Ignition system
* Spark plugs
* Ignition coils
* Ignition control module
* Ignition distributor (in older cars)
Fuel injection system
* Fuel injectors
* Fuel pump
* Fuel filter
* Engine control module (ECU)
Charging system
* Generator
* Battery
* Starter
* Voltage regulator
Lighting system
* Headlights
* Tail lights
* Brake lights
* Turn signals
* Turn signal relay
Alarm system
* Klaxon
*Beep
* Immobilizer
Automatic control system
* Air conditioner
* Window lifters
* Windshield wipers
* Electronic gas pedal
* Active cruise control
Security system
* Airbags
* Seat belts
* Electronic stabilization systems (ABS, ESP)
* Rear view camera
Other electrical components
* Radio receiver
*Navigation system
*Dashboard
* Electric seats
* Heated mirrors
Electrical wiring
* Wires and cables
* Connectors and sockets
* Fuses and relays