Where should I put this cable?

[Shin1]

Now I am installing the new Android radio unit (bought from the campany "Navifans" ). Changing the original monitor to a new one , I found a cable which I don't understand. Where should I connect this? Now I don' t connect this calbe to anyparts. So far my new Android works but original menu doesn't work and sound doesn't come out. I wonder this cable is something to do with the error.

[Shin1]

Sorry, I solved the problem by myself. The problem was something different. I just didn't connect some of the cables tightly. I just left the original cable (mentioned above) unconnected and seems no problem.
By the way, the space in which radio and air conditioning system were installed was very very limited and when I put the radio unit back, the cables were pulled and disconnected. Thank you for checking my article.