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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MINI Cooper R55 LCI Footwell Light Module Unit High EKS PL3 FRM3R 3456952

€175.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0959792D

AUDI S5 8T Door Control Module ECU Front Left N/S 8K0959792D

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7625998

BMW F20 F21 F22 F30 F31 F32 F33 Line Cable Power Distribution Module 7625998

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0937086M

VW Volkswagen Scirocco Mk3 Body Control Module BCM 2.0 TDI Diesel 1K0937086M

€118.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9874189

BMW 1 3 Series F20 F30 MINI F56 Control Unit Air Conditioning Module 9284440

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 899543000

Porsche Boxster 986 A/C Air Conditioning Relay Control 12V 10A 899543000

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9340522

BMW 5 F10 LCI Central Gateway Module ECU Control Unit LEAR ZGW-02 4SK 9340522

€66.95

Free delivery: Sep 14 – 15

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Part no. A2049006301-1

Mercedes W204 Rear SAM Module Fuse Box Control Unit A2049006301

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7850599

BMW F80 M3 F82 M4 Wheel Accelerator Sensor Cable Rear Axle Suspension 7850599

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2229009534

Mercedes W222 Front Headlight Headlamp Control Unit Module A2229009534

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6975044

BMW Mini Cooper One R50 Cable Wiring Loom Door Front Left N/S 6962777

€23.95

Free delivery: Sep 14 – 15

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Part no. 4E0907280B

Audi A8 4E S8 D3 Power Supply Control Module Unit ECU 4E0907280B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9150109-2

BMW E81 E87 E90 E91 E92 Radio CD Player Professional 9150109

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1432237

BMW 3 5 7 Z3 Z4 X5 Series E38 E39 E46 E53 Climate Comprresor Supporting Bracket

€23.95

Free delivery: Sep 14 – 15

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Part no. A2078210411

Mercedes W204 W207 Centre Console Connector AUX USB Port Socket Trim A2078210411

€23.95

Free delivery: Sep 14 – 15

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Part no. 6929345

BMW 1 3 Series E82 E90 E92 Roof Antenna Aerial Shark Fin GPS Radio Tel 6929345

€23.95

Free delivery: Sep 14 – 15

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Part no. 7534705

Mini R50 R52 Ground Battery Cable Alternator Starter 7534705

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2198200726

Door Module Mercedes C219 Front Right Door O/S Control Unit Module A2198200726

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1779002510

Mercedes W177 W247 Safety Module Air Module SRS Control Unit ECU A1779002510

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9360501

Mini F54 F55 F56 F57 F60 Rear Electric Power Distribution Fuse Box 9360501

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8576341-7

BMW F20 F21 F30 F31 116d 316d 116HP N47N ECU Kit DDE 8576341 + Key + FEM

€161.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3452683

BMW Mini Cooper One R56 Footwell Light Module High EKS ECU PL3 FRM II 3452683

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9218381-1

BMW F10 F20 F30 Steering Wheel Module Electronics Control Unit 9209427

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L903017E

Audi A4 B8 A5 8T Q5 8R Quattro Alternator Generator 2.0 TDI 03L903017

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5H6035577T

VW Golf Mk8 Antenna Amplifier Rear Boot Lid Tailgate Right O/S 5H6035577T

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6866330

VDC Module BMW F20 F21 F30 F31 Rear Suspension Level Control Unit 6866330

€108.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8625072

Wiring Loom Mini Cooper F55 F56 Harness Injection Valve Ignition 8625072

€23.95

Free delivery: Sep 14 – 15

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Part no. 9149673

BMW 5 Series E60 E61 LCI Alarm System Unit Ultra Sonic Module 9149673

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2035454501

Mercedes W203 Fuse Box SAM Control Unit Module Relay A2035454501

€132.95

Free delivery: Sep 14 – 15

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Part no. 6885215

BMW F90 M5 F91 M8 G05 G11 G30 Steering Column Control Unit Module 6885215

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7522234

Mini R50 R52 Battery Cable Negative Wire 7522234 7519551

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1645400182

Mercedes ML W164 GL X164 Fuse Box Cover Trim Panel Cap A1645400182

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5H6035577B

VW Golf Mk8 Antenna Amplifier Rear Booster Boot Lid Tailgate Left N/S 5H6035577B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2475411000

Mercedes C118 W177 W247 Battery Box Tray Trim Housing Cover A2475411000

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2139005528

Mercedes W205 W213 Ignition Central Lock Control Unit Module ECU A2139005528

€161.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3M5T-19E663

Ford Kuga C394 Mk1 Sun Solar Light Sensor Control Unit 3M5T-19E663

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6071500133

Engine Wiring Mercedes W176 W246 Diesel OM607 Loom Harness Cable A6071500133

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2195450732

Mercedes CLS W219 Parking Sensor PDC Distance Control Unit Module A2195450732

€28.95

Free delivery: Sep 14 – 15

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Part no. 9127895

BMW E88 Convertible Antenna Aerial DAB Rear Trunk Tailgate 9127895

€37.95

Free delivery: Sep 14 – 15

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Part no. A2045450003

Mercedes W204 Fuse Box Battery Starter Cable Cap Cover Top Lid A2045450003

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9253111-1

BMW 1 2 Series F20 F21 F22 Positive Plus Pole Battery Blow Cable Part 9253111

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8604258

Mini Cooper R56 Positive Battery Cable Alternator Lead 8604258

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7574294

Mini Cooper S R56 Automatic Gearbox TCU ECU Control Unit EGS Module 7574294

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7627021

BMW 1 3 Series F20 F21 F30 Petrol N13 Harness Engine Sensors Module 1 7627021

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BJ32-14C249-AB

Range Rover Evoque L538 Seat Control Module Unit ECU BJ32-14C249-AB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2754241-2

BMW MINI Cooper R55 R56 R57 Engine Computer Mount Support Bracket Holder 2754241

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8378753

BMW 3 5 7 X5 Series E38 E39 E46 E53 E65 Reception Antenna RDC 433MHZ 8378753

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1388277080

Citroen Relay 35L III Positive Battery Wiring Loom Harness Diesel 1388277080

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1729008500-2

Mercedes W166 W204 Display Screen Information Navigation Dashboard A1729008500

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2079011900

Air Module Mercedes W207 A207 Control Unit ECU Air Module Sensor A2079011900

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9316575

BMW 1 2 Series F20 F21 F22 Battery Cable Lead Positive Underfloor 9316575

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8L0971035H

Audi A3 S3 8L Front Door Card Panel Wiring Harness Right O/S 8L0971035H

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6511501433

Mercedes W176 W246 Glow Plug Wiring Harness Loom OM651 Engine A6511501433

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8512415

Mini Cooper D R60 ALL4 N47N 112HP Diesel Engine Control Unit ECU DDE 8512415

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8586571

BMW 1 3 F20 F30 LCI B47 Engine Gearbox Module Wiring Cable Loom Harness 8586571

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7248911-1

BMW F20 F21 F22 F30 F31 Fog Light Lamp Wiring Harness Plug Left N/S 7248911

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1695400606

Mercedes-Benz A W169 Parktronic Parking Sensor Wiring Cable Rear PDC A1695400606

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. Q0008767V002

Smart Roadster 452 Air Module Control Unit SRS 0008767V002

€237.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W0959593N

Audi A4 B9 Front Door Module Control Unit ECU Driver's Side 8W0959593N

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0959593B-1

VW Golf 5G Audi S3 A3 8V Door Module Control Unit Front Driver Side 5Q0959593B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P6919603

VW Volkswagen Touareg 7P Dashboard Multimedia Display Screen Panel 7P6919603

€137.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1J6035111

VW Volkswagen Touareg 7L Golf 4 CD Changer 1J6035111

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 04L907309R

Audi A3 8V 2.0 TDI Quattro 184HP DGCA Engine ECU Unit 04L907309R Automatic

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9292948

BMW 1 2 3 4 Series F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9292948

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8R0971693B

Audi Q5 8R Rear Door Card Wiring Loom Left Right N/O/S 8R0971693

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8267406

Headrest Adjustment BMW E46 E64 Front Right O/S Seat Actuator 8267406

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9128573

BMW 1 Series E87 LCI E87N Cable Set PDC Front Wiring Loom 9128573

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9134668

Seat Control Unit BMW E90 E91 E92 Seat Module Unit Controller ECU 9134668

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8H0959655G

Audi A4 B7 Air Module Control Unit ECU Impact Sensor 8H0959655G

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9160557

BMW Z4 E60 E61 E63 E85 Air Module Control Unit Module ECU 9160557

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2519005200

Mercedes R350 V251 Head Unit Radio Player Navigation Media Bluetooth A2519005200

€170.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0959793E

Audi A4 B8 Door Module Front Drive Side Control Unit ECU 8K0959793E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6395406209

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406209

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0971349JQ

Audi A3 8P 1.2 TFSI CBZB Alternator Wiring Harness Cable Loom 1K0971349JQ

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1495806

Mini Cooper One R50 R52 R53 JCW Starter Heat Resistant Plate 1495806

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9214813

BMW X5 E70 Safety Airbag Control Unit Module ECU X6 E71 Bosch 9214813

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. JX61-12B533-AA

Ford Transit Custom Mk8 Engine Glow Plug Relay 2.0 EcoBlue Diesel JX61-12B533-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8606445

Wiring Harness BMW F20 F21 F30 LCI Motor Sensor System Module 1 8606445

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9393667

BMW F10 LCI Body Control Module ECU Unit JBBFEIII V2 PL6 9393667

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7195768

BMW 7 Series E65 E66 E67 Battery Holder Hold Down Strap Bracket 7195768

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6935597-TS1

BMW E81 E87 Front Rear Parking Sensor PDC Titansilber Silver 354 6935597

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9196937

BMW E93 Convertible Seat Control Unit Module ECU 9196937 FSV 7.14.0

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9236460

BMW F10 Footwell Light Module Control Unit ECU FRM III 9236460

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4L0941329

Audi Q7 S LINE Headlight Power Control Unit Module 4L0941329

€80.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2229005315

Bluetooth Module Mercedes W176 W205 Multimedia Control Unit ECU A2229005315

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1779005505

Door Module Mercedes W177 W247 Rear Left Right N/O/S Control Unit A1779005505

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6957330

BMW E60 E61 E63 Power Distribution Electrical Fuse Box 6957330

€23.95

Free delivery: Sep 14 – 15

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Part no. A2479008615

Mercedes GLC X253 Camera Lane Assist Control ECU Module Unit A2479008615

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7253188-1

BMW 3 Series E92 Sports Seat Left Right Thigh Support Cover Trim Leather Dakota

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9227752

BMW F20 F21 F22 F23 F30 F80 M3 F82 F36 Distributor B Multifuse 9227752

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9134631

Seat Module BMW E65 E66 Front Seat Control Unit ECU 9134631

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0035421619

Mercedes W177 Relay 052 Engine Fuse Box Relay Slot B D E 70A Tyco A0035421619

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4H0035456

Audi A7 4G Aerial Antenna Amplifier Control Unit Module 4H0035456

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6395406509

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406509

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9243896

Central Information Display BMW F10 F11 LCI Boardmonitor Screen 7" 9243896

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7843338

Engine Wiring BMW F10 M5 F13 M6 Valvetronic Servomotor Cable Loom 7843338

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 06K907425B-22

VW Golf Mk7 5G R 2.0 TSI CJXC 300HP 4motion Engine ECU Kit 06K907425B Manual

€284.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009821923

Mercedes W205 Interior Trunk Fuse Box Automotive Pink Relay A0009821923 Red

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4H0907468AF

Audi A8 D4 Central Diagnostic Getaway PKO Control Unit Module ECU 4H0907468AF

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

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