Humminbird HDR 650 - Manual (Page 6)

Installation Overview
Before you start installation, we encourage you to read these instructions
carefully in order to get the full benefit from your HDR 650 Digital Depth Sounder.
In addition to the hardware included in the installation kit, you will also
need the following supplies:
• powered hand drill and various drill bits, including a 2 1/8" hole saw if your
boat does not have an existing gauge hole
• Phillips-head and flat-head screwdrivers
• ruler or measuring tape
• pen or pencil
• 12 Volt power source (your boat's battery)
• marine-grade silicone sealant (for sealing drilled holes)
• two-part, slow-cure epoxy (for inside-the-hull transducer installation only)
NOTE: If you are wiring directly to the boat's battery, you will also need a 1 Amp
fuse and a fuse holder.
2 Installation