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 F10 F20 F30 Camera Module Reversing Rear View Camera Control 9259354

€94.95

Free delivery: Sep 23 – 24

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Part no. 7641652-1

Engine Wiring BMW F10 F31 F32 N20 Engine Sensor Module 1 Harness 7641652

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 0AM911023J

Volkswagen Golf Mk7 VII Engine Starter Motor Assembly Unit 0AM911023J

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1472984-2

Mini R50 R52 R53 R55 R56 R57 R58 R59 R60 5-Pin Black Relay Wiper Set 1472984

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9153966

BMW E93 ECU Body Control Module H1 PL2 JBBFE 61359153966 9153966

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8S0963553D

Volkswagen Skoda Seat Audi Seat Pressure Sensor Front Passenger Side 8S0963553D

€23.95

Free delivery: Sep 23 – 24

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Part no. A2649000700-2

Mercedes W205 C 200 264915 264.915 184HP Engine ECU Module A2649000700 Automatic

€80.95

Free delivery: Sep 23 – 24

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Part no. A0025421419

Mercedes W163 W169 W203 W210 Relay 5-Pin Yellow TYCO A0025421419

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059007123

Mercedes W176 W212 W246 Telematics Communication Control Unit Module A2059007123

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9079000304

Mercedes Sprinter W907 W910 Air Module Sensor Unit ECU A9079000304

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469000709

Mercedes W246 Air Module Control Unit ECU Module A2469000709

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8593105

BMW G30 G11 G14 Diesel B57 Wiring Glow Plugs Module Wiring Harness 8593105

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6964140

BMW 7 Series E65 E66 Control Unit Door Rear Passenger Side 6933264

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9237085

BMW F10 F11 Cable Loom Door Passenger Side Wiring Harness 9240882

€23.95

Free delivery: Sep 23 – 24

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Part no. A4159064900-1

Mercedes Citan W415 Alternator Generator OM607 Diesel Engine 150A 14V 231000026R

€66.95

Free delivery: Sep 23 – 24

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Part no. 6805061

BMW F45 F46 Mini F55 F56 F57 Parking Assistant PDC Control Unit Module 6805061

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9362445

BMW F20 F21 F22 Audio Amplifier Harman Kardon Active Sound Design Unit 9362445

€104.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 7939175

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

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0061514501

Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501

€32.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. A1638200089

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 02Z911024H

Volkswagen Passat B7 Starter Motor Actuator TDI Diesel Engine 02Z911024H

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9079003303

Mercedes W907 Front Radar Distance Control Unit Module A9079003303

€132.95

Free delivery: Sep 23 – 24

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 23 – 24

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Part no. A2139001722

Mercedes W213 W907 Transmission Gearbox Control Unit Module ECU A2139001722

€32.95

Free delivery: Sep 23 – 24

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 23 – 24

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 22 – 24

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 23 – 24

If paid before 14:00

Part no. A9065410740

Mercedes Sprinter W906 Battery Cover Frame Bracket Mount Holder A9065410740

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

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Part no. A2465411005

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

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. A6421509777-1

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

€265.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5WA907007AC

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

€113.95

Free delivery: Sep 23 – 24

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 23 – 24

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Part no. LR015500

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

€47.95

Free delivery: Sep 23 – 24

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Part no. 3C8971694AN

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

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8611289

Mini Cooper S R56 JCW Coolant Thermostat Adapter Wiring Cable 8611289

€28.95

Free delivery: Sep 23 – 24

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Part no. 6940624

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

€23.95

Free delivery: Sep 23 – 24

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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 23 – 24

If paid before 14:00

Part no. 7638005

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. A2469000516

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

€94.95

Free delivery: Sep 23 – 24

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 23 – 24

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 23 – 24

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 23 – 24

If paid before 14:00

Part no. 6960308

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 03L911024B

Audi A6 C7 2.0 TDI CGLC Diesel Starter Motor 03L911024B

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

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 23 – 24

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 23 – 24

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 23 – 24

If paid before 14:00

Part no. 9365054

BMW F30 Wiring Harness Loom Rear Trunk Lid Boot Tailgate 9365054

€32.95

Free delivery: Sep 23 – 24

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 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. A6395407009

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2044404732

Mercedes W204 Estate PDC Wiring Rear Bumper Parking Sensor Cable A2044404732

€32.95

Free delivery: Sep 23 – 24

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 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 9127088

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

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

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 23 – 24

If paid before 14:00

Part no. A2048700185

Mercedes W204 Bluetooth Control Unit Module Media Interface ECU A2048700185

€51.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 9148264

Seat Module BMW E87 E90 E91 E92 Control Unit ECU 9148264

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9069820109

Mercedes Sprinter W906 Positive Battery Terminal Cover Cap Trim Red A9069820109

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 9316569

BMW X5 F15 Fuse Box Rear Relay Module Control Unit 9316569

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

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 23 – 24

If paid before 14:00

Part no. 9384687

BMW F46 KaFAS Camera Front Windscreen Parking Camera Module Unit 9384687

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6951674

BMW E81 E87 E90 PDC Parking Sensor Ultrasonic Sparkling Graphite A22

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 9314023

MINI Cooper R56 LCI Aerial Antenna Amplifier Diversity Module 9314023

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0907530K

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

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 9207075

BMW X3 X5 Series E83 E53 Telematics Control Unit Module 9207075

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0910110L

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

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 3456365

Roof Security Alarm Mini R55 R56 One Ultra Sonic Module 3456365

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 6956166

Mini Cooper One R50 R53 Loudspeaker Rear 65136956166 6956166

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

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 23 – 24

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Part no. 443937105A

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1776203400

Mercedes W177 W247 Battery Bracket Mount Holder Support A1776265300

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

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 23 – 24

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 23 – 24

If paid before 14:00

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