2006 gmc 3500 cc did the lights that are in the rear doors not actually have a bulb in them? I'm referring to the fixture in the rear door panels that have a clear lense with the red lense on the end. I noticed there was no wiring for a bulb. I pulled the panel off and couldn't find any wiring. I just got the truck so I don't know the answer to this. I'm assuming they didn't actually have a light in them?