What is the construction and purpose of automotive electrical systems?

Automotive electrical systems are a set of components responsible for starting, charging, powering consumers, and controlling vehicle electronics. They include, among others, the battery, alternator, starter, fuses, relays, controllers, and wiring harnesses. These components are located in different parts of the car and work together through connectors and signal buses.

What are automotive electrical systems used for?

Automotive electrical systems are used to supply energy and transmit control signals to vehicle components. Thanks to them, it is possible to start the engine, charge the battery, and operate lights, windows, air conditioning, and safety systems. A fault in one circuit can affect not only comfort but also the correct operation of other modules.

What role does the wiring harness play in a car?

The wiring harness is an organized set of wires, covers, and connectors that connects individual consumers and controllers in the vehicle. It is used to transmit power, ground, and signals between modules. Its construction depends on the body version, equipment, and mounting location, so when replacing it, you must compare the wire routing, plug type, and number of pins.

How to choose an electrical part for a specific car?

The safest way is to compare the OEM number, manufacturer number, connector type, and mounting location. It is also worth considering the engine version, year of manufacture, body type, and equipment, as the same model may have different variants of the alternator, starter, or controller. In practice, verification by VIN is very helpful.

What symptoms indicate a problem with the electrical system?

Typical signals include difficulty starting, flashing warning lights, dimming lights, unstable charging, or the failure of selected consumers. In some cases, controller errors, air conditioning malfunctions, or periodic power outages also occur. Symptoms must always be linked to a specific circuit and cooperating component.

How to take care of automotive electrical systems in daily use?

The basis is regular inspection of the battery condition, terminals, ground wires, and charging. It is also good to check the tightness of housings, the condition of harness insulation, and the cleanliness of contacts exposed to moisture. A quick reaction to the first symptoms of voltage drops or electronic errors makes it easier to avoid a major failure.

Automotive electrical systems

At Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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BMW 3 X1 Series E91 LCI E84 Switch Cluster Cruise Control Stalk Unit 6989588

€161.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4M0959651

Front Crash Impact Audi A4 B9 A5 F5 Air Module Sensor Unit 4M0959651

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0907063P

Audi A5 8T Body Comfort Control BCM Onboard Supply Module Unit ECU 8K0907063P

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129009729

Mercedes W176 W207 W212 Keyless Door Lock Module ECU Unit A2129009729

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6807633

Control Unit BMW F01 F07 F10 F11 F25 Air Module ECU Unit Continental 6807633

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7H0907655A

Audi TT 8J Yaw Rotary Rate Sensor Speed Cluster Sensor 7H0907655A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8586540

BMW F30 F32 LCI 330d 430d N57N 258HP Engine Control Unit Module ECU DDE 8586540

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6926435

BMW 1 3 Series E87 E90 Mini R56 R57 Seat Control Unit Module Heating 6926435

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9150889

BMW E81 E87 LCI Front PDC Parking Distance Control Loom Wiring 9150889

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1728100011

Mercedes W176 W204 W212 Navigation Control Unit Module NTG 4.5 A1728100011

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6952914

Wiring Loom BMW E65 E66 Cables Rear Bumper PDC 6952914

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9248298

BMW E88 E93 LCI ECU Control Unit Air Module 9248298

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7794908

Preheater System Lead BMW E87 E90 E91 Diesel 7794908

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6988555

Light Control Panel BMW E60 E61 E70 E70 E71 LCi Light Switch 6988555

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9288770

BMW F20 F21 F22 Mid Range Sound Speaker Stereo HiFi 9288770

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009006713

PDC Module Mercedes W176 W246 Parking Assist Distance Control Unit A0009006713

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9065420518

Mercedes-Benz W639 W906 ESP Yaw Rotation Rate Sensor Control Unit A9065420518

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3414122

BMW X3 E83 Sensor Air Module Front Impact Crash Sensor 3414122

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9262753

BMW F30 F31 F80 M3 Dashboard Central Information Display Screen 6,5" 9262753

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 411033

iPod Most Interface BMW E60 E65 E81 E87 E90 Module Alpine 0411033

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1569005303

Mercedes W176 Body Control Module BCM Control Unit ECU A1569005303

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9350707

BMW F15 I01 Mini F55 F56 F57 PDC Module Parking Assistant Control Unit 9350707

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6971961

BMW E87 ECU Body Control Module L2 ECU Junction Box 6971961

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9153802

BMW X5 E70 Footwell Light Module Control Unit ECU FRM II NSW Lear 9153802

€146.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6901469

BMW E60 E87 E90 F10 F30 Relay Electrical Unit Black 4 Pin Tyco 6901469

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8638551

BMW F20 F21 F22 F30 F32 LCI Integrated Supply Module Unit 8638551

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9146710

BMW X3 Z4 E83 E85 E86 Radio Business CD Player Control Unit 9146710

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3449504

Mini Cooper One R55 R56 Electrical System Fuse Distribution Box 3449504

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6964607

BMW 1 3 X1 SERIES E81 E87 E90 Control Unit Airbag ECU NO CRASH DATA 6964607

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6394460446

Mercedes Vito W639 PDC Parking Distance Control Unit Module ECU A6394460446

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9244426

BMW X5 E70 Rear Bumper PDC Cables Wiring Loom Set 9219647

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9807169

Mini Cooper One R56 R55 R58 R60 R61 Air Module Control Unit ECU 9807169

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9387262

FEM Module BMW F20 F21 F22 F30 F31 F32 F36 Body Control Unit ECU LR01 9387262

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9177975

BMW Mini Cooper One R55 R56 R57 Power Folding Wing Mirror Module ECU Control

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7P0907652

Yaw Sensor Audi Q7 4L Rotation Rate Unit Module 7P0907652

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0971250N

Audi A3 8V Volkswagen VW Golf Mk7 Negative Cable Ground Wire Harness 5Q0971250N

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7793201

BMW 3 X5 X6 Series E70 E71 E90 E91 E92 E93 Lead Preheater System 7793201 Diesel

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0907530AA

Audi A3 8P Body Gateway Module ECU Control Unit 1K0907530AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1699000500

Mercedes W169 W245 Door Control Module Front Left N/S A1699000500

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1504536

Pressure Hose Mini Cooper One Cabrio R50 R52 R53 Compressor Condenser 1504536

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6858017

BMW F10 F11 LCI Control Unit EMF Module 6858017

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6C1T-14B056-AE

Ford Transit MK7 Air Module ECU Control Unit 6C1T14B056AE

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6927572

BMW X3 E83 Z4 E85 Wiring Seat Occupancy Cable 6927572

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2229055804

Mercedes CLA C117 W176 W205 Aerial Antenna Amplifier Unit A2229055804

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0951253A-1

Seat Skoda Audi VW Polo Multi Use Control Relay 4 Pin 645 4H0951253A SET X2

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469009413-1

Mercedes W176 W246 Control Unit Body Control Module ECU A2469009413

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2755516

Battery Mounting Bracket Mini Cooper R55 R56 R57 R60 R61 Clamp Bolt Holder

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9381305

Radio Professional BMW F20 F21 F30 F31 CD Player DAB Bluetooth 9381305

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7127282

BMW X5 Series E70 Rear Trunk Battery Cover Tray Storage Box 7127282 51477127282

€23.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 9374506

Body Control Unit BMW F20 F21 F30 F31 F32 Module REM 9374506

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2038700026

Mercedes W203 ECU Control Unit Crash Impact Sensor Air Module A2038700026

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T0035223AH

Audi A4 B8 8K A5 8T Amplifier Audio Sound Booster Module 8T0035223

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0038207726

Mercedes W212 Siren Alarm Horn Signal Module Unit A0038207726

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3C0937125A

Volkswagen Tiguan 5N Engine Bay Fuse Relay Box Terminal 3C0937125A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6940236

BMW E90 E91 E92 LCI AUX USB Lead Cable Wire 6940236

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9278279

Mini R55 R56 LCI Instrument Cluster Speedo Navigation Display Screen 9278279

€99.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0365457032

Mercedes C209 W211 CLS C219 Steering Wheel Module Control Unit A0365457032

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9248096

Air Module BMW F01 F02 LCI F06 F10 F11 F13 ECU Control Unit ECU 9248096

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8E0035411B

Audi A4 B7 Door Speaker Tweeter Front Left Right N/O/S 8E0035411B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6989069

BMW X3 X5 E53 E60 E61 E83 PDC Parking Sensor Ultrasonic Schwarz Black 6989069

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6960259

BMW 1 3 SERIES E81 E82 E87 E90 E91 E92 E93 Flat Cable Wiring Wire CAS Start Stop

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0959593B

Audi A3 8V Door Module Control Unit Front Driver Side 5Q0959593B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7537365

Cable Wire BMW E60 E61 E81 E87 E90 Tubing For Clamp 7537365

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9380334

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 9380334

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8E0907279N

Audi A4 B7 Body Control Module BCM Comfort Control Unit Power Supply 8E0907279N

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1508927-1

Mini Cooper S R52 R53 Positive Battery Fuse Box Module B 6911180

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9134666

Seat Module BMW E87 E90 E91 E92 Control Unit ECU 9134666

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6977982

Mini Cooper R50 R56 R57 R60 Relay No Contact Taubenblau 6977982

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6981416

BMW E87 E90 E91 CAS 2 Control Unit ECU Key Reading Module 6981416

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9240943

Mini Cooper R55 R56 LCI R60 Electrical System Fuse Distribution Box 9240943

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9362395

BMW F20 F30 F31 F34 Electrical Body Control Unit Module REM V2 9362395

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469008819

Radio Head Unit Mercedes W176 W246 Audio 20 Media Player Navigation A2469008819

€265.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9231175

Diversity Antenna Amplifier BMW F30 F32 Rear Window DAB Module Unit 9231175

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3453954

Mini Cooper One R57 R58 Aerial Antenna Amplifier Diversity Module 3453954

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8583653

BMW F10 F30 F31 LCI N57N Wiring Harness Engine Glow Module 8583653

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9177773

BMW F01 F07 F10 F11 Battery Power B+ Distribution Box Rear 9177773

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129004402

Door Module Mercedes W212 E-Class Front Left N/S Control Unit A2129004402

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2048706826

Mercedes W204 ECU Control Unit Sensor Module Air Unit A2048706826

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009003704

Mercedes W204 W212 Tyre Pressure Check Monitor Control Unit Module A0009003704

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9337880

BMW F20 F22 F30 Rear Electric Power Distribution Fuse Box 9337880

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9270035

Antenna Aerial Amplifier Mini F55 F56 F60 Rear AM/FM DAB 9270035

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7808074

BMW E70 LCI F10 Alternator Generator Engine 180A Valeo N57 Diesel 7803724

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6945072

BMW E90 E91 E92 Bracket CD Changer Holder Amplifier Mounting 6945072

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7510738

Mini Cooper One R50 R52 R53 Ignition Coil Pack and Leads Set 2122435

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9306085

BMW F30 F31 Seat Module Control Unit Memory Front Left Right N/O/S 9306085

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9381445

Mini Cooper F55 F56 F57 IBS Negative Battery Lead Cable 9381445

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9133913

BMW Z4 E89 Roadster Convertible HiFi Speaker System Amplifier 9133913

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V0035874B

Audi A3 8V Multimedia Radio Sat Nav CD Player Head Unit 8V0035874B

€237.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9264923

BMW F01 F02 F10 F11 F13 Power Distribution Fuse Box Rear 9264923

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7515200

Mini Cooper R50 R52 R53 Battery Wire Cable Negative Earth Lead 7515200

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9346799

BMW F01 F02 LCI F10 Diversity Aerial Antenna Amplifier DAB 9346799

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009067900

Alternator Mercedes W204 W212 Diesel Engine OM651 Valeo 180A A0009067900

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6850375

BMW 1 3 Series E81 E87 LCI E88 E90 M3 E92 Speed Cluster Sensor 6780334

€35.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0907601E

Audi S3 8Y 2.0 TFSI DNFF Petrol Engine Sound Noise Actuator 4H0907601E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9075450100

Fuse Box Mercedes Sprinter W907 W910 Relay Box Fuse Box Module A9075450100

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6972678

BMW 1 3 Series E81 E87 E90 Hands-free Electronics Charging Module MULF 6972678

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9264573

BMW 3 Series E91 LCI ECU Body Control Module Junction Box H2 9264573

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0959793T

Audi Q7 4L Door Module Front Driver's Side Control Unit ECU 4F0959793T

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9254025

BMW 5 7 X3 X5 X6 Series F10 F11 E70 E71 F01 F02 F25 Rain Light Solar Sensor

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

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