How do you know if your starter went out or is it your alternator?

if it is your alternator your battery will be low or dead... your lights will be dim when turned on. , if you cannot crank your car or it will crank slowly it may be your starter or battery cable connection or a loose connection in the link........

, a low battery caused by an alternator will usually click rapidly the starter solenoid, when trying to start, and the lights will go out when cranking ..., for the most part turn on your headlights if they are dim the charging system or the battery is to blame .. hope this helps