Replaced alternator 2 times first worked week second 1 day. Have been told by a on 2002 Kia Spectra

Have been told by auto parts store that alternator is fine but will not produce power in car. Read about adding chip any Idea what it is and where to purchase.

Asked by for the 2002 Kia Spectra
No idea what chip would affect the alternator, is a performance chip? If so I doubt if there is even an after market chip for a Spectra. If the alternator does not charge the battery when it is fitted to the engine and the engine is running you would need to check for power at the alternator from the ignition. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate
Not sure how far back their information goes back but Kia as a car manufacturer put a lot of great technical information and work shop manuals on line for free for Kia owners.