I just bought a used Fortrex 101 and have a Lowrance LCX-18 on my bow. When looking for the correct adapter cable to connect the Lowrance unit to the Fortrex, Minn Kota's website does not list the LCX-18. Does this mean that it is not compatible with the US2? I see lots of other LCX options, just not the one I have. Any help would be appreciated. Thanks