My bro had a '95 Accord LX coupe, i/h/e and pulleys, with a pretty power hungry audio system in it. I never noticed his lights dim at night when the car was idling (5sp*), although he also had a gigantic capacitor in the system. I don't think he had done anything special to his charging system.
* I only mention 5sp because I've noticed that the autos tend to idle at a slightly lower rpm than the manuals.
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