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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Door Wiring Loom BMW E63 E64 Harness Passengers Side 6928975

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9217004

Battery Cable Plus BMW X5 E70 E70N LCI X6 E71 Positive Pole 9217004

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7939175

Mini F54 F55 F56 F57 F60 Rain Light Solar HUD Sensor 9496244

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0061514501

Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0907115N

Audi TT 8J 2.0 TFSI BWA 200HP Engine Control Module ECU Manual 8J0907115N

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6920461

BMW E60 E61 E63 E65 Amplifier Stereo HiFi Harman/Becker 6920461

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9290990

Head Unit BMW F20 F21 F30 Radio Professional CD Player Controller Module 9290990

€275.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2025402373-1

Mercedes A C E Class 1 W169 W203 W211 OBD Diagnostic Plug Cover A2025402373

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1638200089

Mercedes-Benz M-Class ML W163 Radio Aerial Antenna Amplifier A1638200089

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9368387

BMW F07 F10 F11 X6 F16 Rear Cabin Entertainment Audio CD DVD Player 9368387

€222.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9243559

BMW X6 Series E71 Cable Loom Door Rear Left Right N/O/S Wiring Harness 9243557

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02Z911024H

Volkswagen Passat B7 Starter Motor Actuator TDI Diesel Engine 02Z911024H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9079003303

Mercedes W907 Front Radar Distance Control Unit Module A9079003303

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EJ32-14D620-AA

Range Rover EVOQUE L538 Rear Door Module Controle Unit EJ32-14D620-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9289637

BMW F10 Rear Window Parcel Shelf Loudspeaker Speaker Left Right N/O/S 9289637

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139001722

Mercedes W213 W907 Transmission Gearbox Control Unit Module ECU A2139001722

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8M5T-15K603-KA

Ford Mondeo Mk4 Keyless Entry Receiver Antenna Module 8M5T-15K603-KA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CC1T-10300-BD

Ford Transit Mk8 2.2 TDCi Diesel Engine Alternator Generator Unit CC1T-10300-BD

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6964142

BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver-Side 6933266

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635403110

Mercedes-Benz M ML W163 Rear Left Right Door Wiring Loom Harness A1635403233

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9065410740

Mercedes Sprinter W906 Battery Cover Frame Bracket Mount Holder A9065410740

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DN1T-15K600-GE

Ford Fiesta Mk7 Body Control Module BCM Controller Unit ECU DN1T-15K600-GE

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0919475L

Audi A6 C7 PDC Parking Distance Control Module Unit ECU 4H0919475L

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7M0951253C

Volkswagen T5 Audi Seat Skoda Relay Black Control Unit 5 Pin 12V 7M0951253C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465411005

Battery Cover Mercedes C117 W176 W246 Box Trim Lid Panel Housing A2465411005

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14B321-CF

Ford Fiesta Mk7 3Dr Safety Module ECU Restraint Control Unit C1BT14B321FF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7797521-1

BMW E60 E61 E63 E65 E83 Alternator Generator Lucas 170A LRA02319

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7792544

Mini One D Diesel W17 1ND 88HP Engine ECU Control Unit DDE 7792544 Manual

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA907007AC

Volkswagen Golf Mk8 Air Conditioning A/C Control Unit Module 5WA907007AB

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0959655A

VW Volkswagen Touareg 7L Air Module Control Unit Crash Impact Sensor 7L0959655A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8510829

BMW E90 E91 LCI N47N 320ed 320d ed 163HP ECU Engine Control DDE 8510829 Manual

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C8971694AN

Volkswagen Passat CC Door Wiring Harness Loom Rear Right O/S 3C8971694AN

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2354701-1

BMW 1 3 5 7 X5 E60 E65 E70 E81 E87 E90 F10 Starter Motor 2354701

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0959107A

Audi Q3 8U Tailgate Lift Boot Lid Control Unit Module Trunk 8U0959107A

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8611289

Mini Cooper S R56 JCW Coolant Thermostat Adapter Wiring Cable 8611289

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6461540002-1

Alternator Mercedes Sprinter W906 Diesel OM646 Engine Alternator A6461540002

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6940624

BMW E81 E87 E90 E91 E92 Ultrasonic-sensor PDC Arktis Metallic A34 6940624

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8507906

BMW 1 3 F20 F21 F30 Engine Gearbox Wiring Harness Glow Plug Module 8507906

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9203081

BMW E63 Light Control Unit Module LCM LM II E6X LWR 9203081

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7638005

BMW F20 F30 F32 Earth Ground Cable Negative Battery Lead Wiring 7638005

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907383D

Audi Q5 8R A5 8T Tow Bar Control Module ECU 8K0907383D

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9259823

BMW E92 Front Door Wiring Loom Cable Harness Passenger Side 9259823

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9339823

BMW X3 G01 G11 G12 G30 G31 Battery Positive Terminal Pint Jump Start 9339823

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14D624-AAC

Ford Fiesta Mk7 Door Jumper Cable Wiring Loom Left Right N/O/S C1BT-14D624-AAC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469000516

Radio CD Player Mercedes W176 W246 COMAND Nav Sat Head Unit A2469000516

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2755704-1

Mini Cooper One R55 R56 R57 R60 R61 Fuse Box Empty Housing 2755704

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9321016-1

BMW F10 F11 LCI On-Board Screen Central Information Display 10,25" 9321016

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9306220

Telematics Module BMW F10 F20 F30 F31 Bluetooth Teleservices GPS 9306220

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6960308

BMW 1 Series E88 Convertible Rear Bumper FM Radio Aerial Antenna 6960308

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469009413

Mercedes W176 W246 Control Unit Body Control Module ECU A2469009413

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8680374

BMW F45 Alternator Generator 8680374

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8515494

BMW 5 Series F10 F11 530d N57N Cable Alternator Starter Base B+ 8515494

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L911024B

Audi A6 C7 2.0 TDI CGLC Diesel Starter Motor 03L911024B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7M0951253A-1

Audi VW Volkswagen Seat Relay Unit Module 4 Pins Set x2 7M0951253A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7550975-1

Starter BMW E81 E82 E87N E88 E90 E91 E92 N43 Starter Motor 7550975

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8507398

Glow Bracket BMW E60 E87 LCI E90 E91 E92 F10 F11 N47 Diesel Relay Plug 8507398

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FU5T-14B192-AA

Ford Transit Mk8 Relay 5-Pin Blue FoMoCo FU5T-14B192-AA 4RC933364

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-10C652-AA

Range Rover Evoque L538 Negative Battery Cable Battery To Earth BJ3210C652AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7426094

BMW F83 M4 S55 Petrol Engine Fuel Pump Control Module Unit ECU 7426094

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0035423019

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9266838

BMW X3 F15 Can Bus Interface 120Ohm Control Module Unit ECU 9266838

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9365054

BMW F30 Wiring Harness Loom Rear Trunk Lid Boot Tailgate 9365054

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8654632

BMW F40 F44 F45 Mini Cooper F55 F56 Engine Starter Motor Positive Battery Cable

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KK3T-15K868-DCC

Ford Transit Mk8 Rear Park Distance Sensor Wiring Harness Cable KK3T-15K868-DCC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9124583-KAS

BMW E87 E90 Front Rear PDC Ultrasonic Parking Sensor Kaschmir Silver A72 9124583

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0959263

Heater Resistor VW Transporter T5 Heater Blower Motor Fan Resistor 7E0959263

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2044404732

Mercedes W204 Estate PDC Wiring Rear Bumper Parking Sensor Cable A2044404732

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075409334

Mercedes-Benz E-Class W207 Cabrio A207 Battery Ground Cable Wiring Mass Lead

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9280186

BMW F10 F11 F01 F02 F03 LCI Air Module Control Module ECU Unit 9280186

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9251701

BMW F20 F21 F30 F32 CIC Display Screen Connecting Cable Wiring Loom Lead 9251701

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9127088

BMW E81 E90 DC/DC Torque Converter Module Wandler 9253208 9127088

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7S71-15K601-ED

Ford Mondeo Mk4 Remote Key Fob Ignition 7S71-15K601-ED

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2T1U-10300-CG

Ford Transit Connect Focus Mk1 Engine Alternator Generator 110A 2T1U-10300-CG

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048700185

Mercedes W204 Bluetooth Control Unit Module Media Interface ECU A2048700185

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6857314

Crash Module BMW F01 F02 LCI F10 F11 F13 ICM Control Unit ECU

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9148264

Seat Module BMW E87 E90 E91 E92 Control Unit ECU 9148264

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9069820109

Mercedes Sprinter W906 Positive Battery Terminal Cover Cap Trim Red A9069820109

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669059302-2

Mercedes W166 Rear View Reversing Camera Trunk Lid Tailgate A1669059302

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6H22-14C708-AC

Land Rover Discovery 3 L319 Front Electric Seat Control Module 6H22-14C708-AC

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645403706

Wiring Mercedes X164 Dashboard Lower Control Panels Switch Harness A1645403706

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9316569

BMW X5 F15 Fuse Box Rear Relay Module Control Unit 9316569

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A1669003602

Mercedes W204 R172 DAB Receiver Digital Audio Control Unit Module A1669003602

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K2907115P-1

Audi A5 8T A4 B8 8K 2.0 TFSI CDNC 211HP Engine ECU Kit 8K2907115P Key + Ignition

€303.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9384687

BMW F46 KaFAS Camera Front Windscreen Parking Camera Module Unit 9384687

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6951674

BMW E81 E87 E90 PDC Parking Sensor Ultrasonic Sparkling Graphite A22

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6975069

Mini Cooper One R50 R52 R53 Cable Door Right Wiring Harness Loom 6975062

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6997612

BMW F20 F21 Air Conditioning A/C Climate Control Unit Module ECU 6997612

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02T911024N

Seat Ibiza 6J VW Volkswagen 6R Starter Motor 1.2 1.6 Petrol Engine 02T911024N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9314023

MINI Cooper R56 LCI Aerial Antenna Amplifier Diversity Module 9314023

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0907530K

Audi A3 8P Central Gateway Control Unit Module Relay ECU 1K0907530K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6953467

BMW 1 3 Series E88 E93 Convertible Tel Phone Antenna Aerial 6953467

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059000328

Door Module Mercedes GLC X253 Front Door Left Control Module A2059000328

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9207075

BMW X3 X5 Series E83 E53 Telematics Control Unit Module 9207075

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-14F041-AE

Land Rover Discovery Sport L550 Body Control Module BCM Unit FK72-14F041-AE

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3456365

Roof Security Alarm Mini R55 R56 One Ultra Sonic Module 3456365

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6949450

BMW 5 Series E60 E61 Centre Console DSC PDC Switch Center Cluster 6949450

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6397600340

Mercedes Vito W639 Door Handle Cable Catch Bowden Cable Rear A6397600340

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1121535379

Mercedes W220 S350 M112.972 245HP Engine Module ECU A1121535379 Automatic

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

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