A car’s electrical system consists of the following main components:
Ignition system:
* Battery
* Starter
* Generator
* Ignition coil
* Spark plugs
* Ignition wires
Power supply system:
* Alternator
* Voltage regulator
* Fuses and relays
* Battery
Lighting:
* Headlights
* Tail lights
* Brake lights
* Side mirrors
* Direction indicators
* Fog lights
Engine control system:
* Electronic control unit (ECU)
* Sensors (eg crankshaft position sensor, coolant temperature sensor)
* Actuators (eg fuel injectors, throttle body)
Comfort and convenience:
* Electric windows
* Electric mirrors
* Central locking
*Alarm
* Audio system
* Air conditioning or climate control system
Safety:
* Anti-lock braking system (ABS)
* Electronic Stability Control (ESP)
* Airbags
* Immobilizer
*Parking sensors
Other components:
* Cigarette lighter sockets
* Windshield washers and wipers
* Car radio
* OBD (on-board diagnostic) connectors
* Navigation system
* Rear view cameras
* Wireless communication systems