Humminbird HELIX 7 Series Installation Manual page 2

HELIX® 7 Series In-Dash Mounting Installation Guide
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
• Drill a corner hole away from the main cut line using a drill bit that will create a hole as close to a
diameter of .5 inches (12.7 mm) as possible. Repeat for the other three corners as indicated 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 dotted 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.
3. Install the In-Dash Mount Bracket
To install the in-dash mount bracket, you will need the gimbal knobs included with your control head. See
your control head installation guide for more details.
Preparation
1. Place the control head, with the screen facing down, on a towel or cloth on a stable and level surface.
Install the Ratchets
1. Hold the in-dash mount bracket so the arms on the bracket are pointing up.
2. On the inside of the ratchet, locate the ribs (two semicircles) and align them with the openings on the
inside of the bracket arm (see the illustration Installing the Ratchets on the In-Dash Mount Bracket).
With this orientation, install the ratchet on the bracket arm.
3. Repeat: Repeat step 2 to install the second ratchet.
Install the Gimbal Knobs
1. Holding the ratchets in place, lower the bracket (with the bracket arms pointing down) onto the back of the
control head. Align the ratchets on the bracket arms with the openings on the sides of the control head.
NOTE: The in-dash mount bracket is symmetrical. Therefore, it does not require a specific installation orientation.
2. Confirm the bracket is parallel with the face of the control head (see the illustration Installing the
In-Dash Mount Bracket on the Control Head). Thread a gimbal knob into the opening on the control
head and tighten using four to five rotations.
3. Repeat: Repeat step 2 to install the second gimbal knob.
4. Confirm the bracket is still parallel to the face of the control head and hand-tighten both gimbal knobs
to secure the bracket to the control head.
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Installing the Ratchets on the
In-Dash Mount Bracket
ratchets
Align the ribs with the
openings on the inside
of the bracket arm.
bracket arm