It's the compass

 

I apologize for the confusion you are correct the dome on the dash with the pats light also houses the sensor for the auto headlights. I did not hold my hand over it long enough. This morning I was driving and I put my beanie hat over it and 30 sec later the head lights came on. Thanks.

 

Lol its all good didnt mean to come off as a d!**. I was getting worried that you might have gotten exposed to radiation and your hand was glowing.

 

It's cool I think my hand is just to white. Lol I like the diagrams you found they are very helpful.

 

Apparently my hand is also too white. Thanks for the diagrams!