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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Audi A1 8X Front Door Loom Wiring Harness Cable Driver's Side O/S 8X0971035BE

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059005713

Door Module Mercedes W205 Front Left N/S Door Control Module Unit A2059005713

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7810863

Battery Cable BMW X3 F25 Wire Lead Positive Alternator Starter B+ 7810863

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A4475406777

Alternator Wire Mercedes Vito W447 Battery Alternator Cable A4475406777

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2198353

Ford Fiesta Mk8 Starter Motor Engine Actuator 1.5 ST EcoBoost JX6T-11000-CA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR069740

Range Rover Evoque L538 Rear Tailgate Camera Unit Bracket Panel LR069740

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. YTA000100

Range Rover L322 Positive Plus + Battery Alternator Cable Lead 4.4 7514551

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8E1971035CQ

Audi A4 B7 Front Door Cables Wiring Loom Passenger's Side 8E1971035CQ

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03G906056S-3

Audi A3 8P 1.9 TDI BLS 105HP Engine Control ECU Kit BCM + Key 03G906056S Manual

€218.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03G906021LG-1

Audi A3 8P 2.0 TDI BKD 140HP Engine Control Unit ECU Kit 03G906021LG Manual

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8689722-2

BMW F32 Engine ECU Control Unit 184 HP 420iX B48 2.0 Petrol B48 8689722 KIT

€550.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8835156

BMW U06 X1 U11 High-Voltage Battery Radiator Cooler Line Hose Tube Pipe 8835156

€560.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8P0837220D-2

Audi A3 S3 8P Flip Key Fob Remote Control Button Lock Cylinder 8P0837220D SET

€70.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6947216

BMW 3 Series E93 Convertible Rear Bumper FM Radio Aerial Antenna 6947216

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9131850

CD Changer BMW E60 E61 E63 6-DISC Compact without Magazine 9131850

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1645400074

Mercedes W164 W251 Front Seat Wiring Loom Harness Left N/S A1645400074

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0907539

Audi A5 S5 8T Dashboard Sunlight Solar Sun Sensor 8K0907539

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3Q0907338P

Audi Q2 GA Headlight Light Headlamp Lamp Control Module Unit ECU 3Q0907338P

€104.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2479002613

Mercedes CLA C118 W177 W205 W213 Telematics Control Unit Module A2479002613

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 95B035736A

Porsche Macan 95B USB SD SIM Card Module Multimedia Reader Port 95B035736A

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0035421619

Mercedes W177 Relay 052 Engine Fuse Box Relay Slot B D E 70A Tyco A0035421619

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7928461

BMW G11 G12 G29 G31 G38 Radio Remote Control Receiver Module Unit 7928461

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8621490

Alternator Cable BMW F21 F22 F30 LCI 125i 220i 228i 320i N20 Starter 8621490

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6397600704

Mercedes Vito W639 Front Left Door N/S Lock Bowden Pull Cable A6397600704

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1715405045-1

Mercedes SLK R171 Central Gateway Module ECU Control Unit A1715405045

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0131541702

Alternator Mercedes W638 OM611 Engine Alternator Generator A0131541702

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2078200075

Antenna Mercedes W212 Keyless Go Comfort Access Antenna Module Unit A2078200075

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V3971036

Audi A3 S3 8V Front Door Card Wiring Harness Passenger Side 8V3971036

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1729003406

Mercedes SLK R172 Roadster Soft Top Folding Roof Control Module A1729003406

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9483099

Mini Cooper One F55 F56 F57 Parking Assistant Control Unit Module 9483099

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P5971693F

Porsche Cayenne 92A Wiring Loom Harness Cable 7P5971693F

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7856771

Injection Wiring BMW F90 M5 F91 M8 S63M Cyl. 1-4 Loom Valve Ignition 7856771

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A656B3

BMW G20 Air Module Control Unit SRS ECU 5A656B3

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0971250AM

Volkswagen VW Scirocco Mk3 Negative Battery Terminal Cable Wiring 1K0971250AM

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009052500

Mercedes W212 ESP Yaw Rate Speed Sensor Control Unit A0009052500

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9309990

Mini F57 Cabrio Antenna Aerial Amplifier AM / FM Rear Unit Module FM2 9309990

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0015424423

Parktronic Screen Mercedes W207 W212 Front Parking Sensor Display A0015424423

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6Y6945111C-1

Skoda Fabia MK1 6Y Rear Tail Light Lamp Wiring Harness Cable Left N/S 6Y6945111C

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 0AD927755L

Volkswagen Touareg 7L Transfer Box Control Unit Module ECU Automatic 0AD927755L

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BK3V-14517-CE

Ford Transit Mk8 Fuse Relay Box Control Unit Module BK3V14517CE

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2038700426

Door Module Mercedes CL203 Front Right O/S Control Unit A2038700426

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. YTA000010

Range Rover L322 Positive Plus + Starter Wiring Harness Cable 4.4 1H4Z-14N144-EA

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LK62-9D370-BC

Range Rover Velar L560 Fuel Pump Control Module ECU 2.0 Diesel LK62-9D370-BC

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7369120-2

BMW F30 F31 LCI Plug Socket Rear Right O/S Light Trunk Lid Boot Wiring 6984754

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3AA907273B

Volkswagen Passat B7 Tyre Pressure Control Module TPMS 3AA907273B

€184.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8368231

BMW E46 Door Speaker Tweeter Front Left N/S 8368231

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9181454

BMW X1 E84 Aerial Antenna Noise Suppression Filter 9181454

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1664409735

Mercedes ML W166 Battery Cable Alternator Starter Motor Wiring A1664409735

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AV1T-14A584-HCD

Ford B-Max Mk1 Door Loom Wiring Harness Cable AV1T-14A584-HCD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 06J903023G

VW Volkswagen Polo GTI 6R Golf Mk7 Alternator Generator 14V 140A 6J903023G

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9343259

B+ Distribution Box BMW X3 F25 Battery Power Red Rear Control Unit 9206140

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 281480007R

Smart A453 Renault Trafic MK3 Front Dashboard Tweeter Speaker 281480007R

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K5945095AA-1

Audi A4 B8 Saloon Rear Lamp Tail Light Wiring Harness Plug Left N/S 8K0973706

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8506373-1

BMW X3 E83 LCI 1.8d N47 Engine Control Unit ECU Kit Module DDE 8506373 EWS Key

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A4475402231

Mercedes W447 Sliding Door Wiring Loom Harness Right O/S A4475402231

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4K0971237

Audi A6 C8 A7 4G Engine Earth Line Ground Wiring Harness Cable 4K0971237

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4K9035225B

Audi A6 C8 Antenna Aerial Amplifier AMP 4K9035225B

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1668201089

Mercedes W176 Radio Aerial Antenna Amplifier Booster Unit Module A1668201089

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6842253

BMW F48 F45 Mini F55 Front Air Module Control Unit ECU 6842253

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A9075406749

Mercedes W907 Battery Electrical Ground Line Wire Earth Cable A9075406749

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6842527

BMW G20 Battery Terminal Voltage Distribution Box 400W MID 6842527

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7382536-2

Mini Countryman F60 Cooper SE ALL4 Charging Socket Trim Hybrid Charger 7382536

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8P0035195G

Audi A3 8P Radio Multimedia Player CD Head Unit 8P0035195G

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G1919129

Audi A1 8X A4 B8 A6 C7 A7 4G TV Tuner Module Control Unit 4G1919129

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CH22-15K801-BB

Range Rover Sport L320 5 Button Smart Key Fob CH22-15K801-BB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9240490

Battery Distribution Box BMW F01 F02 F10 F11 Power B+ Rear 9240490

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0937125D

Audi A3 8P Engine Bay Fuse Box 1K0937125D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9317866

BMW 3 Series F30 330e Hybrid Battery Accumulator Bracket Holder Mount 9317866

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8X0915181

Audi A4 B8 A5 8T TT Mk2 Negative Battery Terminal Cable Lead 8X0915181

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0907064DD

Audi A4 B8 A5 8T Body Control Module BCM Comfort Control Unit 8K0907064DD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6989713

BMW 1 3 Z4 Series E88 E89 E93 Convertible Cabrio DWA-Alarm System Module 6989713

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5NA971693K

Volkswagen Tiguan Mk2 Door Wiring Loom Harness Rear Left N/S 5NA971693K

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0959392B

Audi A3 S3 8V Door Control Module Front Passenger Side Left N/S 5Q0959392B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2189006806

Mercedes W207 Harman Control Unit Module Amplifier Premium Sound A2189006806

€631.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1Q0971121P

Volkswagen Eos 1F Front Door Wiring Loom Harness Cable Passenger Side 1Q0971121P

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6429002900-11

Mercedes W164 ML300 OM642.820 204HP Engine Control ECU Kit A6429002900 Automatic

€332.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9137703

Mini Cooper One R55 R56 Door Wiring Harness Factory Right O/S 9137703

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02M911023M

Volkswagen VW Golf Mk5 1.6 2.0 GTI Petrol Engine Starter Motor 02M911023M

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V4945070-2

Audi A3 8V Rear Tail Light Lamp Outer Side Right O/S Harness Wire 8V4945070

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9284442

BMW F20 F30 Mini F56 Air Conditioning Module Control Unit 9284442

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V5035225

Audi A3 8V Keyless Entry Amplifier Control Box Module Aerial Antenna 8V5035225

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9213373

Mini Cooper R57 Convertible Cabrio Petrol Fuse Box 9213373

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8Y0963554A

Audi S3 8Y Rear Seat Couch Occupancy Recognition Sensor Unit 8Y0963554A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2045409907

Mercedes W204 Battery Wiring Cable Harness Loom A2045409907

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2229009910

Mercedes W205 W213 C238 Seat Heating Heater Module Control Unit ECU A2229009910

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009001017

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

€33.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. W164-JUNSUN

Mercedes W164 X164 Junsun Car Radio 10.1"Android CarPlay 32GB XT8191CX-F

€170.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 059907309AC-1

Audi Q7 4M 3.0 TDI DPXA 286HP Quattro Engine Control ECU 059907309AC Automatic

€550.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2045455640

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6879833

Air Module BMW F20 F21 F22 F30 F31 ECU ICM Control Unit ECU 6879833

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0971230KE

Volkswagen VW Caddy 2K Alternator Wiring Loom Harness 1.9 TDI 1K0971230KE

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7H22-1560-AB

Land Rover Sport L320 Tyre Pressure Control Unit TPMS 7H22-1560-AB

€165.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L911021G

Audi A4 B8 A5 8T A6 C7 Starter Motor Actuator Bosch Diesel Engine 03L911021G

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9276036

BMW 5 Series F11 Touring Antenna Aeral Amplifier Diversity 868 MHZ 9276036

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4K0907347B

Audi A6 C8 Mild Hybrid Power Distribution Mount Bracket Support 4K0907347B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2465410005

Mercedes W176 W246 Battery Cover Fuse Box Trim Panel Lid A2465410005

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9387164

BMW X3 F25 Front Lamp Headlight Control Module Unit ECU 9387164

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6988965

BMW E81 E87 E90 LCI PDC Parking Ultrasonic Sensor Spacegrau 6988965

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9284331-1

Mini R55 R56 R60 R61 Roof Operating Unit Light Switch 3455632

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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