The third brake light on the trunk is out. It has been out for a while now. I tested to see if there is electricity coming to the light and there isn't any. The bulbs have been changed already. The rest of my brake lights works fine. The dash doesn't have any lights on, indicating any problems.Can anyone assist me in figuring out this problem?

Very common problem, if fact Benzmac & I were just talking about this problem. In the trunk by the passenger deck lid pivot is the wiring harness that feeds the lamp. After the trunk is opened many times the wires break, fabrication of repair harness should do the trick.