Hello I feel like a bit of a twit asking this (as I'm sure it is probably something obvious) I discovered this sensor or light on the roof interior of my 2006 (Australian model) wagon and I have no idea what it is I've re-read the owners manual and there is no mention of it that I can find...

Just thought I'd share my latest upgrade Spyder chrome tail lights on my 06 wagon These were purchased on eBay and were for a Dodge Magnum They are a perfect fit on my car They're were easy to install They look good and are really bright I replaced the turn bulb with an LED for a cleaner look...