Yesterday my car took a long time to start and went downhill from there...almost all of the lights on the dash stayed on with the DAC and trac control blinking. Also, only the high beams would turn on, the low beams would not. The other (really) strange thing was that the speedometer and radio would only work when I was breaking or deaccelerating...they would turn off when I accelerated. I stopped by Autozone and plugged in the car...no errors. We tested the battery...no issues, however, the battery tester indicated that the alternator may be bad. I drove it home. This morning the car started fine and halfway to work more lights came on and all of the lights in the car started to brighten and dim. HELP.