Battery light on?

Okay, here is a guide for checking the alternator itself. You need 14 to 14.5 volts at the battery while running.

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

I attached a wiring diagram for you to view. We need to do some testing to find out why it is not working.

Let me know when you have a voltmeter to do some checks.

https://www.2carpros.com/articles/how-to-check-wiring

Roy