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E46 (1998-2006) E46 (1998-2006, petrol) E36 (1990-2000) E30 (1982-1994) E21 (1975-1983)
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  • Scheme 4. General electrical equipment starting with 1990 models 320i Kat., 3251 Kat.

Scheme 4. General electrical equipment starting with 1990 models 320i Kat., 3251 Kat. (BMW 3 Series E30)

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Schematic diagram IV. General electrical equipment from 1990 models 320i Kat., 3251 Kat.

Schematic diagram IV. General electrical equipment from 1990 models 320i Kat., 3251 Kat.

Schematic diagram IV. General electrical equipment from 1990 models 320i Kat., 3251 Kat.

Schematic diagram IV. General electrical equipment from 1990 models 320i Kat., 3251 Kat.

E1 Left rear light 14

E2 Rear light right 16

EZ Switch board backlight 19

E4 Rear window heating 23

F4 Fuse for direction indicator signaling 48

F5 Fuse for wiper, washer, intensive headlight cleaning system 40

F7 Fanfare fuse 28



F8 Rear window heating fuse 23

F9 Fuse for electrical equipment of the reverse light motor 25

F10 Instrument fuse 20

F11 Fuel pump fuse, fuel pre-priming pump 72

F12 Fuse for radio receiver, fault memory polling system, instruments 31

F16 Seat heating system fuse 14

F17 Fuse for sliding roof panel, electric window 6


F19 Fuse for electric drive of outside mirror, air conditioner 18

F24 Fuse for emergency signaling system (30SA24) 49

G1 Battery 1

2 Generator 2

H1 Fanfare II 28

H2 Fanfare I 26

H4 Front right direction indicator 62

H5 Rear right direction indicator 63

H6 Rear left turn signal 64

H7 Front left turn signal 65

K2 Fanfare Relay (in the junction box) 28, 29

K5 Seat heating and sliding roof panel relay (in the junction box) 13, 14

K7 Relay for heating system fan, rear window heating (in the junction box) 20, 21

K10 Control unit for operation of windscreen wipers and washers in interval mode (in the junction box) 34-36

K11 Engine start interlock relay (only with automatic transmission, behind the lower steering column trim) 7, 8

K12 Emergency signaling system relay (in the steering column) 58-65

M1 Starter motor 3, 4

M2 Windscreen wiper motor 36, 37

M3 Washer Pump 40

M4 Fuel Pump (only for 1.8i) 72

S1 Switch box (only with automatic transmission) 9-12

S2 Reversing light switch 14

S3 Ignition and parking light switch 16, 17

S3.1 Ignition switch

S4 Rear window heating switch 21-24

S5 Horn switch 29

S6 Windscreen wiper switch 39-46

S7 Hazard warning switch 51-53

S8 Headlight low beam turn signal switch

S8.1 Direction indicator switch 63, 64



W1 Tone bus in distribution box 1-75

X1 Main Wiring Harness - Engine Wiring Harness 20-Pin Plug (engine compartment) 2, 4, 25, 72, 73

X2 Special equipment connection connector, 26 contacts (behind the lower steering column trim) 6, 14, 31, 32

X3 Main wiring harness connector to ignition switch 9, 23, 25

X4 Idle Speed Increase System Connector (near the tunnel, automatic transmission wires) 9

X5 Main harness connector to reverse light switch, 2 contacts (near the tunnel, automatic transmission wires) 14

X6 Main Wiring Harness to Instrument Cluster Plug, 30 Pins (behind the lower steering column trim) 19, 23, 48, 49, 58, 59

X8 Pluggable connection, 8 contacts (in the junction box) 23, 28, 72

X9 Windscreen wiper motor connector 36, 37

X10 Headlight cleaning device connector 42, 43

X11 Main Wiring Harness Connector to Windscreen Wiper Switch, 6-Pin, (behind the steering column trim) 41-46

X13 Main wiring harness connector with turn signal and low beam switch, 13 contacts, (behind the steering column trim) 29, 58, 59, 63, 64, 68

X26 Speedometer Sensor Connector 72

X29 Ignition switch connector terminal 50 4

X39 Alarm system connector 73

This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
Article verified: Polikarpov Saveliy

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