Noticed head lights and dashboard lights getting dimmer over the course of a week. Then on my way to work, radio & lights barely worked. Then car wouldn't start after parking it at work. Turns out the alternator went bad and the lights & radio were being powered by the car battery. New alternator fixed it. Also had to put a second alternator in it because the first new one was junk, it would drop voltage if i rev'd up the engine. everything was cool after the second alternator.