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

£237.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9231466

BMW 2 3 4 Series F22 F30 F32 Antenna Amplifier Module Trap Circuit 9231466

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8506199-2

BMW E60 E61 LCI 520d N47 Diesel Engine ECU Kit DDE CAS3 + Key 8506199

£142.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8585641

Engine Wiring BMW F20 F21 F30 F31 N47N Diesel Loom Harness Cable 8585641

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. RHD-9865043

Head Up Display BMW F30 F31 Hud Projector Dash Screen Control Module 9865043

£75.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9438731

BMW F20 F21 F22 F30 F31 F32 F36 Body Control Module Unit FEM LR01 9438731

£123.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 9202724

BMW 3 Series E90 E91 E92 AUX USB Lead Cable Wire 61129202724 9202724

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6882969

BMW F20 F21 F30 F31 ECU ICM Plus Control Unit Module Air Module 6882969

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 3417160

BMW X3 E83 LCI Cable Alternator Starter Base B 3417160

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9312766

BMW F11 BCM Body Control Module Unit Electronic Junction Box ECU 9312766

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A70A60

BMW X3 G01 Parking Distance PDC Module Control Unit 5A70A60

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6972611

BMW 5 Series E60 E61 Wiring Rear Left Right Door Cable Harness N/O/S 6982362

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9347718

BMW F33 F83 M4 Cabrio Boot Trunk Lid Tailgate Wiring Harness Loom Cable 9347718

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6827159

Audio Amplifier BMW F20 F21 F22 Harman/Kardon Active Sound Design System 6827159

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9309823

Camera Module BMW F01 LCI F07 F10 F11 Based Assist Systems Control Unit 9309823

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6798242

ICM Module BMW F10 F11 Integrated Chassis Management QL ES Control Unit 6798242

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8474730

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

£284.95

Free delivery: Aug 28

If paid before 14:00

Part no. RHD-9251191-2

BMW F10 F12 F25 F26 Lever Gear Selector Switch Automatic Transmission 9251191

£80.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8635813

Engine Wiring BMW F20 F30 F31 LCI B38 Valvetronic Servomotor Cable Loom 8635813

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A923C4

BMW F40 G20 G21 G30 G31 X3 G01 HiFi Audio Sound Amplifier RAM Module 5A923C4

£104.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7558911

BMW 1 Series E81 E82 E87N E88 NOx Cable Wiring Petrol 7558911 12517558911

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 3405815

BMW X3 Series E83 E83N Inclination Indicator Alarm System 65753405815 3405815

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8517862-1

BMW F10 F20 F30 F32 Engine Control Unit Diesel N47N ECU DDE 8517862 Automatic

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9298961

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9298961

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6964140

BMW 7 Series E65 E66 Control Unit Door Rear Passenger Side 6933264

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8513250

BMW F10 F11 520d Diesel N47N 184HP Engine Control Unit ECU DDE 8513250 Automatic

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9290014

BMW X3 F25 Light Module Control Footwell ECU Unit FRM3 9290014

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6992830

BMW F10 F20 F30 Mini F55 F56 KaFAS Camera Front Control Unit Module ECU 6992830

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7516376

BMW E65 E66 E67 Electric Valve 735i 745i 735Li 745Li 745LiS 7516376

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9301522

BMW F01 F02 F07 F10 F11 CAS4 Control Unit Key Reading Module 9301522

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9299594

Central Gateway BMW X3 F25 X4 F26 Module Control Unit Lear ZGW-02 4SK 9299594

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7352602

BMW X1 Series F48 Right Head Air Module Roof Curtain O/S 7352602

£75.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9290799

BMW 1 2 3 4 Series F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9290799

£89.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8801702

BMW G30 Dashboard Central Information Display 10,25" On Board Monitor 8801702

£113.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A57781-1

BMW F40 M135i B48 306HP Engine Unit ECU KIT DME 5A57781 BDC Key Automatic

£237.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 8573257-5

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP ECU Kit DDE 8573257 + Key + FEM

£113.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 9350705

BMW X3 F25 Body Control Module ECU Junction Box JBBFE III V8 9350705

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8573260-10

BMW F20 F21 116d Diesel N47N 116HP ECU Kit DDE 8573260 + Keys + FEM Manual

£142.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 6871062

BMW F01 F07 F10 F12 VDC Module Rear Suspension Level Control Unit 6871062

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7804127

BMW E60 E61 LCI 520d Cable Alternator Starter Base B 7804127

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8518477

BMW F10 F30 320d 520d ed 163HP Engine Control Unit N47N ECU DDE 8518477 Manual

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8662411

BMW F20 LCI 118i F30 LCI 318i B38 136HP Engine ECU Unit DME 8662411 Automatic

£142.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8387551

BMW 3 Series E46 Battery Positive Cable Fuse Box Base B 8387551

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-7570552

BMW E87 LCI E90 118i 318i N43 Wiring Loom Harness Automatic Gearbox 7570552

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8518424-4

BMW F20 F30 118d 318d N47N 143HP Engine ECU Kit DDE 8518424 Automatic

£113.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8511385

BMW F10 F11 525d N57 204HP Engine Control Unit ECU Module DDE 8511385 Automatic

£170.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6910542

BMW 3 X3 Series E46 E83 Battery Cable Plus Pole Power Positive 6910542

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6941485

BMW X5 X3 E53 E83 Control Module Unit Sliding Lifting Roof

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-9282076

BMW X5 F15 Surround View Camera Control Unit Module Bracket Holder 9282076

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6820729

Bluetooth Module BMW F20 LCI F22 X3 F25 F32 Telematics Control Unit 6820729

£75.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9387151-1

BMW F30 Hybrid 330e B48X Positive Battery Lead Cable Starter Unit Wiring 9387151

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9339825

BMW G11 G30 G31 Power Supply Module High Voltage Battery Terminal Point 9339825

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8635815

BMW F20 F30 LCI 118i 318i B38 Gearbox Wiring Loom Harness Cable 8635815

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9399247

BMW F20 F30 F31 F32 ECU Camera Module Based Drive Support

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7602220

BMW E60 E61 E63 LCI Petrol N52N ECU Engine Control Unit 7602220 5WK91142 DME

£237.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A4FAA3-1

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

£80.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9321023

BMW F45 X1 F48 Mini F55 F56 B+ Junction Terminal Power Distribution Box 9321023

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9301308

BMW F20 F21 F22 F30 Control Unit Air Conditioning System 9301308

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6863387

Air Module BMW F20 F23 F30 F32 F36 Safety Control Module ICM Plus Unit 6863387

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9204545

Hands Free Bluetooth Module BMW E81 E87 E90 E91 Electronics MULF2 9204545

£75.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6941593

BMW 5 Series E60 Light Control Module Unit Lear LME6X (LCM) 6941593

£70.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9200944

BMW 3 X1 E84 E91 Ultra Sonic Burglar Alarm System Sensor Module 9200944

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7556880

Engine Wiring BMW Z4 E85 E86 Petrol N52 Loom Harness Module Manual 7556880

£189.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 3419273

BMW X3 SERIES E83 LCI Cable Alternator Starter Base B 3419273

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8510221-1

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 CAS3 + Key

£218.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 8574095

BMW F20 F21 F30 F31 116d 316d 118d 318d Diesel N47N Engine ECU 8574095 Manual

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8699235

BMW F30 Fuel Pump Module Fuel Pump Control Unit ECU 8699235

£32.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9274023

BMW F20 F21 F30 F31 REM Rear Electronic Module Fuse Box Control Unit V3 9274023

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8506574-1

BMW E70 40dX N57S 306HP Engine Control Unit ECU Kit DDE 8506574 CAS3 Key

£664.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8517874-6

BMW F20 F21 116d N47N 116HP ECU Kit DDE 8517874 + Key + FEM + Lock Manual

£189.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 9271933

Radio Player BMW F10 F11 Audio CD Champ 2 Head Unit MID 9271933

£75.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9251524

BMW i3 I01 Holder Audio Amplifier Telephone Bracket Mount Trim 9251524

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7599881-10

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

£142.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9330542

BMW G30 G31 Fuse Distribution Box Holder Control Unit Bracket Carrier 9330542

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9344680

BMW 2 F23 Cabrio Boot Trunk Lid Tailgate Wiring Harness Loom Cable 9344680

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9345379

BMW X3 F25 Footwell Light Control Module ECU Unit FRM3 TEMIC 9345379

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A088E6-1

BMW F40 M135i xD B48 306HP Engine Control Unit ECU Kit DME 5A088E6 BDC Key

£617.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 9350064

BMW G11 G12 G30 G31 Battery Cable Plus Pole Power Positive Wire Red 9350064

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7579155-1

Starter Motor BMW X5 E70 LCI X6 E71 Z4 E89 N20 N55 Petrol Engine 7579155

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9219007

BMW 1 3 E81 E82 E88 E92 LCI Front Left Seat Wiring Loom Harness Cable 6943541

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6907520

BMW 5 X5 Series E39 E53 Dual Band Cable Compensator Hands Free Phone 6907520

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9308361

BMW E82 Footwell Light Module Control Unit ECU Basis PL2 FRM3R 9308361

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9371790

BMW 1 Series F20 Telematics Control Unit Module Bluetooth 9371790

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8797520

BMW F45 Door Wiring Front Passenger Door Loom Cable Wiring Harness 9389318

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7555188-1

BMW F01 F07 GT F10 F11 F12 F13 Control Unit Box Cover Cap 7555189

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7649938

BMW Z4 Series E89 Roadster Wiring Loom Harness Engine Gearbox Module Petrol N20

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9134481

BMW 1 Series E87 ECU Body Control Module Junction Box H2 9134481

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8570934

BMW F20 F21 116d ed Diesel N47N 116HP ECU Engine Control Unit DDE 8570934 Manual

£142.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8733500

BMW F20 F21 F22 F30 F31 F32 F36 Front Electronic Module Control Unit FEM 8733500

£66.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9311849

BMW F20 F21 Air Conditioning A/C Climate Control Unit Module ECU 9311849

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7928587

Audio Amplifier BMW F44 G20 G30 Sound System Unit Module ECU 7928587

£189.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7587164

BMW E81 E82 E90 E91 E92 N52N ECU Basic Engine Control Unit DME 7587164 Manual

£142.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9226326

BMW E81 Body Control Module Control Unit L2 PL2RR JBBFE III ECU 9226326

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 3413934-1

BMW X3 E83 Rear Bumper Wiring Loom PDC Harness 3413934

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8573574-2

BMW F06 F12 F13 640d N57Z 313HP Engine Module ECU DDE Kit 8573574 Automatic

£237.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8373700-2

BMW E60 E63 E87 E90 E91 4X Relay Make Contact White Green Set 8373700

£15.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8679681

BMW F45 i3 i01 Mini F60 High Voltage Connector 8679681

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6824387

BMW F20 F21 F22 F30 F31 F32 Body Control Module Unit FEM ECU LR01 6824387

£66.95

Free delivery: Aug 28

If paid before 14:00

Part no. 3417417-1

BMW X3 E83 Boardmonitor Central Information Display Screen 6,5" 3417417

£180.95

Free delivery: Aug 28

If paid before 14:00

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