Here is a MUCH easier way from a even cooler look.
Paint your table high gloss black, lay out your grind on the tabletop and decide on your preferred width of
EL Wire.
Use a router to cut channels in your grid pattern deep/wide enough to hold your EL Wire in place. Note: you can run your channels over the edge and under the table or have them stop an inch from the edge, drilling a hole to thread the EL Wire through to the underside of the table.
Flip the table over and secure the loose EL Wire using tape, cord clips or any other handy items hanging around to the bottom of the table.
Connect the EL Wire to the
AC-DC adaptor and secure the pack to the under the table and run the cord down a leg.
Turn the table over, place glass on top and display LightCycle.
The great thing about this setup is that it is simple, all the works are hidden and by leaving the excess EL Wire intact you make things easier for you while casting a cool blue glow under the table.