INSTALLATION PREPARATION

BEGINNING INSTALLATION

BEGINNING INSTALLATION

Now that you have determined the transducer mounting method, you can begin installation of the 405SX. The fold out installation guide included provides detailed step by step instructions for installation of the control head and transducer. For transom mount transducer installations, you will need the mounting template at the back of this manual.

In addition to the parts included you need the following for installation and operation:

A powered hand drill and various drill bits

Phillips and flat-head screw drivers

A ruler or measuring tape

Pen or pencil

12 volt power source (your boat’s battery)

A 1-amp fuse

A fuse holder (if you are wiring directly to the boat’s battery)

Silicone sealant (for sealing drilled holes)

2-part, slow-cure epoxy (for inside the hull transducer installations)

Note: If you have purchased the 405SX+ you will have in addition to the parts and instructions above:

Speed and Temperature sensors

Instructions for installing speed and temperature sensors

Appropriate hardware to mount sensors

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Humminbird 405SX manual Beginning Installation