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Attach the new cable to the steering arm of the
boat by pulling out the cotter pin and clevis pin
to release the old steering shaft and replacing it
with the new steering shaft. Line up the shaft
with the steering arm by turning the steering
wheel and re-insert the cotter and clevis pins.

5.5 Fitting Control Unit SHC14

The SHC14 controller is supplied with a cradle
that can be screwed to a convenient bulkhead
using the supplied self-tapping screws. Drill
2.5mm (0.1 in) pilot holes for the screws.

• If fitting to glassfibre (GRP) countersink the
holes before screwing in to avoid splitting the
gelcoat.

The SHC14 is fitted with a coiled cable ending
in a four-pin plug. This connects to the autopi-
lot via a weatherproof socket assembly and
junction box.

• Fit the bulkhead socket to a vertical surface to
prevent standing water gathering around or in
the socket. Always fit the weather cap when the
remote is not plugged in.

To fit the socket to the dash, a 25mm (1 in) hole
will need to be drilled for the socket, which is
fixed using the four self-tapping screws provid-
ed with the socket assembly. Drill 2mm (0.1 in)
pilot holes for the screws.

• Again, to avoid splitting the gelcoat if fitting to
GRP, countersink the holes before screwing in.

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Fig 5.8 - Connecting control unit

5.6 Fitting Compass Unit SHS12

The compass should be positioned as close to
the centreline of the boat as possible (Fig 5.9), in
one of four possible orientations (see section
6.2). If the boat is GRP or wooden, the compass
can be mounted below deck, but must be at
least 1m (3 ft) away from any metallic objects
such as stereo speakers, heating units etc.

• If the boat has a metal hull (this includes fer-
rocement), the compass must be mounted
above decks on a mast or pole between one and
two metres (3 to 7 feet) above deck.

When mounting, make sure that the compass is
the right way up and is level. The compass unit
can be screwed to a vertical bulkhead using the
two No.6 x

in self tapping screws provided. If

screwing into GRP, drill pilot holes and coun-
tersink them properly, which will stop the gel-
coat splitting when the screws are tightened.

5.7 Electrical Installation

• The AP14R should be connected to the boat’s
battery via the main switch panel with a proper-
ly rated breaker or fuse and switch.

• The AP14R operates from a 12v DC supply.
Power is supplied to the system via the two
core cable from the SRD12 drive unit.

Brown

is 12v+, Blue is 0v.

• If the power cable needs to be extended, the
correct diameter cable should be used,
depending on the length of run (Fig 5.10). For
this reason, it is recommended that any addi-
tional cable runs be as short as possible.

The SHC14 control unit, SHS12 compass and
SRD12 drive unit are wired together using the
SJB12 junction box supplied. All three cables
have the same core colours - Red, Black and
White, and the terminals in the junction box
are clearly marked (Fig 5.11 - over).

• For good connections, all wire ends should be
tinned if the cables are shortened. Poor connec-
tions will impair the performance of the pilot.

• The cables should be kept away from cables
which carry radio or pulsed signals (1m / 3 Ft
minimum distance is recommended).

Length of
Cable Run

Under 5M

(16.6Ft)

5-10M

(33.3Ft)

Cross Section

Area

2.5mm2

4mm2

Conductor