I just did this myself.
The license plate braket has a red LED on the outside and there is 3 white LEDS that shine down to light up the license plate.
Im going to be cutting in 2 2-inch lights for reverse idicators soon that will sorta look like this. Its amazing what duct tape will do to help out a picture.
If they are needed I have a pair of US style rear lights that well I just took off. I cut the harness to wire up my round LEDS, but nothing a little splicing couldn't fix. I'd be willing to send for free, but the shipping would be the killer. Either way speak up or forever hold your piece. Actually they are probably just going to go into a pile with all of my other junk that Ive taken off for one reason or another.
http://www.links4jeeps.com/phpBB2/viewtopic.php?t=2452