In some moderne vehicles have ability to adjust light intensitivity by driver comfort
Sun visor
Lights lower on the door edge
Light under the side mirrors
Interior lights
Nota:
This helps you to fasten seat belt, write something down, or look for lost items in the car
Information system
Multimedia
Communication system
Nota:
Emergency buttons
Mobile information system
CD readers
Radio
Telematics
Trip recorder
Nota:
This device records trip distance, speed, and the time, it also incorporate with warning lamps, which will trigger when crossing legally stated speed limit. Also data is saved on tachograph.
Vehicle rear compartment
Windshield
Center console
Board computer system
Nota:
In modern car there are about 20-40 different ECU's, and they are controlling electrical devices on board