Chalmers1

I have recently bought a 2012 Chrysler 200C automatic (successor to the Sebring) and have noticed that, when I change from forward to reverse (or vice versa) there is a slight click/clunk coming from the diferencia  end of the drive shaft.  Should I be worried about it?

The instrument panel lights on my recently purchased Sebring 200C only work intermittently.  Looks like a loose connection somewhere, but where?  And is it accessible?