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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Land Rover Discovery Sport L550 Glow Plug Relay Module Unit Diesel KX63-189E2-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8570238

BMW E87 E90 F20 F30 Engine Starter Motor Actuator N47 N47N Diesel 8570238

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009050338

Mercedes W212 Multi-Purpose Windscreen Camera Control Unit Module A0009050338

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6519003403-1

Mercedes W906 314 CDI OM651 Engine Module ECU Kit A6519003403 Automatic

€474.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9664522280

Peugeot 308 T7 Interior Roof Display Info Seat Belt Indicator Panel 9664522280

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2223411000

Mercedes W205 W222 High Voltage Connector Cover Cap A2223411000

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8583606

BMW X3 F25 X4 F26 Diesel Automatic Engine Wiring Harness Gearbox Cable 8583606

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 059971627D

Audi A6 C7 High Pressure Pump Fuel Line Electrical Wiring Harness 059971627D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9224868

BMW F10 F11 F12 F13 Tweeter Speaker Bang&Olufsen Rear Left Right N/O/S 9224868

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9244426

BMW X5 E70 Rear Bumper PDC Cables Wiring Loom Set 9219647

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0971679B

Audi A4 B8 Glove Box Passenger Air Module Switch Wiring Harness Cable 8K0971679B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469004512

Mercedes-Benz A M Class W166 W176 Parking Brake Control Unit Module ECU

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CH22-14632-DC

Land Rover Discovery 4 L319 Door Wiring Harness Rear Right O/S CH22-14632-DC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9314229

BMW F20 Front Electronic Module Body Control Unit FEM ECU 9314229

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7510738-7

Ignition Coil Mini R50 R52 R53 Petrol W10 Coil Pack Module Unit 7510738

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009059300-KB

Mercedes W205 W212 W246 Parking Distance Sensor Parktronic Black 191 A0009059300

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6982394

BMW E81 E84 E87 E90 E91 Parking Control Module Unit PDC 6982394

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5J6971161AQ

Skoda Fabia Mk2 Rear Door Wiring Loom Harness Left N/S 5J6971161AQ

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 06D911021B

Audi A4 B8 A5 8T Engine Starter Motor Actuator Unit Petrol 06D911021B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7607973

BMW F20 F21 F30 Wiring Loom Harness Injection Valve Ignition 7607973

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2229002713

Mercedes W222 W205 Electric Parking Brake Control Module ECU A2229002713

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2215450601

Mercedes W221 Dashboard Fuse Box Front Left N/S Control Module A2215450601

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8794297

BMW F20 F21 F22 F30 F31 F32 Mini F55 F56 F57 Head Unit Basic Media DAB 8794297

€137.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. K8D2-18C901-AD

Range Rover Evoque L551 Antenna Control Unit Amplifier Right O/S K8D2-18C901-AD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2058200704

Sunroof Wiring Mercedes W205 X253 Panoramic Roof Motor Cable Harness A2058200704

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5G0907324

Audi RSQ3 F3 VW Golf MK7 Active Suspension Module Mount Bracket Holder 5G0907324

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 079971627Q

Audi RS4 B8 RS5 8T Fuel Injector Wiring Loom Harness 4.2 V8 079971627Q

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GK2T-19L540-AB

Ford Transit Custom Sliding Door Wiring Loom Harness Left N/S GK2T-19L540-AB

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0035186AB

VW Volkswagen Passat B7 Radio CD Player Head Unit DAB Stereo 1K0035186AB

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6935597

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5QD951605

Skoda Superb Mk3 3V Anti-Theft Alarm Siren Horn Signal Module Unit 5QD951605

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. K8D2-114B06-AC

Range Rover Evoque L551 Battery Shield Bracket Tray Cover K8D2-114B06-AC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6906600-1

BMW Mini Cooper R50 R52 R53 JCW Fuse Box Housing 6906600

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. K8D2-18808-BB

Land Range Rover Evoque L551 Rear Door Speaker Left Right N/O/S K8D2-18808-BB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8672514-1

BMW F80 M3 F82 F83 M4 431HP Engine Control ECU Kit DME 8672514 + FEM Module Key

€1,139.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 05L907309AA

Volkswagen Caddy SB 2.0 TDI DTRE 102HP Engine ECU Kit BCM + Key 05L907309AA

€227.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2468200526

Seat Module Mercedes W176 W246 Control Unit Front Left Right N/O/S A2468200526

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4M0906093L

Audi Q7 4M 3.0 TDI Fuel Pump Control Unit Module ECU 4M0906093L

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 95B907159T

Porsche Macan 95B Engine Sound Generator Actuator Module Control Unit 95B907159T

€165.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G8907472

Audi A7 4G8 Dynamic Flashing LED Headlight Lamp Control Module Unit 4G8907472

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1779009902

Mercedes W177 Front Windscreen Windshield Camera Multi Purpose Unit A1779009902

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. EL2T-19A391-ACW

Ford Transit Custom Mk8 Bluetooth Microphone Unit Module EL2T-19A391-ACW

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0907468P

Audi S5 8T Gateway Control Unit Module ECU 8T0907468P

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CV11-12A650-CE

Ford B-MAX 1.5 TDCI 75HP UGJC Diesel Engine Control ECU 8V2112A650KE Manual

€379.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-14B673-AE

Land Rover Discovery Sport L550 Rear Tailgate Control Unit Module FK72-14B673-AE

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BS7T-14K131-B

Land Rover Freelander 2 L359 Fuse Relay Box BS7T-14K131-B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2429007001

Mercedes W176 W204 W212 Telematics Communication Control Unit Module A2429007001

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-14A076-CA

Range Rover Evoque L538 Fuse Box Relay Lid Cover BJ32-14A076-CA

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8693361-2

BMW F87 LCI M2 370HP N55 Engine Control Module Unit ECU DME 8693361 Automatic

€422.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DT1T-14B321-AF

Ford Transit Connect Mk2 II Air Module Control Unit ECU DT1T-14B321-AF

€170.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7301271-2

BMW X5 F15 F85 Rear Trunk Lid Boot Tailgate Lamp Light Wiring Left N/S 7301271

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5H0945308A-2

Volkswagen Golf Mk8 CD1 Tail Light Lamp Wiring Inner Rear Right O/S 5H0945308A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 80A915459-1

Audi Q5 FY Battery Positive Cable Clamp Control Module Terminal 80A915459

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8583657-1

BMW F20 E90 LCI Mini R56 LCI Glow Plug Wiring Wiring Harness Engine Module

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W8971035AD

Audi A5 S5 F5 Door Trim Panel Harness Wiring Wire Front Driver Side 8W8971035AD

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9243637

BMW X3 F25 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 9243637

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1036060061

Range Rover Evoque L538 Xenon Headlight Control Module Ballast 1036060061

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8578946-4

BMW F20 F30 F32 120Xd 320Xd 420Xd N47N Engine Control ECU DDE 8578946 Automatic

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129009622

Mercedes W212 Fuse Box Relay Rear SAM Control Unit Module A2129009622

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2229003619

Mercedes W205 W213 W222 Radio Sat Nav Head Unit A2229003619

€522.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8512499

Engine Control Unit BMW E81 E87 E90 E91 LCI N47 Diesel ECU DDE 8512499

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BK2T-19G247-AA

Ford Transit Mk8 Centre Console Power Outlet Socket 12V BK2T-19G247-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6940778

BMW E65 E66 Front Seat Wiring Loom Harness Right O/S 6940778

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129001227

Gateway Control Unit Mercedes W204 W212 Gateway Module ECU VST A2129001227

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9292350

Battery Terminal Cover BMW X3 F25 X5 F15 Trim Panel Base B + Positive 9292350

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9143270

Mini Cooper One R50 R53 Loudspeaker Rear 65136801101 6801101

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0055461340

Mercedes W447 Energy Distributor Plug Module A0055461340

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7516376

BMW E65 E66 E67 Electric Valve 735i 745i 735Li 745Li 745LiS 7516376

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6928267

BMW E65 E66 E67 Gateway Sensor Air Module Control Unit 6928267

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6401501091

Mercedes W169 W245 OM640.941 140HP Engine Control ECU A6401501091 Automatic

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129000406

Fuel Pump Module Mercedes W207 C207 A207 Control Unit ECU A2129000406

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G1035053G

Audi Q7 4l Radio Satelite Navigation System Control Head Unit ECU 4G1035053G

€360.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9362351

Head Unit Mini F55 F56 BMW F45 i3 I01 Radio DAB Media Player Unit 9362351

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0919275-ARG

Skoda Octavia Mk2 PDC Parking Distance Sensor 4H0919275 Arctic Green Metallic 8B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7514357

BMW Z4 E85 Roadster Cabrio Cable Alternator Starter Base B 7514357

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0959792D

Audi A5 8T Front Door Control Module Unit Left N/S 8T0959792D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8512500-1

BMW E81 E82 E87 LCI E88 123d Engine N47S ECU Kit DDE 8512500 CAS3 + Key Manual

€317.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1776204201

Mercedes C118 W177 W247 Battery Box Trim Housing Cover Support A1776204201

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1699000200

Mercedes-Benz A B W169 W245 Front Right Door Control Unit Module A1699000200

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9270501

BMW X3 E83N E70 LCI E71 PDC Parking Ultrasonic Sensor Schwarz 7687127

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7561834-22

BMW E87 E90 120i 320i N46 150HP Engine Control DME Module 7561834 Automatic

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4L0910289K

Audi Q7 4L Body Control Comfort Unit Module BCM Unit ECU 4L0907289K

€237.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8E0035111D

Audi TT 8J Radio Head Unit Navi CD DVD Player Changer 8E0035111D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CPLA-14D617-AC

Range Rover L405 Front Door Control Unit Module Passenger Side CPLA-14D617-AC

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9159310

BMW F10 Central Sensor LOW 9159310

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. RVH000055-1

Land Rover Discovery 3 L319 Rear Air Suspension Relief Valve Block RVH000055

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6395400044

Mercedes Vito W639 Anti Theft Alarm Switch Loom Cable A6395400044

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2056100534

Mercedes W205 Battery Support Protection Bracket Tray A2056100534

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9350313

BMW F90 M5 G11 G30 Fuse Box Power Distribution Unit Front Right O/S 9350313

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7605478

BMW 1 3 Z4 Series F20 F30 E89 Petrol Alternator 170A 7605478

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2909003001

Mercedes C238 E53 4matic Transfer Case Torque Distribution Control ECU

€379.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0035423019-1

Power Relay Control Mercedes W176 W246 Module 4 Pin 12V 20A SET A0035423019

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 04E907309AC-2

Audi A1 8X 1.4 TFSI CZCA 125HP Engine Control ECU Kit 04E907309AC Manual

€180.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6946073

BMW E46 Battery Cable Positive Plus Lead Wire 6946073

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3C0937125-1

VW Passat B6 Sharan 7N Fuse Box Relay Electrical Module Unit 3C0937125

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9186664

BMW 3 Series E92 Front Right O/S Driver Side Door Wire Wiring Loom 9186664

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LK62-12B684-KAA

Range Rover L494 Engine ECU Control 3.0 Diesel Hybrid Automatic LK62-12B684-KAA

€807.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059000227

Mercedes C205 Vehicle Dynamics Suspension Control Module ECU A2059000227

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. NNW502434

Land Rover Discovery 3 L319 Air Module Control Unit ECU NNW502434

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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