Hi, I received a Garmin fishfinder as a Christmas present. Its getting close to boating season in upstate NY, and I really don't have a clue about installing it. I believe the transducer should be easy enough, as will be running the wires above deck, but where / how do I hook up the electrical connection? I'm not looking to rip up the dash, and I do have a switch available for connection, but I'm just unsure. I have a 2016 Sweetwater 2086 coastal edition. Thanks i advance for any guidance you can give me.