i just purchased a new Wired Remote (kenwood kca-rc60mr) to replace one that had went out. I hooked it all up right just like the last one was. It works fine while the boat is on trailer... but once i get boat into water and start cruising and go to use remote it doesnt work at all not one function works. i load the boat back up and after 15 mins on trailer it works again.... i have traced all wires....ran new ground wire direct from battery and still have issues once boat hits water...... any answers or help please????