12 GHP12InstallationInstructions
13. Snap the mounting covers
➊
into place.
➊
For the autopilot system to function correctly, you must connect two
wires from the GHC 10 data cable (yellow and black).
1. Connect the yellow wire from the GHC 10 data cable to the yellow
wire from the CCU/ECU interconnect cable.
If the cable is not long enough, extend the yellow wire with 22
AWG (.33 mm
2
) wire.
2. Connect the black wire from the GHC 10 data cable to the same
ground location as the ECU.
If the cable is not long enough, extend the black wire with 22 AWG
(.33 mm
2
) wire.
3. Solder and cover all bare-wire connections.
You can install multiple GHC 10 devices (sold separately) to control the
autopilot from different locations on the boat.
• All additional GHC 10 devices must be at software version 3.0 or
later.
• All additional GHC 10 devices must be connected to the
NMEA 2000 network (page 12).
• To use an additional GHC 10 to turn on the autopilot, connect the
yellow and black wires from the additional GHC 10 to the same
wires as the primary GHC 10.
◦ If you connect additional GHC 10 devices to turn on the
autopilot, you must turn them all off to turn off the autopilot.
◦ If you do not connect an additional GHC 10 to turn on the
autopilot, then the additional GHC 10 will enter standby mode
when you turn it off, and the autopilot will remain on until
turned off by the primary GHC 10.
Notice
If you have an existing NMEA 2000 network on your boat, it should
already be connected to power. Do not connect the included NMEA
2000 power cable to an existing NMEA 2000 network, because only
one power source should be connected to a NMEA 2000 network.
You can connect the GHC 10 to the CCU through an existing NMEA
2000 network. If you do not have an existing NMEA 2000 network on
your boat, all the parts needed to build one are supplied in the GHP 12
package (page 13).
Optionally, you can connect NMEA 2000-compatible devices, such as
a wind sensor, a water-speed sensor, or a GPS device, to your NMEA
2000 network to use the advanced features of the GHP 12.
For more information on NMEA 2000, go to www.garmin.com.
1. Determine where to connect the GHC 10
➊
to your existing NMEA
2000 backbone
➋
.
➊
➋
➌
➍
2. Disconnect one side of a NMEA 2000 T-connector from the
network.
3. If necessary, to extend the NMEA 2000 network backbone, connect
a NMEA 2000 backbone extension cable (not included) to the side
of the disconnected T-connector.
4. Add the included T-connector
➌
for the GHC 10 to the NMEA
2000 backbone by connecting it to the side of the disconnected
T-connector or backbone extension cable.
5. Route the included drop cable
➍
to the bottom of the T-connector
added in step 4, and connect it to the T-connector.
If the included drop cable is not long enough, you can use a drop
cable up to 20 ft. (6 m) long (not included).
6. Connect the drop cable to the to the GHC 10.
7. Connect the drop cable to the T-connector you added in step 3, and
to the GHC 10.
NOTE: In order for the autopilot to turn on, the yellow wire from
the GHC 10 data cable be connected to the yellow wire from the
CCU/ECU Interconnect cable, and the black wire from the GHC 10
data cable must be connected to the same ground as the ECU
(page 12).
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