Proper installation of your Humminbird fish finder is essential for optimal performance. This guide will help you determine the best location and method for mounting both the control head unit and the transducer.
All Installation Guides and Manuals are provided on our main site. The guides will be listed under the product Series that you own or under the Humminbird Accessory you are trying to install.
Mounting the Control Head Unit
The control head houses the sonar circuitry, user controls, and display. To ensure ease of use and visibility:
Installation Tips
- Mount the control head where it’s easily accessible and clearly visible during operation.
- GPS-equipped models require a clear, unobstructed view of the sky to maintain signal.
- External sensors, such as the AS GPS HS, are available if mounting in-dash or coverings are unavoidable.
- Use a tilt-capable mounting bracket to adjust the viewing angle.
- Swivel mounts are not included, but many third-party options are available.
- We do not recommend specific brands due to the wide variety and configurations available.
⚠️ Because of the number of third-party mounting systems, we cannot test or guarantee compatibility with specific models.
Understanding the Transducer
The transducer is responsible for sending and receiving sonar signals. It converts electrical energy into sound waves and interprets the echoes to display underwater information on the control head.
To function properly, the transducer must be:
- In direct contact with water
- Mounted in an area with smooth water flow
- Typically installed on the transom of the boat
Mounting the Transducer
Your Humminbird unit includes a transom-mounted transducer, which can be installed in one of several ways:
Transom Mounting
- Mounted outside the hull, at the rear of the boat.
- Offers minimal signal loss and adjustability after installation.
- Included hardware is designed to protect the transducer from impact with debris or trailer damage.
In-Hull Mounting
- Suitable for fiberglass hulls only.
- Transducer is bonded inside the hull using two-part slow-cure epoxy (not included).
- Works only with 2D sonar transducers — not compatible with Side Imaging or Down Imaging models.
⚠️ The hull must be single-layer fiberglass with no foam or air pockets, as these interfere with sonar signals.
Installation Tips
- Avoid areas with turbulent water or air bubbles.
- Test placement before final bonding (especially for in-hull installs).
- Use marine-grade epoxy for durability and long-term adhesion.
Trolling Motor Mounting
- Ideal for anglers who want sonar coverage from the bow of the boat.
- Transducer is mounted directly to the trolling motor shaft or motor housing.
- Compatible with many 2D, Down Imaging, and Side Imaging transducers (check model specifications).
- Existing transom mount transducers require a trolling motor mount kit (sold separately).
✅ Provides sonar readings from the front of the boat, useful for precise casting and structure targeting.
Thru-Hull Mounting
- Transducer is installed through the hull, requiring a hole to be drilled.
- Commonly used on larger boats or those with metal hulls.
- Offers durable, permanent installation with excellent signal quality.
⚠️ Professional installation is recommended due to the complexity and need for watertight sealing.
