I've been looking to put a radar detector in my 2004 XLT Screw recently, and I've noticed this 3inch by 3 inch electrical module that is plugged in right under/behind the rear view mirror. I can pull it off and unplug it, but I have no idea what it is. It has one button, and could be a garage door opener, however it would be in a horrible place if that's what it was. Doesn anyone know what this thing is? Can I use the wire that's plugged into this thing to power a radar detector?

Thanks

 

That module is the compass.