Hey.. oh my god no.. lol Take your alt to a place that rebuilds them. The parts inside are cheap, MAYBE $50 total labor included. Did that on mine and its fine. The battery light means there is a problem in the charging system. Never heard of an amplifier in the charging system. never seen it. And this is my 3rd SHO.. anyway let me know what happens, anyone else will want 200 bux plus for an alternator. It's a mitsubishi alternator. =) Only part like it on the car.