I have a 1993 honda accord and its not charging... do I have an external voltage regulator and if so where is it located

Internal--located inside the alternator. Usually, the regulator is okay. Brushes and rotor slip rings are usually what need attention. Here's how to you can likely rebuild the alternator:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-6.html#post666293