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 Z4 Series E85 Roadster Battery Lead Positive Cable Plus Pole 6935667

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6989080-OLI

BMW E65 E66 E67 PDC Rear Parking Sensor Ultrasonic Olivin Metallic

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6850783

BMW F01 F02 LCI F06 F10 F11 F13 ECU ICM Control Unit Air Module 6850783

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A085E6

BMW G30 Wiring Harness Loom Cable Door Rear Left Right N/O/S 5A085E6

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9248096

Air Module BMW F01 F02 LCI F06 F10 F11 F13 ECU Control Unit ECU 9248096

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6857262

Air Module BMW F01 F02 LCI F10 F11 F13 ICM SRS Control Unit ECU Bosch 6857262

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9192665

BMW X3 F25 Positive Battery Clamp Point Cover Wiring Loom 9192665

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7638005

BMW F20 F30 F32 Earth Ground Cable Negative Battery Lead Wiring 7638005

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6945147

BMW 5 6 Series E60 E61 E63 Passenger Door Airbag Control Module 6945147

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7075907

BMW Z4 E85 Left N/S Contact Bush 7075907

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8507885

BMW 1 3 Series F20 F30 Diesel N47N Wiring Harness Engine Gearbox Module 8507885

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8408383

Parking Sensor PDC BMW X5 E53 Front Cover Control Primed 8408383

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6924389

BMW Z4 Series E85 E86 Battery Positive Cable Fuse Box B Base 6924389

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6842986

BMW F20 F30 F31 Mini F55 F56 F60 Control Unit Air Conditioning Module 6842986

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9289247

BMW F01 F02 F10 F11 CD Radio Head Unit CIC 9289247

£142.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7789755

BMW 5 6 Series E60 E61 E63 E64 LCI Cable Starter-Base B 7789755

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8579479-2

BMW F20 F21 F30 116d 316d N47N 116HP Engine Control Unit ECU DDE 8579479 Manual

£75.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6987546

BMW 1 X5 Series E53 E87 Hands-free Bluetooth Charging Module MULF Unit 6987546

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9263791

BMW X5 E70 Footwell Light Module Control Unit ECU FRM II AHL Lear 9263791

£170.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9197177

BMW E82 Footwell Light Module Control Unit ECU NSW PL2 FRM II 9197177

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9462542

BMW F20 F21 F30 F31 Mini F56 Air Conditioning Module A/C Control Unit 9462542

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9380323

BMW 5 Series F10 Steering Column Module Electronic Control Unit ECU 9380323

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6957761

BMW 5 6 Series E60 E61 E63 Passenger Door Airbag Control Module 6957761

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A2D553

Audio Receiver BMW F40 G22 G30 G31 X3 G01 DAB ECE Control Unit Module 5A2D553

£61.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9258231

BMW 1 3 4 Series F20 F30 F32 Seat Wiring Loom Electric Harness 9258231 9258228

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8514577

BMW X3 F25 Diesel N47N Engine Gearbox Wiring Loom Harness 8514577

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9222855

BMW X5 X6 Series E70 E71 Navigation System Car Computer CIC 9222855

£284.95

Free delivery: Aug 28

If paid before 14:00

Part no. RHD-7570542

BMW E81 E87 E90 Wiring Harness Loom Gearbox Engine N43 7570542

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9244392

BMW F10 ECU Body Control Module V2 PL6 JBBFE III Junction Box 9244392

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9496820

Crash Sensor BMW G20 G26 G80 Front Door Left Right N/O/S Air Impact Unit 9496820

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 1393415-2

BMW E90 E91 F10 Mini R50 R52 Change Over Contact Relay Grey 5 Pins Set 1393415

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6837092

BMW G30 G12 Fuse Relay Box Rear Trunk Power Distribution B + Box Basis 6837092

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9825936

Dashboard Monitor BMW F90 M5 G30 Onboard Central Display Screen 10,25" 9825936

£284.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8512043-5

BMW E90 E91 LCI 318d N47N 143HP Engine ECU Kit DDE 8512043 CAS3 Key Manual

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9367693

BMW M5 F90 G11 G12 Power Distribution Relay Fuse Box Make Contact 9367693

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8586572

Engine Wiring BMW F20 LCI F30 F31 B47 Automatic Gearbox Loom Harness 8586572

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9281722

BMW E93 Cabrio Convertible Folding Top Roof ECU Module CTM 9281722

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6902285

BMW E39 E87 E90 E91 Trigger Contact PDC Sensor Tweeter Gong 6902285

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7801217-4

BMW X3 E83 3.0d M57N2 218HP ECU Control Unit Kit DME 7801217 EWS3 Key Automatic

£161.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9359013

Control Unit BMW F01 F02 F07 F10 F11 CAS4 Key Reading Module 9359013

£66.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7555185

E-Box Fan BMW X5 E70 X6 E71 Sunon Cooler PSD1205PIBX-A 13.5V 7555185

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6822586

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

£113.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7391042

BMW F10 F30 X1 F48 Mini F54 Rear Tailgate Smart Opener Top Wire Sensor 7391042

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9259354

BMW F10 F20 F30 Camera Module Reversing Rear View Camera Control 9259354

£51.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8510221-8

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8510221 CAS3 + Key

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6994548

BMW G30 G31 Body Control Comfort Module Unit FEM BDC ECU V04 6994548

£237.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7177697-3

Plug Socket BMW E61 LCI Rear Lamp Touring Trunk Lid Wiring Left N/S 6984746

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8634244

Engine Wiring BMW F45 Mini F60 B38 Loom Harness Injection Valve Ignition 8634244

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6939709

BMW 5 6 Series E60 E61 E63 Driver Side Door Airbag Control Unit Module 6939709

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8582279

BMW F30 320d ed Diesel N47N 184HP Engine Control Unit ECU DDE 8582279

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9141446

BMW E93 Cabrio Convertible Hydraulic Pump Power Supply Cable 9141446

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6951537

BMW 1 Series E87 ECU Body Control Module Unit PL2 JBBFE 31656951537 6951537

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7799855-1

BMW X3 Series E83 M47N2 2.0d 150HP ECU Kit DDE + EWS3 + Key 7799855 Manual

£170.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9316569

BMW X5 F15 Fuse Box Rear Relay Module Control Unit 9316569

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7316218

Headlight Module BMW F01 F02 LCI Xenon Headlamp Control Unit Lear TMS 7316218

£42.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8518569-4

BMW F20 F21 F30 F31 N47N 116d 316d Engine Control Unit ECU DDE 8518569 Automatic

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7541009

BMW E90 E90N E91 E91N E92 E92N E93 LCI NOX Wiring Loom Cable 7541009

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7176068-2

BMW 3 6 X3 Series E46 E63 E83 MINI R50 R53 Control Unit Xenon Light 1307329074

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7595179-15

BMW E81 E87 LCI N43 116i 1.6 122HP ECU Control Unit Kit DME 7595179 CAS3 + Key

£123.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 8518268-3

BMW E90 E91 LCI 318d Diesel 143HP N47N ECU Kit DDE 8518268 + CAS3 + Key Manual

£104.95

Free delivery: Aug 28

If paid before 14:00

Part no. 4869809-3

BMW E82 E88 Rear Lamp Taillight Tail Light Left N/S Harness Wire Loom 7285641

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9128982

BMW F20 F30 F31 LCI Mini F55 F56 Compensator LTE UK Control Unit Module 9128982

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7807828-3

BMW E87 LCI E90 118d 318d N47 143HP Diesel ECU KIT DDE 7807828 CAS3 + 2 Keys

£89.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A693C7

Distribution Box BMW G11 G12 G30 G31 Hybrid Junction Point B+ Rear 5A693C7

£161.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9249462

BMW F07 GT X3 F25 Camera Module Reversing Camera Rear View Control Unit 9249462

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8506374-4

BMW E81 E87 E90 LCI 120d 320d N47 ECU Kit DDE 8506374 CAS3 + Key Automatic

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9353423

BMW F06 ECU Body Control Module Junction Box PL6 JBBFEIII 9353423

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8509910

BMW X3 F25 X4 F26 Engine Electronics Control Unit Box Cover Trim 8509910

£21.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6819652

Map Fuse Box BMW F15 F16 F85 F86 Grouping Diagram Card 6819652

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8589141-6

BMW F20 F21 LCI B37 116ed 116HP Engine Unit ECU DDE 8589141 Lock CAS4 Key

£455.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 5A4FAA3-2

BMW G30 LCI 530e Front Bumper Pedestrian Protection Shock Crash Sensor 5A4FAA3

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9252125

BMW X3 F25 Control Module Junction Box Electronics LEAR JBBFE III 9252125

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6857300

Air Module BMW F01 F02 LCI F10 F11 F13 ICM Crash Control Unit ECU 6857300

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9300859

BMW X5 F15 Fuel Tank Cable SCR AdBlue Unit Adapter Wiring Harness Diesel 9300859

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6868257

Air Module BMW X5 F15 X6 F16 ECU ICM Control Unit 6868257

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6966551

BMW 5 Series E60 E61 Front Door Wiring Loom Harness Passengers Side 6966549

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8518477-3

BMW X3 F25 20dX 184HP N47N Engine Unit ECU Kit DDE 8518477 Key CAS4 Automatic

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8578504

BMW F30 LCI 335dX N57Z Engine Gearbox Module Wiring Cable Loom Harness 8578504

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7624617-1

BMW F20 F21 F30 F31 F32 Cable Alternator Starter Base B 7624617

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8583091

BMW X5 E70 G11 Integrated Supply Module Ecu Control Unit 8583091

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8574752-1

BMW F25 20dX B47 190HP Engine Unit ECU Kit DDE 8574752 CAS4 Key Automatic

£332.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8642682

BMW 3 Series F30 LCI 330e Negative Earth Cable High Voltage Battery 8642682

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8507136-1

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8507136 CAS3 + Key

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6868254

BMW F33 ECU ICM Control Sensor Unit Air Module ECU 6868254

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6960428

BMW 3 5 6 Series E60 E61 E63 E64 E90 E91 FBAS Analog Video Module Unit 6960428

£127.95

Free delivery: Aug 28

If paid before 14:00

Part no. RHD-5A2DA15

BMW F40 Power Steering Rack Wiring Harness Loom Cable 5A2DA15

£32.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9259466

BMW 1 3 4 Series F20 F21 F30 F31 F32 Power Distribution Fuse Box Rear

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9122100

BMW 1 Series E88 Mini Cooper R57 R59 Sat Nav GPS Antenna Amplifier 9122100

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9337233

BMW F32 F33 F82 F83 M4 Door Wiring Front Harness Loom Cable 9337233

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6863389

BMW F20 F21 F30 F31 ECU ICM Plus Control Unit Module Airbag 6863389

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7621178-5

BMW E81 E87 LCI E90 N43 118i 318i Engine Control ECU DME Kit 7621178 Automatic

£313.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 7599881-20

BMW E87 LCI E90 120i 320i Petrol N43 170HP ECU KIT DME 7599881 CAS3 Key Manual

£123.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6948048

BMW Z4 E85 Front Door Wiring Loom Cable Right O/S Harness 6948048

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8510221-10

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8510221 CAS3 + Key

£113.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 9212176

Door Cable BMW F01 F02 Front Right O/S Wiring Loom Harness 9212176

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9192666

BMW F01 F10 F11 Cover Positive B Battery Terminal Point Case 9192666

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9267468

Body Control Module BMW F11 ECU Junction Box 3 PL6 JBBFE III V7 9267468

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A34C94

BMW X1 F48 Catalytic Reduction System Module Unit 13264014

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9179595

BMW X3 E83 Board Monitor Central Information Display Screen 6,5" 9179595

£180.95

Free delivery: Aug 28

If paid before 14:00

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