Well Larry was a good idea in the beginning.
I install the LEDs without removing the fretboard
I'm not going to reveal my little secret on how I actually do this but its relatively easy if you know how and you have the right equipment and an engineering mind. I went to the school of hard knocks with this and it was about 20 necks before I perfected it to where it is now. Remember the trick is to make it absolutely flawless as if you've done nothing.
Think small as in SMD 1w small.
If interested contact me for a quote