I have a 2003 civic lx and the battery light was coming on so I had the charging system checked out by autozone and I needed a new battery and possibly alternator. I bought a new battery and the alternator was not giving out any juice so I also bought an alternator. After installing the new alternator, there was no problem yesterday. My girlfriend took the car to work and said the battery light would flash on for a brief second every once in awhile. What could be causing this issue? I cleaned the battery lugs before the new battery was installed and all the wire connections for the alternator looked brand new. Any help would be appreciated.