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

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Seat Module BMW E65 E66 Front Seat Control Unit ECU 9134631

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

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Relay Mercedes W166 Voltage Dip Protection Start/Stop Relay Module A0009820123

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Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406509

€23.95

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

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€37.95

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€47.95

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Mercedes W205 Interior Trunk Fuse Box Automotive Pink Relay A0009821923 Red

€23.95

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

€66.95

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BMW F20 F21 F30 F31 N47N 118d 318d 143HP Engine Control ECU DDE 8518569 Manual

€80.95

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Ford Transit Mk8 Rear Bumper Parking Sensor Wiring Loom Harness BK3T-15K868-EB

€23.95

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Mercedes ML W164 Rear Door Ribbon Electrical Cable Wiring Right O/S

€23.95

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Audi A1 8X 1.4 TSI CAXA Alternator 03C903023S

€32.95

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BMW F20 F21 F30 F31 LCI Cable Alternator-Starter-Base B+ 8638585

€23.95

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Seat Leon Skoda Octavia 5E Airbag Control Unit Module ECU 3Q0959655AS

€42.95

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Mercedes ML W166 Rear Lamp Tailgate Light Wire Connector Right O/S A1669068801

€23.95

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Part no. 6977427

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€23.95

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Door Module Mercedes C118 W177 W247 Front Right O/S Control Unit A1779004106

€23.95

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BMW X1 X3 Z4 E83 LCI E84 E89 E90 E91 E92 Speed Sensor Cluster 6782372

€23.95

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Audi A8 D4 Headlight Head Light Lamp Range Control Unit Module ECU 4H4907357B

€75.95

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Mini Cooper One R50 R53 Heater Temperature Control Actuator 0132801166

€23.95

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Mercedes Sprinter W906 Connector AUX USB Adapter Port Socket A4478200087

€23.95

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Battery Cable Mercedes W177 W247 Negative Lead Terminal Harness A0009051910

€37.95

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Mercedes ML W166 Fuse Box Front Relay Control Unit Module A1665402450

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Mercedes W910 Gearbox Control Module A2139008430

€23.95

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€23.95

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Mercedes W205 Module SRS Control Module Unit A2059008618

€23.95

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Part no. 9171948

BMW X5 X6 E70 E71 Air Module Control ECU Unit Module 9171948 0285010250

€23.95

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Ford Galaxy Mk2 Fuse Box Body Control Module BCM Unit 2.0 TDCi 7G9T-14A073-DF

€51.95

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Audi A3 8V 1.4 TFSI Petrol Starter Motor Engine Actuator Unit 0AM911023N

€23.95

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Seat Belt Module BMW E92 F32 E61 Control Unit LCPA ECU 9273584

€23.95

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BMW F10 F20 F30 F31 Mini F55 F56 Front Heated Seat Control Module ECU 7490465

€23.95

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Audi A4 B9 Gateway Control Module Unit ECU 4M1907468D

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Mercedes W204 Fuse Box Terminal Connection Unit A2115452301

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Part no. 8XA035192C

Audi A1 8X Mulitmedia MMI Player Audio Stereo Radio Head Unit 8XA035192C

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Mercedes W204 SAM Module Control Unit Rear A2049060305

€80.95

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Air Module Unit BMW F10 F11 F30 F31 F25 F12 F13 X3 F25 ECU Control 9319493

€23.95

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BMW F20 F21 F30 F31 Rear Electronic Module Fuse Box Control Unit V1 REM 9293305

€23.95

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Mercedes ML W166 Rear Tail Light Lamp Wiring Harness Cable Left N/S A1669063301

€23.95

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BMW E63 E64 Convertible Coupe DWA Alarm System Module Control Unit 6949226

€23.95

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Mercedes Sprinter W907 Battery Wire Negative Lead Cable A9079051202

€23.95

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BMW 1 3 Series F20 F30 F31 LCI Line Cable Power Distribution Module 8624382

€23.95

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Land Rover Discovery 4 L319 Rear Parking Sensor Wiring Loom Harness EH2215B484CB

€56.95

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BMW F20 F21 F30 LCI Headlight Control Unit Module FLE2 7492026

€51.95

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BMW E70 F01 F02 F10 F11 Rain / Light / Solar Fogging Sensor Control Unit 9234087

€23.95

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Part no. A1644407110

Mercedes W164 Wiring Loom Cable Harness Door Rear Left Right A1644407110

€23.95

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Part no. 6915327-1

BMW E46 E60 E81 E87 E90 E91 F10 F20 F30 2x Relay Make Contact Sky Blue 6915327

€23.95

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BMW F20 F21 F30 F31 F32 Rear Body Control Unit Module REM 9329703

€23.95

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Part no. 7571142-1

Mini Cooper R55 R56 R57 Battery Cable Wiring Lead Power Positive 7571142

€23.95

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Mercedes W203 CL203 W204 M272 Petrol Ignition Coil Cable Connector A0001502780

€66.95

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Mercedes W205 W222 Fuel Pump Module Control Unit A0009003206

€23.95

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Part no. 06E971627N

Audi A4 B8 A6 C7 A7 C7 4G Fuel Injector Wiring Cable 3.0 TFSI 06E971627N

€23.95

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Land Rover Discovery 3 Sterter Motor 12V 2.7 V6 LION 276DT Diesel 5H22-11002-AB

€32.95

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Audi A4 B9 Front Door Control Module Unit Driver's Side 8W0959593E

€28.95

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Module Mercedes W205 Relay Body Control Module Unit SAM BCM A2059006822

€28.95

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BMW F10 F20 F23 F30 Telematics Module Bluetooth Communications Control 6809316

€85.95

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Part no. A2075403434

PDC Wiring Mercedes W204 W207 Parktronic Parking Sensor Cable Rear A2075403434

€23.95

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Part no. 8E0857925G

Audi A3 8P TT 8J A4 B7 Ipod Interface Multimedia Storage Compartment 8E0857925G

€23.95

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Electrical Wiring Cable Mercedes W164 W251 Radio Media Interface A1648202715

€23.95

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BMW X5 F15 X6 F16 Power Steering Column Control Unit Module 6865245

€23.95

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Part no. 1K0959654

Audi A3 8P Steering Wheel Position Angle Sensor Control Unit Module 1K0959654

€23.95

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€23.95

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Audi A3 S3 8V Door Control Module Front Passenger Side Left N/S 5Q0959392B

€23.95

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Porsche Cayenne 9PA 955 Front Bumper PDC Park Sensor Wiring Harness 7L5971095C

€37.95

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Mercedes W176 W246 Display Screen Radio Navigation Sat Nav Unit A2469007018

€61.95

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BMW E46 X5 E53 E60 E65 X3 E83 Z4 E85 Z3 Cable Alternator Starter 1439743

€23.95

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Part no. A0009004434-2

Parking Control Module Mercedes C118 W177 W247 PDC Bluetooth Unit A0009004434

€142.95

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VW Volskwagen Polo 6R Multimedia Electronic ECU Control Unit Module 5N0035342G

€23.95

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VW Volkswagen Polo 6R Negative Battery Terminal Cable Wiring 6R0971537F

€23.95

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Ford Mondeo Mk4 Air Module Control Unit ECU 7S7T-14B056-AD

€23.95

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Range Rover L405 Radio Antenna Reciver Module Unit AH42-15K602-BC

€23.95

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Door Cable BMW F36 Rear Left Right N/O/S Wiring Harness 9325917

€23.95

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Part no. 6R0971235C

VW Volkswagen Polo 6R Negative Battery Terminal Cable Wiring 6C0971235A

€23.95

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Audi A5 8T Central Gateway Module ECU Control Unit Lear 8T0907468D

€23.95

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BMW F20 F21 F22 Rear Bumper PDC Ultrasonic Sensor Valencia Orange Metallic B44

€23.95

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Air Module BMW F01 F02 LCI F07 GT F10 F11 F13 ECU ICM Control Unit 6882963

€32.95

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Mercedes W211 CLS C219 Air Module SRS Control Unit ECU A2118702626

€23.95

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€23.95

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Land Rover Range Rover Sport L320 Air Suspension Valve Block Module RVH000055

€23.95

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BMW F90 M5 G11 G30 Fuse Box Power Distribution Unit Front Right O/S 9350313

€32.95

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Volkswagen VW Polo 6R Negative Battery Terminal Cable Wiring 6R0971226A

€32.95

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€23.95

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BMW E81 Body Control Module Control Unit L2 PL2RR JBBFE III ECU 9226326

€23.95

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€23.95

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€37.95

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€47.95

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Audi A8L 4H Front Door Control Module Left N/S Unit ECU 4H0959792G

€23.95

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Ford Transit Mk7 Starter Motor Wiring Cable 2.2 TDCi 6C1T-14A120-AD

€23.95

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Audi Q7 4L Power Distribution Box Control Unit Plus Housing Cover 7L0937401B

€23.95

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BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP ECU Kit DDE 8582279 Keys FEM

€222.95

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Mercedes A209 Engine Control Unit Module ECU 231HP Petrol Automatic A2721535591

€284.95

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€23.95

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€23.95

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