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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139068701

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Fuse Unit A2139068701

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959592D

Door Module Audi A3 8V VW Golf 7 Seat Leon 3 Front Right O/S 5Q0959592D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0910655Q

Audi A6 C6 4F Control Unit Air Module ECU Bosch 4F0959655G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9131780

BMW 3 Series E92 ECU Body Control Module Junction Box L1 PL2 JBBFE 9131780

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9079002407

Mercedes W907 Electronic Ignition Module Control Unit A9079002407

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7515253

Mini Cooper One R50 R52 R53 R55 R56 R57 R58 R59 R60 R61 Earth Ground Cable

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6900582

BMW 7 Series E65 E66 Fuse Board Power Distribution Box

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9345321

BMW F01 F02 Body Control Module Junction Box ECU 9345321

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9210861

BMW F10 F11 Power Distribution Fuse Box Front 9210861 61149210861

€23.95

Free delivery: Nov 12 – 13

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Part no. 9359799

BMW i3 I01 F10 F20 F30 LCI KaFAS Camera Speed Control ECU Module Unit 9359799

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6916058

Mini Cooper R50 R52 R53 Support Bracket Navigation Computer 6916058

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6809545

Mini F56 Interior Electrical Cable Excitement Package Wiring Harness 6809545

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0055421218

Crash Sensor Mercedes W176 W204 W212 Impact Air Unit Module Control A0055421218

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0907468F

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2755518

Mini R55 R56 R57 Battery Tray Holder Mounting Bracket Housing Box 2755518

€23.95

Free delivery: Nov 12 – 13

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Part no. 5M5T14B192EA

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO 5M5T14B192EA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9075406749

Mercedes W907 Battery Electrical Ground Line Wire Earth Cable A9075406749

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9380885

BMW 1 3 4 F20 F30 F32 Control Unit Air Conditioning A/C Module 9380885

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129001529

Mercedes-Benz C E Class W204 W207 W212 Front Left Door N/S Control Unit Module

€23.95

Free delivery: Nov 12 – 13

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Part no. BH42-14D617-AA

Land Rover 4 L319 Front Door Control Unit Module Passenger Side BH42-14D617-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959793A

Audi A5 8T Coupe Driver's Door Module Control Unit 8K0959793A

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. a2469004716

Radio CD Player Mercedes W176 W246 Audio Navigation Stereo Head Unit A2469004716

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8636064

Wiring Cable BMW F20 F30 LCI B48 Engine Injector Ignition Loom 8636064

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8506281

BMW E81 E87 E90 LCI 116d 316d 118d 318d N47 Engine ECU DDE 8506281 Manual

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009820112

Mercedes W177 W207 Power Energy Distribution Unit Module A0009820112

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009821923-1

Mercedes W205 Interior Trunk Fuse Box Automotive Pink Relays Set A0009821923

€23.95

Free delivery: Nov 12 – 13

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Part no. 4G8959107S

Audi A7 4G8 Sportback Electric Tailgate Bootlid Control Unit Module 4G8959107S

€23.95

Free delivery: Nov 12 – 13

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Part no. A2229063202-1

Fuse Box Mercedes W205 W222 Electrical Relay Box Module Unit A2229063202

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8606022

BMW F10 F11 523i N53 204HP Engine Control Unit ECU DME 7614366 Automatic

€759.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009001017

Mercedes S205 W205 Air Conditioning Control Module A/C ECU Unit A0009001017

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6962887

Air Module Sensor BMW Z4 E85 E64 B-Pillar Left N/S Crash Module ECU 6962887

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2198202526

Light Module Mercedes W209 W219 W164 Headlight Headlamp Control Unit A2198202526

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7627520

Mini R55 R56 LCI R60 One N16 1.6 98HP Engine ECU DME 7627520 Manual

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2189000104

Mercedes CLS X218 Parktronic PDC Parking Assist Control Module A2189000104

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959593F

Volkswagen Golf Mk8 Door Module Front Right O/S ECU Control Unit 5Q0959593F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V5T-14B192-AA

Ford Fiesta Mk7 Transit Relay 4-Pin FoMoCo Unit 8V5T-14B192-AA SET X3

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6861026

BMW I01 F45 F46 Mini F55 F56 Parking Assistant PDC Control Unit Module 6861026

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959592M

Audi A4 B9 A5 F5 Front Door Module Control Unit ECU Passenger Side 8W0959592M

€23.95

Free delivery: Nov 12 – 13

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Part no. 6935597

Parking Sensor BMW E81 E87 E90 E91 PDC Front Rear Titansilber Silver - 354

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6866990

Airbag Module BMW F01 F02 LCI F10 F11 F13 Air Bag ECU ICM Control Unit 6866990

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0390203255

Seat Adjustment Motor Mercedes W221 Front Seat Motor Actuator 0390203255

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0038201926

Mercedes W221 Door Crash Impact Sensor Rear Left Right N/O/S A0038201926

€23.95

Free delivery: Nov 12 – 13

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Part no. A2475400600

Mercedes W177 Rear Axle Wheel RPM Speed Right Sensor Wire Harness A2475400600

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8573260

BMW F20 F21 114d 116d Diesel N47N Engine Control Unit DDE 8573260 Manual

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779001304

Door Module Mercedes C118 W177 W247 Front Left N/S Control Unit A1779001304

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q4959393F

Skoda Octavia 5E Door Control Unit Module ECU Front Driver's Side 5Q4959393F

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1718204926

Mercedes SLK R171 Roadster Soft Top Folding Roof Control Module A1718204926

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469009112

Control Unit Mercedes W176 W246 Body Control Module BCM ECU A2469009112

€44.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6944499

BMW 5 6 Series E60 E61 E63 Passenger Side Door Airbag Control Module 6944499

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6878200

BMW F10 F20 F30 Rear M VDC Sport Suspension Control Unit Module 6878200

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5M0907357D

Seat Exeo 3R Headlight Range Control Unit Module ECU 5M0907357D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906022NP-1

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

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6964139

BMW 7 Series E65 E66 E67 Front Control Unit Door Passenger Side 6964139

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CADDY-SCREEN

Volkswagen VW Caddy 2K Android Car Radio System 7" Touchscreen

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8518269-6

BMW E90 E91 LCI N47N 320d 184HP ECU KIT DDE CAS 3 Key 8518269 Manual

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0971237A

Audi TT 8J Starter Motor Negative Battery Wiring Harness Cable 8J0971237A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0937401

Volkswagen Touareg 7P Power Distribution Unit Positive Battery Socket 7P0937401

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729060205-1

Mercedes SLK R172 Rear SAM Fuse Relay Box Control Unit Module A1729060205

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959595M

Audi A4 B9 A5 F5 Door Module Rear Right Left N/O/S Control Unit 8W0959595M

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6967184

BMW X5 X6 Series E70 E71 Positive Battery Cable Terminal Box Base B+ 6967184

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L907309AB

Audi Q3 8U 2.0 TDI DFUA 184HP Quattro Engine Control ECU 04L907309AB Automatic

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8631725-1

BMW F22 F30 F32 220i 320i 420i Petrol N20 184HP ECU Kit DME 8631725 + Key + FEM

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V1035035B

Audi A3 S3 Q2 RS3 Multimedia Navigation Card Reader Head Unit 8V1035035B

€560.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 057906051H-3

Audi RSQ3 F3 DPF Differential Pressure Sensor 2.5 TFSI 057906051H 83A131552G

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6956744

BMW 1 3 Series E81 E82 E87 E88 E90 E91 Ultrasonic Sensor PDC Sydney Blue 6956744

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9459673

Seat Module BMW X4 F26 F20 F30 Front Driver Side Control Unit ECU 7943747

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8691838-1

Mini F54 F55 F57 B48 136HP Petrol Engine Control ECU Kit DME 8674258 Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8606306

BMW F10 F11 F30 184 HP Petrol N20 Engine Control Unit ECU DME 8606306 Manual

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H2GT-14C676-AA

Ford Mondeo Mk5 Front Door Crash Impact Sensor Left Right N/O/S H2GT-14C676-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479009412

Bluetooth Module Mercedes W247 W447 Multimedia Control Unit ECU A2479009412

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2078201989

Mercedes-Benz W207 A207 Radio Aerial Antenna Amplifier Module Unit A2078201989

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9315151

BMW X3 F25 Fuse Box Power Distribution Control Unit Box Rear 9315151

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7290719

BMW F40 F54 Cover Battery Vehicle Trim 7290719

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8XA971679C

Audi A1 8X Dashboard Glove Box Wiring Loom Cable Storage Harness 8XA971679C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669008009

Mercedes GLE W166 Rear Door Wiring Control Module Right O/S Unit ECU A1669008009

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6968652

BMW 3 Series E93 E93N LCI Aerial Antenna AM / FM Right O/S 6968652

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469003114

Transmission Module Mercedes W176 W246 Control Unit ECU A2469003114

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425C-1

Audi Q3 8U 2.0 TFSI CULB 180HP Quattro Engine ECU Kit 06K907425C Ignition + Key

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8625068-2

Mini One R56 LCI R58 N16 1.6 98HP Engine ECU Kit DME 8625068 CAS 3 + Key Manual

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9291701

BMW F10 F11 LCI Front Seat Left N/S Wire Harness Loom Cable 9291701

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6969011

BMW E60 E63 E64 Body Control Module ECU Control Unit 6969011

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0035223

Audi A5 8T Audio Amplifier Sound Booster Control Unit Module 8T0035223

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14D620-AC

Land Rover Freelander 2 L359 Rear Door Control Unit Module BJ32-14D620-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8639595

BMW F30 F31 F32 320i 420i N20 ECU Engine Control Unit DME 8639595 Automatic

€322.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6960381

BMW 5 Series E60 E61 Airbag ECU Control Unit Gateway Module 6960381

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7525822

BMW E90 E92 E93 Driveshaft Output Drive Shaft Right O/S Petrol 7525822

€23.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 6860729

VDC Module BMW F31 Touring Air Suspension Level Control Unit 6860729

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8635815

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6990089-1

BMW 6 X3 Series E63 E83 Radio Antenna Amplifier Suppression Filter

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0907335

Audi Q7 4L Quattro S Line Keyless Entry Antenna Control Module 4L0907335

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6946106

BMW 7 E65 E66 Passenger Seat Airbag Sensor Control Unit Module 6946106 6970899

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7837775

BMW 3 Series E90 E92 E93 M3 S65 Starter Motor Petrol 7837775

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HK72-13444-AA

Land Rover Discovery Sport L550 Rear Tailgate Boot Wiring Loom HK72-13444-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9299335

BMW F01 F02 F07 F10 F11 CAS4 Control Unit Key Reading Module 9299335

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468K

Gateway Interface Audi A5 8T A4 B8 Control Unit Module ECU 8T0907468K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2751265-7

Cable Wiring Mini R55 R56 Headlight Lamp Front Left N/S Plug Socket 6913653

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6394409909

Wiring Loom Mercedes W639 Vito Cable Sliding Door Rear Left N/S A6394409909

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1679001320

Ignition Module Mercedes V177 Electronic Ignition Switch Keyless Control Unit

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

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