The high frequency and voltage that CCFLs run from, by the way (some tens of kilohertz and several hundred volts), means that they're very sensitive to cable capacitance. The more capacitance their cable has, the more power it'll suck away and the dimmer the light will be. If you bunch both fists around the floppy white wires running to a CCFL, you'll practically extinguish it; it'll probably only light at the cathode end where the wires enter the lamp assembly.