Most cars have either an idiot light or a volt meter. This 1995 Buick Park Avenue has both in the same pod. The customer complains that the red light comes on intermittently, but the voltage continues to read just above 13 volts. Sometimes it’s dim or flickering, others it’s bright. It seems to be more prevalent when the headlights are off, rather than when it is under a heavier load with them or the A/C on. I have not had an opportunity to see the car. I’m hoping to get some ideas before she brings it to me. It has not failed to start.
So, what’s it trying to tell me?