I performed this mod only relocating the LED to the top so I could see it if the TX was facing away from me. I too used the blue LED from the instructions and well, lets kust say its soooo bright that it can double as an aircraft search light when flying at night. Ok maybe not that bright but it is a nice little flash light. I'm glad I mounted it on top now because if that thing was pointing at my face on the front of the radio it could make it difficult to read the LCD display. I would suggest to anyone to perhaps choose a dimmer solution. Just make sure it is a 3.7 VDC LED. But thanks for the info, its a nice mod!