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.

More information

Find it faster

Match to your vehicle

Make

Alpine CHM-S630 CD Changer Multichanger 6-disc Magazine Cartridge

Product currently unavailable

Part no. 02E911024CX

Volkswagen Sharan 7N Engine Starter Motor Lucas 02E911024CX

Product currently unavailable

Part no. 9286796

BMW E70 Body Control Module Unit Junction Box PL4 JBBFEIII R ECU 9286796

Product currently unavailable

Part no. 8K0906264A-1

Audi A4 B8 8K A5 8T 1.8 TFSI 170HP CJEB Engine ECU Kit 8K0906264A Manual

Product currently unavailable

Part no. 7557395-13

Mini Cooper R50 R52 W10 1.6 116HP Petrol Engine Control Unit ECU 7557395 Manual

Product currently unavailable

Part no. 6927929

Control Unit BMW E60 E61 E63 E64 CAS2 ECU Module 6927929

Product currently unavailable

Navigation System BMW E90 E91 E92 Professional CCC Sat Nav Controller 9150961

-40%

Part no. 9150961

Navigation System BMW E90 E91 E92 Professional CCC Sat Nav Controller 9150961

Product currently unavailable

Part no. 9267515

Gateway Module BMW F10 F11 Central Module Control Unit Lear ZGW-02 ECU 9267515

Product currently unavailable

Part no. 7823291-2

Alternator Mini Cooper R55 R56 R57 LCI R60 Diesel N47N Generator 158A 7576956

Product currently unavailable

Part no. 8638198

BMW F20 F30 116i 316i N13 136HP Engine Control Unit ECU DME 8625241 Manual

Product currently unavailable

Part no. 9141048

BMW E60 E87 E90 E91 Hands-Free Electronics Charging MULF2 9141048

Product currently unavailable

Part no. 03F971612

VW Volkswagen Polo 1.2 TSI CBZB Engine Wiring Harness Cable Loom 03F971612

Product currently unavailable

Part no. A6519009702-6

Mercedes W176 W246 A200d OM651.930 136HP Engine Unit ECU A6519009702 Manual

Product currently unavailable

Part no. A1248205926

Mercedes W124 S124 Central Lock Control Unit Module A1248205926

Product currently unavailable

Part no. 9147190

BMW E60 E61 LCI E90 E91 E92 CAS3 Control Unit Key Reading Module 9147190

Product currently unavailable

Part no. 8200546983

Renault Trafic F83 F9Q 760 Engine Control Module ECU 8200546983 Manual

Product currently unavailable

Part no. 6820701

BMW X6 F16 Multimedia TV Tuner Receiver Control Module Unit ECU 6820701

Product currently unavailable

Part no. 8742493

BMW F30 LCI 330e Hybrid High Voltage Battery Electronics Unit 8661800

Product currently unavailable

Part no. 443937105

VW Volkswagen Audi Skoda Seat Little Relay Fuse Amp 20A 12V Module 443937105

Product currently unavailable

Part no. 9229872-2

BMW E92 LCI Body Control Module ECU Junction Box L1 PL2RR JBBFE IIIR 9229872

Product currently unavailable

Part no. ET7T-18B955-BC

Ford Fiesta Mk7 Dashboard Display Multifunction Screen Monitor ET7T-18B955-BC

Product currently unavailable

Part no. A6519005301-4

Mercedes W204 C220CDI 651.911 170HP Engine ECU Kit Key Lock A6519005301

Product currently unavailable

Part no. 9335351

BMW F20 Radio Professional CD Player Control Module 9335351

Product currently unavailable

Part no. 3AF945095C-2

Volkswagen Passat B7 Saloon Rear Tail Light Wiring Outer Left N/S 3AF945095C

Product currently unavailable

Part no. 9175649

BMW E81 Footwell Light Module LOW PL2 FRM II 61359175649 9175649

Product currently unavailable

Part no. 4M0907428D

Audi A4 B9 A5 F5 Camera Control Unit Top View Module 4M0907428D

Product currently unavailable

Part no. 6943822

BMW Mini Cooper R55 R56 R60 CAS 3 ECU Control Unit Key Reading Module 6943822

Product currently unavailable

Part no. A2049069701-1

Mercedes W204 Radio Player Audio 20 Navi CD Player Head Unit A2049069701

Product currently unavailable

Part no. 9151341

Battery Cable BMW F12 F13 Underfloor Positive Plus Lead Wiring Harness 9151341

Product currently unavailable

Part no. 8X0959792D

Audi A1 8X Front Passenger Side Door Module Unit Control ECU 8X0959792D

Product currently unavailable

Part no. 8370747

BMW X3 Z4 E83 E85 Temperature Sensor Thermo Switch Heatable Spray Nozzle 8370747

Product currently unavailable

Part no. 7806779-1

MINI Cooper One D R55 R56 Alternator Generator Diesel 150A 7794970

Product currently unavailable

Part no. 8K0971095G

Audi RS4 B8 Front Bumper PDC Wiring Park Assist Sensor Harness 8K0971095G

Product currently unavailable

Part no. A2139007107

Mercedes W213 Seat Control Module Unit ECU A2139007107

Product currently unavailable

Part no. A0245458432

Mercedes W210 Petrol M112 Automatic Transmission Control Module A0245458432

Product currently unavailable

Part no. 9148016

BMW E90 E91 E92 Professional CCC DVD Navigation System Controller 9148016

Product currently unavailable

Part no. 1K8919472

VW Volkswagen Scirocco Mk3 PDC Parking Sensor Control Module ECU 1K8919472

Product currently unavailable

Part no. 5WA907361A

Volkswagen Golf Mk8 Audi S3 RS3 8Y Relay Electrical Fuse Box 5WA907361A

Product currently unavailable

Part no. 4F0820521

Audi A6 4F S6 R8 RS6 Heater Blower Motor Resistor BOSCH 4F0820521

Product currently unavailable

Part no. 959104H600

Hyundai H-1 Safety Module Air Bag SRS Control Unit ECU Module 95910-4H600

Product currently unavailable

Part no. 09D927750HT

Audi Q7 4L Automatic Transmission Gearbox Control Unit Module 09D927750HT

Product currently unavailable

Audi A6 C8 Body Control Comfort Unit Module BCM Convenience Unit ECU 4N0907064DD

-40%

Part no. 4N0907064DD

Audi A6 C8 Body Control Comfort Unit Module BCM Convenience Unit ECU 4N0907064DD

Product currently unavailable

Part no. L1TT19A067AC

Ford Puma St Cf7 Subwoofer Speaker Loudspeaker Loud Speaker L1TT-19A067-AC

Product currently unavailable

Part no. 9286465

BMW F20 X3 F25 Head Unit Navigation GPS Sat Nav Infotainment DAB High 9286465

Product currently unavailable

Part no. 2118139

Land Rover Discovery 4 L319 Front Seat Controle Motor Left N/S 2118139

Product currently unavailable

Part no. 9159807

BMW 1 Series E87 LCI ECU Light Module Footwell NSW PL2 FRM II Lear 9159807

Product currently unavailable

Part no. 7P0907801G

VW Volkswagen Touareg 7P Electric Handbrake Control Module Unit 7P0907801G

Product currently unavailable

Part no. 7842024

BMW 3 Series E90 E92 E93 M3 LCI Control Unit For Fuel Pump ECU 7842024

Product currently unavailable

Part no. 7809944-6

BMW X5 E70 3.0d M57N2 235HP Engine ECU KIT DDE 7809944 CAS3 + Key Automatic

Product currently unavailable

Part no. 7545877

Battery Cable BMW E60 E61 E63 E64 N62N Alternator Starter Base B+ Lead 7545877

Product currently unavailable

Part no. 9343739

Audio Amplifier BMW F20 F21 F22 F23 Top HiFi Harman Kardon Control Unit 9343739

Product currently unavailable

Part no. EH22-12C520-PB

Land Rover Discovery 4 L319 3.0 SDV6 256HP Engine Module ECU EH22-12C520-PB

Product currently unavailable

Part no. 9874338

Navigation Headunit BMW F20 F21 F30 F31 Mini F56 Head Unit Basic Media 9139895

Product currently unavailable

Part no. 9393952

Rear Side View Camera Module BMW F30 F31 F10 F11 F01 F02 Control Unit 9393952

Product currently unavailable

Part no. A2208201317

Mercedes-Benz S-Class W220 Tailgate Boot ECU Control Unit Module A2208201317

Product currently unavailable

Part no. 9210510-1

BMW E81 E82 E87 LCI E90 Radio Business CD Player Unit 9210510

Product currently unavailable

Part no. 5A81BC5

BMW F74 Rear Door Wiring Loom Harness Cable Left Right N/O/S 5A81BC5

Product currently unavailable

Part no. 5A57FC8

BMW F20 F21 F22 F30 X3 F25 M Sport Radio Remote Key Fob Control 868 Mhz 5A57FC8

Product currently unavailable

Part no. 8506666-3

Mini Cooper D R56 LCI 112HP Diesel N47N Engine ECU Kit DDE 8506666 CAS3 Key

Product currently unavailable

Part no. 6948335

BMW 1 X1 Series E81 E84 E87 RR1 Battery Lead Cable Negative IBS 6948335

Product currently unavailable

Part no. 5F0945208F-2

Seat Leon FR 5F Rear LED Tail Light Wiring Cable Harness Right O/S 5F0945208F

Product currently unavailable

Part no. 06A906033GQ-1

Audi A3 8P 1.6 MPI BSE 102HP Engine Control Unit ECU 06A906033GQ Manual

Product currently unavailable

Part no. 3Q0907530BB-1

Audi Q2 GA Central Gateway Control Unit Module Relay ECU 3Q0907530BB

Product currently unavailable

Part no. 7526780

BMW Mini R50 One 1.6i Petrol Engine Control Unit DME Manual 7520019 7526780

Product currently unavailable

Part no. A1729005507-1

Mercedes R172 Head Unit Radio CD Player Multimedia Audio A1729005507

Product currently unavailable

Part no. 9217853-1

BMW E60 E81 E87 E90 Mini R56 CAS 3 ECU Control Unit Key Reading Module 9217853

Product currently unavailable

Part no. 8482313

BMW G30 Engine Wiring Loom Harness Ignition Module 8482313

Product currently unavailable

Part no. 3456852

Fuse Box MINI R56 LCI Cooper One PL3 SPEG H5 Distribution Control Unit 3456852

Product currently unavailable

Part no. 7P0907553K

Porsche Cayenne Turbo 92a Air Adaptive Suspension Control Unit ECU 7P0907553K

Product currently unavailable

Part no. 7806976-6

BMW E70 E71 3.0d M57N2 235HP Engine Control ECU KIT DDE 7806976 CAS3 Key

Product currently unavailable

Part no. A6519002803-4

Mercedes W447 114 CDI OM651.950 136HP Engine Unit ECU Kit A6519002803 Automatic

Product currently unavailable

Part no. 6949694

CD Changer BMW E60 E61 E63 E64 6-disc Without Magazine 6949694

Product currently unavailable

Part no. A2469067200

Fuse Box Mercedes CLA C117 X156 W176 W246 Relay Unit A2469067200

Product currently unavailable

Part no. LK62-5H310-AC-1

Range Rover Sport L494 Lambda Oxygen Sensor Control Unit 3.0 LK62-5H310-AC

Product currently unavailable

Part no. A2118203297

Mercedes W211 W219 Radio CD Player COMAND Sat Navigation Head Unit A2118203297

Product currently unavailable

Part no. 9274428-1

Parking Sensor Mini Cooper F54 F55 F56 F57 F60 PDC Ultrasonic Black 9274428 SET

Product currently unavailable

Part no. 7L9971104

Volkswagen Touareg 7L Rear Bumper PDC Parking Sensor Wiring Loom 7L9971104

Product currently unavailable

Part no. 02M911024B

Volkswagen VW Golf Mk7 VII Passat B8 Starter Motor Diesel Engine 02M911024B

Product currently unavailable

Part no. A2749000800-3

Mercedes W205 C200 274.920 184HP Engine Control Unit ECU A2749000800

Product currently unavailable

Part no. 5K0959434B

Audi A1 8X Q3 8U Keyless Access Module Control Unit 5K0959434B

Product currently unavailable

Part no. 4M0907355H

Audi A4 B9 A5 F5 AdBlue SCR Control Unit Module 2.0 TDI 4M0907355H

Product currently unavailable

Part no. 03L906022FD-1

Audi A3 8P 2.0 TDI 170HP CBBB Engine ECU Unit Kit 03L906022FD Key + Ignition

Product currently unavailable

Part no. 8693213

BMW F30 LCI 330i B48X Engine Control 184HP 2.0 Petrol Hybrid Manual 8693213

Product currently unavailable

Part no. 7533651-8

BMW E60 530i M54 231HP Engine ECU Kit Unit DME 7533651 + CAS2 + Key Automatic

Product currently unavailable

Part no. 7796819-1

Engine Wiring BMW X5 E53 3.0d M57N Loom Cable Harness Injector Module 7796819

Product currently unavailable

Part no. 6939811

BMW E85 Roadster Cabrio Safety Information Air Module 6939811

Product currently unavailable

Part no. 03G971033L

Audi A3 8P Injector Nozzle Adapter Wiring Loom Harness 2.0 TDI Diesel 03G971033L

Product currently unavailable

Part no. 5M0941295B

Volkswagen Scirocco Mk3 Headlight Range Control Motor 5M0941295B

Product currently unavailable

Part no. 7580279

BMW E87 LCI E90 320i N43 170HP ECU Engine Control Unit DME 7580279 Manual

Product currently unavailable

Part no. A1669055901

Mercedes C292 Negative Cable Battery Terminal Sensor A1669055901

Product currently unavailable

Part no. 9170453

BMW X5 E70 Footwell ECU Light Control Module Xenon FRM II Lear 9170453

Product currently unavailable

Part no. 8582802

Control Unit BMW F10 F30 F31 330d 530d Diesel N57N Engine ECU DDE 8582802

Product currently unavailable

Part no. 7577968-6

BMW E90 Engine Control Unit ECU 330i N52 N52B30A 258HP 3.0 Petrol 7577968 Manual

Product currently unavailable

Part no. 6860962

BMW X3 F25 ECU ICM Air Module Control Unit 6860962 0265020494

Product currently unavailable

Part no. 8U0035192E-1

Audi Q3 8U Multimedia MMI Radio CD Sat Nav Head Unit Module ECU 8U0035192E

Product currently unavailable

Part no. 9847268

BMW G20 G21 G30 G31 Hybrid Electronic Memory Management Control Module 9847268

Product currently unavailable

Part no. 9345330

BMW X3 F25 Body Control Module ECU Junction Box JBBFE III V8 9345330

Product currently unavailable

Part no. 8U0959107

Audi Q3 8U Boot Tailgate Control module Unit 8U0959107

Product currently unavailable

Part no. 1811631-1

Ford Mondeo Mk4 Xenon Headlight Wiring Harness Cable Right O/S BS71-13006-BF

Product currently unavailable

...

Showing 14752-14850 of 21293 products