Have a 91 cadillac sedan deville left the inside

Question edited for clarity and remove non-existent word 'dint'.
Question moved to model category.

Intermittent faults are the hardest to diagnose. The only way is to find an auto electrician and his pro grade scan tool computer can record what is happening and what causes it? The first thing I would do is check all the grounds.

https://www.google.com/search?q=auto+electrician+near+me

https://www.google.com/search?q=1989+cadillac+deville+sedan.+alternator+not+charging+consistently

Did you replace those parts based on the trouble code? Or are you just throwing parts at it? What are the codes?

http://ricksfreeautorepairadvice.com/flashing-check-engine-light-is-serious/

alternator is overcharging the battery replace alternator

lower left side on driver's side near the hood release.

Just driving the car so it can relearn on its own is all you should have to do, other than preset radio staions, seat & steering wheel positions you shouldn't have to anything.

you need to verify the dome lights are turning off before you walk away,something is draining the battery.check you car out after driving it and make sure radio and any other things all shut off.

Sounds like the battery is weak or the alternator isn't providing enough amps to keep the engine running and power the lights at the same time.

Replace the brake light switch - sticking . Hope this helps

Check power connection by fuse panels under hood just below the center of windshield

I had same problem and turned out my alternator plug kept falling out. ground was good but the plug with the clips was bent and kept falling out. had to make sure it was fixed by someone who knew what they were doing and had to take it to the dealer. charged me $75 to rewire anew plug on, took them one hour. have your battery and alternator tested at local Autozone or AAP