Garmin GHP 12 Autopilot System Installation Instructions Manual

Also see for GHP 12: Reference guide

Garmin GHP 12 Autopilot System Installation Instructions Manual Manual pdf 14 page image

14 GHP 12 Installation InstructionsConnecting optional Devices to the GHP 12autopilot SystemTo use advanced features of the GHP 12, optional NMEA2000-compatible or NMEA 0183-compatible devices, such as a windsensor, a water-speed sensor, or a GPS device, can be connected to theNMEA 2000 network or to the GHC 10 through NMEA 0183.Connecting an optional nMEa 2000-compatible Device tothe GHP 121. Add an additional T-connector (not included) to the NMEA 2000network.2. Connect the device to the T-connector by following the instructionsprovided with the device.nMEa 0183 Connection Considerations• To identify the Transfer (Tx) A(+) and B(-) wires for your NMEA0183-compatible device, consult the installation instructions foryour device.• When connecting NMEA 0183 devices with two transmitting andtwo receiving lines, it is not necessary for the NMEA 2000 bus andthe NMEA 0183 device to connect to a common ground.• When connecting a NMEA 0183 device with only one transmitting(Tx) line or with only one receiving (Rx) line, the NMEA 2000bus and the NMEA 0183 device must be connected to a commonground.Connecting an optional nMEa 0183-compatible Device tothe GHC 101. Determine the NMEA 0183 wiring assignments of your NMEA0183-compatible device.2. Refer to the table below to wire your NMEA 0183-compatibledevice to the GHC 10.GHC 10 Data CableWire ColorFunctionBlack CCU signal groundYellow CCU signalBlue Tx/A (+)White Tx/B (-)Brown Rx/A (+)Green Rx/B (-)Three examples of various wiring situations are provided in theappendix (page 21).3. If necessary, use 22 AWG (.33 mm2 ) twisted-pair wire for extendedruns of wire.4. Solder and cover all bare-wire connections.Shadow Drive InstallationThe Shadow Drive (optional accessory) is a sensor you install in thehydraulic steering lines of your boat. The Shadow Drive can only beused on a boat with a hydraulic steering system.To install the Shadow Drive, connect it to the hydraulic steering line ofyour boat and connect it to the CCU/ECU interconnect cable.Connecting the Shadow Drive to the HydraulicsBefore you can install the Shadow Drive, you must select a location atwhich to connect the Shadow Drive to the hydraulic steering of yourboat, after you have read and followed the mounting and connectionconsiderations (page 6).Use the connectors included with the Shadow Drive to install theShadow Drive in the hydraulic line.Connecting the Shadow DriveWhen connecting the Shadow Drive to the hydraulic system, follow theimportant considerations (page 6).To connect the Shadow Drive, connect it to the CCU/ECU interconnectcable.1. Route the bare-wire end of the CCU/ECU interconnect cable to theShadow Drive.If the cable is not long enough, extend the appropriate wires with 28AWG wire.2. Connect the cables, based on the table below.Shadow Drive Wire Color CCu/ECu Interconnect Cable WireColorRed (+) Brown (+)Black (-) Black (-)3. Solder and cover all bare-wire connections.