Altima acting screwy, need advice.

[mbrown2097]

2 weeks ago, brake light began flickering. 1 week ago, battery died. Replaced same day.Immediately after battery replacement, brake light and battery light began flickering in unison. I figured the alternator was going bad so I replaced. Battery light is out now but brake light still flickering. Checked fluid level and it was low. I topped off. Brake Light still flickering. Did I stumble into 2 problems at the same time? Alternator and Master Cylinder? Any thoughts?

[3Q Jay]

what do your voltage and current measurements say about the battery and alternator?

you did buy a genuine nissan reman alternator from a sponsor right?