Charging issues

I am pretty sure I have a charging problem because it just seems to run off the battery till it dies. Everything is new in the engine compartment even the wiring harnesses , when I start it and check it with a meter it reads the exact same as when I test just the battery without it running . This has me going nuts !!!
How about you stop dancing and tell us some specifics?

What WAS the reading? (reading(s) you took?) And under what conditions?

Do you know how/ what have you tried in the manner of troubleshooting?

What exactly do we have here, AKA what is the alternator off of, and what are you using for a voltage regulator? Are you using the stock 65 stuff or what?