I added EL wire to my Tron Pro ramps. While it's not the CPU controlled color changing fiber wire used in the LE version, it is still really cool. Everyone that sees my tron comments on how awesome the ramps look.
The cost is around $100. I got it here:
I ordered the EL wire unit + $20 power supply + 30 feet of wire. The wire is 2.6mm so it's very thin. It is also a bit brighter than the LE's fiber, so that's pretty neat. I went with blue, which matches very well the theme of the machine.
For installation, I ran a single run. There are already playfield holes drilled for the LE's fiber wire. I came up, around the first ramp, down back into the playfield up and around the second ramp. It's a single run. The 30 feet of wire was too much. But I'm not sure if 20 feet would have been enough. The excess wire is just in the cabinet. To attach the wire, I experimented with shoe goo (disaster), was pondering drilling holes in the ramps just like in the LE and using tie straps, but I ended up just using scotch tape, which is almost completely invisible, easy to remove, and holding the wire very well. In fact, it looks better than the tie straps Stern used on the LE because you can see those. For power, I just plugged the unit into the service port in the machine. I have an arcade switch that turns all my machines on and off but cutting power to them so using the access port was no big deal for me. But for normal folks, you'll want to arrange something else because the access port stays powered after the machine is turned off. Perhaps the best bet would be to use a smart power strip, plug the pinball into the main port, and the EL plug into a slave port. Then the power strip would power off the EL wire when the machine stopped pulling juice. Alternatively, one could use some resistors to reduce the 12v line to 9v current and power the EL wire using the machine's 12v.
Here is a picture of the finished machine with the wire.
Here is a picture showing inside the coin door where the excess wire is run.