I was getting the 'Brake Light Out' occasionally for about a week. Each time I would check the brake lights and they were fine. The picture of the rear end of the truck was of no help. It shows the right brake not illuminated, the left side is yellow, and the 3rd brake light is on. I finally happened to look at the 3rd brake light and saw it was not working. Not only that, it had significant water in it. Took it apart and the center bulb had a big hole in it and bulb was full of water.
The 3rd brake light had a major leak (gallons of water in the storage wells under the seat) when the truck was a month old and was serviced by the dealer. Obviously a half ass
job. They just put a 1/16" bead of silicone only across the top. I ended up filling in the whole space with silicone; it will be a pain to remove, but it will not leak in the future!
BTW: Had this same problem with my 95 RAM. Wish the RAM engineers would get their act together and design a proper seal for this light. Picture of duck is from 2015 after bailing.
The 3rd brake light had a major leak (gallons of water in the storage wells under the seat) when the truck was a month old and was serviced by the dealer. Obviously a half ass
BTW: Had this same problem with my 95 RAM. Wish the RAM engineers would get their act together and design a proper seal for this light. Picture of duck is from 2015 after bailing.