Manual Garmin GHP 12 Autopilot System (page 10 of 28) (English)

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10 GHP12InstallationInstructions



Install the GHC 10 by ush-mounting it in the dashboard near the helm,

connecting it to the yellow wire from the CCU/ECU interconnect cable,

and connecting it to a NMEA 2000 network.

To use advanced features of the GHP 12, optional NMEA

2000-compatible or NMEA 0183-compatible devices, such as a wind

sensor, a water-speed sensor, or a GPS device, can be connected to

the NMEA 2000 network or connected to the GHC 10 through NMEA

0183.



Notice

The temperature range for the GHC 10 is from 5°F to 158°F (from

-15°C to 70°C). Extended exposure to temperatures outside of this

range (in storage or operating conditions) may cause failure of the

LCD screen or other components. This type of failure and related

consequences are not covered by the manufacturer’s limited warranty.

If you are mounting the GHC 10 in berglass, when drilling the

four pilot holes, it is recommended to use a countersink bit to drill a

clearance counterbore through only the top gel-coat layer. This will

help to avoid any cracking in the gel-coat layer when the screws are

tightened.

Stainless-steel screws may bind when screwed into berglass and

overtightened. Garmin recommends applying an anti-galling, stainless

anti-seize lubricant to the screws before installing them.

Before you can mount the GHC 10, you must select a mounting location

(page 5).

1. Trim the ush-mount template and ensure it will t in the location

where you plan to mount the GHC 10.

The ush-mount template is included in the product box, not in

these instructions.

The ush-mount template has adhesive on the back.

2. Remove the protective liner from the adhesive on the back of the

template and apply it to the location where you plan to mount the

GHC 10.

3. If you will be cutting the hole with a jigsaw instead of a 3

in. (90

mm) hole saw, use a

in. (10 mm) drill bit to drill a pilot hole as

indicated on the template to begin cutting the mounting surface.

4. Using the jigsaw or the 3.5

in. (90 mm) hole saw, cut the mounting

surface along the inside of the dashed line indicated on the ush-

mount template.

5. If necessary, use a le and sandpaper to rene the size of the hole.

6. Place the GHC 10 into the cutout to conrm that the four mounting

holes are correct.

7. Select an option:

• If the mounting holes are correct, proceed to step 8.

• If the mounting holes are not correct, mark the correct locations

of the four mounting holes

8. Remove the GHC 10 from the cutout.

9. Drill the four

in. (3.2 mm) pilot holes.

If you are mounting the GHC 10 in berglass, use a countersink bit

as advised in the notice.

10. Remove the remainder of the template.

11. Place the GHC 10 into the cutout.

12. Securely fasten the GHC 10 to the mounting surface using the

supplied screws.

If you are mounting the GHC 10 in berglass, use a anti-galling

lubricant as advised in the notice.

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

) 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

) 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 11).

• 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.

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