Either the alternator you installed is defective or you wired it incorrectly. Check the voltage at the battery with the engine idling. You should read from 13.5 to 15.5 volts with a digital DC volt meter.
Have the charging system checked. Possibly loose or corroded wiring, a loose alternator belt, or a bad alternator.
Auto Zone will check your charging system for FREE. Go to any Auto Zone and have them check your Alternator / and charging system.
My lights were coming on when my alternator was going out. Test your alternator and charging system and replace accordingly.
The charging system is the alternator which is on and functioning anytime the engine is running. If not, then you have a problem with the alternator.
The charging system on modern cars has 2 parts. The alternator and battery. On older cars there is also the voyage regulator. On modern cars it is built into the alternator. The electrical system however has many more parts.Alternator, voltage regulator, and alternator belt. The batteries themselves are part of the cranking system, not the charging system.
replace the alternator if your system isn't charging.
You must identify which system among many.......
The alternator, belts, and wiring.
new alternator not charging the battery
any short in the electrical system will have an effect on the charging system
No, the battery light is coming on because there is a problem with the charging system. Most likely the alternator is failing. Most auto parts stores will check your system for free.
possible your alternator is going bad, get your charging system checked out.