What is the 2"X 3" box between the rear view mirror and windshield?

Too much reflection, have to wait for daylight.

Having trouble with upload

Went on line and checked out rain sensing wipers and it checks out with every thing i saw. Now all i have to do is figure out how to activate it. Thank you Tom for all your input, I'll post if I find out anything

Went to dealer today and got rain sensing wipers turned on, now all I have to do is wait for rain. Thanks again Tom.

Is that the rain sensor? I thought it was a headlight sensor turns off the auto high beams when another vehicle approaches. Chrysler told me that rain sensing is part of the windshield and that the previous owner cheaped out and purchased an after-market windshield without the rain sensor capabilities. There is, as well (according to Chrysler), a 'rain sensor module' that goes with it and that my vehicle's is missing. Could it be that that device is all that is needed? Is it an eye that senses the rain? My Haynes repain manual shows nothing on this.