Macbook pro 2011 - keyboard lighting issue

HI all,

I recently had to open up my macbook pro, when putting it back together think I have missed reconnecting the cable which lights up the keyboard, the only cable I think I might have missed is in the attached picture, does anyone know what i might need to do to fix this, I am sure its simple, I just cant seem to find where I need to look., the brown thin cable in the middle is the only one which I can't see where it plugs into, if it does at all