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 Mini R55 R56 R57 Cabrio Adapter Lead Outside Temperature Sensor 9126106

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1179009200

Mercedes W176 Air Module Belts System Control Unit ECU Bosch A1179009200

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7792130

BMW Mini Cooper One R50 R52 R53 R55 R56 R57 Earth Ground Cable 7792130

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9234424

BMW F10 F11 Fuse Box Power Distribution Control Unit Box Rear 9234424

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2115452601

Mercedes ML W164 Prefuse Fuse Distribution Box Front A2115452601

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0951605B

Audi Seat Skoda Volkswagen Golf Mk8 Anti Theft Alarm Siren 5Q0951605B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0919283E

Parking Distance Audi A3 8V TT Mk3 Seat Leon MK3 Control Module 5Q0919283E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9247398

BMW F01 F10 F11 F12 Body Control Unit Module Gateway ZGW-01 9247398

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8507885

BMW 1 3 Series F20 F30 Diesel N47N Wiring Harness Engine Gearbox Module 8507885

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8U0955559B

Audi A5 8T Windscreen Rain Sensor Control Unit 8U0955559B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9383176

BMW F20 F30 F34 BCM FEM BSI Body Control Module Unit 9383176

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049060105

Mercedes W204 SAM Control Unit Module Fuse Box Relay Rear A2049060105

€62.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9171925

BMW E88 Convertible Air Module Sensor ECU Control Unit Module 9171925

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9341546

BMW F40 G20 G30 Accelerating Sensor 9341546

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9200822

BMW E60 E81 E90 E91 Hands-Free Bluetooth Module High MULF2 9200822

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009820012

Mercedes W176 W212 W246 Voltage Converter Power Distributor Inverter

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9240943

Mini Cooper R55 R56 LCI R60 Electrical System Fuse Distribution Box 9240943

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7549393

Negative Cable BMW E81 X1 E84 E87 E90 E91 E92 E93 Ground Earth Battery 7549393

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 9177983

BMW E87 LCI Body Control Module Junction Box H2 9177983

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9184432-1

BMW 1 3 Series E81 E87 E90 E91 Control Unit Airbag ECU NO CRASH DATA 9184432

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3405141

BMW X3 Series E83 E83N LCI Support Bracket Navigation Computer 3405141

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9367672

Mini F55 F56 F57 Central Cover Information Instrument Radio 9367672

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2045402610

Mercedes W204 Cable Harness Rear Door Panel Card Wiring Loom A2045402610

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1J6035111

VW Volkswagen Touareg 7L Golf 4 CD Changer 1J6035111

€32.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A2129009505

Mercedes W212 PDC Parking Distance Control Unit Module Sensor A2129009505

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8507912

BMW F30 F31 Engine Wiring Loom N47N Harness Automatic Gearbox 7549282

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1679004712

Bluetooth Module Mercedes W205 W213 W222 W238 Control Unit ECU A1679004712

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048204697

Mercedes W204 Dashboard Dash Navigation Central Display Screen Monitor

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129004502

Mercedes W204 W207 Front Right Door Control Unit Module A2129004502

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6913896

BMW Z4 E85 E86 Aerial Antenna Amplifier Module Rod 6913896

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9365764

Head Unit BMW F10 F20 F22 F30 Navigation Sat Nav High Control Module 9365764

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049009004

Parking Module Mercedes W204 S204 PDC Distance Control Unit Sensor A2049009004

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2125400382

Mercedes W212 Cover Fuse Box Trim Panel Lid A2125400382

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9350995

BMW F10 F20 F30 Reversing Camera Rear View Control Unit 9350995

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1669000318

Mercedes-Benz A B Class W176 W246 Front Left N/S Door Control Unit Module ECU

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0907063C

Audi S5 8T Body Comfort Control BCM Supply Module Unit ECU 8K0907063C

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0061511001

Starter Motor Mercedes W906 M272 Engine Diesel Bosch A0061511001

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9236519

BMW 1 Series E81 E87 LCI Front PDC Parking Distance Control Loom Wiring 9236519

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8P0035186S

Audi A3 8P Multimedia Concert Radio CD Player Head Unit 8P0035186S

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9267419

BMW E90 LCI Body Control Module H1 61359267419 9267419

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9165623

BMW X5 X6 Series E70 E71 Airbag Control ECU Unit Module 9165623

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2465401950

Battery Base Mercedes C117 W176 W246 Power Fuse Relay Box A2465401950

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8574095

BMW F20 F21 F30 F31 116d 316d 118d 318d Diesel N47N Engine ECU 8574095 Manual

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6399003000

Door Module Mercedes Vito W639 Front Right O/S Control Unit ECU A6399003000

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9343259

B+ Distribution Box BMW X3 F25 Battery Power Red Rear Control Unit 9206140

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9387453

Display Screen BMW F30 F31 F32 F33 On-board Navigation Monitor 8,8" 9387453

€284.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3449504

Mini Cooper One R55 R56 Electrical System Fuse Distribution Box 3449504

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E0035111D

Audi TT 8J Radio Head Unit Navi CD DVD Player Changer 8E0035111D

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9374510

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9374510

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2079011700

Airbag Module Mercedes W204 W207 Air Bag SRS Control Unit ECU A2079011700

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6988965

BMW E81 E87 E90 LCI PDC Parking Ultrasonic Sensor Spacegrau 6988965

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8733503

BMW F30 Fuse Box Front Body Control Module ECU BCM Unit 8733503

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2469000012

Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9399427

Radio Head BMW F20 F21 F22 F30 F31 Unit Basic Media Navigation Headunit 9399427

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0025421319-1

Mercedes W204 Genuine Universal Car Relay 4-Pin Hella Black A0025421319

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049006003

Radio Player Mercedes W204 Audio 20 Navi CD Player Head Unit A2049006003

€218.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7520933

Mini Cooper One W10 R52 Wiring Harness Loom Engine 7520933 7531839 7514274

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1698705894

Mercedes W169 W245 CD Player Radio Stereo Head Unit A1698705894

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. E87-E90-PLUG-SOCKET-LOOM-PDC

BMW E81 E82 E87 E88 E90 E91 E92 Plug Socket Loom PDC Parking Sensor

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7851568

BMW F80 M3 F82 M4 Actuator Drive Exhaust Flap 7851568

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8578609

BMW F20 F21 F30 F31 Diesel Alternator Generator 180A 8578608 8578609

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6931687

BMW X5 E70 X6 E71 Fuse Box Power Distribution Electrical Unit Rear 6931687

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1648702726-1

Mercedes W164 Boot Trunk Lid Tailgate Control Unit Module ECU A1648702726

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0959792H

Door Control Module Audi S4 A4 B8 A5 8T Front Right O/S Passenger 8K0959792H

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129006518

Door Module Mercedes W204 W207 W212 Front Right O/S Control Unit A2129006518

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7263052

LCI Control Unit BMW X5 E70 E92 E93 Daytime Driving Lights 7263052

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2465400308

Alternator Cable Mercedes W176 W246 OM651 Battery Prefuse Box A2465400308

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06A903143P

Audi TT 8N Alternator Bracket Mount Holder 06A903143P

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5K0959655

Volkswagen VW Golf Mk6 5K Air Module Control Unit ECU 5K0959655

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7160897-1

BMW E53 E60 E65 E81 E87 E90 E91 Bulb Holder Turn Indicator 7160897

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2465402610

Mercedes-Benz A B W176 W246 160 180 CDI Alternator Cable Loom Wire A2465402610

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9266350

BMW F01 F02 HiFi System Amplifier Harman Becker Audio Booster 9266350

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8573779-1

BMW F30 330dX 258HP N57N Control Unit Module ECU DDE 8573779 Key FEM Automatic

€308.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8P3035223B

Audi S3 8P Audio Sound System Amplifier Bose 290328

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0915459

Audi A4 B8 A5 8T TT MK2 Positive Battery Terminal Cable Overload Fuse 8J0915459

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6820234

Air Conditioning Module BMW F20 F21 F30 F31 A/C Control Unit 6820234

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6519065700

Mercedes W907 314 CDI Engine Alternator Generator Valeo A6519065700

€161.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9075409482

Fuse Box Mercedes Sprinter W907 Prefuse Box Module Relay Holder A9075409482

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8512499-1

BMW E81 E87 E90 E91 LCI N47 143HP Diesel ECU Kit DDE 8512499 Manual

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6970675

BMW X5 E70 Front Bumper PDC Wiring Loom Cable Harness 6970675

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8577839-1

BMW F32 F33 430d N57N 258HP Engine ECU DDE Kit 8577839 FEM + Key Automatic

€180.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5WA937125A

Volkswagen Golf Mk8 Audi S3 8Y Skoda Octavia MK4 VRS Fuse Relay Box 5WA937125A

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9131850

CD Changer BMW E60 E61 E63 6-DISC Compact without Magazine 9131850

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6943585

BMW E65 E66 E67 Control Electronics Seat Occupancy 6943585

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9317872

BMW F20 F21 F22 F30 F31 Alpine CD Champ 2 Radio Player Head Unit 9323784

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129003508

Mercedes W207 W906 Fuel Pump Control Unit Module ECU A2129003508

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6917544

Mini Cooper R50 R53 Rear PDC Ultrasonic Parking Sensor Pepper White - 850

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9329700

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9329700

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1569007702

Signal Actuation Module Mercedes W176 W246 SAM Control Unit ECU A1569007702

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009002126

AdBlue SCR Module Mercedes W907 W910 W447 Exhaust Gas Cleaning A0009002126

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06J903023H

Volkswagen Golf Mk7 5G Alternator Generator 2.0 TFSI CHHA 06J903023H

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6864208

BMW F20 F21 F22 F30 F31 Air Module ECU ICM Control Unit 6864208

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0803219C

Battery Clamp VW Golf 8 CD1 Audi A3 8Y Battery Base Bracket Holder 5Q0803219C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6512012009

Alternator Support Bracket Mercedes W212 OM651 Belt Tensioner Holder A6512012009

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6395450203

Mercedes-Benz Vito W639 Fuse Box Cover Cap Trim A6395450203

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 04E907309AC-1

Audi A1 8X 1.4 TFSI CZCA 125HP Engine ECU Kit BCM Lock + Key 04E907309AC Manual

€161.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7237647

BMW E90 LCI F01 F10 F11 F20 F21 Control Unit Xenon Light 7237647

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

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