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.

More information

Find it faster

Match to your vehicle

Make

Porsche Cayenne 9PA Rear Door Treble Speaker Audio Unit Left N/S 7E0035411B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6951674-LMB

BMW E81 E87 E90 PDC Parking Sensor Ultrasonic Le Mans Blau Metallic - 381

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G91-15K603-KB

Jaguar XF X250 Keyless Entry Antenna Receiver Module 6G91-15K603-KB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5CU971095

Volkswagen Jetta A6 Bumper Cable Wiring Harness Loom 5CU971095

€42.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 7P6907816

VW Touareg 7P Pitch Angle Sensor Control Unit Mount Bracket Holder 7P6907816

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9348935

BMW X1 F45 F48 Mini F55 F56 F60 Air Module Control Unit Module ECU 9348935

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14301-AD

Range Rover Evoque L538 Negative Minus Earth Battery Cable BJ32-14301-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-9E729-AB

Land Rover Range Rover Sport L494 Front Radar Mounting Bracket CPLA-9E729-AB

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1742690-4

BMW E61 E60 E63 E87 E90 Relay Changer Make Contact Salmon Red 1742690

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2016513

Ford Fiesta Mk7 Focus Mk3 Fuel Injector Wiring Loom Zetec S ST BM5G-9F666-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2749000800

Mercedes W205 C350e M274.920 279HP Engine ECU Kit A2749000800 Automatic

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9151348

BMW F07 HV Battery Positive Terminal Lead Clamp Wire Harness Cable Loom 9151348

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G9945096B-1

Audi A6 C7 Rear Tail Light Wire Wiring Cable Right O/S 4G9945096B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0035502B

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

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8370933

BMW 3 5 6 Series E60 E61 E63 E90 Support Bracket Navigation Computer 8370933

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018CK-1

Skoda Superb B6 VW Golf 5K Engine Control Unit 170 HP 2.0 TDI CFGB 03L906018CK

€450.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7550017

Mini Cooper One Clubman R55 R56 R58 R59 R60 Starter Motor 1.6 Engine 7550017

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W8971036E

Audi A5 S5 RS5 F5 Door Wire Harness Wiring Front Right O/S 8W8971036E 8W8971036G

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9208452

Wiring BMW F07 Front Bumper PDC Wiring Park Assist Sensor Harness 9208452

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469003014

Mercedes W176 W231 W246 Electric Parking Brake Control Unit Module A2469003014

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. N8B2-14B227-AB

Land Rover Defender L663 Range Rover L560 DC/DC Converter Module N8B2-14B227-AB

€949.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420919275-BLM

Audi A5 8T Rear Bumper PDC Parking Distance Sensor Black Magic Pearl - C9Z

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055409414

Mercedes C253 S205 Front Door Wiring Loom Cable Harness Right O/S A2055409414

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9866980

BMW F20 Body Control Unit Module REM Fuse Box 9866980

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 13720856

Mercedes W212 Negative Cable Battery Terminal Wiring 13720856

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075400009

Mercedes C204 C207 Roof Headliner Wiring Loom Harness A2075400009

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0857273A

Audi Q3 8U Multimedia Display Screen Radio Sat Nav Head Unit 8U0857273E

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7831186

BMW E46 M3 Starter Motor Positive Battery Cable Lead Wiring Harness 7831186

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9T-14B192-EA

Ford Fiesta Transit Relay 4-Pin Grey FoMoCo Unit 6G9T-14B192-EA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0907280A

Audi A6 C6 On Board Onboard Supply Module Control Unit ECU 4F0907280A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7391043

BMW F10 X1 F48 Mini F54 Rear Tailgate Smart Opener Bottom Wire Sensor 7391043

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. D1BT-14D212-CC

Ford Fiesta Mk7 Bluetooth Control Module Unit ECU D1BT-14D212-CC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J0927841

Audi Volkswagen Seat Skoda ESP Relay Unit Grey 444 1J0927841

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0909605T

VW Volkswagen Golf Mk5 V 1K Air Module Control Unit ECU 1K0909605T

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6409004900-2

Mercedes W169 W245 180 CDI OM640.940 109HP Engine ECU Kit A6409004900 Automatic

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7G9T-14B533-BF

Ford Mondeo Door Control Module Unit ECU Front Driver's Side 7G9T-14B533-BF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X2T-14300-AC

Jaguar XF X250 Positive Battery Cable Lead Connection 2.7D 8X2T-14300-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9255135-LMB

BMW E81 E87 E90 E91 PDC Parking Sensor Front Rear Le Mans Blau Metallic - 381

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0035613

Audi A3 8P Bluetooth Module Multimedia Control Unit Cover Unit 8P0035613

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06L911021

Audi A4 B9 2.0 TFSI CVKB Petrol Engine Starter Motor 06L911021

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8Y0945308A-1

Audi A3 8Y Rear Taillight Lamp Wiring Harness Loom Cable Right O/S 8Y0945308A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5E3971392AC

Skoda Octavia VR Seat Frame Wiring Harness Cable Front Right O/S 5E3971392AC

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0941824B

Audi Q5 8R Q7 4L A7 4G Fuse Box Connector Socket Module Unit 8K0941824B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HK72-19H406-AC

Land Rover Discovery Sport L550 Front Windscreen Camera HK72-19H406-AC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0971142C

Audi A8 D4 Door Card Wiring Loom Cable Harness Rear Right O/S 4H0971142C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129061903-2

Mercedes S212 Boot Tailgate Lamp Inner Left N/S Wire Harness Loom A2129061903

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A2D542

BMW F40 Body Control Module Domain Controller Unit BDC ECU 5A2D542

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR025823

Land Rover Vogue L322 Alternator Generator Mount Bracket Holder BH42-10239-BA

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7273667

BMW F30 F31 F32 Rear Tailgate Smart Opener Lower Antenna 7273667

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8809737

PDC Wiring BMW X4M F98 G02 Rear Bumper Parking Assistance Sensor Harness 8809737

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 82A971589B

Audi A1 GB S3 8Y Multifunction Steering Wheel Button Wiring Harness 82A971589B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9436281

BMW G20 G21 Front Door Wiring Loom Harness Cable Driver Side 9436281

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0035503M-1

Audi A6 C6 Bluetooth Antenna Module Control Unit ECU 8P0035503M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9146329-1

BMW X5 E60 E61 E65 E70 Front Left N/S Seat Angle Adjustment Drive 9146329

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 000051446C

VW Volkswagen Golf Mk6 5K Digital Media Adapter Cable Wiring Loom 000051446C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8C1T-18C815-AC

Ford Transit Mk7 Radio CD Player 6000 Single CD Head Unit 8C1T-18C815-AC

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0837202Q-1

Volkswagen VW Golf Mk6 Remote Key Radio Alarm Key Fob Opener 3 Button 5K0837202Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1ET-14B533-BG

Ford Kuga MK2 C-Max Door Control Module ECU Front Passenger Side F1ET-14B533-BG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6904550

Land Rover Range Rover L322 Wiper Relay Pink 5 Pin 3.0 Diesel M57 6904550

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X2T-14300-FC

Jaguar Xf X250 2.7D Positive Battery Terminal Cable Lead 8X2T-14300-FC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937084M

Volkswagen VW Golf Mk7 BCM Convenience Body Control Module Unit ECU 5Q0937084M

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DX23-14D645-AC-1

Jaguar XF X250 Fuse Box BCM Body Control Module DX23-14D628-AH DX23-14D645-AC

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7S7T-19G481-DC

Ford Mondeo Mk3 Body Control Module BCM Control Unit 7S7T-19G481-DC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218708285

Mercedes W221 Head Unit DVD High Line Radio Player Navigation A2218708285

€560.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. Q0008767V003000000

Smart W452 Triggering Control Unit Belt Locking Retractor Q0008767V003000000

€146.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH22-18N378-AB

Land Rover Discovery 4 L319 Battery Tray Holder Trim Right O/S AH22-18N378-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2731535279-1

Mercedes X164 Engine Control Unit 5.5 Petrol 387HP Automatic A2731535279 Kit Set

€1,187.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0035456

Audi S5 8T Antenna Amplifier Aerial Control Module Unit ECU 8J0035456

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8214002110

Toyota Auris E15 Verso R20 Wiring Loom Harness Cable Loom 8214002110

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02E911024H

Volkswagen Seat Skoda Audi 2.0 TDI Diesel Engine Starter Motor Valeo 02E911024H

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8603576

BMW E84 sDRIVE20i N20 N20B20A Engine Control Unit ECU Automatic 8603576

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6927311-1

BMW E60 E61 Front Seat Control Unit Module Controller ECU 6927311

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0971036R

Audi Q3 8U Door Loom Wiring Harness Cable Front Passenger Side N/S 8U0971036R

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9137804

Mini Cooper One R55 R56 R57 R58 R59 Drivers Door Wiring Harness Loom 9137804

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1ET-14B531-BE

Ford Focus Mk3 Front Door Control Module Driver Side F1ET-14B531-BE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02Z911023FX

Volkswagen Audi Seat Skoda Engine Starter Motor 1.9 TDI 02Z911023FX

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B50DE2

BMW U06 Active Tourer Rain Light Solar Condensation Sensor 5B50DE2

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1648204426

Mercedes W251 Air Module Control Unit ECU A1648204426

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0971599B

Porsche Cayenne S 92a Wiring Harness Wire Cable Battery Alternator 7P0971599B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 81A971104

Audi Q2 GA Rear Bumper PDC Parking Sensor Wiring Harness Loom 81A971104

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401302

Mercedes C205 Positive Battery Wiring Loom Harnes Cable A2055401302

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7273666

BMW F30 F31 F32 Rear Tailgate Smart Opener Upper Antenna 7273666

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1T0035577AF

VW Volkswagen Touran 1T Aerial Amplifier Control Unit Module 1T0035577AF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WB959107

Audi Q3 F3 Rear Tailgate Bootlid Control Unit Module ECU 5WB959107

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 39113-2A511

Kia Ceed I 1.6 CRDI 115HP D4FB Diesel Engine Control ECU 39113-2A511 Manual

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0004461160

Mercedes Sprinter W906 FleetBoard Onboard Time Recorder Control Unit A0004461160

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9340996

BMW F87 Door Wire Harness Cable Loom Front Passenger's Side 9340996

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K8955557

Volkswagen Scirocco Mk3 Door Crash Impact Pressure Sensor Unit 1K8955557

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005400764

Mercedes W205 Battery Negative Ground Bonding Line Wire Earth Cable A0005400764

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06A903141P

Audi A3 8L Alternator Tensioner Pulley Ancillary Bracket 1.8T APY 06A903141P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2215403110

Mercedes W221 Positive Battery Cable Wire A2215403110

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729007500

Mercedes W204 Seat Module Memory Control Unit Front Left N/S A1729007500

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A08539

BMW G20 G21 330e Hybrid Fuel Pump Control Module ECU 5A08539

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M0971237S

Audi Q7 4M Q8 Mk1 Battery Negative Cable Wiring Earth Line 4M0971237S

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6958449

BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver Side 61356958449 6958449

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7G9N-10300-EA

Ford Mondeo Mk4 S-Max Alternator Generator 2.0 TDCI 7G9N-10300-EA

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7M0951253C-1

VW Volkswagen T5 Audi Seat Skoda Relay Black Control Unit 5 Pin 12V 7M0951253C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6923502

Mini R50 One D Diesel W17 Cable Starter Base B- Wire 6923502

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

...

Showing 3961-4059 of 22939 products