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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Telematics Module BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Unit 9342881

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7259883

Stop Lamp Cover BMW F30 F80 M3 Rear Third Stop Brake Lamp Trim 7259883

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0009827008

Mercedes W204 W212 W222 Auxiliary Additional Generator Battery A0009827008

€47.95

Free delivery: Sep 15 – 21

If paid before 14:00

Part no. 7604782-1

MINI Cooper S R55 R56 LCI R60 Alternator Generator 150A Petrol 7604782

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9875929

BMW F20 F21 F22 F23 LCI DAB Navigation Head Control Unit Module Business 9875929

€170.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A6397600604

Mercedes-Benz Vito W639 Front Left Door N/S Lock Bowden Pull Cable A6397600604

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6864927

BMW F01 F02 LCI F06 F10 F11 F13 ECU ICM Control Unit Air Module 6864927

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8570676

BMW F30 F32 LCI N57N N57Z Diesel Engine Alternator Generator 230A Valeo 8570675

€51.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9296494-1

BMW F20 F21 F22 F30 F31 F32 Control Unit Airbag Ecu 9296494

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9157156

Body Gateway Module BMW E60 E61 LCI E63 E64 ECU Control Unit 9157156

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7394466

BMW F10 F11 X5 F15 LCI F32 F33 Adblue Module Control Unit ECU SCR 7394466

€75.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9382417

BMW 1 2 3 5 F10 F20 F23 F30 Bluetooth Teleservices GPS Telematics Module 9382417

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9809381

Mini Cooper R60 Countryman High PL3 SPEG H6 Fuse Distribution Box 9809381

€170.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1715409245

Mercedes SLK R171 Gateway Control Unit Gateway Module ECU A1715409245

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6955925

BMW X5 E53 X3 E83 Control Unit Sliding Lifting Roof Panorama 6955925

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2038270642

Mercedes-Benz CLC-Class CL203 Antenna Amplifier Rear Right O/S A2038270642

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4F0035110A

Audi A6 C6 CD Player Changer Multimedia Module Control Unit 4F0035110A

€47.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9210863

BMW X3 F25 Fuse Box Power Distribution Module Relay Unit 9210863

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9290013

BMW X3 F25 Footwell Light Control Unit Module ECU FRM III TEMIC 9290013

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8K0959655G

Audi A4 B8 Air Module ECU Control Unit Crash Sensor 8K0959655G

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5Q0959655L

Audi A3 8V Air Module Control Sensor ECU Unit 5Q0959655L

€85.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7849627

BMW F80 M3 F82 M4 Engine Valvetronic Wiring Cable Loom Harness 7849627

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8Y0035465A

Audi Q2 GA Harman Speaker Amplifier Booster Sound System 8Y0035465A

€85.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2045452647

Mercedes W204 Aerial Antenna Control Unit Bracket Holder Mount A2045452647

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2469067100

Mercedes W176 W246 C117 Fuse Relay Box Control Unit Module A2469067100

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2189005607

Radio Head Unit Mercedes W207 W212 COMAND Navi CD Player Navigation A2189005607

€237.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2139008530

Mercedes W213 W447 Transmission Gearbox Control Unit Module ECU A2139008530

€42.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9326010

Radio Player BMW F20 F21 F30 F31 CD DAB Bluetooth Head Unit Audio Player 9326010

€70.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9384222

Body Module BMW X3 F25 X4 F26 Control Unit Junction Box JBBFE 3 9384222

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6906600-1

BMW Mini Cooper R50 R52 R53 JCW Fuse Box Housing 6906600

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129006012

Fuse Box Mercedes W204 W212 SAM Relay Control Unit Module A2129006012

€89.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5Q0907530AF

Volkswagen Seat Skoda Audi Gateway Control Unit Module ECU 5Q0907530AF

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2229009211

Mercedes W207 A207 W212 Digital Satellite Radio Control Unit A2229009211

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 3415414

BMW Mini Cooper One R56 Aerial Antenna Amplifier Diversity Module 3415414

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7239175

BMW 3 Series F30 F80 M3 Battery Cover Trunk Trim Panel Right Boot 7239175

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0061516201

Starter Motor Mercedes Sprinter W204 W211 W212 OM646 Diesel Engine A0061516201

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7634058

BMW F20 F30 Engine Automatic Gearbox Module Wiring Cable Loom Harness 7634058

€42.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1718204226

Mercedes R171 Convertible Roof Top Control Unit Module ECU A1718204226

€66.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9365837

BMW F20 F21 F22 F30 F31 Head Unit Basic Media Headunit 9365837

€218.95

Free delivery: Sep 11 – 14

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Part no. 9237655-2

BMW E60 E61 E81 E87 E90 F10 Audio Aux In Socket Plug 9237655

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6824386

Fuse Box Unit BMW F20 F22 F30 F32 Module ECU Control FEM 6824386

€89.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2079010100

Air Module Mercedes W207 C207 Coupe Control Unit ECU A2079010100 5WK43967

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8T0035223AB

Audi A4 B8 8K A5 8T Sound System Audio Amplifier Amp Unit 8T0035223AB

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9212232

BMW F20 F22 F30 F31 AC Air Conditioning Pipe Hose Diesel 9212232

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9283529

Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9283529

€56.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7514610

Injection Valve Wiring BMW E60 E61 E65 N62 N62N Ignition Loom Harness 7514610

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6857701

BMW 1 2 3 F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6857701

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7542310-7

Mini Cooper R50 W10 Petrol Engine Control Unit Module ECU DME 7542310 Manual

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7428425

LED Module BMW F20 F21 LCI Headlight Front Lamp Headlamp 7428425

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7618677

Battery Lead Cable BMW E81 E84 E87 RR1 RR2 RR3 Negative IBS 7618677

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7488140

BMW F10 F20 F21 F30 F31 LCI SCR Control Module ECU Unit 7488140

€42.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6906070

BMW X5 E53 Roof Antenna Amplifier Trap Circuit 6906070

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9301308

BMW F20 F21 F22 F30 Control Unit Air Conditioning System 9301308

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2048200189

Mercedes-Benz C E Class W204 W207 Aerial Antenna Amplifier Unit A2048200189

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8P0919283D

Audi A3 8P PDC Parking Distance Control Sensor Module Unit ECU 8P0919283D

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1728200815

Mercedes W204 C207 Centre Console Aux Port Socket Plug Terminal A1728200815

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9284976

BMW F13 F12 F06 Dashboard Display Central Information Display Monitor 9284976

€56.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9276036

BMW 5 Series F11 Touring Antenna Aeral Amplifier Diversity 868 MHZ 9276036

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9494391

BMW F20 F21 F22 F30 F44 F45 F46 Fuel Pump ECU Module Control Unit 9494391

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2465400335

Mercedes W176 W246 Negative Earth Cable Battery Terminal Wiring A2465400335

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9253636

Air Module BMW F10 F11 F13 X3 F25 ECU Control Unit Controller 9253636

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7286050

BMW F20 Control Unit Module Wing Mirror Power Fold 7286050

€66.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8V0907159

Audi A3 RS3 8V Impact Sound Actuator Body Control Unit Module ECU 8V0907159

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6966925

BMW E60 E90 Dashboard Onboard Monitor Display Screen 8.8" 6966925

€75.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4H0907658

Audi A3 8V A5 8T A6 A7 Air Quality Sensor Control Unit 4H09076588

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2469068601

Battery Junction Block Mercedes W176 W246 Battery Plus Pole Terminal A2469068601

€161.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4H0906093D

Fuel Pump Audi A8 D4 Q7 4L Diesel Control Unit Module 4H0906093D

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9361145

Mini Cooper One R55 R56 R57 LCI R58 R59 CHAMP 2 Navigation 9361145

€142.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6950093

BMW X5 Series E70 Flat Cable Wiring Wire CAS Start Stop 6950093

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9329704

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9329704

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9281717

BMW X5 F15 Camera Kafas Front Windscreen Camera 9281717

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8E0959655G

Air Module Audi A4 B6 B7 ECU Control Unit Crash Sensor Air 8E0959655G

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9322532

Gateway Module BMW F01 F10 F11 F12 Central Body Control 9244262

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6924389

BMW Z4 Series E85 E86 Battery Positive Cable Fuse Box B Base 6924389

€25.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 02M911023N

Volkswagen Touran Engine Starter Motor 02M911023N

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0045429218

YAW Rate Sensor Mercedes W203 W209 R171 Accelerator Speed Module A0045429218

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1718205826

Mercedes SLK R171 Air Module Bag SRS Control Unit ECU A1718205826

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1775404007

Fuse Box Mercedes W177 Power Distribution Junction Relay Unit A1775404007

€67.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6912817

BMW E46 Z4 E85 E86 Antenna Amplifier Diversity 6912817

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. GX73-14B526-AC

Land Rover Discovery L550 Voltage Converter Control Module Unit GX73-14B526-AC

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0325453832

Module Mercedes W639 Automatic Transmission Control Module Unit A0325453832

€284.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8577241

BMW F30 F32 LCI 330d 335dX 430d 435dX Alternator Starter Cable B+ 8577241

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5Q4959393E

Skoda Octavia 5E Front Door Module Control Unit ECU Driver's Side 5Q4959393E

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8373946

BMW 3 Z4 Series E46 E85 E86 Cable Battery Negative

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6951079

BMW E60 525i 530i 545i Fuses Set Electrical Fuse 6951079 61146951079

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6938064

BMW E65 E66 E67 Amplifier Rear Window Antenna Amplifier Module 868MHZ

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8K0907637C

Yaw Sensor Audi A4 B8 A5 8T ESP Rotation Rate Unit Module 8K0907637C

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A4475401440

Mercedes Vito W447 Fuse Box Relay Control Unit Module A4475401440

€47.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8706502

BMW 1 3 4 Series F20 F21 F30 F31 Radio Remote Control Receiver 434 MHZ 8706502

€23.95

Free delivery: Sep 11 – 14

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Part no. 1489995

Mini Cooper R50 R52 R53 Starter Motor W10 1.6 Petrol Engine 1489995

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8065118

Differential Lock Module BMW F13 M6 F80 M3 Rear Axle Control Unit ECU 8065118

€47.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9271216

BMW X3 F25 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 9271216

€66.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A6397600204

Bowden Cable Mercedes W639 Door Handle Catch Top Rear Right O/S Wire A6397600204

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6778809-1

Mini Cooper One R55 R56 R57 Xenon Headlight Level Sensor 6778809

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9223682

BMW X5 X6 Series E70 E71 Dashboard Onboard Monitor Display Screen 8,8" 9223682

€132.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9808714

Mini Cooper One R56 R55 R58 R60 Airbag ECU Control Module Unit 9808714

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6986077

BMW E81 E87 E90 E91 E92 6-disc CD Changer Without Magazine 6986077

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7410612

BMW F34 GT Tailgate Lift Module Rear Boot Trunk Lid Control Unit ECU F005V01708

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7537612

BMW X5 E53 E60 E81 E87 E90 Engine Vacuum Control Electric Valve 7537612

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

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