Quote Originally Posted by jaxsprat
If U do use a power source in hse, be sure to always use a 3amp fuse. 997 uses 0.5 to almost one amp, gots to protect it all times with that 3amp fuse. Same goes in boat. Even tho I use a power source that a dealer got from Lowrance for display use I still have a 3 amp fuse in line. Protect your $

Good advice here. You can learn a lot by pushing buttons while relaxing in your recliner. This is how I do it. I keep my unit at my desk. Play with it occasionally to keep my memory refreshed on how to use the unit. I have to. Brain is getting worn with age.

I knew someone would come up with a power supply. I built my own and bitched 'cause Humminbird didn't offer one. Two 9 volt batteries. ha