The 3rd brake light on my 2001 F-150 was full of water. I found an LED replacement (actually, several) at Amazon.com and purchased same. Other than struggling to pull out the two plastic doohickeys in the overhead (where the 3rd light connector is located) the job went very fast - about 30 minutes. I found the sockets for the 3rd light were melted. Wow! The part number is: F65B-13A613-AB. You can do the search in Amazon.com from there. Shown here is the OEM light - just before I removed it.