Ok, it was bugging me, so I crawled under the car at 1am with a flashlight.
This picture was taken with an iphone cam, so it's not very good, but you can clearly see the wiring harness going to the enclosure box, and from what I can tell in the dark, it looks like there is a bulb of some type in it. So it's not just a lens with nothing behind it, it appears to be complete. Now we just have to figure out how to get it to turn on
Rep points please for crawling under the car at 1am in the dark :-)
Braden