Hi guys, I got this older Hummingbird Fish Finder. I believe its the Hummingbird 100 Wide. What do I need to get it working. There are two cables that hook into the screen, one is connected to the sensor and the other is just a wire. Where does this wire go? To the battery? What kind of battery? Ill post some pictures in awhile so you know what im talking about. Thank you guys... and gals.