Genuine Humminbird® accessories offer the opportunity to upgrade and expand the capabilities of your Humminbird® product. NOTE: Your transducer may not look exactly like the transducer shown in the illustrations, but it will mount in exactly the same way. Your Humminbird® accessory is designed for trouble-free use in even the harshest marine environment. In the unlikely event that your Humminbird® accessory does require repairs, we offer an exclusive Service Policy -free of charge during the fir

Contact our Customer Resource Center at 1-800-633-1468 or visit our web site at Installation Overview Following are instructions for the installation of this accessory. Before you start the installation, we encourage you to read these instructions carefully in order to get the full benefit from your Humminbird® accessory. If you find that any items are missing from your installation kit, call our Customer Resource Center at 1-800-633-1468 or visit our web site at In addition to the hardware supp

The available Lower Range settings are determined by your Humminbird® model as follows: • 778c HD: Auto to 1500 ft, Auto to 500 m (International Models only); Default = Auto • 778c HD XD: Auto to 3200 ft, Auto to 975 m (International Models only); Default = Auto Flasher X-Press™ Menu 56 Zoom Level (Circular Flasher View, Ice Fishing Mode only) Settings: 1x, 2x; Default = 1x Zoom Level sets the magnification level for the Circular Flasher View when Ice Fishing Mode is turned on. When the Zoom Lev