I am having steady brake and battery light as my engine runs what do I do? on 2002 Infiniti I35

This happened the day before yesterday and I replaced it a used Alternator of the same capacity and today it started again, PLS ADVICE ME ON WHAT TO DO NOW

by in Clinton, IA on November 25, 2012
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1 answer
ANSWER by , November 25, 2012
steady brake light...check brakes, steady battery light...check alternator.