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

€222.95

Free delivery: Sep 14 – 15

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Part no. 02Z911024H

Volkswagen Passat B7 Starter Motor Actuator TDI Diesel Engine 02Z911024H

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9079003303

Mercedes W907 Front Radar Distance Control Unit Module A9079003303

€132.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. A2139001722

Mercedes W213 W907 Transmission Gearbox Control Unit Module ECU A2139001722

€32.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. CC1T-10300-BD

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

€94.95

Free delivery: Sep 11 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. A9065410740

Mercedes Sprinter W906 Battery Cover Frame Bracket Mount Holder A9065410740

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. A2465411005

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

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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Part no. A6421509777-1

Mercedes W221 S320 CDI 232HP Engine Control Module ECU Set A6421509777 Automatic

€265.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5WA907007AC

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

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L0959655A

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

€23.95

Free delivery: Sep 14 – 15

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Part no. LR015500

Land Rover DISCOVERY 4 L319 Rear Bumper Parking Sensor Wire Loom AH2215B484AC

€47.95

Free delivery: Sep 14 – 15

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Part no. 3C8971694AN

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

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8611289

Mini Cooper S R56 JCW Coolant Thermostat Adapter Wiring Cable 8611289

€28.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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Part no. 8507906

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

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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Part no. A2469000516

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

€94.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 9306220

Telematics Module BMW F10 F20 F30 F31 Bluetooth Teleservices GPS 9306220

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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Part no. 6960308

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 8515494

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L911024B

Audi A6 C7 2.0 TDI CGLC Diesel Starter Motor 03L911024B

€23.95

Free delivery: Sep 14 – 15

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Part no. 8507398

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

€23.95

Free delivery: Sep 14 – 15

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Part no. BJ32-10C652-AA

Range Rover Evoque L538 Negative Battery Cable Battery To Earth BJ3210C652AA

€23.95

Free delivery: Sep 14 – 15

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Part no. 4N0907064DD

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

€113.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. A0035423019

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9266838

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9365054

BMW F30 Wiring Harness Loom Rear Trunk Lid Boot Tailgate 9365054

€32.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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Part no. KK3T-15K868-DCC

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

€28.95

Free delivery: Sep 14 – 15

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Part no. 9124583-KAS

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

€23.95

Free delivery: Sep 14 – 15

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Part no. A6395407009

Mercedes W639 Wiring Harness Loom Front Door Exit Lights Left N/S A6395407009

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2044404732

Mercedes W204 Estate PDC Wiring Rear Bumper Parking Sensor Cable A2044404732

€32.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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Part no. 9280186

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 9251701

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 9127088

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7S71-15K601-ED

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T0915181

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2048700185

Mercedes W204 Bluetooth Control Unit Module Media Interface ECU A2048700185

€51.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 9148264

Seat Module BMW E87 E90 E91 E92 Control Unit ECU 9148264

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9069820109

Mercedes Sprinter W906 Positive Battery Terminal Cover Cap Trim Red A9069820109

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 9316569

BMW X5 F15 Fuse Box Rear Relay Module Control Unit 9316569

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 9384687

BMW F46 KaFAS Camera Front Windscreen Parking Camera Module Unit 9384687

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6951674

BMW E81 E87 E90 PDC Parking Sensor Ultrasonic Sparkling Graphite A22

€23.95

Free delivery: Sep 14 – 15

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Part no. 3457429

Mini Cooper R60 Footwell Light Module High EKS SZT ECU FRM3R PL3 Lear 3457429

€132.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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Part no. 6997612

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 9314023

MINI Cooper R56 LCI Aerial Antenna Amplifier Diversity Module 9314023

€23.95

Free delivery: Sep 14 – 15

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Part no. 7627023

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

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6953467

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9207075

BMW X3 X5 Series E83 E53 Telematics Control Unit Module 9207075

€80.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4E0910110L

Audi A6 C6 6-Disc CD Changer Magazine Head Unit MMI 6946989

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6820526

Head Unit BMW F20 F21 Radio Media GPS Sat Navigation Unit 6820526

€66.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 3456365

Roof Security Alarm Mini R55 R56 One Ultra Sonic Module 3456365

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 6956166

Mini Cooper One R50 R53 Loudspeaker Rear 65136956166 6956166

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9365780

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

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 04L907309AB-6

Volkswagen Caddy 2K 2.0 TDI DFSD 102HP Engine Control ECU 04L907309AB Manual

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 443937105A

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1776203400

Mercedes W177 W247 Battery Bracket Mount Holder Support A1776265300

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7PP959663E-1

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

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 9367679

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

€56.95

Free delivery: Sep 14 – 15

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Part no. 4F0959792E

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 5G0971104L

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

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2059001240

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

€32.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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Part no. 9170732

BMW X5 E70 CCC Navigation System CD Player Sat Nav Head Unit 9170732

€360.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5J0035411C

Skoda Fabia 5J Front Door Bass Loudspeaker Left Right N/O/S 5J0035411C

€23.95

Free delivery: Sep 14 – 15

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Part no. 9367673

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

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AV6T-14A067-BC

Ford Focus Mk3 III Fuse Box Battery Terminal Unit Module AV6T-14A067-BC

€23.95

Free delivery: Sep 14 – 15

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Part no. 8W0959593H

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

€23.95

Free delivery: Sep 14 – 15

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Part no. A9079003207

Mercedes W907 Air Suspension Level Control Unit Module Airmatic A9079003207

€118.95

Free delivery: Sep 14 – 15

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Part no. A1669002700

Parking Brake Module Mercedes W176 W166 Electric Control Unit A1669002700

€23.95

Free delivery: Sep 14 – 15

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Part no. 8U0907468AQ

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

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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Part no. 9247386

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

€28.95

Free delivery: Sep 14 – 15

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Part no. 6963014

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

€23.95

Free delivery: Sep 14 – 15

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Part no. A2219000804

Parking Module Mercedes W221 W216 Sensor PDC Distance Control Unit A2219000804

€23.95

Free delivery: Sep 14 – 15

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Part no. 8J0035456A

Antenna Amplifier Audi Q5 8R A6 C6 A5 8T Mobile Phone Module Unit 8J0035456A

€23.95

Free delivery: Sep 14 – 15

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Part no. A0009006706

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 7361970

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

€51.95

Free delivery: Sep 14 – 15

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Part no. A4209003305

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit Module A4209003305

€222.95

Free delivery: Sep 14 – 15

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Part no. 9186655

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

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