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 5 6 Series E60 E61 E63 Driver Side Door Airbag Control Unit Module 6963013

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9151148

BMW X5 E70 X6 E71 Mini Cooper R55 R56 R57 6 Disc CD Changer 9151148

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8584555

Mini R55 R56 LCI R60 R61 D N47N Engine Injector Module Wiring Harness Cable

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2128203542

Tailgate Module Mercedes W204 W212 Boot Lid Locking ECU Control Unit A2128203542

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 1439743

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

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7239175-1

BMW F30 F80 M3 Battery Cover Trunk Trim Panel Right Boot 7239175

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2219004704

Mercedes-Benz S W221 Comand 6-Changer CD Radio Head Unit DVD Navi A2219004704

£712.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. A2056200018

Battery Box Bracket Mercedes W205 W213 W238 Trim Holder Right O/S A2056200018

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A6395450191

Mercedes Vito W639 Positive Battery Terminal Cover Cap Trim Red A6395450191

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9136725

BMW Mini Cooper One R55 R56 Multifuse B Battery Power Distributor 9136725

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9298962

BMW F20 F21 F22 F30 F31 F32 F33 F80 M3 Body Control Unit Module REM V5 9298962

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 3417417

BMW X3 Series E83 Boardmonitor Central Information Display Screen 6,5"

£189.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 9176685

Navigation System BMW X3 E83 Z4 E85 Mini R50 R52 DVD GPS Computer Unit

£123.95

Free delivery: Aug 27

If paid before 14:00

Part no. 3412336

BMW X3 E83 Battery Cable Negative Wiring 3412336

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7823422

ECU Engine Control BMW E81 E87 E90 LCI 118d 318d N47 Diesel DDE 7823422 Manual

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0009068802

Alternator Generator Mercedes Sprinter W906 Engine Diesel 180A 14V A0009068802

£123.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9171948

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

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9138969

BMW E60 LCI E61 LCI Electronic Driver Circuit Centre Console 9138969

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6957759

BMW E60 E61 E63 Driver Side Door Air Module Control Unit Module 6957759

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4H0951253A-1

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

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7520912

BMW E60 E61 E63 E64 LCI Cover Electronic Box 7520912

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. RHD-1K8971121S

Volkswagen VW Scirocco Mk3 Passenger Door Wiring Harness Loom Cable 1K8971121S

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8P0919283D

Audi A3 8P PDC Parking Distance Control Sensor Module Unit ECU 8P0919283D

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8379094

BMW X5 Series E53 Rear Right Door Stereo Audio Loudspeaker O/S 8379094

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6945145

BMW E60 E61 E63 Air Control Module Passenger Side Door 6945145

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6915327-1

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

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7H0907299

Volkswagen Transporter T5 Engine Bay Cover For Main Fuse Box 7H0907300

£51.95

Free delivery: Aug 27

If paid before 14:00

Part no. G3GT17D547

Ford Transit Custom Mk1 Front Windscreen Rain Sensor Module G3GT-17D547

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A9079000304

Mercedes Sprinter W907 W910 Air Module Sensor Unit ECU A9079000304

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0018209126

Mercedes CLC CLK Class CL203 W203 C209 Crash Sensor A0018209126

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8X0035193F

Audi A1 8X Sat Navi Stereo Radio Audio MMI Head Unit CD Player Unit 8X0035193F

£232.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9229873

BMW 1 Series E81 Body Control Module ECU L2 PL2RR JBBFE III Junction Box 9229873

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9171925

BMW E88 Convertible Air Module Sensor ECU Control Unit Module 9171925

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4E0035729

Audi A6 C6 Bluetooth Interface MMI Multimedia Control Module ECU Unit 4E0035729

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 3Q0905861C

Audi A4 B9 A5 F5 Steering Column Lock Mechanism Control Unit 3Q0905861C

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9210857

BMW F01 F07 GT F10 F11 F13 Power Distribution Fuse Box Rear 9210857

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A6461509372-1

Mercedes W204 C220CDI OM646.811 170HP Engine ECU Kit A6461509372 2Keys Lock

£189.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9226325

BMW 1 E82 ECU Body Control Module L1 PL2RR JBBFE IIIR Junction Box 9226325

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8512498-5

BMW E84 E90 LCI 20dX 320xd N47 177HP ECU Kit DDE 8512498 CAS3 + Key Manual

£123.95

Free delivery: Aug 27

If paid before 14:00

Part no. A9067601304

Mercedes-Benz Sprinter W906 Front Right Door O/S Handle Bowden Pull Cable

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. GU5T-14B192-GA

Ford Transit Mk8 Relay High Power 4-Pin Black FoMoCo GU5T-14B192-GA 4RA933714

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7521582

BMW E46 E83 E85 Engine Electronics Unit Box Cover Trim 7521582

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6987692

BMW E87 E90 Navigation System Professional CCC Navi Controller 6987692

£474.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. A2749062100

Starter Motor Mercedes W213 C238 C253 Engine A2749062100

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9176824

BMW X5 E70 Footwell Light Control Module Unit LEAR PL4 FRM II 9176824

£94.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8K0907472

Audi A4 B8 Headlight Headlamp LED Module Control Unit 8K0907472

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9244189

BMW F20 F21 F30 F31 Telematics Module Bluetooth Combox Telematik ECU 9244189

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6818814

Airbag Module Mini F55 F56 F60 BMW X1 F48 F45 ECU Control Unit Air Bag 6818814

£66.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9326204

BMW X3 F25 B+ Distribution Box Battery Power Front Control Unit Point 9227458

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 1K0971228L

VW Golf MK5 6 Audi A3 8P Positive Battery Terminal Cable 1K0971228L

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2125400382

Mercedes W212 Cover Fuse Box Trim Panel Lid A2125400382

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2049009410

Mercedes W204 CD Player Radio Stereo Navigation Sat Nav Head Unit A2049009410

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6932452

BMW 5 6 Series E60 E61 E63 E64 Power Distribution Electrical Fuse Box 6932452

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9318579

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9318579

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9244429

BMW X6 Series E71 Rear Bumper PDC Cables Wiring Loom Set 9244429

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6836768

BMW F20 F31 LCI F32 Telematics Control Unit Module ATM ECE 4G WLAN 2622602

£123.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7P0927601

Oil Pump Control Audi Q7 4L Volkswagen Touareg 7P Module Unit ECU 7P0927601

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0325453832

Module Mercedes W639 Automatic Transmission Control Module Unit A0325453832

£189.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 6968036

BMW 1 Series E87 ECU Body Control Module Unit H2 PL2 JBBFE 6968036

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9231175

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

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7579142-2

BMW E81 E87 LCI E90 120i 320i Petrol N43 170HP Engine ECU DME 7579142 Manual

£66.95

Free delivery: Aug 27

If paid before 14:00

Part no. A4475400082

Mercedes Vito W447 Fuse Box Cover Trim Panel Lid Housing A4475400082

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7553735-10

MINI S R52 R53 W11 Engine Control Unit Module ECU DME 7553735 Manual

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0009006713

PDC Module Mercedes W176 W246 Parking Assist Distance Control Unit A0009006713

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2139002210

Mercedes-Benz W176 W205 W207 W213 Bluetooth Control Unit Module ECU A2139002210

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. RHD-7H2857151C

Volkswagen Transporter T5 Interior Fusebox Panel Cover 7H2857151C

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6957342

BMW 5 6 Series E60 E63 On-board Navigation Display Monitor Screen 6,5" 6957342

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7N0951253

VW Volkswagen Scirocco Mk3 Power Starter Motor Relay 12V 50A Plug 7N0951253

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 167859

BMW X5 Series E53 Widescreen Motorway and Trunk Road Unit Module 167859

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9283429

BMW E90 E91 E92 E93 LCI Radio CD Player Multimedia Head Unit 9283429

£427.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 7595179-16

BMW E81 E87 LCI E90 E91 Petrol N43 Engine Control Unit ECU DME 7595179 Automatic

£94.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 8586536-3

BMW F30 F32 LCI F36 335dX 435dX N57Z 313HP Control ECU DDE 8586536 Automatic

£142.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8K0907063DH

Audi A5 8T Onboard Comfort Supply Control Module Unit ECU 8K0907063DH

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5Q0959593K

Audi A3 8V Door Module Control Unit Front Driver Side 5Q0959593K

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1645403472

Mercedes W164 Fuse Box Relay Module Unit A1645403472

£75.95

Free delivery: Aug 27

If paid before 14:00

Part no. rhd-9176681

BMW Z4 E89 Cabrio Key Reader Ignition Lock Remote Control 9176681

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0025450801

Fuse Holder Mercedes W169 W245 W906 Electrical Fuse Box Bracket A0025450801

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6860385

Control Unit BMW F01 F02 F07 Air Suspension Control Module ECU 6860385

£137.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2075400740

Fuse Box Mercedes W204 Battery Terminal Control Unit Module A2075400740

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5Q0803219C

Battery Clamp VW Golf 8 CD1 Audi A3 8Y Battery Base Bracket Holder 5Q0803219C

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8631833

Mini R55 R56 R57 LCI R60 Automatic Gearbox Basic Control Unit EGS 7356237

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1669051702

Mercedes-Benz A C M W166 W176 W205 Aerial Antenna Amplifier Unit A1669051702

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0009003210

PDC Module Mercedes W176 W246 Parking Assist Distance Control Unit A0009003210

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 06L971627A

Audi S1 8X S3 8V VW Golf R Mk7 2.0 TFSI Fuel Injectors Wiring Harness 06L971627A

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8506657

BMW X3 F25 Starter Motor Diesel Engine 12V Bosch 8506657

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8614302-2

BMW F20 F21 F30 116i 316i N13 Engine Control Unit ECU Module DME 8614302 Manual

£275.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2479002707

Communication Module Mercedes W177 W247 Hermes LTE Control Unit A2479002707

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7168154

Mini Clubman R55 LCI Wiper Motor Actuator Window Right Rear O/S 7168154

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6929345

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

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5Q0907530Q

Gateway Control Module Audi A3 8V Volkswagen MK7 ECU Unit 5Q0907530Q

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6907395

BMW X5 Series E53 Electrical Power Distribution Fuse Box 6907395

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8K0959754H

Audi A5 8T Remote Button Smart Key Fob Unit 8K0959754H

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6862808

BMW F10 F11 F12 X3 F25 Electric Parking Brake Control Unit EMF Module 6862808

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1698208326

Mercedes-Benz W169 W245 Door Module Front Left N/S Control Unit A1698208326

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2469009413-1

Mercedes W176 W246 Control Unit Body Control Module ECU A2469009413

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7808630

Mini Cooper One D W16 R55 R56 Engine Wiring Loom Harness 7808630 7795052

£56.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6844126

On-Board Screen BMW F20 F30 LCI Information Display Touch Monitor 8,8" 6844126

£474.95

Free delivery: Aug 27

If paid before 14:00

Part no. A4479001000

Mercedes Vito W447 Air Module Sensor Control Unit ECU A4479001000

£142.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2139002422

Mercedes W213 Front Door Module Control Module Unit Right O/S A2139002422

£70.95

Free delivery: Aug 27

If paid before 14:00

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