Re: 2006 - 2302 stereo pre-wired?
My older boat had a square plug with 6 or so pins. This plug was located directly behind the stereo. The stereo unplugged from this single plug. It was fairly easy to spot, because the older Trophy used the typical household stereo speaker wire. These wires were easy to spot and led straight to the plug. If it's not there, don't worry, the factory wiring wasn't that great anyway. I replaced it. Red, black and stereo memory to the fuse block. Ran heavier speaker wire to the side pocket speaker location.