Located in the radio DIN area, not plugged to anything else.
Any ideas as to what it is or where it goes?

 

I think that's a ground wire that clips to the stock stereo.

Dale

 

What is it?

 

I second that assumption, when installing my new deck, I put a male spade on the ground wire coming from my new deck and attached it to that plug. No ground no power...I think, and my deck has power, I poured through the electrical diagrams and threads on here and found no answers so I put my deck on the line and it worked...

 

there was a thread on this about a week ago.
it is for the bose stereo