Originally Posted by AgZep
Are you sure there's really any bulb in there? CCDs generally have LED tailights, which sometimes have a bad bar or two for no apparent reason. We've even had them mysteriously start working again, after going dark for a month or two.
These are sealed LED taillights, same as I had on my 2003 International 22. You should still be under warrenty.
I had water in one of mine and it was replaced under warrenty. The dealer had trouble crimping the new unit in because the wires coming out of the trailer body were so short.