Left alone, this problem will eventually lead to the alternator burning out altogether.
First, well look at IL, which, in this case, is 50.
The next number is 120, which is IR or the amperage output at the rated test speed.
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In this case, this alternator is capable of putting out 120A @ 6,000 RPM.
Since this is the rated test speed, this number is usually used for the alternators rated output.
Do You Need a Higher Output Alternator?
In most cases, alternators are replaced due to normal wear and tear.
