Battery will not charge

I bought a new alternator about two months ago and a new battery at the same time. The alternator still was not charging the new battery. So then I ordered the voltage regulator plug in the ten plug that goes on the other side of the alternator and I drove it to O'Reilly's because it still was not charging correctly. So then they put the tester that they have on it had and said it was a alternator but then when I took it off they tested it inside and said it was not the alternator that it could have been the wiring. So they did not sell the wire for the alternator so I had it jumped off and I tried to head home with it, but I ended up stranded across the road beside a convenience store. Is there a fusible inline fuse or something that I am missing is that what could be what the problem is?

How do I teel if my alternator is bad or if its my voltage regulator. The trouble light is on and the battery charge gauge is reading in the discharge area. The truck still started and ran for about a week and a half. The battery is about 8 mounths old. I am no great mechanic but need to try to fix myself. Thank You.

I had this problem it was the fusible link was blown, FYI.

I all of a sudden started losing lights, stereo, and all electrical components my a/c quit blowing cold air and even on hi was blowing slowly then the truck died completely I
had somoeone jump me and started up drove a few blocks and it died again got a second jump and allowed to charge a little longer drove a few more blocks than before and it died again. I figured it was the alternator not charging the battery next morning replaced alternator and fully charged battery before cranking up the truck, it started right up but when I put my volt meter on battery it only read about 12.5 volts and was slowly but steadily dropping voltage

Two days ago driving down the road all lights dimmed really quick. Realizing that I believed the alternator just fried got to a safe place that I could work on it took both battery and alternator and had them tested both were bad. Come to find out it has a 1989 alternator with external voltage regulator in it. Changed alternator and battery, but not voltage regulator. Last night it sat for maybe an hour and a half (nothing was left on) tried to start it and all I heard was a loud pop (one click) noise coming from the voltage regulator and nothing. Tried to jump it and did same thing one click nothing. Tapped on starter solenoid, test diode fuses and every other fuse. Battery is completely drained. What could be the issue or how can I fix this?

I managed to get it figured out the screw that allows it to engage was not positioned correctly. Now that I have it set I am going to find something to keep it from moving and call it a day.

I cannot make it ten miles down the road before it shuts off. I have replaced alternator and the battery is brand new. It is also not shifting right, it just revs up and I have to put it into drive. Please help me.

New alternator not charging.