Changed battery and alternator. Battery light is still on

Good afternoon,

It sounds like the alternator is bad but to be sure lets test it by following these videos and guides.

https://youtu.be/Z-p4dMJUpUw

and

https://www.2carpros.com/articles/how-to-check-a-car-alternator

I have uploaded the alternator wiring diagrams so you can see how the system works.
Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.

Thank you so much for your help. The alternator seems to be working fine. grounds all seem to be okay, I changed out the generator fuse and it started working.