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Ever since I bought my 03 gt my battery light goes on and off. The previous owner installed some uderdrive pullies and i have no clue as to what brand they are. Ive checked my battery and Im positive my alternator is fine bc im not having any charging issues and the car never has a hard time starting up. The light goes on and off but is on most of the time. Could these unkown udp's be causing my battery light to come on? If not what else could it be? I want to switch to the steeda udp's anyways but id still like to know whats causing the light to come on and off.