1a. If a fuse terminal is available, use
or...
1b. If you need to wire the control head directly to a battery, obtain and install an inline fuse holder and a 3 amp fuse (not included) for the protection of the unit. Humminbird® is not responsible for overvoltage or
NOTE: In order to minimize the potential for interference with other marine electronics, a separate power source (such as a second battery) may be necessary.
You are now ready to install the transducer. Find the section that refers to your specific transducer installation method.
Transducer Installation
There are three different installation methods for your transducer:
•Transom Transducer
•Inside the Hull Transducer
•Trolling Motor Transducer.
Your 900 Series™ uses a Two Piece
NOTE: If the included transducer will not work for your application, you may exchange it, NEW and UNASSEMBLED, with mounting hardware included, for a transducer appropriate for your application - often at very little or no charge depending on the transducer. Call the Humminbird® Customer Resource Center at
NOTE: Due to the wide variety of hulls, only general instructions are presented in this installation guide. Each boat hull represents a unique set of requirements that should be evaluated prior to installation. In addition to the hardware supplied with your transducer, you will need a powered hand drill and various drill bits, various hand tools, including a ruler or straightedge, a level, a 12" plumb line (weighted string or monofilament line), marker or pencil, safety glasses and dust mask, and
NOTE: Please read all instructions carefully and completely before beginning the installation process.
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.
NOTE: Your transducer may not look exactly like the transducer shown in the illustrations, but it will mount in exactly the same way.
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