Actually I've already done this, well for now I only have neons in the two vents in the middle of the dash (above the A/C controls)..I'm still waiting till I have the cash to get more neons for the other two vents. All you have to do is take apart the dash, and u can fit the neons inside the "tubing" from where the heat & A/C comes out. I used some velcro and electrical, which I still think might melt if I have the heat on for too long. I'm in the process of determining how to attach them better. But as for the wiring, you can easily run it all to the spot where the radio is, then from there, I grounded the - wire to a bolt under the dash, and the + wire is going to a switch in my lower console which is battery powered. I'm gonna get some pics when it's all done. The neons in the vents look really sharp at night.
Mike