You'll need to replace it with a plate that has a light or LED included. I used the one suggested by NJ from custom dynamics - Street Magic Chrome Horizontal LED License Plate Frame. Simple to install and looks great, especially at night.
Thanks eian for the confirmation. I wasn't sure if mine was screwed up or not LOL. For those of you that used the Custom Dynamics license plate bracket. I just love the way that light shines. Really bright.