Humminbird 1155C User Manual
Page 15
NOTE: When drilling holes in fiberglass hulls, it is best to start with a smaller bit and use progressively larger drill
bits to reduce the chance of chipping or flaking the outer coating. Fill all holes with marine grade silicone sealant.
NOTE: You must have underside access to the mounting location to pass the cables through to the surface. Also,
make sure that the mounting surface is adequately supported to protect the control head from excessive wave
shock and vibration and provide visibility while in operation.
NOTE: Go to the installation instructions applicable to your GPS Receiver and accessories. Make the required
installations and then run the cables to your control head mounting location. Do not cut any cabling (except the
power cable). If your cables are too short, extensions are available from your local dealer or online from
www.humminbird.com.
3. After the mounting location has been determined, loosen the gimbal knobs and remove the
control head from the gimbal bracket.
NOTE: Alternate hole patterns are available on the gimbal mounting bracket, and may match existing holes on
the boat. You may choose to use one of these alternate hole patterns.
4. Place the gimbal bracket in the chosen position on the mounting surface and mark the four
mounting screw locations using a pencil or center punch.
5. Set the gimbal bracket aside and drill the four mounting screw holes using a 5/32"
(4.0 mm) drill bit.
Mounting Screws
1
Washer
2
Gimbal Mounting Bracket
3
3
2
1
7