How to check if my alternator is bad
Battery light stay on, just put new battery in
November of 2020. My idiot light doesn't
come on, the radio where it shows it's on or
off there's nothing on that my power
windows won't work, and my security light
You'll want to start the engine and open the hood. Then probe the battery terminates, both negative and positive with a multimeter set on volts. A properly charging alternator will register around 14V. Anything less than 13V is not good. With the engine off the battery should register 12 to 12.6 volts.
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