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Car electrical system diagram: 1 - headlight; 2 [Installed on some vehicles.] - fog light; 3 - ambient air temperature sensor; 4 - electric fan of the engine radiator; 5 - connector for connection to the engine management system wiring harness; 6 - underhood lamp switch; 7 [Installed on some vehicles.] - spare block for connecting a sound signal with one output (the negative terminal is connected to the body); 8 - sound signal; 9 - windshield washer fluid level sensor; 10 [Installed on some vehicles.] - brake pad wear sensor; 11 - Low oil level sensor; 12 - generator; 13 [Installed on some vehicles.] - underhood lamp; 14 - temperature indicator sensor; 15 - starter; 16 - battery; 17 [Installed on some vehicles.] - fog light relay; 18 - coolant level sensor in the expansion tank; 19 - Low brake fluid level sensor; 20 - Reversing light switch; 21 - Windscreen wiper motor-reducer; 22 - oil pressure sensor; 23 - rear window washer electric pump; 24 - Windshield washer electric pump; 25 - instrument panel; 26 - fuse and relay mounting block; 27 - Brake light switch; 28 - ignition relay; 29 - ignition switch (lock); 30 - glove compartment lighting lamp; 31 - Glove compartment light switch; 32 - Rear window heating switch; 33 - Rear fog light switch; 34 [Installed on some vehicles.] - fog light switch; 35 - Combined side light and headlight switch; 36 - Hazard warning switch; 37 - steering column switches; 38 - Instrument lighting brightness controller; 39 - headlight range control handle illumination lamp; 40 - socket for connecting a portable lamp; 41 - side direction indicator; 42 - Interior light switch (front door open sensor); 43 - Interior light; 44 - Electric fan of ventilation and heating system; 45 - additional resistor of the electric fan of the ventilation and heating system; 46 - switch for operating modes of the electric fan of the ventilation and heating system; 47 - illumination lamp for the handle of the mode switch of the electric fan of the ventilation and heating system; 48 - heater control unit illumination lamp; 49 - On-board control system indicator unit; 50 [Installed on some vehicles.] - trip computer; 51 - Interior light switch (rear door open sensor); 52 [Installed on some vehicles.] - socket for connecting the clock; 53 - fuel module; 54 - ashtray light; 55 - cigarette lighter; 56 - Interior light; 57 - Parking brake indicator lamp switch; 58 - rear light; 59 - Number plate light; 60 - additional brake light; 61 - heating element for rear window heating; 62 - rear window wiper motor-reducer; A - terminal numbers in the connection blocks
Note: Vehicle electrical system diagram (depending on the year of manufacture and configuration) the colors of some wires and the amount of additional equipment may differ from the diagram shown.