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 1 3 Series 2 E81 E87 E90 E91 E92 6-disc CD Changer Without Magazine 6967641

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6960225

BMW E65 E66 E67 Sensor Vehicle Centre Air Control Unit Module 6960225

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. rhd-9381818

BMW X5 F15 Battery Cable Underfloor Positive Plus Lead Wiring Harness 9381818

£89.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9159034

BMW 1 Series E87 LCI CCC CD Professional Navigation System Controller 9159034

£208.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9387147

BMW F30 LCI 330e B48X Positive Battery Cable Plus EME Loom 9387147

£23.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A20559

BMW F40 F44 Transmission EGS Control Module Unit ECU 5A20559

£170.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 6823070

BMW F45 Fuse Box Grouping Fuse Placement Map Card Diagram 6823070

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6925215

BMW E65 E66 E67 Control Unit Voice Input System Module 6925215

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8585727

Wiring BMW F21 F30 F34 F36 Diesel N47N Engine Gearbox Module Harness 8585727

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9853369-1

BMW X3 G01 Rear Lamp LED Tail Light Wiring Harness Cable Plug Left N/S 9853369

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6937466-3

BMW E92 E93 LCI Front Fog Light Wiring Harness Cable Right O/S 6937466

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. rhd-8784916-1

Head-Up Display BMW F90 M5 G30 Hud Project Dash Screen Control Module 8784916

£94.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9368387

BMW F07 F10 F11 X6 F16 Rear Cabin Entertainment Audio CD DVD Player 9368387

£189.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7798875

BMW X5 Series E70 LCI Ventilation Grommet Unit Box Cover 7798875

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8577862-1

BMW X5 F15 40dX N57 313HP Engine Control Module ECU DDE Kit 8577862 FEM Key

£455.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 6833345

Mini F60 Crash Pressure Sensor Pedestrian Protection Control Unit Module 6833345

£47.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A17B00

BMW G20 Body Control Module BDC BDC-03 330i B48D B48B20B 2.0 Petrol 5A17B00

£151.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 8792258

BMW X3 G01 Panorama Sunroof Roof Wiring Cable Loom Harness Cabling 8792258

£23.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9389560

Aerial Trap Circuit BMW G30 X3 G01 Antenna Amplifier Module Control Unit 9389560

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6854027

ICM Module BMW F12 Safety Module Airbag Sensor Control Unit 6854027

£127.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6821593

NFC Module BMW G11 G12 Near Field Communication Control Unit 6821593

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6964142

BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver-Side 6933266

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 913463601

Seat Module BMW E65 Front Seat Control Unit Module ECU 913463601

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9214813

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

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8689722-2

BMW F32 Engine ECU Control Unit 184 HP 420iX B48 2.0 Petrol B48 8689722 KIT

£455.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 8598759-4

BMW F20 F30 LCI 120d 320d 163HP B47 Engine Unit ECU Kit DDE 8598759 Automatic

£208.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6992955

BMW F25 Footwell Light Control Module ECU Unit FRM3 TEMIC 6992955

£94.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8574351-2

BMW X1 E84 18dX Diesel N47N Engine Unit ECU Kit DDE 8574351 Manual

£113.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8510832

BMW E90 E91 LCI N47N 318d 143HP Engine Control Unit ECU DDE 8510832 Automatic

£142.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 9199305

KaFAS Camera BMW F10 F11 Rear View Control Unit Module 9199305

£75.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9314229

BMW F20 Front Electronic Module Body Control Unit FEM ECU 9314229

£246.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 9844140-1

BMW X3 G01 M40iX xDrive B58D 360HP Engine Control ECU Kit 9844140 Automatic

£712.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8380944-1

BMW E46 E65 E66 E67 Aerial Antenna Amplifier Radio Signal Trap Circuit 8380944

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8517862-6

BMW F20 F30 F32 120d 320d 420d N47N 184HP ECU Kit DDE 8517862 + Key + FEM Manual

£142.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A898F2

BMW F70 F74 F78 Parking Brake Wiring Harness Cable Rear 5A898F2

£37.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6924879

Front Seat Module BMW E60 E61 E65 E66 Control Unit ECU 6924879

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8572873-1

BMW F10 F11 535d F13 640d N57Z 313HP ECU Kit DDE 8572873 Key CAS4 Automatic

£332.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7853460

Gearbox Wiring BMW F87 M2 N55 Engine Automatic Loom Harness Cables 7853460

£94.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8605530

Engine Unit Bracket BMW G30 G31 G11 G15 ECU Module Holder Bracket Mount 8605530

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9149674

BMW 3 5 Series E60 E90 Portable DVD System Alarm Ultra Sonic Module Unit 6980090

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9264572

BMW E90 LCI Junction Box Body Control Module H1 PL2RR JBBFE IIIR 9264572

£66.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8518568

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP Engine Control ECU DDE 8518568

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9289679

BMW X5 F15 X6 F16 Antenna Amplifier Control Unit Module 9289679

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7446712

BMW F23 Cabrio Convertible Folding Top Roof ECU Control Unit CVM Module 7446712

£108.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9251722

BMW F20 Front Left Door N/S Wiring Loom Harness Cables 9251715

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9140942-BAR1

BMW E87 E90 E91 LCI Rear PDC Ultrasonic Parking Sensor SET X2 Barberarot - A39

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7802929

BMW 5 7 E60 E61 E65 M57N M57N2 Compact Alternator Generator VALEO 170A 7802929

£132.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 8661835

BMW F45 Active Tourer 225xe High Voltage Inverter Converter Unit 8661835

£398.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6822586-1

DAB Bluetooth BMW F10 LCI F20 F21 F30 F31 Head Control Unit Module Basic 6822586

£70.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9209447

Antenna Amplifier BMW F01 Aeral Diversity 868 MHZ Control Unit FM DAB 9209447

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A433A0

BMW i4 G26 Air Conditioning Pump Wiring Harness Cable 5A433A0

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8590019

BMW G30 G31 Engine Wiring Harness Supply Line Cable 530d B57 Diesel 8590019

£113.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 9355750

BDC Module BMW X5 F15 Body Domain Controller BDC Unit 9355750

£142.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9360372

BMW X6 F16 Fuse Box Power Distribution Relay Control Unit Box Rear 9360372

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8582155-1

BMW F20 F30 F32 120dX 320dX 420dX 184HP N47N Engine ECU Kit DDE 8582155 FEM Key

£189.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5B5D979

BMW F74 M235iX B48R 300HP Engine Control Unit ECU Set DME 5B5D979 Automatic

£617.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 6828077

BMW G01 Fuse Box Grouping Fuse Placement Map Card Diagram 6828077

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9313992

BMW F13 Front Seat Control Module Unit ECU Left Right N/O/S 9313992

£42.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6940763

BMW 7 Series E65 E66 E67 Ultra Sonic-Module 6940763

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8511372

BMW F01 F07 530d 730d N57 Engine Control ECU Kit DDE CAS4 8511372 Automatic

£80.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8713127

BMW F90 M5 F91 M8 G30 Fuse Box Power Distribution Control Unit Box Rear 8713127

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9233592

BMW F10 F11 Sound Amplifier Module Unit Harman/Becker 9233592

£94.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9365054

BMW F30 Wiring Harness Loom Rear Trunk Lid Boot Tailgate 9365054

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8577764

BMW F10 F11 520d Diesel N47N 184HP ECU Kit DDE 8577764 + Key + CAS4 Manual

£284.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8603352-5

BMW F20 F21 F30 N13 1.6 170HP Engine Control Module ECU DME Kit 8603352 Manual

£379.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 8740343-3

BMW F20 F30 F32 LCI 120i 320i 420i B48 184HP Engine Control Unit ECU DME 8740343

£332.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8511385-4

BMW F10 F11 530d N57 245HP Control Unit ECU Kit DDE 8511385 CAS4 Keys Automatic

£218.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7545165

BMW E87 E90 116i 316i Petrol N45 Wire Wiring Harness Engine Gearbox Mod Loom

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8507202-5

BMW E90 E91 LCI 318d N47N 143HP Engine Control ECU DDE 8507202 Automatic

£47.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8621190

BMW F20 F22 F30 LCI Electric Line Cable Power Distribution Module 8621190

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8781328

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 8781328

£94.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8725027

Door Wiring BMW F44 Gran Coupe Door Wiring Harness Loom Driver's Side 8725027

£47.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8621500

BMW F20 F21 F30 LCI Petrol N13 N20 Cable Alternator Starter Base B+ 8621500

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9209172

BMW X3 F25 X4 F26 Optical Ladder Conductor Cable Wire Unit 9209172

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8796098

BMW i3 I01 Body Comfort Control Unit BDC Module ECU Lear 8796098

£146.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7795779

BMW 5 Series E60 E61 Cable Alternator Starter Base B 520d Diesel M47N2 7795779

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9377155

BMW F20 F23 F34 F82 Telematics Module Bluetooth Telematik Control Unit 9377155

£123.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7811700-10

BMW E81 E87 E90 E91 120d 320d N47 Engine Control Unit ECU DDE 7811700 Automatic

£142.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9353646

BMW i3 I01 Control Unit Charging Module ECU 9353646

£142.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9225014-1

BMW F23 F30 Distributor External Ignition Base Control Unit Module 9225014

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A656B3

BMW G20 Air Module Control Unit SRS ECU 5A656B3

£161.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9229847

BMW E70 Door Wiring Front Passenger Door Loom Cables Harness 9229847

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8693213-2

BMW F30 LCI 330e B48X Engine Control Unit ECU Kit DME 8693213 FEM Key Automatic

£617.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6864923

Air Module BMW F01 F02 LCI F07 GT F10 F11 F13 ECU Control Unit 6864923

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9379832

BMW X3 F25 X4 F26 Door Wiring Loom Harness Cable Driver's Side 9379820

£37.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9383699

BMW X3 F25 X4 F26 Footwell Light Control Module Unit 9383699

£94.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9436419

BMW X4 M F98 Body Control Module Domain Controller Unit BDC ECU 9436419

£237.95

Free delivery: Jul 14

If paid before 14:00

Part no. rhd-9246208

Head Up Display BMW F12 F13 Hud Projector Dash Screen Control Module 9246208

£75.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A43DE2

BMW F40 Body Domain Controller BDC Control Unit Module ECU 5A43DE2

£189.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9315130

Door Wiring Harness BMW F25 Rear Left Right Door N/O/S Wiring Loom 9315130

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9267517

BMW X3 F25 X4 F26 Central Gateway Module Control Unit Lear 9267517

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 3452223

BMW X3 Series E83 LCI Wiring Harness Engine Gearbox Module 3452223

£23.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6971884

BMW X5 X6 Series E70 E71 Front Central Bass Subwoofer Speaker HiFi 6971884

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9139868-BS

BMW X3 E83 LCI X5 E70 LCI PDC Parking Ultrasonic Sensor Black Sapphire - 475

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9142218-SBG

BMW X3 E83 LCI PDC Parking Ultrasonic Sensor Silbergrau - A08 9139866 SET X2

£23.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9247088

BMW X1 Series E84 Wiring Loom Harness Passenger Side 9233559

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8582280-9

BMW F20 F30 F31 118d 318d N47N 143HP Engine Unit ECU DDE Kit 8582280 FEM + Key

£85.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7811176

Wiring BMW X3 F25 Automatic Gearbox Module Engine Wiring Harness 7811176

£94.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 9163173

BMW E60 E61 LCi Right Left Rear Door Wiring Loom N/O/S 9120797

£13.95

Free delivery: Jul 14

If paid before 14:00

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