GHP 12 Installation Instructions
9
Installation Procedures
After you have planned the GHP 12 installation on your boat and
satisfied all of the mounting and wiring considerations for your
particular installation, you can begin mounting and connecting the
components.
Drive unit Installation
The drive unit drives the rudder and is sold separately from the GHP 12.
When you purchase a drive unit from Garmin, it will have the correct
cables and connectors.
If a drive unit is installed on your boat already, you can purchase GHP
12 drive unit cables (not included) to adapt your drive unit for use with
the GHP 12.
Installing a Garmin Drive unit
Use the installation instructions provided with the drive unit to
install it on your boat.
Preparing a non-Garmin Drive unit
In order to use a non-garmin drive unit with the GHP 12, you must
install both the GHP 12 drive unit power cable and the GHP 12 rudder
feedback cable. Both cables are sold separately.
These instructions do not apply to a solenoid-type drive unit. To prepare
a solenoid-type drive unit, see
.
1. If your drive unit has cables connected, disconnect the cables.
2. Consult the documentation provided by the manufacturer of your
drive unit to identify the connections on your drive unit.
3. Connect the GHP 12 drive unit power cable (not included) to your
drive unit, based on the wire colors and functions defined below.
Wire Color
Function
Red
Drive unit positive
Black
Drive unit negative
Blue
Clutch power (cut and tape this wire if your drive unit
has no clutch)
White
Clutch ground (cut and tape this wire if your drive
unit has no clutch)
The GHP 12 drive unit power cable cannot be extended.
4. Connect the GHP 12 rudder feedback cable (not included) to your
drive unit, based on the wire colors and functions defined below.
Wire Color
Function
Red
Feedback positive (+)
Black
Feedback negative (-)
Yellow
Feedback wiper
If necessary, extend the appropriate wire with 22 AWG (.33 mm
2
)
wire.
5. If necessary, use the installation instructions provided with the drive
unit to install it on your boat.
Preparing a Solenoid Drive unit
In order to use a solenoid drive unit with the GHP 12, you must install
both the GHP 12 drive unit power cable and the GHP 12 rudder
feedback cable. Both cables are sold separately.
These instructions apply only to solenoid-type drive units. To prepare a
non-solenoid drive unit, see
.
1. If your solenoid drive unit has cables connected, disconnect the
cables.
2. Consult the documentation provided by the manufacturer of your
solenoid drive unit to identify the connections on your drive unit.
3. Connect the GHP 12 drive unit power cable (not included) to your
solenoid drive unit, based on the diagram and tables below.
The GHP 12 drive unit power cable cannot be extended.
+ -
+ -
+ -
➊
➋
➌
➍
➎
➏ ➐
➊
➋
➌
➍
➎ ➏
➑
➐
Item Description
notes
➊
GHP 12 Drive Unit Power
Cable
Sold separately.
➋
Starboard solenoid
➌
Port solenoid
➍
Bypass solenoid
May not be present in all systems.
➎
Auxiliary steering system May not be present in all systems.
➏
Flyback diode
Required for all installations.
➐
Blocking diode
Required if an auxiliary steering
system is present.
Wire Color
Description
➊
Red
Connect to starboard solenoid positive (+).
➋
Black
Connect to port solenoid positive (+)
➌
Blue
Connect to bypass solenoid positive (+).
Cut and tape this wire if no bypass solenoid is
present
➍
White
Connect to starboard, port, and bypass solenoid
common (-).
➎
N/A
Auxiliary steering starboard positive (+) (if present).
➏
N/A
Auxiliary steering port positive (+) (if present).
➐
N/A
Auxiliary steering bypass positive (+) (if present).
➑
N/A
Auxiliary steering common (-) (if present).
