I installed a carbon fiber trunk lid not so long ago. I noticed that the third brake light along with the trunk light stoped working. I got some new bulbs and still had nothing. So I used a multi meter and tested power right at the bulb sockets, I have power and good grounds, but still no light or third brake light. We are at a lose with this one. I didnt check the 10a fuse cause my other brake lights are working fine. We also thought that maybe the trunk lock unit used the steel trunk lid as a ground, but my trunk lock is working which means the harness is getting power and a good ground. This is very frustrating. One thing I did find weird is that the harness uses a constant power, Im sure its normal but I found it weird. Any help would be sweet.