my battery light keeps blinking i need help before friday

[jdmcivics]

so when i start my car my battery light dims on and when i accelerate it turns off but when im driving at night with my lights on they dim a little i have remote start to.
i also have a sub hooked up and i took the wire off the battery + and started it still flashed could it be my fuse?

 

[purpej1]

your alternator is about to crap out

 

[jdmcivics]

omg i just put a engine in it lol and cv axel

 

[RonJ]

your alternator is about to crap out

He^ deserves an expensive prize for getting his answer in before the deadline.

 

[civic98ek]

alternator..