What causes the battery light to come on while driving? on 1998 Ford Contour

It was only happening every once in awhile but now is alot more frequently. It makes no different if the radio or heater is on, the light still comes on and off.

Asked by for the 1998 Ford Contour
faulty alternator
I agree with both #1and2
2 answers 1 comment
ALTERNATOR IS STARTING TO GIVE OUT IS MY GUESS.