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.

More information

Make

Ford Transit Custom Mk1 Rear Parking Sensor Wiring Harness Cable BK2T-15K868-AF

£51.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A57242

BMW F40 F44 Body Control Module ECU Control Unit Module 5A57242

£189.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8850971

VDC Module BMW G30 LCI Rear Suspension Damper Control Unit 8850971

£142.95

Free delivery: Aug 28

If paid before 14:00

Part no. A2059000417

Mercedes W205 C300h Hybrid High Voltage Inverter Converter A2059000417

£474.95

Free delivery: Aug 28

If paid before 14:00

Part no. A2058200704

Sunroof Wiring Mercedes W205 X253 Panoramic Roof Motor Cable Harness A2058200704

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9162982

BMW E81 E87 E90 E91 Hands Free Electronics Charging MULF2 9162982

£42.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9338548

BMW X5 F15 Battery Fuse Box Positive Distribution Terminal Housing Cover 9338548

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 4G5971687BH

Audi A6 C7 4G Rear Door Harness Wiring Loom Cable Left Right N/O/S 4G5971687BH

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. CM5T-14B006-AA

Ford Focus Mk3 Air Module Crash Impact Sensor CM5T-14B006-AA

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. A2098200326

Mercedes C209 Body Control Module Unit Temic 376 800 GZ A2098200326

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9177784

BMW X5 E70 X6 E71 X6 E72 Map Fuse Box Grouping Diagram Card 9177784

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 03L906022NP-1

Audi A4 B8 2.0 TDI Diesel CAHA 170HP Engine ECU Kit Ignition + Key 03L906022MK

£85.95

Free delivery: Aug 28

If paid before 14:00

Part no. A4535401007

Smart Fortwo A453 Wiring Harness Cable Loom A4535401007 240558130R

£32.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9426325

BMW F45 G20 G30 Mini F60 Battery Cell Module Circuit Control Unit 9426325

£56.95

Free delivery: Aug 28

If paid before 14:00

Part no. A0005468502

Battery Cover Mercedes W205 W212 Battery Positive Pole Cover Red A0005468502

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8R0907468F

Audi A5 8T Diagnostic Interface Gateway Control Module Unit ECU 8R0907468F

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. A7895464900

Mercedes H243 EQA Connection Box Control Unit Module Distributor A7895464900

£132.95

Free delivery: Aug 28

If paid before 14:00

Part no. JPLA-14B006-DA

Land Rover Range Rover Sport L494 Crash Impact Control Sensor JPLA-14B006-DA

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 4E0035785F

Audi S4 B8 MMI Multimedia AMI Interface Music Control Module Unit 4E0035785F

£113.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7551111

Mini R52 R53 R55 R56 R57 R60 Automatic Transmission Cable Wiring Harness 7551111

Product currently unavailable

Part no. 9128569-2

Wiring Harness BMW E81 E82 E87 LCI E88 Air Valve Air Flap Cable Wire 9128569

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. A2469006918

Mercedes C117 X156 All Wheel Drive Control Unit Module ECU MFA A2469006918

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. YC1A14B321CC

Ford Transit MK6 Restraints Control Module Air Module Unit YC1A14B321CC

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. RHD-9287687

BMW X5 F15 Dashboard Trim Panel Passenger Site Oak Wood Anthracite 9287687

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6949228

Mini Cooper R52 Cabrio Convertible DWA Door Alarm System Module Unit 6949228

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 4F0971679C

Audi A6 C6 Glove Box Storage Compartment Wiring Loom Harness Cable 4F0971679C

£32.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9242523

BMW X5 E70 Footwell Light Control Module Unit 9242523

£151.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 8582802-1

BMW F30 F31 330d Diesel N57N Engine Control Unit ECU Kit DDE 8582802 FEM Key

£218.95

Free delivery: Aug 28

If paid before 14:00

Part no. GX73-18808-DC

Land Range Rover Evoque L551 Front Door Speaker Left Right N/O/S GX73-18808-DC

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9353743

Junction Box Terminal BMW G11 G12 G30 Power Battery Distribution 9353743

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 46356034

Vauxhall Movano C Lambda Oxygen Sensor 2.2 BlueHDI 46356034

£351.95

Part no. 1305715356

Audi TT FV Mk3 8S Front LED Headlight Control Unit Module 1305715356L

£47.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8K0971687B

Audi A4 B8 Door Harness Loom Cable Wiring Rear Left Right N/O/S 8K0971687B

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. HEV30A

Littelfuse HEV30A Bolt Down Ceramic Fuse Power Relay Electrical Unit

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5QS907530A

Audi S3 8Y Diagnostic Interface Data Bus Gateway Control Unit 5QS907530A

£70.95

Free delivery: Aug 28

If paid before 14:00

Part no. A2045455640

Mercedes Benz C E W204 W207 Control Unit Module SAM Bracket Mount A2045455640

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. RHD-7L0907295L

Volkswagen Touareg 7L Audi Q7 4L Fuse Distribution Box Relay Board 7L0907295L

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9241974

Control Unit BMW F01 F02 F07 F10 F11 CAS4 Key Reading Module 9241974

£66.95

Free delivery: Aug 28

If paid before 14:00

Part no. A2048205189

Mercedes-Benz C-Class W204 Aerial Antenna Amplifier Unit A2048205189

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6834171

BMW G30 G31 Seat Wire Harness Cable Loom Front Left N/S 6834169 6834171

£142.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. A2229009507

Mercedes W205 C217 W222 Airmatic Air Suspension Control Module Unit A2229009507

£151.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 8518424-1

BMW F20 F30 118d 318d N47N 143HP Engine Control Unit ECU DDE 8518424 Manual

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. DAN1110

Range Rover Sport L405 Alternator 4.4 SDV8 Diesel Denso DAN1110

£113.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 8K0907064HM

Audi A4 B8 Rear Comfort Convenience Module Control Unit ECU 8K0907064HM

£94.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6958525-1

BMW 5 X5 X6 Series 1 E60 E61 E70 F07 F10 F11 Seat Adjustment Switch Left N/S

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8578946-4

BMW F20 F30 F32 120Xd 320Xd 420Xd N47N Engine Control ECU DDE 8578946 Automatic

£66.95

Free delivery: Aug 28

If paid before 14:00

Part no. A1725408705

Mercedes R172 Electrical Wiring Harness Cable Window Regulator A1725408705

£23.95

Free delivery: Aug 28

If paid before 14:00

Part no. rhd-A2075400510

Starter Wiring Mercedes W204 Alternator Generator Cable Harness A2075400510

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. A2124407038

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124407038

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8H0035464B

Audi A4 B7 Engine Control Unit ECU Module Bracket Holder Retainer 8H0035464B

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. A2059006047

SAM Module Mercedes W205 GLC X253 Rear Comfort Control Unit ECU A2059006047

£104.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8W0907217D

Audi A4 B9 Front Windscreen Windshield Lane Assist Camera 8W0907217B

£180.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8577838-1

BMW F10 LCI 530d N57N 258HP Engine Unit ECU Kit DDE 8577838 CAS4 Key Automatic

£284.95

Free delivery: Aug 28

If paid before 14:00

Part no. RHD-7L0937615G

Porsche Cayenne 92A Fuse Box Relay Control Unit Module 7L0937615G

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. MB3B-10723-F

Volkswagen Amarok Mk2 Ford Ranger Mk4 Battery Console Tray Bracket MB3B-10723-F

£28.95

Free delivery: Aug 28

If paid before 14:00

Part no. 4M0035446

Audi A3 S3 8V Mobile Comunication Sygnal 2-Way Amplifier Compenser 4M0035446

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 03L906018GF

VW Scirocco Mk3 2.0 TDI 140HP CFHC Engine Control ECU Kit 03L906018GF Manual

£189.95

Free delivery: Aug 28

If paid before 14:00

Part no. A4478272100

Mercedes Vito W447 Open Source Software CD Licence Information A4478272100

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 4E0971142A

Audi A8 S8 D3 Door Window Lifter Wiring Cable Rear Left Right N/O/S 4E0971142A

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 0E02120368

Mercedes W205 Electrical Cable Wiring Loom Harness Cabling 0E02120368

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9865896

Mini F54 F60 Clubman Countryman KaFAS Camera Windscreen Front Unit 9865896

£132.95

Free delivery: Aug 28

If paid before 14:00

Part no. BJ32-14D617-AC

Land Rover Freelander 2 L359 Door Module Passenger Side Front BJ32-14D617-AC

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 4K0915254E

Audi A6 C8 2024 High Voltage Battery Switch Box Control Unit Module 4K0915254E

£332.95

Free delivery: Aug 28

If paid before 14:00

Part no. 9227560

BMW F10 F11 LCI Dashboard Central Information Display Screen 7" 9227560

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7649131-2

BMW F30 F31 320i N20 184HP ECU Control Unit Kit DME 7649131 Key FEM Manual

£360.95

Free delivery: Aug 28

If paid before 14:00

Part no. 1388277

BMW E39 E46 E60 E61 E83 E90 E91 Switch Glove Box Light

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8E0880201BK

Audi A4 B7 Steering Wheel Air Module Driver's Side 8E0880201BK

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 4G0907160B

Audi A7 4G Exhaust Gas Module Control Unit ECU 4G0907160B

£170.95

Free delivery: Aug 28

If paid before 14:00

Part no. 575035816

Seat Ibiza Mk5 Multimedia Radio CD Player Head Unit Controller 575035816

£180.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7P5907553AG

Porsche Cayenne 92A Suspension Control Module Unit ECU 7P5907553AG

£208.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 7L0971235

Volkswagen Touareg 7L Negative Battery Terminal Cable Wiring Loom 7L0971235

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8642652

BMW G30 Battery Negative Ground Cable Line Equi Potential Bonding LEB 8642652

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. RHD-7P6920981

Volkswagen Touareg 7P Instrument Cluster Speed Clocks Automatic Diesel 7P6920981

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. RHD-A2044402239

Mercedes W204 Battery Ground Cable Wiring Harness OM642 Diesel A2044402239

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7302410-1

BMW F32 F34 GT Lane Change LED Module Sensor Control Unit Right O/S 7302410

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8T0035225J

Audi A5 8T Antenna Aerial Amplifier Module Control Unit 8T0035225J

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 420035223C

Audi R8 42 Spyder Audio Amplifier System Unit Control Unit Module 420035223C

£351.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. CPLA-14F441-LD

Range Rover L405 BCM Module Body Control Unit ECU CPLA-14F441-LD

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 4L0910289K

Audi Q7 4L Body Control Comfort Unit Module BCM Unit ECU 4L0907289K

£170.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7210576-2

BMW F06 F12 Rear Lamp Tail Light Wiring Harness Plug Socket Right O/S 7210576

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8X0971030M

Audi A1 S1 8X 3D Door Wiring Harness Loom Cable Passenger Side 8X0971030J

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. A2319006307-1

Mercedes R231 Navigation CD Player Radio Stereo Sat Nav Head Unit A2319006307

£949.95

Free delivery: Aug 28

If paid before 14:00

Part no. 6929701

BMW 7 Series E65 E66 Alarm System Ultra Sonic Module 65756929701 6929701

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. A6401500734

Mercedes W169 W245 A200 B200 CDI OM640.941 140HP Engine Module ECU A6401500734

£94.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 8516739-3

Mini Cooper D R55 R56 LCI R60 N47N Engine ECU Kit DDE 8516739 CAS3 Key Automatic

£227.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 8E0971073

Audi A4 B6 B7 8E Water Coolant Radiator Temperature Sensor Loom Wiring 8E0971073

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8H0907357A

Audi S4 B8 Front Lamp Headlight Luminance Control Module Unit ECU 8H0907357A

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A234D0

Wiring Cable BMW F06 F12 F13 Electric Parking Hand Brake Handbrake Cable 5A234D0

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8514032

BMW X3 F25 X4 F26 Diesel B47 Alternator Starter Wiring Holder Cover 8514032

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8F0959655D

Audi A5 8F Air Module Control Unit ECU Crash Control 8F0959655D

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 8717954

BMW G05 G18 i4 G26 Fuse Relay Box Control Unit Power Distribution 8717954

£75.95

Free delivery: Aug 28

If paid before 14:00

Part no. A2215408335

Mercedes W221 Door Harness Left Right N/O/S Rear Door Wiring Loom A2215408335

£18.95

Free delivery: Aug 28

If paid before 14:00

Part no. A6519007500-16

Mercedes W204 C220 CDI 651.911 Engine Control Unit ECU A6519007500 Automatic

£37.95

Free delivery: Aug 28

If paid before 14:00

Part no. 1K0907719B

Audi A3 8P Anti Theft Alarm System Control Module Unit ECU 1K0907719B

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5QA919283H

Seat Arona KJ7 Park Parking Assist PDC Distance Control Unit Module 5QA919283H

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 5A207E7

BMW X3 G01 G20 G21 G30 G31 Audio Speaker Sound Amplifier Harman 5A207E7

£246.95

Free delivery: Sep 1 – 8

If paid before 14:00

Part no. 8512415-8

Mini Cooper D R55 R56 LCI N47N 112HP Diesel Engine ECU Kit DDE 8512415 CAS3 Key

£161.95

Free delivery: Aug 28

If paid before 14:00

Part no. 0411691

BMW Accessories Configurator Disc CD Version 1.1 0411691

£13.95

Free delivery: Aug 28

If paid before 14:00

Part no. 7639421-1

Mini Cooper S R60 N18 184HP Engine ECU Kit DME CAS3 + Key 7639421 Manual

£522.95

Free delivery: Aug 28

If paid before 14:00

...

Showing 10396-10494 of 27719 products