Have you pulled the glove box out and had a listen.
Removing glove box. Open glove box and gently squeeze the right and left side of the glove box inwards, to allow the two plastic stop-pins on the sides to clear the opening within the dash. The glove box will then come right out
http://www.tmar.net/images/Glove-box-2011-wrangler.jpg
To me it does not sound like a mechanical sound but something body related, ie. body parts or internal part vibrating, maybe due to something mechanical vibrating.
Has the sounds suddenly come on, i.e. was not there one day and there the next?
Have you made any changes recently, added something internally externally. Small or large? e.g. Taken or put the Hardtop on, installed a new accessory. I have any annoying rattle and it turned out to be the new UHF hand Mic button rattling.
Something to try, either yourself or someone else put your hand on the dash or other internal parts of the car. See if you can feel the vibration? Can you feel a vibration in the steering at all?