This is my first CUCV well first car. So i've read a lot of post on here and every once in a while i'll see a post with some one saying something about a seat belt buzzer coming on when you turn the key. Is this a mod or something that is suppose to happen and also with the door is there any courtesy light that comes on in these trucks when you open the door? Kind of off topic but are the seat belts suppose to tighten naturally because mine only tighten when the door opens.