Looks like the inner tail lights (ones on the trunk) weren't turning on.
Checked every possible fuse the license plate lights would be under and they were all working fine. No problem with the ground.
Quoting what you were saying CraigW: "You could have a broken wire in the harness that flexes with the opening/closing of the trunk."
That is exactly where the problem was. Seems like this is a common problem from what my buddy told me (car technician). The opening and closing of the trunk puts stress on the wires causing it to snap.
Took a couple pictures after it was fixed: http://i240.photobucket.com/albums/f...9-10_19-51.jpg http://i240.photobucket.com/albums/f...9-10_19-52.jpg
Thanks all to who replied. Hope this helps.