Humminbird ONIX8 Installation Manual page 7

• The mounting location should allow for visibility during
operation, as well as easy installation and removal.
• You must have access, either above or below the
mounting surface, to pass the cables through to the
control head.
6. Test route the appropriate cables (power, accessory, etc.) to
the control head mounting location. If the cables are too
short for your application, extension cables are available.
Contact Customer Service for information.
2
| Drill the Mounting Holes
1. Loosen the gimbal knobs and remove the control head from
the gimbal bracket.
2. Place the gimbal bracket in the chosen position on the
mounting surface and mark the four outer screw locations
using a pencil or center punch (see the illustration Gimbal
Bracket: Mounting Holes). Confirm the front of the bracket is
facing forward.
NOTE: The outer mounting holes are recommended.
You may use the interior mounting holes if necessary.
3. Set the gimbal bracket aside. Select an appropriately sized
drill bit for the #10 wood screws and drill four pilot screw
holes.
NOTE: When drilling holes in fiberglass, start with a
smaller bit and use progressively larger drill bits to
reduce the chance of chipping the outer coating.
4. Mark and drill a 1-inch (25.4 mm) diameter hole that will
allow you to run the cables close to the mounting bracket.
This hole should be centered approximately 2 to 4 inches
(50.8 to 101.6 mm) from the back of the control head.
NOTE: Your installation may require additional cable
holes. Mark and drill up to four holes according to the
instructions in step 4.
5. Insert the plastic cable grommets (included) to smooth the
hole edges and prevent damage to the cables.
3
| Install the Gimbal Bracket
Refer to the section that applies to your installation and perform
the procedures to install the gimbal bracket.
Installing the Gimbal Bracket
wood screws
Traditional Mount
1. Place the bracket on the mounting surface aligned with the
drilled holes and fill the holes with marine-grade silicone
sealant.
2. Place one flat washer on each wood screw and install the
wood screws into the four mounting holes (see the
illustration Installing the Gimbal Bracket).
3. After all four screws are in place, tighten each screw until
secure.
4. Place the control head back onto the gimbal bracket (see
Determine the Mounting Location for details). Adjust the
control head viewing angle as needed and tighten the gimbal
knobs until the assembly is secured.
Overhead Mount
1. Place the bracket on the mounting surface aligned with the
drilled holes. Fill one hole with marine-grade silicone
sealant.
2. Place one flat washer on a wood screw and install the wood
screw into the hole (see the illustration Installing the Gimbal
Bracket). Repeat for the remaining three holes.
3. Tighten each screw until it is secure.
4. Place the control head back onto the gimbal bracket (see
Determine the Mounting Location for details). Adjust the
control head viewing angle as needed and tighten the gimbal
knobs until the assembly is secured.
NOTE: Overhead and/or thin panels may require
additional hardware (separate purchase required) to
securely mount the control head.
3
flat washers
Install the Control Head