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 F21 F22 F23 Wiring Loom Harness Passenger Side 9287441

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7P6035730B

VW Volkswagen Passat B7 Caddy 2C Bluetooth Control Module Unit ECU 7P6035730B

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2229001306

Mercedes W910 Gearbox Module Transmission Basic Control Unit A2229001306

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5K0937086AA-1

VW Volkswagen Caddy 2k Body Control Module BCM 2.0 TDi Automatic 5K0937086AA

€170.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V0919129

Volkswagen Golf R Mk7 A3 8V TV Tuner Control Unit Module ECU 8V0919129

€104.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BM2T-14B321-AC

Ford S-Max Mk1 Air Module Control Module Unit ECU BM2T-14B321-AC

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2H0911023K

Volkswagen Crafter 35 Starter Motor 2.0 TDI Bosch 2H0911023K

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9262215

BMW F01 Front Bumper Parking Sensor PDC Wiring Loom Harness Cable 9262215

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2479002307

Mercedes W177 W247 4Matic Transfer Control Unit Module ECU A2479002307

€137.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A4535406211

Smart A453 Wiring Loom Harnes Cable A4535406211

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2465405933

Battery Cable Mercedes W176 W246 Terminal Starter Wiring Harness A2465405933

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03L906018JG-2

Audi A5 8F Engine Control Unit ECU 2.0 TDI CGLC 177HP Manual 03L906018JG

€127.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6911584

BMW E65 E66 Steering Wheel MFL Phone Switch Buttons Left N/S 6911584

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9160558

BMW 5 Series E60 E60N E61 E61N LCI Airbag ECU Control Unit Module

€23.95

Free delivery: Sep 15 – 16

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Part no. L1TT14F642AK

Ford Puma St Cf7 Connector Socket Port Smart Data Link Module L1TT-14F642-AK

€23.95

Free delivery: Sep 15 – 16

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Part no. CV6T-15K857-MED

Ford Kuga C520 Centre Console Wiring Loom Harness Cable CV6T-15K857-MED

€23.95

Free delivery: Sep 15 – 16

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Part no. 4F1971845A

Audi R8 42 Fuse Box Electrical Connector Relay Control Unit Module 4F1971845A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. CK52-14301-BC

Range Rover L405 Negative Battery Terminal Cable Lead Wiring CK52-14301-BC

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4E0907279S

Audi A8 4E S8 D3 Comfort Module Electric Steering Column Unit 4E0907279S

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2049002013

W204 Mercedes Sat Nav CD Player Radio Stereo Head Unit A2049002013 W204

€99.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4K8971036F

Audi A6 C8 Door Card Wiring Loom Harness Cable Front Passenger Side 4K8971036F

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 83A945092-2

Audi Q3 F3 LED Tail Light Rear Right O/S Plug Wire Cable Connector 83A945092

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0419065D

Audi A4 B9 A5 F5 Power Steering Column Control Unit Module 8W0419065D

€47.95

Free delivery: Sep 14 – 16

If paid before 14:00

Part no. 9117801

Battery Bracket BMW X3 G01 X4 G02 Rear Holder Mount Carrier Support 9117801

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V0857273F

Audi A3 8V Display Screen Sat Nav Navigation Dashboard 8V0857273F

€108.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9387561

Head Unit BMW I3 I8 Mini F56 Navigation Sat Nav DAB High Control Module 9387561

€227.95

Free delivery: Sep 15 – 16

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Part no. 9312764-1

BMW F10 LCI Body Control Module ECU Junction Box PL6 JBBFE III V2 9312764

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03L906022FL-1

Audi A6 C6 2.0 TDI 233HP CAGB Engine Control ECU Kit 03L906022FL Key + Lock

€180.95

Free delivery: Sep 15 – 16

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Part no. A6549001300-1

Mercedes W213 C238 Glow Plug Relay Diesel OM654 Preglow Module A6549001300

€32.95

Free delivery: Sep 15 – 16

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Part no. A2711504979-1

Mercedes W204 156HP Engine Control Unit ECU KIT SET Petrol Automatic A2711504979

€560.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YMD001991

Range Rover L322 Parking Sensor PDC Wiring Harness Cable YMD001991

€28.95

Free delivery: Sep 15 – 16

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Part no. 1439740

BMW X5 E53 Cable Starter-Base B Electrical Cable Wiring 3.0i M54 Petrol 1439740

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0971765F

Audi A4 B8 A5 8T AdBlue Additive Fuel Tank Wiring Loom 2.0 TDI 8K0971765F

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. LPLA-10C307-AD

Range Rover Sport L494 Starter Motor Cable Wire Loom 3.0 Diesel LPLA-10C307-AD

€32.95

Free delivery: Sep 15 – 16

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Part no. 03L903023

Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2465406432

Battery Cable Mercedes W176 W246 Negative Lead Wiring Harness A2465406432

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8T2035110A

Audi A5 8T Radio Head Unit Navi CD DVD Player Changer 8T2035110A

€32.95

Free delivery: Sep 15 – 16

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Part no. A2124405833

Door Wiring Mercedes W212 Loom Cable Rear Left Right N/O/S A2124405833

€23.95

Free delivery: Sep 15 – 16

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Part no. 6933267

BMW 7 Series E65 E66 E67 Control Unit Door Front Passenger Side 6933267

€23.95

Free delivery: Sep 15 – 16

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Part no. 4H0971365H

Audi A8 D4 Seat Wiring Harness Cable Seat Belt Warning System 4H0971365H

€23.95

Free delivery: Sep 15 – 16

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Part no. 7P5971073AB

Porsche Cayenne 92A VTS Vehicle Tracking System Wiring Loom Harness 7P5971073AB

€32.95

Free delivery: Sep 15 – 16

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Part no. 7P5971411A

Porsche Cayenne 92A Air Heater Flap Actuator Motor Wiring Cable 7P5971411A

€23.95

Free delivery: Sep 15 – 16

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Part no. 6850765

Mini F46 F45 F60 Braking Cable DSC Pulse Generator Sensor Wiring Front 6850765

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V0919813

VW Volkswagen Golf R Mk7 Toll Reader Device Module Chip Card Reader 8V0919813

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009056001

Battery Cable Mercedes W213 S213 Negative Lead Wiring Harness A0009056001

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F9035225AA

Audi A6 C6 Antenna Amplifier Control Unit Module 4F9035225AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 859800D060

Toyota Yaris XP10 Door Control Module Unit ECU 859800D060

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 51794731

Fiat Panda Mk2 Fuse Box Relay Cover Lid Cap Housing Under Bonnet 51794731

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1812480

Ford Focus Mk3 Seat Air Module Sensor Front Passenger Side BM51-A625B02-AC

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. CV1T-14B533-AG

Ford Fiesta Mk7 Front Door Module Control Unit ECU Passegner Side CV1T-14B533-AG

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AH2210300AB

Land Rover Range Sport L320 Diesel Engine Alternator Generator AH22-10300-AB

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AM51-10A659-BB

Ford Focus Mk3 Battery Cover Panel Trim Plastic Black AM51-10A659-BB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GJ32-14D619-BA

Land Rover Discovery Sport L550 Door Module Rear Passenger Side GJ32-14D619-BA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0035225N

Audi A8L 4H Antenna Aerial Amplifier 4H0035225N

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DG9T-14633-GCG

Ford Mondeo Mk5 Door Wiring Harness Loom Cable Rear Left N/S DG9T-14633-GCG

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6S6Y-14401-NDF

Ford Fiesta St Mk5 Fuse Box Relay Box Module 2.0 DURATEC ST150 6S6Y-14401-NDF

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HPLA-9137-BD

Land Rover Range Rover Sport L494 Steering Wheel Airbag Wiring Loom HPLA-9137-BD

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009060803

Alternator Mercedes W176 C117 X156 X117 Petrol Engine Generator A0009060803

€118.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8379766

BMW E65 E90 E91 E92 E93 Auto Boot Release Switch Tailgate 8379766

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DPLA-14F70-BB

Range Rover L405 L494 Power Distribution Control Unit Module DPLA-14F70-BB

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. M8E2-14D600-AC

Range Rover Velar L560 Front Seat Module ECU Left Right N/O/S M8E2-14D600-AC

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7PP035730B

Porsche Cayenne 92A Multimedia Music Navi CD Radio Player Head Unit 7PP035730B

€507.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6933270

BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver Side 6933270

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1765400103

Battery Cable Mercedes C117 W176 Starter Alternator Wiring Harness A1765400103

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0971366M

Audi A8 D4 Seat Frame Wiring Harness Front Left N/S 4H0971366M

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6942550

BMW E90 Front Seat Wire Cable Harness Wiring Loom 6942550

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9341546

BMW F40 G20 G30 Accelerating Sensor 9341546

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8720310

Telematics Module Mini F54 F55 F56 F60 Bluetooth Control Unit ECU 8720310

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BG9T-15K867-SC

Ford Mondeo Mk4 Front Bumper Parking Sensor Wiring Loom Harness BG9T-15K867-SC

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3C0919275S-BLK1

Audi TT 8J PDC Parking Assist Distance Sensor Control 3C0919275S Black

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GOLF-5K-SCREEN-3

VW Golf Mk5 Mk6 Passat B6 B7 Car Radio Display MMI Multimedia Touch Screen 7"

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1775402111

Mercedes W177 Door Harness Loom Cable Wiring Rear Left Right N/O/S A1775402111

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0959595G

Audi A4 B9 Rear Door Control Module Unit ECU Left Right N/O/S 8W0959595G

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BV6T-14E073-BAC

Ford Focus Mk3 Front Door Light Wiring Loom Harness Right O/S BV6T-14E073-BAC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6929556

BMW E65 E66 Driver's Seat Air Module Sensor Control Unit Module 6929556

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7790996

Mini One D R50 W17 Base B+ Battery Terminal Point Engine Compartment 7790996

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7789754

BMW E60 E61 Starter Motor Positive Battery Cable Wiring 7789754

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1768200704

Sunroof Wiring Mercedes C117 W176 Panoramic Motor Cable Harness A1768200704

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5G6867657

Volkswagen Golf 5G Mk7 Rear Lamp Light Bulb Cover Left N/S 5G6867657

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8T8971687S

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Left N/S 8T8971687S

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. CK52-14632-AE

Range Rover L405 Door Wiring Loom Harness Cable Rear Right O/S CK52-14632-AE

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. CPLA-19G490-AE

Range Rover L405 Camera Module Rear View Parking Camera Unit CPLA-19G490-AE

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8D0973822

Audi Q3 F3 Flat Connector Lid Lock Connector Micro Switch Wire Bonnet 8D0973822

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BK3T-14335-BB

Ford Transit MK8 Interior Reading Roof Light Wiring Cable Adapter BK3T-14335-BB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2139005628

Mercedes W205 W213 Ignition Central Lock Control Unit Module ECU A2139005628

€237.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0971250P

Audi S3 8V Battery Wire Cable Negative Earth Lead 95Q0971250P

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0907064CP

Body Control Module Audi A4 B8 A5 8T BCM Comfort Control Unit 8K0907064CP

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5A57781-1

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

€322.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06J971082B

Volkswagen Golf Gti 5k Jetta 1K Fuel Injector Wiring Loom Harness 06J971082B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6981142

Window Lifter Motor BMW E60 E61 Drive Actuator Front Right O/S 6981142

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9131734

BMW E81 E82 E88 E92 Passenger Seat Wiring Memory Loom Harness Cable 9131732

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9855635

BMW F70 F74 U06 X2 U10 X1 U11 Battery Tray Pad Support Holder 9855635

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2535407830

Mercedes C253 AMG Rear Bumper PDC Wiring Parking Sensor Loom Harness A2535407830

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1718701410

Mercedes SLK R171 Alarm Anti Theft System Control Module Unit Roof A1718701410

€94.95

Free delivery: Sep 15 – 16

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Part no. A0005405624

Fan Wiring Mercedes W639 W906 Heater Blower Unit Motor Cable Harness A0005405624

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055402750

Mercedes W205 C253 Hybrid Fuse Control Unit Module Distribution Box A2055402750

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9218261

Mini Clubman R55 Clubdoor Cable Wiring Loom Harness Set 9154133

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DT11-13C148-AC

Ford Transit Connect Headlight Control Unit Module ECU DT11-13C148-AC

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. K8D2-14A076-CA

Range Rover Evoque L551 Battery Fuse Box Cover Panel K8D2-14A076-CA

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

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