Had lots of time to ask my Service Manager questions on various topics during my 4-hour 20E04 recall today. I brought up this question to him and my suspicions were correct that this isn't just a matter of swapping bulbs. He said you need to swap out light assemblies and the voltages are different, so wiring harnesses are involved also = he said it is not easy, so much so that he said he will NOT do this in his Service department at my dealership due to cost of parts & complexity. He recommended acquiring the parts from a host/donor vehicle (= wrecked F150 with higher trim level in a salvage yard) that you can move over all of the pieces from, and even after that, there is FORScan programming...