2002 Boxster S
Factory Bose Speakers and Amp

I instaled a AVIC920BT using the harness kit several months ago. One issue that I had post installation was that the video bypass didnt work. Yesterday I removed the radio to fix the bypass. Everything looked successful, however last night I noticed that some odd switches no longer worked. Power Windows, Power Lock, Rear Defrost. I have checked row D in the fuse box and all looks good. I dont even see how these things can be related at all.
I took the center console and dash completely apart tonight to inspect for any damage and I dont see any crimped or damaged wires. I did find one 4 wire harness at the bottom center of the dash not plugged in but I cant find anything it would plug into. I also cant find what that plug is used for in the Bently maintenance manual.

Thanks again for any help...