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 Rs Q3 8U Front Door Wiring Loom Cable Harness Driver's Side 8U0971029AJ

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04C907309AE-1

Audi A1 8X 1.0 TFSI CHZB 95HP Engine Control ECU Kit BCM + 2 Key 04C907309AE

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0061514401

Starter Motor Mercedes W204 W211 W212 OM642 Diesel Engine A0061514401

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959435C

Audi A3 8V VW Golf Mk7 Kessy Module Keyless Go Entry Control Unit 5Q0959435C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9278358

BMW F20 F21 F22 F87 Windscreen Camera Front Window KaFAS Camera 9278358

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9153135

BMW F01 F02 F03 Holder Bracket Control Unit Amplifier 9153135

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06L903024H

Audi A4 B9 A5 F5 Alternator Generator 14V 150A 2.0 TFSI CVKB 06L903024H

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9393701

Mini Clubman F54 Aerial Antenna Amplifier Booster Control Module Unit 9393701

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-15G590-AB

Range Rover L405 Wiper Motor Control Unit Module CPLA-15G590-AB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8978005051

Toyota Avensis T270 Transponder Immobiliser Control Unit Module 89780-05051

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049009907-1

Mercedes W204 Navigation Radio Player Head Unit Computer A2049009907

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0971693C

Audi A6 C7 4G Rear Door Harness Wiring Loom Cable Left Right N/O/S 4E0971693C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059002211-1

Mercedes C205 Dashboard Central Multimedia Car System Display Screen A2059002211

€42.95

Free delivery: Nov 12 – 13

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Part no. LJA1970AC

Jaguar Xk8 X100 Suspension Control Unit Module Adaptive Damping LJA1970AC

€42.95

Free delivery: Nov 12 – 13

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Part no. GX73-14A067-AA

Jaguar XF X260 XE X760 Fuse Box Relay Control Unit GX73-14A067-AA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8A61-13W030-DG-2

Ford Fiesta Mk7 Headlight Headlamp Light Lamp Wiring Left N/S BA6T-14K012-BTB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2466280041

Mercedes-Benz A B Class W176 W246 Battery Holder Mount Bracket A2466280041

€23.95

Free delivery: Nov 12 – 13

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Part no. 5Q0971230FS

Skoda Superb V3 Audi A3 8V Alternator Wiring Harness Loom 5Q0971230FS

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9350332

Head Unit BMW F30 F31 F32 X3 F25 Navigation Sat Nav Basic Media Player 9350332

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7443142060

Toyota RAV4 Mk2 Battery Tray Holder Support 2.0 Petrol 1AZFE 7443142060

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9436288

BMW G20 G21 Door Wiring Loom Harness Cable Rear Left N/S 9436288 9436287

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5E0035773

Skoda Superb 3V Audi A4 S4 8W Aerial Antenna Amplifier Module Unit 5E0035773

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2128201789

Mercedes W212 Antenna Amplifier Aerial Module C Pillar Left N/S A2128201789

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A18364

BMW F40 Heater Air Conditioning System Control Unit Module ECU 5A18364

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A1D0B1

BMW F70 U06 Comfort Access Antenna Keyless Entry Interior Aerial Module 5A1D0B1

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. NNN500411

Range Rover Sport L320 4.2 V8 390HP Engine Control ECU NNN500411 Automatic

€142.95

Free delivery: Nov 12 – 13

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Part no. KV6T10C679BC

Ford Transit Connect Battery Cable Negative Lead Terminal Harness KV6T10C679BC

€28.95

Free delivery: Nov 12 – 13

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Part no. 82G971036A

Audi A1 GB Mk2 Door Wiring Loom Harness Cable Front Passenger Side 82G971036A

€28.95

Free delivery: Nov 12 – 13

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Part no. A2218101817

Mercedes-Benz W221 Rear Left Right N/O/S Headlining Interior Mirror A2218101817

€23.95

Free delivery: Nov 12 – 13

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Part no. DG9T-14A597-BC

Ford Mondeo Mk5 Dashboard Sun Solar Sensor Unit DG9T-14A597-BC

€23.95

Free delivery: Nov 12 – 13

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Part no. 3D0907539A

VW Volkswagen Phaeton 3D Dashboard Light Sun Solar Sensor Unit 3D0907539A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3R0971687

Seat Exeo 3R Rear Door Wiring Harness Cable Loom Left Right N/O/S 3R0971687

€23.95

Free delivery: Nov 12 – 13

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Part no. 6938218

BMW 3 Series E90 E91 M3 Wiring Loom Front Door Left Passenger Side 6938218

€23.95

Free delivery: Nov 12 – 13

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Part no. CV6T-F221050-AB

Ford Kuga Mk2 Front Windscreen Washer Wiring Harness Cable CV6T-F221050-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. A2059000524

Mercedes W207 W212 Telematics Services Communication Module A2059000524

€23.95

Free delivery: Nov 12 – 13

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Part no. 31327066

Starter Motor Volvo S40 V70 XC90 Diesel Engine Actuator Motor 31327066

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1ET-18K811-BD

Ford Focus Mk3 C-Max Radio Multifunction Display Control Panel F1ET-18K811-BD

€32.95

Free delivery: Nov 12 – 13

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Part no. 6C1T14A067E

Ford Transit Mk7 Fuse Box Battery Terminal Unit Module 6C1T-14A067-E

€23.95

Free delivery: Nov 12 – 13

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Part no. DS7T-14F239-CJ-1

Ford Mondeo Mk5 Sat Nav Display Screen Multimedia Navigation Unit DS7T-14F239-CJ

€23.95

Free delivery: Nov 12 – 13

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Part no. A2315407410

Mercedes R231 AMG Front Brake Lining Harness Wiring Cable Right O/S A2315407410

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005459712

Mercedes W447 OM654 Power Distributor Box Conectors Socket A0005459712

€23.95

Free delivery: Nov 12 – 13

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Part no. 5A07858

BMW G01 G11 G12 G30 G31 F98 X4M Air Conditioning Control Unit Module 5A07858

€42.95

Free delivery: Nov 12 – 13

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Part no. A2079001200

Door Module Mercedes C207 W207 Front Right O/S Control Unit ECU A2079001200

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2535403113

Mercedes GLC X253 C253 Electric Wire Harness Loom Cable Connector A2535403113

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A4FEA0

BMW F74 Gran Coupé Manual Transmission Gearbox TCU Module B38N 7HDT400M 5A4FEA0

€303.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1648208026

Mercedes X164 W251 Air Unit Control Sensor Trigger Device ECU A1648208026

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LNC6242AC

Jaguar XK8 X100 Boot Trunk Lid Microswitch Trunk Lid Open Warning LNC6242AC

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8572418-2

BMW X3 F25 Diesel 2.0dX 184HP N47N Engine ECU Kit DDE 8572418 Key CAS4 Automatic

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0057186Q

Audi TT 8J Radio Head Unit CD Audio Player Control Unit 8J0035186Q

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7953075

BMW F70 F74 X1 U11 X2 U10 Mini F65 F66 Battery Alternator Starter Cable 7953075

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0971228

Skoda Superb 3V Positive Battery Wiring Cable Terminal 5Q0971228

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H22-14D374-AC

Land Rover Range Rover Sport L320 Air Module Ecu 8H22-14D374-AC NNW510230

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8512047-7

BMW E90 E91 LCI N47N 320d 163HP ECU Module KIT DDE 8512047 Manual

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 077450-1100

Land Range Rover Sport L320 Sun Sensor Control Unit 077450-1100

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9T-14K131-DB

Range Rover Evoque L538 Fuse Relay Box Module 2.2 Diesel 6G9T-14K131-DB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1665460143

Mercedes ML W166 Fuse Box Electric Distribution Control Module A1665460143

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6401500100

Mercedes W169 A160 CDI OM640.942 82HP Engine Control ECU A6401500100 Automatic

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8691842

Mini Cooper S F57 192HP Engine Control Unit ECU B48 Petrol Engine 8691842 Manual

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005428418

Mercedes A B C Class W169 W203 W245 Outside Air Temperature Sensor A0005428418

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139003022

Door Module Mercedes W205 W213 X253 Rear Right Door Control Unit A2139003022

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 82C971030G

Audi A1 GB Sportback Front Door Wiring Loom Harness Passenger Side 82C971030G

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9175883

BMW E60 E60 LCI E61 E61 LCI Front Door Wire Harness Loom Passenger Side 9175883

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129000204

Mercedes W212 Fuse Box Control Unit SAM Module Relay A2129000204

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229002109

Mercedes W205 W222 Door Module Control Unit Rear Right O/S A2229002109

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2240952

BMW E60 E61 MINI R50 Rear Bumper PDC Ultrasonic Sensor Hyper Blue

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8S0035466

Audi TT FV 8S Premium Loudspeaker System Amplifier Bang & Olufsen 8S0035466

€1,329.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8602994

BMW 1 X1 X2 Series F39 F40 F48 Mini Cooper One F55 F56 Earth Cable Wire 8602994

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519009002-1

Mercedes W212 E300 BlueTEC Hybrid Engine ECU Kit 204HP A6519009002 Manual

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9263790

BMW X6 E71 Footwell Light Xenon Control Module Unit LEAR FRM3R XE 9263790

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9262361

BMW E60 E81 E87 E90 E91 E92 E93 CAS3 Control Unit Key Reading Module 9262361

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519000601-6

Mercedes W906 313 CDI 651.955 129HP Engine ECU Key Lock Kit Manual A6519000601

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907063AG

Audi A4 B8 Onboard Supply Control Unit Comfort 8K0907063AG

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2829003300

Mercedes W177 A200 163HP M282.914 Engine Control Unit ECU A2829003300 Automatic

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-9D370-AF

Land Rover Discovery Sport L550 Diesel Fuel Pump Module FK72-9D370-AF

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0959795N

Audi A4 B8 Rear Door Control Module Unit Left Right N/O/S 8T0959795N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1765401707

Mercedes W176 Interior Roof Cable Ceiling Beam Wiring Loom A1765401707

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJE2850AA

Jaguar Xk8 X100 Mega Fuse Box Protection Module Shield Cover LJE2850AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5971162FT

Porsche Cayenne 92A Front Door Wiring Harness Loom Driver's Side 7P5971162FT

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06F906056S

Audi A3 8P Engine Control Unit ECU Module 2.0 Petrol 150HP Manual 06F906056S Kit

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H32-14632-AA

Range Rover L320 Door Wiring Loom Harness Cable Rear Right O/S 5H32-14632-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0919283G

Seat Ateca Skoda Fabia Mk4 Superb Mk3 Parking Distance Control Module 5Q0919283G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0945093H-1

Audi Q3 8U Rear Tail Light Lamp Wiring Cable Inner Left N/S LED 8U0945093H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8959795J

Audi A7 4G8 Rear Door Module Control Module Unit Left Right N/O/S 4G8959795J

€23.95

Free delivery: Nov 12 – 13

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Part no. 9343304

BMW X5 F15 X4 F26 Antenna Aerial Diversity Trap Circuit Control Module 9343304

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9221863

BMW X5 X6 E70 E71 Front Seat Control Module Unit Left Right N/O/S 9221863

€89.95

Free delivery: Nov 12 – 13

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Part no. 3V0919605E

Skoda Superb 3V Multimedia Touchscreen Multimedia Navigation Display 3V0919605E

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DG9T-14297-CE

Ford Mondeo Mk5 Front Screen Heated Jet Wire Harness Cable Loom DG9T-14297-CE

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8519663-19

Mini Cooper D R55 R56 R60 N47N 112HP Diesel Engine ECU DDE 8519663 Automatic

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2518206510

Mercedes W212 Light Sensor Sunlight Sensor Front A2518206510

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1665400180

Mercedes W166 Fuse Box Relay Cover Shield Cap Trim A1665400180

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059002314

Mercedes W205 Front Sam Comfort Control Module Unit A2059002314

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055409127

Mercedes C205 Rear Axle Wiring Harness Cable Loom Left N/S A2055409127

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8699946-3

Mini Cooper F56 B38 136HP Engine Control ECU Kit DME 8699949 Automatic

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8779030

BMW G30 G31 Body Control Comfort Module Unit FEM ECU V05 8779030

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0045468540

Mercedes W221 Distributor Box Block Control Unit Relay A0045468540

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669005605

Door Module Mercedes W176 W246 Front Left N/S Control Unit VST A1669005605

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129066701-1

Mercedes W212 Saloon Rear Tail Lamp Light Wiring Cable Right O/S A2129066701

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229001909

Mercedes W205 W222 Door Module Front Right O/S Control Unit ECU A2229001909

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. G2GT-14A075-AA

Ford Mondeo Mk5 Body Control Module Fuse Box Cover Lid G2GT-14A075-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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