A few questions about electrics

Hello everybody, I’ve had a Renault Megane I 1.4 16V for over 2 years! So far I’m really happy with the car. But for a few days the electrical system has been spinning. And that’s when the control lamp for the fog lamp starts to brake. I’m thinking about mass errors. Can anyone tell me where about that? And the rear windscreen wiper suddenly starts when the front windscreen wiper is on and I brake. Then the back will stop running again at some point, no matter where it’s standing. And it runs it I think it’s just because the little pears behind them are defective. And I have a display in the middle of the dashboard which doesn’t show anything. Are there any pears behind the broken ones? And what I noticed is that he has been stealing the doors for a week when I’m driving away. I know that with newer cars, but there was already that in fashion. ll? One last question: How do I find out what everything belongs to the equipment of my car? Questions about asking! I apologize for this, but I really like the car and want to drive it a few more years. That’s why it would be really great if someone could help me out there. I don’t want to leave hundreds of euros at the dealer’s. Thanks in advance.