I just bought my car and the first day i was driving it i was sitting at a red light and the battery light came on as the car died. Then twice on 2 different days all the lights came on (like when u first start the car) and all the gauges (engine temp, rpms, speedometer, and gas gauge) will drop all the way down for a few seconds and then everything works fine. When the lights come on it doesn't seem like its running differently.