Good afternoon. Starting about 3 months ago, on occasion, the voltage dial would go way down and back up as the car picks up speed and other times it works perfectly and on some occasions the faulty voltage indicator would show up and the battery gets drained, the battery is new. If I turn the car off and restart it, it is usually okay for that trip and may or may not happen for a time or two, any ideas, alternator malfunctioning or some other electrical part? My number is 443-223-6840 if you would prefer to call or text. Any advice is very much appreciated, thanks!