Humminbird HELIX Series Installation Manual page 3

HELIX® SERIES CONTROL HEAD Installation Guide
Δ 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 the fuse size
shown in the Required Fuse Size table.
1. Confirm that the power cable is disconnected from the control head.
2. Connect the power cable wires to the fuse panel or battery as follows:
Fuse Terminal Connection: Use crimp-on type electrical connectors (not included) that match
the terminal on the fuse panel. Attach the black wire to ground (–), and the red wire to positive
(+) 12 VDC power. Install the required fuse (as shown in the Required Fuse Size table).
Battery Connection: Install an inline fuse holder (not included) and the required fuse (as shown
in the Required Fuse Size table). Attach the black wire to ground (–), and the red wire to positive
(+) 12 VDC power.
NOTE: For multi-control head installations and troubleshooting information, download the
Power Troubleshooting Guide from our Web sitelso, see the Operations Summary Guide to set the
Low Battery Alarm and use Standby Mode to conserve power.
NOTE: If you have a trolling motor, it is important to keep the control head power and trolling motor
power as separate as possible.
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| Route the Cables to the Control Head
1. Sonar: Proceed to your transducer installation guide and follow the instructions to install the
transducer.
2. Accessories (optional): Install accessories using the guides provided with them.
3. Ethernet (optional): Install Ethernet cables and hardware using the Ethernet Installation Guide.
NOTE: The installation guides for Ethernet and optional-purchase accessories are
available with your product, and they can be downloaded from our Web site
4. Route all cables to the control head. Your boat may have a pre-existing wiring channel or
conduit that you can follow. Route the cables as far as practical from the antenna cable of VHF
radios or tachometer cables to reduce the possibility of interference.
CAUTION! Do NOT mount the cables where the connectors could be submerged in water or
flooded. If cables are installed in a splash-prone area, it may be helpful to apply dielectric
grease to the inside of the connectors to prevent corrosion. Dielectric grease can be
purchased separately from a general hardware or automotive store.
5. Pass the cables through the cable hole.
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532405-5_A
GROUND
Inline Fuse Holder
NMEA 2000® Port
(optional)
Net S
(+) Power
Net C
(-) Ground
LEN = 2
Routing the Cables
Behind the Bracket