Ron, I had done a search for electroluminescent wire and actually found a couple places selling one variation or another. The one I wound up with is here:
www.glowire.com
I first bought a 5' length and a 2000hz driver. Brightness wasn't what I wanted, so I then bought a 4000 hz driver and the super bright wire. The super bright wire has some orange tint to it, while the other is more red. When I attached the regular red wire to the 4000 hz driver, it too was bright. However, the 5" I bought was a few inches too short for my sign so I used the super bright, which I had bought 6' of. The driver runs on a 9 volt battery, tho I may connect a power supply to it. The driver (there are several to choose from) also has a position for providing a flashing sign.
The radius you can bend to is fairly tight, considering the wire is pretty stiff, and wants to straighten itself out. The letter N in my sign shows the tightest bend you can get. Bend too far and the wire will no longer glow beyond that point. I wound up using a font with rounded letters for this reason.
Here are two shots with my under construction 4 track Northeast corridor "module" in place in front of it. Weathering and application of high tension wires are basically what it still needs.