>I want to use high voltage wires with the same thinkness and solder it..
>But my question is... will the ccfl still work when I extend the wires with 2 inches?
>I heard some story's that the ccfl wires have a specific resistance or something??
There is no need to worry about it. That's nothing.
Yes, it can be the part of the so called 'resonant tank', but the plus resistance and more important the plus capacitance is not significant. It makes the efficacy a little bit wronger....
But at the site of soldering use thick isolation - separate them from each other, and from ground, respectively.