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No. 1-1
Dave alex
Dave alex

There is multiple ways to test an Alternator, if you have a multimeter there is a simple test.
Put your multimeter on your battery which should read around 12.6 if your battery is good. Then start your vehicle. If the multimeter shows above 13.8V then there is a good chance your alternator fine. If it reads below 13v then there could be something wrong with either your alternator or a connection to it.
if your battery reads below 12V and the battery is around 5 years old. good chance your battery is bad