm sounds.
• The maximum current is 100 mA, and a relay is needed to
limit the current from the chartplotter to 100 mA.
• To toggle visual and audible alerts manually, you can install
single-pole, single-throw switches.
Item Description
Power source
Power cable
Horn
Lamp
NMEA 0183 cable
Relay (100 mA coil current)
Toggle switches to enable and disable lamp or horn alerts
Item
Wire Color
Wire Function
Red
Power
Black
Ground
Yellow
Alarm
J1939 Engine Network Connection Considerations
NOTICE
You must use a Garmin GPSMAP J1939 accessory cable when
connecting the chartplotter to the J1939 engine network to
prevent corrosion due to moisture. Using a different cable voids
your warranty.
If you have an existing engine network on your boat, it should
already be connected to power. Do not add any additional power
supply.
This chartplotter can connect to an engine network on your boat
to read data from compatible devices such as certain engines.
The engine network follows a standard and uses proprietary
messages.
You should connect only one chartplotter to one engine network.
Connecting more than one chartplotter to one engine network
may result in unexpected behavior.
The port labeled ENGINE/J1939 is used to connect the device
to the existing engine network. You must route the cable within
6 m (20 ft.) of the engine network backbone.
The Garmin GPSMAP J1939 accessory cable requires
connection to a power source and proper termination. For more
information on connecting to your engine network, see the
manufacturer's engine documentation.
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