Q: Charging system warning light.

All my problems started with the car not wanting to run and the head lamps and interior lamp and radio were getting dim bright dim bright and not long after car would stall out and die on me. we decided it must be that the battery killed the alternator because the battery was done for. I got a new alternator and used a different battery problems got worse from dim light dim light to more or less flashing on and off including the clock radio inside the car. So a friend of mine got me a good battery and another alternator. we'll when I turned the key the car started up nice with no problems sounded better no dimming or blinking lights. I had went not too far down the road when my battery charging warning light popped up and light went dim and dimmer and dimmer and then the car died leaving me stranded. we couldn't just jump the car because the alternator does not seem to be keeping the battery charged . . . also when battery dying and warning pic comes up the car gears won't change

My car has 200000 miles.
My car has an automatic transmission.