I have a1981 ramcharger with a 318 motor I replaced the alternator and voltage regulator still not charging what whould be my problem

I have a1981 ramcharger with a 318 motor i replaced the alternator and voltage regulator still not charging what whould be my problem
The battery may not be able to accept a charge.
What is the voltage from the alternator? Are both ends of both battery cables clean and free from corossion, and are they tight?
Let us know.