HELIX® Series In-Dash Mounting Installation Guide
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Installation Overview
Following are instructions for the in-dash mount installation of the HELIX control head. We encourage you to
read this guide before starting the installation, so you may understand the installation requirements.
Customer Service: If you find that any items are missing from your installation kit, visit our Web site at
humminbird.com or call Humminbird® Customer Service at 1-800-633-1468.
Supplies: In addition to the hardware supplied with your accessory, you will need the (2) gimbal knobs and cable
tray included with your control head, a drill and various drill bits, a cutting tool for the dashboard material, 7/16"
(11 mm) adjustable wrench, safety glasses and dust mask, and masking tape. If the dashboard is thicker than 5/8"
(16 mm), you may need to use the longer carriage bolts (included with hardware).
WARNING! Do NOT use power tools to secure the hardware. We encourage you to read the installation instructions
so you may understand the installation requirements.
NOTE: The illustrations in this manual may not look the same as your product, but your product will function in the
same way.
1. Plan the Mounting Location
Start by locating a suitable, flat area of the dashboard for mounting. Consider the following to find the best
mounting location:
• Interference: The mounting location must provide adequate distance from electric motors or any equipment
that may cause electronic interference.
• Stability: The mounting area should be protected from waves, shock, vibration, and water.
• Depth: The mounting area should have a depth of 4½" (114.3 mm) to allow space for the control head and cables.
• Ventilation: The area beneath the mounting surface should be well-ventilated.
• Accessibility: The location should be easily accessible for all cables to reach the ports on the back of the
control head.
• Multiple Control Heads: If you plan to install more than one control head side by side, leave a minimum
space of 5/8" (15.9 mm) horizontally or 1/2" (12.7 mm) vertically between control heads. Take your
measurement from the front edges of the control head. See the template for more information.
NOTE: If a cable is too short for your application, extension cables are available. For assistance, contact
Humminbird Customer Service.
2. Cut the In-Dash Mounting Hole
To in-dash mount the HELIX control head, start by placing the components on the surfaces where you intend to
install them.
1. Review the instructions, measurements, and cutting options indicated on the In-dash Mounting Template.
2. Tape the template to the chosen in-dash mounting location.
3. Using the template, select the cutting method that is best for your boat:
• Drill one entry hole away from the main cut line that is large enough to insert the blade of your cutting
tool.
OR
• Using a 5/8" drill bit, drill the 4 corner holes (inside the main cut line) as shown on the template. Use one
of the corner holes as an entry hole, or drill an additional entry hole away from the main cut line.
4. Carefully begin cutting toward the cut line, and continue cutting to the inside of the line around the template.
5. Test the Mounting Hole: Install the control head in the mounting hole to test the fit. Make adjustments to
the mounting hole as needed. Remove the template when finished.
6. Thoroughly clean and deburr the mounting hole.
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