I just removed my EchoMap on the console and replaced it with a GPSMap as the EchoMap will not network with a GPSMap that is on the bow. I changed the power on to no and the power off also When I turn the Console unit on the bow unit turns on also. That would be fine but when I launch the boat I turn on the console unit first thing and the bow units transducers and not in the water yet. Am I missing something?