Polywave, I do not have one of these installed, nor have I complained about flickering lights (you seem to have the wrong end of the stick).
I am planning on putting the Evosport pulleys on my car, should this affect the lights (dimming etc.), then I may half heartedly consider something like this if the flickering/dimming lights annoys me too much.

Has anyone out there had any noticeable affects like this from pulleys?