96 sable battery light problem

Hey guys I have a 96 sable and at high speeds my battery light flickers, I think I need to change the terminals on the wires.

BTW I just got a brand new battery

If your terminals are fine and you got new battery, more than likely it's your alternator. Have your alternator check at autozone. They can check your alternator load while it is still in your vehicle. Check your serpentine belt to make sure it's not past it's stretch limit.

Possible causes
Poor connections
Loose/slipping belt
Alternator starting to go bad