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 G30 G31 Rear Door Wiring Loom Harness Cable Right O/S 8730190

£32.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7514342-1

BMW 5 Z4 Series 1 E34 E85 Base B Terminal Point Engine Compartment 7514342

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9353066

BMW F20 F21 F30 F31 Relay Cover Electric Fan Relay Cap 9353066

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9153135

BMW F01 F02 F03 Holder Bracket Control Unit Amplifier 9153135

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6974370

Alarm System Unit BMW E60 E61 Ultra Sonic Module 6974370

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9368338

BMW 3 F30 LCI 330e Hybrid Battery Cooling Refrigerant Double Pipe 9368338

£23.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8519005

BMW X1 E84 18dX Diesel N47N 143HP Engine Control Unit ECU DDE 8519005 Manual

£94.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6946073

BMW E46 Battery Cable Positive Plus Lead Wire 6946073

£123.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 8510829-6

BMW E90 E91 LCI N47N 320d 184HP Engine Control Unit ECU DDE 8510829 Automatic

£37.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6956750

BMW E87 Control Unit PDC Parking Sensor Module Nautikblau Blue - A21 6956750

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8714475

BMW F40 Front Door Wiring Cable Harness Loom 8714475

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A37035

BMW i4 G26 Gran Coupe Front Driver's Door Wiring Harness Right O/S 5A37035

£56.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6980089

BMW 5 Series E60 E61 Alarm System Unit Ultra Sonic Module 6980089

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8572418-2

BMW X3 F25 Diesel 2.0dX 184HP N47N Engine ECU Kit DDE 8572418 Key CAS4 Automatic

£142.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 6868724

BMW X5 F15 F85 X6 F16 F86 ICM Control Unit ACC Support V-5.7 6868724

£284.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 9191408

BMW X1 Series E84 Wiring Cable Loom Set Rear Door Left Right N/O/S 9191408

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6819936

BMW F30 F31 F32 F15 F16 Rear Door Card Light Lamp LED Wiring Harness 6819936

£47.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9259021

BMW F01 F07 F10 F11 F12 Camera Module Based Assist Systems Control Unit 9259021

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A37073

BMW i4 G26 Gran Coupe Electric Front Door Wiring Harness Left N/S 5A37073

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8474730-4

BMW F20 F21 F30 F31 LCI 120d 320d B47 190HP Engine ECU Kit DDE 8474730 Automatic

£189.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9153136

BMW F01 F02 F03 LCI Holder Bracket Control Telematics Unit 9153136

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8715740

BMW F32 F33 F87 M2 Telematics Control Module Unit ECU 8715740

£113.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8572458

BMW F07 GT 535d N57Z 313HP Engine ECU Kit DDE 8572006 CAS4 + Key Automatic

£474.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8377415-1

BMW 5 6 Series E60 E61 E63 E64 Fuel Fillter Flap Cover Actuator 8377415

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6904165

BMW X5 E53 Front Dashboard Centre Console Lighter Wiring Loom Harness 6904165

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8513250-3

BMW F10 F11 520d Diesel N47N 184HP Engine ECU Kit DDE 8513250 CAS4 Key Automatic

£170.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9378012

BMW G30 G31 F90 Head Up Display Dashboard Car System Screen 9378012

£222.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6819934

BMW X5 F15 X6 F16 Front Door Card Light Wiring Loom Left Right N/O/S 6819934

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A68279

BMW i4 G26 Hybrid Electric Negative Battery Lead Cable Wiring Terminal 5A68279

£37.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A37095

BMW i4 G26 Gran Coupe Electric Rear Door Wiring Harness Right Left N/O/S 5A37095

£42.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9226365

BMW F10 F11 Head Unit Basis Media Navigation System Controller Headunit 9226365

£75.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8506566-6

BMW E90 E91 LCI 320d N47N 163HP Engine Unit ECU Kit DDE 8506566 CAS3 Key Manual

£94.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6839821

Battery Cable BMW G01 G02 F97 F98 Positive Plus Pole Lead L= 712MM 6839821

£66.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7809001-4

BMW E81 E87 LCI E90 118d 318d N47 Diesel ECU KIT DDE 7809001 + CAS3 Keys Manual

£113.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6926048

BMW 7 Series E65 E66 E67 Ultra Sonic-Module 6926048

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8578945-6

BMW F20 F21 F30 116d 316d N47N 116HP Engine Control ECU Kit DDE 8578945 Manual

£199.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9113247

BMW E61 E65 X5 E70 E90 Telematics ECU Control Unit GSM 9113247

£37.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6957807

BMW X3 E83 Amplifier For Stereo System Harman/Becker AMP 6957807

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. RHD-6815500-1

BMW F10 F11 Head-Up Display Screen HUD Control Unit Module 6815500

£85.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5B4DB79

Audio System Amplifier BMW F40 F44 G20 G21 RAM21 Module Control Unit 5B4DB79

£322.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6841420

AdBlue Adapter Cable BMW F30 F31 F36 Lead Wiring Harness Loom 6841420

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9364669

BMW F10 F11 LCI Active Sound Unit Control Module Design Amplifier 9337754

£51.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6814609

BMW 1 3 5 Series F10 F20 F30 Bus Interface Connector Data Terminating 6814609

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8789891

BMW F87 M2 LCI Electric Front Bumper Wiring Harness PDC Loom Cable 8789891

£94.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 9134631

Seat Module BMW E65 E66 Front Seat Control Unit ECU 9134631

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9224868

BMW F10 F11 F12 F13 Tweeter Speaker Bang&Olufsen Rear Left Right N/O/S 9224868

£37.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9227766

BMW F11 Touring Tailgate Spoiler Probe AM/FM Sensor 9227766

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8510137-3

BMW F10 F11 520d N47N 184HP Engine Control Module ECU DDE 8513242 Manual

£94.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 6952994

Air Module BMW E60 E63 Control Unit Centre Sensor ECU 6952994

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6938246

BMW 1 Series e87 Wiring loom harness set rear door right left N/O/S 6938246

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6865245

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

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8474731

BMW F30 F31 F32 F33 430d Diesel N57N 258HP Engine ECU DDE 8474731 Automatic

£80.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9393185

BMW F30 F31 F32 F33 F34 F36 Harman Kardon Amplifier Audio HiFi 9393185

£493.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 8511385-5

BMW F10 F11 525d N57 245HP Engine Control ECU Module DDE Kit 8511385 Automatic

£165.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6812248

BMW X1 F48 Front Door Wiring Loom Harness Cable Driver Side 6812248

£37.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7187221

BMW F01 F02 F03 LCI Rear Third Stoplamp Stop Lamp Brake Light 7187221

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 7631767

BMW F20 F21 F30 M135i 335i N55 Engine Wiring Harness Loom 7631767 7614603 Set

£189.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 6910539

BMW X3 3 Series E83 E46 Battery Cable Plus Pole 6910539

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6799602

BMW F07 GT Self-Levelling Suspension Control Unit Module Bracket Holder 6792443

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8580059

Mini F56 F60 BMW F40 F39 Diesel B37 Battery Starter Alternator Wiring 8580059

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9263803-4

BMW E90 Max Brose Footwell Light Module Control Unit FRM3R 9263803

£170.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 5A73DB2

BMW G26 Antenna Amplifier Control Unit Module 5A73DB2

£89.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9327513

Wiring BMW F06 GT F12 F13 Rear Tailgate Wiring Harness Loom 9327513

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8577870

BMW X5 F15 Engine Control Module Unit ECU Diesel 8577870

£569.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 7599378

Transmission Wiring BMW F20 Petrol N55 Automatic Gearbox- Engine Harness 7599378

£61.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8473191

BMW X5 F15 M50d N57X 381HP Engine Control Unit ECU DDE 8473191 Automatic

£284.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9286171

BMW F20 Front Right O/S Wiring Loom Harness Door O/S 9251711

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 1421295

Mini EGS Control Unit Module ECU Programmed 5 Pins 1421295

£23.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6770918-1

BMW E81 E87 E90 E91 Active Steering Control Unit Module Bracket Carrier 6770918

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9393780

BMW F45 F46 Mini F55 F56 F57 KaFAS Camera Front Lane Assist ECU Module 9393780

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8631637

Earth Ground Cable BMW i3 I01 Battery Starter Terminal Wiring 8631637

£23.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9258276

BMW E90 E91 LCI Business System Car Infotaiment Computer CIC Head Unit 9258276

£94.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8733503

BMW F30 Fuse Box Front Body Control Module ECU BCM Unit 8733503

£94.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8715719

BMW G20 320i Fuse Relay Box Control Unit Rear Power Distribution 8715719

£37.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8707752

BMW F20 F32 FEM Control Unit Module ECU 8707752

£142.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9311039

Navigation Module BMW F10 F20 F22 F30 F32 Sat Nav DAB Head Unit High 9311039

£189.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6913363

BMW E65 Glovebox Glove Box Dash Storage Wiring Harness Cable 6913363

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9207416

BMW X6 E71 Map Card Fuse Box Grouping Diagram 9207416

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. RHD-8516446

BMW X5 F15 X6 F16 Wiring Loom Harness Gearbox Diesel N57 8516446

£66.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9292946

BMW F30 F31 Front Electronic Module Control Unit FEM 9292946

£161.95

Free delivery: Jul 14

If paid before 14:00

Part no. 5A90876

BMW U06 Underfloor Cable Harness Positive Battery Wiring Lead Cable 5A90876

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9277951

BMW X5 E70 X6 E71 Control Unit Module Top Rear Side View Camera 9277951

£56.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6960223

Airbag Module BMW E65 E66 Sensor Driver's Side Air Bag Control Unit 6960223

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8579479-3

BMW F20 F21 F30 F31 116d 316d N47N 116HP ECU Kit DDE 8579479 Key FEM Automatic

£123.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8589145-1

BMW F20 F30 LCI 120dx 320dx B47 Engine ECU Kit DDE 8589145 FEM + Keys Automatic

£137.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8582280-11

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

£142.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 7800130-1

BMW E46 ECU Engine Control Unit DDM EWS KIT 320Cd M47N 150 HP Diesel 7800130

£113.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 9388183

BMW F45 Active Tourer Body Control Module ECU 9388183

£113.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 5A30777

BMW U06 Active Tourer Battery Cable Lead Negative 5A30777

£28.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9270490

BMW X5 F15 Antenna Aerial Diversity Trap Circuit Control Module 9270490

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. rhd-7516831

BMW 7 Series E65 E66 735i 745i Petrol N62 Engine Ignition Module Wiring 7516831

£18.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9878327

Air Conditioning Module BMW G11 G20 G21 G30 Control Unit ECU 9878327

£32.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9389069

BMW F20 F21 F30 F31 F32 X5 F15 X6 F16 Power Distribution Fuse Box Front 9389069

£23.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9258589

BMW F40 F92 G20 Parking Distance Ultrasonic Sensor Control Module Unit 9258589

£61.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6854028

BMW F06 F10 F11 F12 F13 ICM Control Unit Module Air Module ECU 6854028

£104.95

Free delivery: Jul 15 – 22

If paid before 14:00

Part no. 8585731

Engine Wiring BMW F30 F31 F36 N47N xDrive Automatic Gearbox Loom Harness 8585731

£66.95

Free delivery: Jul 14

If paid before 14:00

Part no. 8573773-1

BMW F10 F11 530d Diesel N57N Engine ECU Kit DDE 8573773 + CAS4 + Key Automatic

£284.95

Free delivery: Jul 14

If paid before 14:00

Part no. 6956482

BMW E81 E87 E90 E91 Control Unit Air Module ECU NO CRASH DATA 6956482

£13.95

Free delivery: Jul 14

If paid before 14:00

Part no. 9247481

BMW X3 F25 Control Module CAS Unit ECU 20dX Diesel N47N 9247481

£94.95

Free delivery: Jul 14

If paid before 14:00

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