Power Supply
I have a humminbird 997 side finder. I bought an extra power supply cord, and tied it into a cigerette power adaptor. It has an internal 3 amp fuse. I also put an inline 3 amp fuse. I have a jump box, that I use to jump dead batteries. It also has a cigerette adaptor power supply. Just plug it in, and turn on the gps , or depth finder . What ever you do put an inline fuse to protect your device. hope this helps.
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