GMI 10 Installation Instructions
Connecting the GMI 10 through NMEA 0183
The GMI 10 can receive NMEA 0183 data from one device. The GMI 10 displays the received data, but cannot transmit
the data to another NMEA 0183 device or transmit the data to a NMEA 2000 network.
Use the diagrams to wire a NMEA 0183 device to your GMI 10. Use 22 AWG, shielded, twisted-pair wiring for
extended runs of wire. Solder all connections and seal them with heat-shrink tubing.
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GMI 10
Device
Color
Function
Accessory On(+)
Rx/A(+)
Rx/B(-)
Black
Yellow
Brown
Green
GMI 10 Data Cable
Tx/A(+)
Blue
White
Tx/B(-)
Accessory Off(-)
+
-
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RED
BLACK
BROWN
GREEN
WIRE
COLOR
GMI 10
Device
Battery
12 Vdc
Fuse
1 A
BLUE
WHITE
YELLOW
RED
BLACK
GRAY
WHITE/
RED
WIRE
COLOR
WHITE
WHITE/
ORANGE
ORANGE
GPS 17/17x
NMEA 0183
HVS Antenna
Wiring the GMI 10 to a GPS 17x NMEA 0183 HVS Antenna
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BROWN
GREEN
WIRE
COLOR
WIRE
FUNCTION
POWER
POWER GND
Tx/A (+)
Tx/B (-)
NMEA 0183
Compliant Device
GMI 10
Device
Battery
12 Vdc
Wiring the GMI 10 to a Standard NMEA 0183 Device
Notes:
Consult the instructions for your NMEA 0183-compliant device to identify the Tx/A(+) and Tx/ B(-) wires.
When connecting NMEA 0183 devices with two transmitting and two receiving lines, it is not necessary for the
NMEA 2000 bus and the NMEA 0183 device to connect to a common ground.
The yellow (accessory on) wire and the black (accessory ground) wire are used only when wiring the GMI 10 to a
Garmin GPS 17/17x antenna.
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