I bought a pair of cold cathodes a couple years ago. I was going to use them in my car originally. Theyre for computer modding. A 12 inch neaon shouldnt be difficult to mount, but the problem is that you will see the tube because the light is emitted in a 360 degree pattern. To solve this you could use a piece of U channel, you can find it in black in the plastic trim section of Home Depot or Lowes. Your CCs should have a block of plastic at either end for velcro mounting (mine did) and to fit it in the channel you should pop those off. Dont mount them with 2 way tape because it will eventually fall off. I use self tapping screws into the underdash plastic.
It wouldnt be hard to mount them under the seats, but its all dependant on if you want the tubes hidden.
You can hook them all up to one switch and run that switch to power from the ignition harness, or you can even tap into the +12 and GND from behind the cigarette plug so that it uses the cig fuse and you dont have gaudy plugs. I would wire them to a differant switch the put the switch in the glove box, in the center armrest, under the dash on the left, somewhere not noticeable.
I ran the leds in my buick off of the dome light circuit. I made a cardboard plug to fit into the 194 socket of the pre-existing underdash lightbulbs. I unplugged the constant power from my rear view mirror lights so when I want the glow on by itself I just turn on the dome lights and then switch off the ceiling light manually.
"-@--------@--" 1990 SSE " Black Ice " 220,000+ kms, GX3, sunroof
16" Streetwear Diablo wheels | Blazer Fog Lamps | Silverstar 9005 low beams | Mesh Grille | STB | '94 Top end | Delco Type 2 Ignition | Blue interior LEDs | LED 3rd brake light | Auto-dimming rear view mirror | Pioneer DEH-P7600MP | Rockford 5 1/4 Components and 6x9s
Daily driver : '95 Buick Regal Custom | Blue under dash LEDs | Infinity 5 1/4 components | 8 Inch sub under dash | 12 inch Bazooka sub in trunk | Rockford 4 ch amp | Trunk mounted EQ | Pulsing trunk LEDs