Car electrical circuit diagrams
1. Power scheme
* Battery
* Generator
* Starter
* Fuses and relays
2. Ignition circuit
* Ignition coil
* Distributor
* Spark plugs
* Engine control unit (ECU)
3. Lighting scheme
* Headlights
* Tail lights
* Brake lights
* Direction indicators
* Side lights
4. Diagram of instruments and sensors
* Speedometer
* Tachometer
* Fuel sensor
* Engine temperature sensor
*Oil pressure sensor
5. Heating and ventilation scheme
* Heater fan
* Heater radiator
* Air conditioner
* Climate control
6. Audio system diagram
* Head unit
* Speakers
* Amplifier
7. Diagram of power windows and mirrors
* Electric window motors
* Power window switches
* Mirror motors
* Mirror switches
8. Central locking diagram
* Central locking control unit
* Actuators
*Remote control
9. Security system diagram
* Immobilizer
*Alarm
* Motion and glass break sensors
10. Diagnostic diagram
* OBD-II connector
* Trouble code reader
Where to find electrical diagrams
*Car service manual
* Online resources such as Mitchell 1, AllData and Haynes
* Books with wiring diagrams for specific car models