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 E81E88 E90 E92 Speed Sensor Yaw Rotary Rate Sensor Adaptive Steering 6784961

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9214243

BMW F10 F11 Battery B+ Engine Compartment Terminal Point 9214243

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2465411005

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8P0035186AB-1

Audi A3 8P Multimedia Radio CD Player Head Unit 8P0035186AB

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4479058203

Mercedes Vito W447 Radio Remote Control Alarm Key Fob Unit A4479058203

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2035454601

Mercedes W203 A209 Fuse Box Central Electrics Control Unit Module A2035454601

€137.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 5WA907007AC

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

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0959655A

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C8971694AN

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8611289

Mini Cooper S R56 JCW Coolant Thermostat Adapter Wiring Cable 8611289

€28.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 9380947

BMW X1 F48 Mini Cooper F55 F56 F60 Connecting Line CID/HU-H 9380947

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2469000516

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

€94.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 9306220

Telematics Module BMW F10 F20 F30 F31 Bluetooth Teleservices GPS 9306220

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0941329

Audi A3 8V 30 TDI DGTE Ad Blue Reducer Dosage Control Module Unit ECU 7N0941329

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06H971627

Audi A5 8T 2.0 TFSI Petrol Fuel Injectors Wiring Cable Harness 06H971627

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6960308

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8515494

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

€31.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 8T0919611-1

Audi A4 B8 Head Unit Media Player Controller Knob Switch Panel 8T0919611

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4N0907064DD

Audi A6 C8 Body Control Comfort Unit Module BCM Convenience Unit ECU 4N0907064DD

€113.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. A0035423019

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9266838

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9365054

BMW F30 Wiring Harness Loom Rear Trunk Lid Boot Tailgate 9365054

€32.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 7E0959263

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2044404732

Mercedes W204 Estate PDC Wiring Rear Bumper Parking Sensor Cable A2044404732

€32.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 9127088

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7S71-15K601-ED

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0915181

Audi A4 RS4 B8 Battery Terminal Negative Cable Loom Harness Wiring 8T0915181

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 93455416

Renault Trafic III Vauxhall Vivaro B Positive Battery Cable Lead Wire 93455416

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2048700185

Mercedes W204 Bluetooth Control Unit Module Media Interface ECU A2048700185

€51.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 9148264

Seat Module BMW E87 E90 E91 E92 Control Unit ECU 9148264

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9069820109

Mercedes Sprinter W906 Positive Battery Terminal Cover Cap Trim Red A9069820109

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6H22-14C708-AC

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

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6519065700

Mercedes W907 314 CDI Engine Alternator Generator Valeo A6519065700

€161.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9316569

BMW X5 F15 Fuse Box Rear Relay Module Control Unit 9316569

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 6777641-2

BMW X5 E70 E81 E87 E90 E91 E92 E93 Air Module Wiring Steering Wheel Loom 6777641

€32.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 9384687

BMW F46 KaFAS Camera Front Windscreen Parking Camera Module Unit 9384687

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6951674

BMW E81 E87 E90 PDC Parking Sensor Ultrasonic Sparkling Graphite A22

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0018209326

Mercedes-Benz E CLS Class W211 W219 Crash Sensor Left Right N/O/S A0018209326

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9150883

BMW 3 E93 Convertible Boot Trunk Lid Tailgate Wiring Loom Harness Cables 9150883

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6975069

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

€85.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 9314023

MINI Cooper R56 LCI Aerial Antenna Amplifier Diversity Module 9314023

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7627023

BMW F20 F21 F30 Petrol N13 Automatic Gearbox Engine Sensor Module 1 Wiring

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6953467

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9207075

BMW X3 X5 Series E83 E53 Telematics Control Unit Module 9207075

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 02Z911023N

Volkswagen VW Golf VI Engine Starter Motor 1.6TDI 2.0 TDI Diesel 02Z911023N

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-14D618-AC

Range Rover L405 Door Module Control Unit Driver's Side CPLA-14D618-AC

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3456365

Roof Security Alarm Mini R55 R56 One Ultra Sonic Module 3456365

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 9365780

BMW X5 F15 Wiring Front Right O/S Door Harness Loom 9365780

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 443937105A

VW Volkswagen Audi Skoda Seat Little Fuse Amp 30A 12V 443937105A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1776203400

Mercedes W177 W247 Battery Bracket Mount Holder Support A1776265300

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7PP959663E-1

Porsche Cayenne 92A VW Touareg 7P Voltage Stabilizer Control Module 7PP959663E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4L0959794B

Audi Q7 4L Door Control Module Electrical Unit ECU Rear Right O/S 4L0959794B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1669007609

Mercedes ML W166 Door Control Module Unit ECU Front Right O/S A1669007609

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9367679

Screen Ring Mini F56 F60 Navigation Display Head Unit Trim Cover 9354397

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F0959792E

Audi A6 C6 Front Passenger Side Door Left N/S Module Unit Control ECU 4F0959792E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5G0971104L

VW Volkswagen Golf Mk7 Wiring Loom PDC Rear Harness Parking Sensor 5G0971104L

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059001240

Mercedes GLC 220d X253 Air Conditioning Climat A/C Control Module A2059001240

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1698208526

Mercedes-Benz A B Class W169 W245 Door Control Module Left Rear N/S A1698208526

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1310208

Ford Transit Mk7 AUX Connector Adapter Port Socket 3S7T-19A164-AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9367673

Mini Cooper F55 F56 F57 Visual Boost Surround Central Cover Instrument 9367673

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8585379

ECU BMW F30 330d N57N 258HP Diesel Engine Control Unit Automatic 8585379

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0959593H

Audi A4 S4 B9 Front Door Control Module Unit Driver's Side 8W0959593H

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1669002700

Parking Brake Module Mercedes W176 W166 Electric Control Unit A1669002700

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8U0907468AQ

Audi A1 8X Central Gateway Control Unit Module Relay ECU 8U0907468AQ

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6886187

Airbag Module BMW F20 F21 F30 F31 F32 ECU ICM Plus Control Unit Air Bag 6886187

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9247386

BMW X3 F25 Body Control Module ECU Junction Box JBBFE III V9 Lear 9247386

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6963014

BMW E60 E61 E63 Passenger Side Door Air Module Control Unit ECU 6963014

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2219000804

Parking Module Mercedes W221 W216 Sensor PDC Distance Control Unit A2219000804

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009006706

Mercedes W205 Adblue Module Exhaust Gas Control Unit ECU BlueTEC SCR A0009006706

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7361970

BMW F10 F10 LCI Trunk Function Module Tailgate Boot Control Unit ECU 7361970

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4209003305

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit Module A4209003305

€222.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9186655

BMW 3 Series E92 Front Right O/S Driver Side Door Wire Wiring Loom 9186655

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9243645

Battery Cable BMW X3 F25 Wire Lead Positive Alternator Starter B+ 9243645

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6395400150

Mercedes Vito W639 Battery Terminal Fuse Box Control Unit Module A6395400150

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7476046

BMW F20 F21 F30 F31 Mini F55 F56 F57 Fuel Pump Module Control Unit ECU 7476046

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8P0907063N

Audi A3 8P Body Control Comfort Unit Module BCM Unit ECU 8P0907063N

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8519668

BMW E90 E91 LCI 320d N47N 184HP Engine Control Unit ECU DDE 8519668 Manual

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2038000178

Mercedes-Benz C CLK Class W203 C209 Vacuum Solenoid Valve A2038000178

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6911922

BMW Z4 E85 E86 Interior Fuse Power Distribution Box 6911922 8384629

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F1971687S

Audi A6 C6 Rear Door Wiring Left Right N/O/S Harness Loom Cable 4F1971687S

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1765401602

Mercedes W176 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1765401602

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9315682

Body Control Module BMW F20 F21 F30 F31 F32 Comfort Unit FEM ECU LR01 9315682

€104.95

Free delivery: Aug 10 – 11

If paid before 14:00

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