Garmin GHP 12 Autopilot System Installation Instructions Manual page 22

Example two of three - only one Receiving Wire
If your NMEA 0183-compatible device has only one receiving wire
(Rx), connect it to the blue wire (Tx/A) from the GHC 10, and leave the
white wire (Tx/B) from the GHC 10 unconnected.
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➊
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GHC 10
➊
NMEA 2000 network (provides power to the GHC 10)
➋
12 Vdc power source
➌
NMEA 0183-compatible device
➍
Wire GHC 10 Wire
Color - Function
N/A
➊
N/A
➋
Blue - Tx/A (+)
➌
White - unconnected
➍
Brown - Rx/A (+)
➎
Green - Rx/B (-)
➏
NOTE: When connecting a NMEA 0183 device with only one
receiving (Rx) line, the NMEA 2000 bus and the NMEA 0183 device
must be connected to a common ground.
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+
➌
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➌
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nMEa 0183-Compatible
Device Wire Function
Power
NMEA 0183 ground
Rx
N/A
Tx/A (+)
Tx/B (-)
Example three of three - only one transmitting Wire
If your NMEA 0183-compatible device has only one transmitting
wire (Tx), connect it to the brown wire (Rx/A) from the GHC 10, and
connect the green wire (Rx/B) from the GHC 10 to NMEA ground.
➊
➍
GHC 10
➊
NMEA 2000 network (provides power to the GHC 10)
➋
12 Vdc power source
➌
NMEA 0183-compatible device
➍
Wire GHC 10 Wire
Color - Function
N/A
➊
Green - Rx/B - connect
➋
to NMEA 0183 ground
Blue - Tx/A (+)
➌
White - Tx/B (-)
➍
Brown - Rx/A (+)
➎
NOTE: When connecting a NMEA 0183 device with only one
transmitting (Tx) line, the NMEA 2000 bus and the NMEA 0183 device
must be connected to a common ground.
➋
-
+
➌
➋
➌
>
> ➍
>
➎
nMEa 0183-Compatible
Device Wire Function
Power
NMEA 0183 ground
Rx/A (+)
Rx/B (-)
Tx/A (+)
GHP 12 Installation Instructions
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