Legend of the electrical equipment diagram
1 - Right front turn signal; 2 - right low beam headlight with side light bulb; 3 - right high beam headlight; 4 — point of connection to the "mass"; 5 - right fog light1); 6 - right sound signal; 7 - left horn; 8 - left fog light1), 9 — point of connection with the "mass"; 10 - Left high beam headlight; 11 — left low beam headlight with side light bulb; 12 - Left front turn signal; 13 — underhood lamp; 14 — underhood lamp switch; 15 — underhood lamp socket; 16 — windshield washer motor; 17 — battery; 18 — fog lamp block; 19 — mounting block: a — high beam headlight relay; b — low beam headlight relay; c — relay for switching on sound signals; d — battery charging circuit relay; e — fog light relay; f — engine connector; g — diagnostic socket; h — terminals for connecting the windshield washer motor; 20 — ignition coil; 21 — ignition distributor; 22 - socket for connecting a tester with a wire and a sensor; 23 - generator; 24 — starter; 25 — oil pressure warning light sensor; 26 — coolant temperature gauge sensor; 27 — brake fluid level indicator lamp switch; 28 — gear shift switch with gear indicator2); 30 — starter relay2); 31 — gearbox switch connector2); 32 - Reverse light switch; 33 — heater fan electric motor; 34 - Windshield wiper motor; 35 - soldering point "58b"; 36 — center console connector; 37 — terminals for connecting electric motors for window lifters, antenna and sunroof; 38 — rear window heating switch; 39,40 — heater control switch illumination lamps; 41 — heater control switch: a — option with clock; b — option with clock backlight; 42 — map lighting lamp1); 43 — glove compartment lighting lamp; 44 — cigarette lighter; 45 - radio receiver; 46 — point of connection with the "mass"; 47 — connector; 48 — Windshield wiper relay; 49 — flasher relay for direction indicators and hazard warning lights; 50 — Windshield wiper switch connector; 51 - Windscreen wiper switch; 52 — hazard warning switch; 53 — ignition switch connector; 54 - ignition switch; 55 - Sound signal switch; 56 — Rear fog light switch; 57 — contact "50" of the anti-theft device; 58 — contact "P" of the ignition switch; 59 - Fog light switch; 60 — connector for turn signal and headlight switch; 61 — direction indicator and headlight switch; 62 - External lighting switch; 63 - three-plug socket; 64 — connector "1"; 65 — terminals for connecting the fuel electric pump; 66 - soldering point "58b"; 67 - soldering point "31"; 68 — point of connection with the "mass"; 69 — lighting lamp "1"; 70 — lighting lamp "2"; 71 — terminal for connecting the clock; 72 — instrument cluster: a — oil pressure warning lamp; b — coolant temperature indicator; c — connector; d — control lamp (blue color) turning on high beam headlights; e — control lamp (red color) battery charge; f — tachometer; g — gear indicator KP2): "P" — white control lamp; "R" — red indicator light; "O" - white control lamp; "A" - green control lamp; "1" - green control lamp; "2" - green control lamp; h — speedometer; i — fuel reserve indicator lamp; k — fuel level indicator; l — brake fluid level indicator light; m — direction indicator lamp; n — connector; o - additional resistance; p — additional resistance; 73 — Parking brake indicator lamp switch; 74 - Brake light switch; 75 — ceiling light switch in the right front door pillar; 76 — ceiling light switch in the left front door pillar; 77 — ceiling light switch in the right rear door pillar; 78 — ceiling light switch in the left rear door pillar; 79 — rear window heating element; 80 — interior light; 81 — Luggage compartment light switch; 82 — luggage compartment light; 82 — luggage compartment light; 83 — trunk lighting connector; 84 — fuel level sensor; 85 — point of connection to the "mass"; 86 - Right license plate light; 87 - left license plate light; 88 — left rear light: a — direction indicator; b — red signal light; c — reverse light lamp; d — brake light bulb; e — rear fog light; 89 - right rear light a - direction indicator, b - red signal light; c — reverse light lamp; d — brake light bulb; 90 - Front carburetor starting device3); 91 - Rear carburetor starting device3); 92 — ground connection point on the body; 93 - ground connection point on the engine; 94 — Rear window heating element connector; 95 — point of connection with the "mass"; 96 — thermal time relay block4); 97 - Thermal time relay4); 98 - starting nozzle4); 99 — Front starter starter connector5); 100 — Rear carburetor starter connector6); 101 - voltage regulator7).
Notes:
- 1) Additional equipment
- 2) For cars with automatic transmission
- 3) Except BMW "520i"
- 4) On the "520i"
- 5) Ground connection point on "520i"
- 6) On the "520i" fuel pump connector
- 7) On BMW "525", "528"
Wire color designation:
- BL — blue;
- BR — brown;
- GE - yellow;
- GR — gray;
- GN - green;
- RT - red;
- SW - black;
- VI - purple;
- WS — white.
The first letters indicate the color of the wire itself, and the second letters indicate the color of the stripe on the wire

