I installed a new lights and a power outlet for a Garmin. This lights us MR16 bulbs, so you can even use LED or any MR16, I use LED's in my 84 R100RT and might switch on the NT too.
These are designed to mount on the front of a GoldWing, but if you invert them you can install on the bottom of the NT Fairing. The curve of the mount is almost perfect and will fit very nicely if you mount like I did. In the daylight I post some pictures.