How to Test Alternator 2020 Ford Mustang 5.0 (2015-2023)

How to test alternator is good or bad 2020 Ford Mustang 5.0 (2015-2023). The battery terminal voltage is read which should be roughly 12.50 volts when the engine is not running. When the engine is running the voltage should be at least 14 Volts but ideally 14.50 volts,. Any voltage over 15 volts DC is overcharging and there is a bad voltage regulator.

[@Ps5GamerGuy06]

Mustangs have a smart alternator. Not always 14.5

[@joeybalogny6095]

You're right bms manages it if you were to run the car for 10 or so minutes the voltage is around 14.0 volts as long as it's within charging range under 12 volts usually service charging system now will display.