Humminbird HELIX Series Installation Manual page 2

HELIX® SERIES CONTROL HEAD Installation Guide
To run the cables through a hole close to the bracket, mark and drill a 1" (25 mm) hole 2" to 4"
(50 to 100 mm) near the bracket. Press the grommet into place on the hole.
screws
back
bracket hole(s)
4. Place the mounting bracket on the mounting surface aligned with the drilled holes, and fill the
mounting holes with marine-grade silicone sealant. Insert the four #8 x 1.25" (32 mm) screws
into the mounting holes. Hand-tighten only!
5. Slide the control head into the bracket. Adjust the control head viewing angle as needed, and
tighten the gimbal knobs until the assembly is secured. Hand-tighten only!
3
| Connect the Control Head to Power
It is important to review the following information before you start the power installation:
∆ Cable Length: A 6' (2 m) long power cable is included. You may shorten or lengthen the cable
using multi-stranded copper wire. See the Recommended Power Cable Extension Information
table for details.
Recommended Power Cable Extension Information
Please consult a U.S. Coast Guard ABYC-approved wire gauge
diagram or a certified NMEA Marine Electronics Installer.
∆ Power Supply: The control head must be connected to a 12 VDC power supply using a 3 Amp fuse.
∆ Fuse Panel or Battery: The control head power cable can be connected to the electrical system
of the boat at the fuse panel (usually located near the console), or directly to the battery. In
order to minimize the potential for interference with other marine electronics, a separate power
source (such as a second battery) may be necessary.
WARNING! Some boats have 24 or 36 Volt electric systems, but the control head MUST be connected
to a 12 VDC power supply.
WARNING! Make sure that the power cable is disconnected from the control head at the beginning
of this procedure.
WARNING! Humminbird® is not responsible for over-voltage or over-current failures. The control
head must have adequate protection through the proper selection and installation of a 3 Amp fuse.
Install the Gimbal Bracket
front
under the bracket cable route
Extension Length
1 to 6 ft
6 to 12 ft
12 to 24 ft
Wire Gauge
18 AWG
14 AWG
12 AWG
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