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Pin Number
Wire Function
Ground (shield)
VIN
Lamp and 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 1 A, and a relay is needed to limit
the current from the chartplotter to 1 A.
• To manually toggle visual and audible alerts, you can install
single-pole, single-throw switches.
Item Description
Power source
Power cable
Horn
Lamp
Relay (1 A coil current)
Toggle switches to enable and disable lamp or horn alerts
Item
Wire Color
Red
Black
Yellow
J1939 Engine Network Connection Considerations
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 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
Wire Color
Black
Red
Wire Function
Power
Ground
Alarm
NOTICE
information on connecting to your engine network, see the
manufacturer's engine documentation.
Pin
Wire Color
Bare
Red
Black
White
Blue
Composite Video Considerations
This chartplotter allows video input from composite video
sources using the port labeled CVBS IN. When connecting
composite video, you should observe these considerations.
• The CVBS IN port uses a BNC connector. You can use a
BNC to RCA adapter to connect a composite-video source
with RCA connectors to the CVBS IN port.
• Video is shared across the Garmin Marine Network, but it is
not shared across the NMEA 2000 network.
Specifications
All Models
Temperature range
From -15° to 55°C (from 5° to 131°F)
Material
Polycarbonate plastic and die-cast
aluminum
Water rating
IEC 60529 IPX7
Input voltage
From 10 to 32 Vdc
Fuse
6 A, 125 V fast-acting
NMEA 2000 LEN @ 9 Vdc 2
NMEA 2000 draw
75 mA max.
Wireless frequency
2.4 GHz @ 17.6 dBm nominal
GPSMAP 7x2 Plus
Dimensions (W × H × D)
Display size (W × H)
Weight
Compass-safe distance
Max. power usage at 10 Vdc
Typical current draw at 12 Vdc 1.5 A
Max. current draw at 12 Vdc
Memory card
GPSMAP 9x2 Plus
Dimensions (W × H × D)
Display size (W × H)
Weight
Compass-safe distance
1
The device withstands incidental exposure to water of up to 1 m for up to 30 min.
For more information, go to www.garmin.com/waterrating.
Description
Shield
Power, positive
Power, negative
CAN High
CAN Low
1
22.4 × 14.3 × 5.4 cm (8.8 × 5.6 ×
2.1 in.)
15.4 × 8.6 cm (6.1 × 3.4 in.)
7.0 in. diagonal
0.86 kg (1.9 lb.)
71 cm (28 in.)
24 W
2.0 A
2 microSD
®
card slots; 32 GB max. card
size
2.56 × 16.2 × 5.2 cm (10.1 × 6.4 ×
2.1 in.)
19.7 × 11.4 cm (7.7 × 4.5 in.)
9.0 in. diagonal
1.27 kg (2.8 lb.)
76 cm (30 in.)
5
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