I need to get a new HU. I'm thinking to get a KMR-350U because I've seen that it is compatible with the Aeware remote that came installed in my boat (2005 Mobius LSV). However, my current unit (KDC-MPV5025) seems to be connected to the Aeware remote via an extra wire on the back of the HU that looks like it was added on - it is not connected to a wire that is part of the wiring harness. Can anyone tell me how the Aeware remote is connected to a KMR-350U?

Thanks.