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 A4 B8 Body Control Comfort Unit Module BCM Convenience Unit 8K0907063AD

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Audi A4 RS4 B7 Steering Column Control Module Unit 8E0953549T

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Free delivery: Nov 12 – 13

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Audi S5 F5 Earth Line Voltage Converter Starter Alternator Harness 8W0971534

€23.95

Free delivery: Nov 12 – 13

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Roof Antenna Mercedes W212 Shark Trim Panel Iridium Silver - 775 A2128270128

€23.95

Free delivery: Nov 12 – 13

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Part no. 3C0951171C

Volkswagen Passat B7 Golf Mk6 Roof Alarm Sensor Module 3C0951171C

€23.95

Free delivery: Nov 12 – 13

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Part no. K8D2-14A067-CA

Land Rover Discovery Sport L550 Fuse Box Fusebox Bracket Mount K8D2-14A067-CA

€23.95

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BMW 259 259R 259 R22 Connection Plug Relay Pink Tyco 8366625

€23.95

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Part no. 7G9T-14B533-KC

Land Rover Freelander 2 L359 Door Control Unit ECU Front Left N/S 7G9T-14B533-KC

€32.95

Free delivery: Nov 12 – 13

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Part no. 9315150

BMW X3 F25 Front Distribution Box Fuse Box Power Control Unit 9315150

€23.95

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Part no. A2038301613

Mercedes C CLK Class W203 C209 Engine Bay Fuse Box Right O/S Cover A2038301613

€23.95

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Part no. A2229004619

Mercedes W205 W213 C238 Bluetooth Hermes LTE Control Unit Module A2229004619

€113.95

Free delivery: Nov 12 – 13

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Part no. 7P6907530J

VW Volkswagen Touareg 7P MK2 Gateway Control Unit Module ECU 7P6907530J

€28.95

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Part no. 9207008

Mini R55 R56 LCI R57 Door Wire Cable Harness Wiring Loom Passenger Side 9207008

€56.95

Free delivery: Nov 12 – 13

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Part no. 8844294

BMW X1 U11 High-Voltage Battery Module Connector 8844294

€132.95

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Part no. 46863927

Vauxhall Movano C Parking Distance Control PDC Unit Module 46863927

€47.95

Free delivery: Nov 12 – 13

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Part no. 03C906024CD

Seat Ibiza 6j Mk4 1.4 CGGB 85HP Engine Control Unit ECU 03C906024CD Manual

€28.95

Free delivery: Nov 12 – 13

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Part no. 3AA906507A

VW Volkswagen Passat CC Engine Control Unit ECU Bracket Holder Tray 3AA906507A

€23.95

Free delivery: Nov 12 – 13

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Part no. 4G0951177

Audi A6 C7 A7 4G Alarm Movement Detector Roof Headliner 4G0951177

€23.95

Free delivery: Nov 12 – 13

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Part no. 5A23E01

BMW F44 B38C 218i Petrol Engine Control Unit ECU DME 5A23E01 Automatic

€213.95

Free delivery: Nov 12 – 13

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Part no. M8A2-14N166-AB

Range Rover Velar L560 Battery To Junction Box Wiring Loom Harnes M8A2-14N166-AB

€56.95

Free delivery: Nov 12 – 13

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Part no. 4F0971765

Audi A6 C6 Wing Mirror Adjustment Switch Wiring Loom Cable 4F0971765

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W0971693AB

Audi A4 B9 Rear Door Card Loom Wiring Loom Harness Cable 8W0971693AB

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W0907468M

Audi A4 B9 A5 F5 Gateway Control Module Unit ECU 8W0907468M

€89.95

Free delivery: Nov 12 – 13

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Part no. 4B0951173

Audi A3 8L A4 B5 A6 C5 Alarm Control Module Unit ECU 4B0951173

€23.95

Free delivery: Nov 12 – 13

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Part no. 8631725-8

BMW F22 F30 F32 N20 184HP Engine Control ECU Kit DME 8631725 Manual

€284.95

Free delivery: Nov 12 – 13

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Part no. 5A081D5

BMW F20 F30 F32 Harman Kardon Audio Amplifier Booster Module Unit 5A081D5

€189.95

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Part no. 6944875

BMW E36 Z4 E85 Z3 Module Radar Burglar Alarm Sensor 6944875

€23.95

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Part no. 6F0971161T

Seat Arona KJ7 Door Wiring Harness Loom Cable Rear Right O/S 6F0971161T

€32.95

Free delivery: Nov 12 – 13

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Part no. 06K907425N-2

VW Golf Mk8 CD1 2.0 TFSI DNFG 321HP Quattro Engine ECU 06K907425N Automatic

€208.95

Free delivery: Nov 12 – 13

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Part no. 1509691

Ford Mondeo Mk4 Gearbox Earth Ground Cable Wiring Lead 8G9T-14324-PB

€23.95

Free delivery: Nov 12 – 13

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Part no. 9367693

BMW M5 F90 G11 G12 Power Distribution Relay Fuse Box Make Contact 9367693

€23.95

Free delivery: Nov 12 – 13

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Part no. YCH-20260427

Mercedes W176 On-Board Display Multimedia Screen 10.25" Linux Infotainment

€132.95

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Part no. 8511409

BMW F10 F11 N57N Control Unit Module Box Cover Bracket Carrier Mount 8511409

€23.95

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Part no. 1767940

Ford Transit Custom Sat Nav GPS Aerial Antenna Module BK2T-10E893-AC

€47.95

Free delivery: Nov 12 – 13

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Part no. MB3G-12C550-DG

Ford Transit Custom Mk2 Glow Plug Control Module 2.0 Diesel MB3G-12C550-DG

€175.95

Free delivery: Nov 12 – 13

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Part no. 3C0937049AD

VW Passat B6 Golf Mk5 Caddy 2K BCM Body Control Comfort Module 3C0937049AD

€23.95

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Part no. 4L2910401B-1

Audi Q7 4L 3.0 TDI CRCA Quattro Engine ECU Kit Lock + Ignition + Key 4L2910401B

€854.95

Free delivery: Nov 12 – 13

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Part no. 8639595-16

BMW F30 320i N20 Engine Control Unit ECU DME 2.0 Petrol 184HP Manual 8639595 Kit

€332.95

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Part no. 21367510

BMW X2 F39 Antenna Amplifier AMP Control Module Unit 21367510

€23.95

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Part no. 5Q0959595E

Audi A3 8V Door Control Module Unit ECU Rear Left Right N/O/S 5Q0959595E

€23.95

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Part no. A2385452700

Mercedes C238 Rear Control Unit Module Bracket Holder Trim Panel A2385452700

€23.95

Free delivery: Nov 12 – 13

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Part no. 05E907309CA-1

Audi A3 8Y 30 TFSI 1.5 DXDE 115HP Engine Module Control ECU 05E907309CA Manual

€165.95

Free delivery: Nov 12 – 13

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Part no. 7266666

BMW F11 Touring Control Unit Rear Tailgate Boot Lid Function Module 7266666

€23.95

Free delivery: Nov 12 – 13

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Part no. A2045402710

Mercedes W204 Wiring Loom Cable Door Rear Left Right N/O/S A2045402710

€23.95

Free delivery: Nov 12 – 13

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Part no. A2469009212

Mercedes X117 Tailgate Boot Control Rear Module Unit A2469009212

€80.95

Free delivery: Nov 12 – 13

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Part no. 6960220

Airbag Module BMW E65 E66 Airbag A-Pillar Sensor Right O/S Control Unit 6960220

€23.95

Free delivery: Nov 12 – 13

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Part no. 9207025

Mini R55 R56 LCI R57 Door Wire Cable Harness Wiring Loom Driver's Side 9207025

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 522350570

Vauxhall Movano C Radio Stereo Multimedia Control Module Head Unit 522350570

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8578504

BMW F30 LCI 335dX N57Z Engine Gearbox Module Wiring Cable Loom Harness 8578504

€28.95

Free delivery: Nov 12 – 13

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Part no. A2125406505

Mercedes W212 Door Wire Wiring Loom Front Right O/S A2125406505

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6820234

Air Conditioning Module BMW F20 F21 F30 F31 A/C Control Unit 6820234

€23.95

Free delivery: Nov 12 – 13

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Part no. 9339339

BMW 1 3 F20 F21 F30 F31 Driver Side Seat Wiring Loom Cable Harness 9339339

€23.95

Free delivery: Nov 12 – 13

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Part no. C2Z6279

Jaguar XF X250 Front Door Tweeter Speaker Unit Left Right N/O/S 8X23-18808-EA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2100499N

Audi A6 C6 Front Seat Wiring Harness Cable Loom 2100490T

€23.95

Free delivery: Nov 12 – 13

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Part no. 9237968

BMW F07 GT Central Gateway Module ECU Control Unit Lear ZGW-01 High 9237968

€66.95

Free delivery: Nov 12 – 13

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Part no. 7P0937211A-1

VW Volkswagen Touareg 7P Fuse Box Relay Control Module 7P0937211A

€23.95

Free delivery: Nov 12 – 13

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Part no. 9X23-14B654-AC

Jaguar XF X250 Pedestrian Protection Control Unit Module ECU 9X23-14B654-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. GX63-15C859-DC

Range Rover Sport L494 Parking Sensor Control Module ECU GX63-15C859-DC

€28.95

Free delivery: Nov 12 – 13

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Part no. 4G8959795A

Audi A7 4G8 Door Control Module Electrical Unit ECU Rear Right O/S 4G8959795A

€23.95

Free delivery: Nov 12 – 13

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Part no. E84-SCREEN

BMW X1 E84 Radio Navigation Head Unit Android CarPlay Screen Display 10.25"

€237.95

Free delivery: Nov 12 – 13

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Part no. A1645451840

Mercedes W164 ECU Control Unit Bracket Holder A1645451840

€23.95

Free delivery: Nov 12 – 13

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Part no. 4G9035225C

Audi A6 C7 Avant Antenna Amplifier Upper Left N/S 4G9035225C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EJ32-14F504-AF

Range Rover Evoque L538 Dynamic Suspension Control Module ECU EJ32-14F504-AF

€32.95

Free delivery: Nov 12 – 13

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Part no. A2059007437

Sam Module Mercedes S205 Relay Fuse Box Rear Control Module In Trunk A2059007437

€99.95

Free delivery: Nov 12 – 13

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Part no. 7928690

BMW F74 Gran Coupé Radio Audio Remote Control Receiver 7928690

€23.95

Free delivery: Nov 12 – 13

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Part no. A2075406233

Mercedes A207 Front Seat Wiring Harness Cable Left Right N/O/S A2075406233

€56.95

Free delivery: Nov 12 – 13

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Audi Q3 F3 Headlight LED Inner Module Unit Left N/S 11080370000

€113.95

Free delivery: Nov 12 – 13

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Part no. A2059001811

Mercedes W205 Rear Door Control Module Unit Left N/S ECU A2059001811

€23.95

Free delivery: Nov 12 – 13

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Part no. 6832695

Mini Clubman F54 Battery Cable Negative Terminal Wiring 6832695

€23.95

Free delivery: Nov 12 – 13

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Part no. DPLA-14F498-AA

Range Rover Sport L494 Vogue L405 A/C Climate Control Unit Module DPLA-14F498-AA

€66.95

Free delivery: Nov 12 – 13

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Part no. HJ32-14369-ACB

Range Rover Evoque L538 Front Parking Sensor Wiring Loom Harness HJ32-14369-ACB

€47.95

Free delivery: Nov 12 – 13

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Part no. 6C0971349AN

Volkswagen Polo Gti 6c Battery Wiring Harness Loom Cable 6C0971349AN

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2429004101

Mercedes W204 W212 Telephone Control Unit Module ECU A2429004101

€23.95

Free delivery: Nov 12 – 13

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Part no. 8R0971035A

Audi Q5 8R Door Wiring Loom Harness Electrical Cable Driver's Side 8R0971035A

€23.95

Free delivery: Nov 12 – 13

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Part no. 057911023J

Porsche Cayenne 92A Starter Motor 385HP 4.2 Diesel CUDC Automatic 057911023J

€189.95

Free delivery: Nov 12 – 13

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Part no. 6818815

Mini Cooper One F57 Convertible Air Module Control Unit 6818815

€85.95

Free delivery: Nov 12 – 13

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Part no. 8E1910560

Audi RS4 B7 Engine Control Module ECU 4.2 Petrol 419 HP BNS 8E1910560 Manual

€569.95

Free delivery: Nov 12 – 13

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Part no. K8D2-18C901-CD

Range Rover Evoque L551 Antenna Control Unit Amplifier Left N/S K8D2-18C901-CD

€28.95

Free delivery: Nov 12 – 13

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Part no. 7641798-1

Mini Cooper F54 F55 F56 F57 F60 1 Battery Tray Cover Trim Boot 7641798

€23.95

Free delivery: Nov 12 – 13

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Part no. KG9T-9B243-AC

Ford Mondeo Mk5 Wiring Cable Adapter Connector KG9T-9B243-AC 2374708

€23.95

Free delivery: Nov 12 – 13

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Porsche Macan 95B Front Windscreen Lane Assist Kafas Camera 95B980654D

€218.95

Free delivery: Nov 12 – 13

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Part no. 03C907309A-1

Volkswagen Golf Mk6 Engine ECU Kit 1.4 TSI CAXA 122HP Manual 03C907309A

€170.95

Free delivery: Nov 12 – 13

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BMW X5 Series E70 LCI Ventilation Grommet Unit Box Cover 7798875

€23.95

Free delivery: Nov 12 – 13

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Audi A3 8P PDC Parking Distance Control Sensor Module Unit ECU Phantom Black Z9Y

€23.95

Free delivery: Nov 12 – 13

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Ford Fiesta Mk7 Engine ECU Control Unit 105HP 1.6 Petrol Automatic F1B112A650YB

€104.95

Free delivery: Nov 12 – 13

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€56.95

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€146.95

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€47.95

Free delivery: Nov 12 – 13

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Part no. 8V51-15K600-EF

Ford Fiesta Mk7 Body Control Module BCM Controller Unit ECU 8V51-15K600-EF

€23.95

Free delivery: Nov 12 – 13

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Porsche Cayenne 9PA Centre Console Armrest Wiring Harness Cable Loom 7L5971641

€23.95

Free delivery: Nov 12 – 13

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Part no. 4G9971095D

Audi A6 C7 Allroad Front Bumper PDC Sensor Wiring Loom Harness 4G9971095D

€56.95

Free delivery: Nov 12 – 13

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Part no. SOUNDSTAGE-SUBWOOFER

Soundstage Car Audio BA Series Enclosure Subwoofer Speaker Amplifier Box 600W

€341.95

Free delivery: Nov 12 – 13

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Part no. HB3T-3F720-AB

Ford Ranger Mk1 Mk3 Power Steering Rack Wiring Cable HB3T-3F720-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. 5P0971584B

Seat Altea 5P Toledo Mk3 Steering Wheel Wiring Cable Harness Adapter 5P0971584B

€56.95

Free delivery: Nov 12 – 13

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Part no. 5Q4959392B

Skoda Octavia 5E Front Door Control Module Unit Passenger Side 5Q4959392B

€23.95

Free delivery: Nov 12 – 13

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Part no. 5WA959436N

Audi S3 8Y Keyless Control Module Unit ECU 5WA959436N

€28.95

Free delivery: Nov 12 – 13

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Part no. 1K0971228AA-1

Volkswagen Caddy Maxi Positive Battery Cable Harness Wire 1K0971228AA

€23.95

Free delivery: Nov 12 – 13

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Part no. AH42-971111-DB

Range Rover L322 Anti Theft Sounder Alarm Link Wiring Cable AH42-971111-DB

€32.95

Free delivery: Nov 12 – 13

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Toyota Rav4 Mk2 Front Impact Crash Sensor 2.0 Petrol 1AZFE Manual 8917345050

€23.95

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