Taylor, Jazzy has a FretFX aftermarket LED set on his Europa, That's the battery pack on the back of the headstock and the clear tube running to to the front contains the LEDs and attaches to the top of the neck. The LED array and the battery pack attach with an adhesive strip that doesn't mar the surface, but can't be shifted or transferred once it's attached. I've got them on two of my Alembics as well, and I love them (my third Alembic has the factory installed LEDs). Here's mine on my Epic (they were originally called "Hot Dotz"):

and here's my Distillate:

They're available in red, blue or green, are MUCH less costly than retrofitting, and use 1 or 2 AA rather than 4 9-volt batteries (depending on LED color selected). Here's a side shot of the Distillate:

I don't have a headstock only shot of my fretless Epic, so here's me and my baby:

Mike