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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Ford Transit Custom Engine Starter Motor 2.0 EcoBlue GK2T-11000-BC

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. 6864206

Air Module BMW F20 F21 F30 F31 F32 ECU ICM Plus Control Unit 6864206

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9346566

BMW F45 F46 X1 F48 X2 F39 Negative Battery Cable Terminal Wiring 9346566

PLN 89.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T0919611-1

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

PLN 237.95

Free delivery: Jul 16 – 17

If paid before 14:00

Part no. 8662843-1

Mini Cooper F55 B38 136HP Engine Module ECU DME Kit 8662843 Manual

PLN 2,849.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0955557C

Audi A4 B8 Crash Impact Sensor Unit Air Module 8K0955557C

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 9232527

BMW F10 F11 Rear Bumper PDC Wiring Loom Cable Harness 9232527

PLN 161.95

Free delivery: Jul 16

If paid before 14:00

Part no. 6943585

BMW E65 E66 E67 Control Electronics Seat Occupancy 6943585

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. A1635400534

Mercedes-Benz M ML W163 Front Left Right Door Wiring Loom Harness A1635400534

PLN 47.95

Delivery: Jul 16

If paid before 14:00

Part no. 04L906021BQ

Audi A4 B8 Engine Control Unit Module ECU 2.0 TDI CNHC 163HP 04L906021BQ

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. A0009006302

Mercedes W176 Automatic Gearbox Transmission Module Control Unit ECU A0009006302

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 6C0915423

Volkswagen Polo 6R Mk5 Battery Terminal Overload Protection Fuse 6C0915423

PLN 170.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9878329

BMW U06 X1 U11 Front Subwoofer Speaker Bass Low Tone Left N/S 9878329

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2519062200-1

Mercedes W251 COMAND Navigation Head Unit Radio Sat Nav Screen A2519062200

PLN 1,424.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9231442

BMW 2 3 4 Series F22 F30 F32 F36 Antenna Suppression Filter Aerial 9231442

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 8650701-1

BMW F80 M3 F82 F83 M4 S55 431HP Engine Module ECU DME Kit 8650701 Automatic

PLN 4,749.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8583423-3

Mini R60 Cooper SD N47N 2.0 143HP Engine ECU Kit DDE 8583423 CAS3 Key Manual

PLN 854.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7P6971161FL

VW Touareg 7P Door Wiring Loom Harness Cable Front Passenger Side 7P6971161ES

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2129063001-1

Radio Head Unit Mercedes W212 Command Navi CD DVD Player Navigation A2129063001m

PLN 360.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9367679

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

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. FK72-13A444-ABC

Land Rover Discovery Sport L550 Rear Seat Folding Wiring Cable FK72-13A444-ABC

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8U0945093N-2

Audi Q3 8U Facelift Rear Tail Light Lamp Left N/S Cable Harness Wire 8U0945093N

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 8506657

BMW X3 F25 Starter Motor Diesel Engine 12V Bosch 8506657

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7810860-1

BMW 3 Series E90 E91 E92 E93 LCI N47N Engine Alternator Starter Cable B 7810860

PLN 47.95

Delivery: Jul 16

If paid before 14:00

Part no. 079971627R

Audi RS4 B8 RS5 8T Injector Wiring Loom Harness 4.2 V8 FSI Petrol 079971627R

PLN 156.95

Free delivery: Jul 16

If paid before 14:00

Part no. H1BT-18C815-VN

Ford Fiesta MK8 Radio Head Unit Sat Nav Module H1BT-18C815-VN

PLN 151.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8509105

BMW E90 E91 E92 LCI N47N Cable Alternator Starter Base B+ 8509105

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. DPLA-12C520-NAC

Range Rover L405 448DT 340HP Engine Control Unit ECU DPLA-12C520-NAC Automatic

PLN 759.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9315152

BMW X3 F25 Fuse Box Grouping Map Diagram Location 9315152

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 5N0035341C

Volkswagen Scirocco Mk3 Multimedia Interface Module Box 5N0035341C 5N0035342B

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8589168

Alternator Harness BMW X3 G01 X4 G02 30dX 40dX B57 Cable Base B+ Loom 8589168

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W6971036G

Audi A4 B9 A5 F5 Front Door Wiring Harness Cable Passenger Side 8W6971036D

PLN 180.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K5035570

Audi A4 B8 Aerial Antenna Disturbance Suppressor 8K5035570

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 5M5T-14B192-BA

Land Rover Discovery 4 L319 Multi Use Control Module Relay 5M5T-14B192-BA Black

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 420971235

Audi R8 42 Battery Minus Negative Wiring Loom Harness Cable 420971235

PLN 199.95

Free delivery: Jul 16

If paid before 14:00

Part no. 6834171

BMW G30 G31 Seat Wire Harness Cable Loom Front Left N/S 6834169 6834171

PLN 712.95

Free delivery: Jul 16

If paid before 14:00

Part no. GX73-12C520-FAF

Land Rover Discovery L550 2.0 204DT 180HP 4x4 Engine ECU GX73-12C520-FAF Manual

PLN 379.95

Free delivery: Jul 16

If paid before 14:00

Part no. 6970086

BMW 5 6 Series E60 E61 E63 LCI Cable Set Start / Stop Switch Wiring Loom 6970087

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 9264973-1

BMW X5 E70 Seat Control Unit Module ECU 9264973

PLN 332.95

Free delivery: Jul 16

If paid before 14:00

Part no. YML500373

Land Rover Discovery 3 L319 Front Seat Memory Wiring Harness YML500373

PLN 113.95

Free delivery: Jul 16

If paid before 14:00

Part no. 95861212230

Porsche Cayenne 92A Starter Alternator Wiring Harness Cable 7P6972127

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8V0863051

Audi A3 8V AMP Amplifier Under Seat Cover Trim Panel Unit 8V0863051

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 9270365

BMW F20 F21 F30 F31 F32 Radio Professional CD DAB Head Unit 9299268

PLN 664.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7601799

Earth Ground Cable BMW X3 F25 Battery Cable Engine Wiring 7601799

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. A1669006105

Door Module Mercedes W176 W246 Front Right O/S Control Unit A1669006105

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8574091-6

BMW F10 F11 520d N47N 184HP Engine ECU Kit Unit DDE 8574091 CAS4 + Key Manual

PLN 712.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5N0035342E-1

VW Volkswagen Polo 6R Multimedia Control Interface Bracket Retainer 5N0035342E

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 9199996

Holder BMW F13 TV Video Switch Control Module Unit Bracket Mount 9199996

PLN 47.95

Delivery: Jul 16

If paid before 14:00

Part no. 284B68764R

Mercedes W415 Fuse Box Relay Control Unit Module 284B68764R

PLN 664.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4F0959792B

Audi A6 C6 Front Door Control Module Unit ECU Passenger's Side 4F0959792B

PLN 66.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9197002

BMW X5 Z4 E70 E89 HiFi Stereo Audio Sound System Amplifier 9197002

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2198200726

Door Module Mercedes C219 Front Right Door O/S Control Unit Module A2198200726

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W0937503B

Audi A4 B9 A5 F5 A6 C8 Fuse Relay Box Power Distribution 8W0937503B

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. A2048705490

Mercedes-Benz C W204 Digital Audio DAB Receiver Control Unit Module A2048705490

PLN 332.95

Free delivery: Jul 16

If paid before 14:00

Part no. 03L903023

Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7638005

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

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. A0009000346

Mercedes W177 Engine Alternator Generator M282 A0009000346

PLN 2,004.95

Free delivery: Jul 16

If paid before 14:00

Part no. 2GA971395A

VW Volkswagen T-ROC A11 Front Door Ambiente Light Wiring Right O/S 2GA971395A

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. JU5T-17D547

Ford Ranger Mk3 Windscreen Rain Sensor Module Control Unit JU5T-17D547

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8W6945093L-1

Audi A5 S5 F5 LED Tail Light Lamp Wire Harness Wiring Cable Left N/S 8W6945093L

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4G8971030CS

Audi A7 4G Front Door Wiring Loom Harness Passenger Side 4G8971030CS

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. DPLA-70718-NZ

Land Rover Discovery Sport L550 Telematics Control Module Unit DPLA-70718-NZ

PLN 427.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2125404600

Mercedes W212 AMG Front Bumper Parking Sensor PDC Wiring Harness A2125404600

PLN 332.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8689723-3

BMW F20 M140i B58 340 HP ECU DDE Key Kit Petrol 8689723 6843898 Automatic

PLN 2,374.95

Free delivery: Jul 16

If paid before 14:00

Part no. A1648200485

Mercedes ML W164 Door Module Front Right O/S Control Unit ECU A1648200485

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4F5945095L-2

Audi A6 C6 Saloon Rear Tailgate Trunk Lid Light Lamp Wiring Left N/S 4F5945095L

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 4K0035502B

Audi A5 F5 A6 C8 Wireless Centre Console Phone Charging Module Unit 4K0035502B

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. DS7T-19C107-FH

Ford Mondeo MK5 Radio CD Player Head Unit DS7T-19C107-FH 2360230

PLN 379.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7638322-2

Mini One R56 LCI N16 98HP Engine ECU Kit DME 7638322 + CAS3 + Key Automatic

PLN 1,519.95

Free delivery: Jul 16

If paid before 14:00

Part no. A0009822223

Mercedes W906 SAM Module Fuse Box Relay Control Unit Regulator A0009822223

PLN 379.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8519009-3

BMW X1 E84 20dX Diesel N47N 184HP Engine Control Unit ECU DDE 8519009 Automatic

PLN 379.95

Free delivery: Jul 16

If paid before 14:00

Part no. 7P0959655F

Porsche Cayenne 92A Air Module Control Module Unit ECU 7P0959655F

PLN 398.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9453978

BMW G20 G21 G30 G31 Communication Wiring Harness Loom 9453978

PLN 389.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8J0937503

Audi TTS 8J Fuse Relay Box Bracket Mount Frame 8J0937503

PLN 100.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9318579

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9318579

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8494948

BMW F40 F44 F48 Mini F54 Rear Tailgate Smart Opener Top Wire Sensor 8494948

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 04L903017

Audi A4 S4 8K A5 S5 8T 8F Alternator 150A 14V 2.0 TDI Diesel CGLC 04L903017

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T8971688S

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Right O/S 8T8971688S

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 0AD927755BE

VW Volkswagen Touareg 7L Transfer Box Control Unit Module ECU 0AD927755BE

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. CPLA-19G490-AE

Range Rover L405 Camera Module Rear View Parking Camera Unit CPLA-19G490-AE

PLN 522.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4K0915181F

Audi A6 C8 50 TFSIe Hybrid Negative Battery Wiring Terminal Monitor 4K0915181F

PLN 664.95

Free delivery: Jul 16

If paid before 14:00

Part no. LR028237

Range Rover Evoque L538 Occupancy Sensor Mat Front Pasenger Seat 8X23-14C288-AB

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9137800

Mini Cooper One R55 R56 R57 Passenger's Door Harness Wiring Cables N/S 9137800

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 5F0945308K-2

Seat Leon Mk3 Cupra Rear Tail Light Lamp LED Wiring Inner Right O/S 5F0945308K

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 8513249-1

BMW X3 F25 Engine ECU Kit DDE CAS4 N47N 20dX 184HP Manual 8513249 Keys + Lock

PLN 949.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2059065005-2

Mercedes S205 Estate Rear Lamp Inner Wiring Harness Cable Left N/S A2059065005

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 9167202

BMW E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9167202

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. A2229003619

Mercedes W205 W213 W222 Radio Sat Nav Head Unit A2229003619

PLN 2,089.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9393144

BMW G11 G30 Fuse Box Power Distribution Electrical Control Unit Box Rear 9393144

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4G1919129

Audi A1 8X A4 B8 A6 C7 A7 4G TV Tuner Module Control Unit 4G1919129

PLN 332.95

Free delivery: Jul 16

If paid before 14:00

Part no. 9294912-2

BMW F10 X5 F15 Rear Seat Compartment Screen Display 9,2" Surround Trim 9294912

PLN 113.95

Free delivery: Jul 16

If paid before 14:00

Part no. A2469002603

Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5A2D553

Audio Receiver BMW F40 G22 G30 G31 X3 G01 DAB ECE Control Unit Module 5A2D553

PLN 759.95

Free delivery: Jul 16

If paid before 14:00

Part no. AH42-14N030-AE

Land Rover Range Rover L322 Rear Fuse Relay Box AH42-14N030-AE

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8576333-8

BMW F20 F30 F32 xDrive N47N 163HP Engine Control ECU Kit DDE 8576333 Manual

PLN 712.95

Free delivery: Jul 16

If paid before 14:00

Part no. A6519007500-13

Mercedes W212 E250 CDI 651.924 204HP Engine Unit ECU Kit A6519007500 Key Lock

PLN 1,139.95

Free delivery: Jul 16

If paid before 14:00

Part no. A1775405101

Door Wiring Mercedes V177 Rear Door Right Left N/O/S Harness Wire A1775405101

PLN 66.95

Free delivery: Jul 16

If paid before 14:00

Part no. 1J0919506M

Volkswagen Skoda Seat Audi Radiator Cooling Fan Relay Control Unit 1J0919506M

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 99661263403

Porsche Boxster 986 Door Wire Wiring Loom Driver's Door 99661263403

PLN 284.95

Free delivery: Jul 16

If paid before 14:00

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