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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VW Touareg 7P Automatic Transmission Module Control Unit ECU 3.0 TDI 0C8927755C

€142.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CV1T-14B532-BC

Ford B-Max Door Control Unit Module Rear Left Right N/O/S CV1T-14B532-BC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BV6T-14297-AAG

Ford Focus Mk3 Windscreen Heated Washer Jet Wiring Harness Cable BV6T-14297-AAG

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9267205-1

BMW E87 LCI ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9267205

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6519062800

Starter Mercedes W204 W212 W906 Diesel OM651 Starter Motor Bosch A6519062800

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AG9N-10723-AC

Land Rover Freelander 2 L359 HV Battery Tray Holder Bracket AG9N-10723-AC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A0B302

BMW F20 F30 Mini F60 KAFAS 2 Camera Speed Control ECU Module Unit 5A0B302

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K5945096D-2

Audi A4 B8 Saloon Rear Tail Light Lamp Wiring Harness Cable Right O/S 8K5945096D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0951253A-1

Seat Skoda Audi VW Polo Multi Use Control Relay 4 Pin 645 4H0951253A SET X2

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A898F2

BMW F70 F74 F78 Parking Brake Wiring Harness Cable Rear 5A898F2

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8662843-1

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

€664.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0035223AP

Audi A4 S4 B8 Audio Amplifier Sound Booster Control Unit Module 8T0035223AP

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1J6945111T-2

Volkswagen Golf Mk4 Rear Tail Light Wiring Harness Cable Left N/S 1J6945111T

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009051910

Battery Cable Mercedes W177 W247 Negative Lead Terminal Harness A0009051910

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1331510745

Mercedes C117 CLA 45 AMG Heat Shield Alternator Plate Petrol M133 A1331510745

€28.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. A1649100075-1

Mercedes ML W164 Lumbar Module Front Seat Lumbar Control Unit A1649100075

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V41-13A602-AD-2

Ford Kuga Mk1 Rear Tail Light Lamp Inner Right O/S Wire Cable 8V41-13A602-AD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P5882771

Porsche Cayenne 92A Front Seat Pump Ventilblock Unit 7P5882771

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P0971349B

Porsche Cayenne 92A Minus Negative Wiring Loom Harness Cable 7P0971349B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7634057

BMW 3 4 Series F30 F31 F32 N20 Engine Gearbox Module Wiring Loom Harness

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. N8B2-19L300-PF

Land Rover Defender L663 Sat Nav Multimedia Head Unit N8B2-19L300-PF

€569.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1669003903

Mercedes GLE W166 GLS X166 Air Module Unit Control ECU SRS A1669003903

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0959655B

Audi A6 C6 Air Module Control Unit ECU Module 4F0959655B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A9105400805

Mercedes Sprinter W910 Fuel Tank Wiring Loom Cable Harness A9105400805

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0959655G

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5WA915343B

Battery Bracket VW Golf 8 CD1 Audi A3 8Y Battery Clamp Holder 5WA915343B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P6035730J

VW Volkswagen Caddy 2C Scirocco Bluetooth Control Module Unit ECU 7P6035730J

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0971068F

VW Volkswagen Tiguan 5N AD BT Exhaust Flap Wire Harness Loom 5Q0971068F

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V0919129B

Volkswagen Golf Mk7 Audi A3 8V TV Tuner ECU Control Module 8V0919129B

€161.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR012048

Land Rover Range Rover Evoque L538 Battery Hold Down Bracket Mount LR012048

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5H0035411

Volkswagen Golf Mk8 A-Pillar Speaker Tweeter Sound Left Right N/O/S 5H0035411

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8611289

Mini Cooper S R56 JCW Coolant Thermostat Adapter Wiring Cable 8611289

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9380334

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 9380334

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 0AD927755BT

Porsche Cayenne 9PA Gearbox Control Unit Module Controller ECU 0AD927755BT

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5LA907357H

Audi A6 C6 Front Lamp Headlight Range Control Module Unit ECU 5LA907357H

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-14C676-AA

Land Rover L550 Jaguar XE F-Pace Air Module Crash Impact Sensor FK72-14C676-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR000916

Range Rover Evoque L538 Sun Sensor Control Unit 8624285

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1725420023

Mercedes W176 W204 W246 Front Parking Sensor Display Control PDC A1725420023

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 06E971627N

Audi A4 B8 A6 C7 A7 C7 4G Fuel Injector Wiring Cable 3.0 TFSI 06E971627N

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P6907530F

VW Volkswagen Touareg 7P MK2 Gateway Control Unit Module ECU 7P6907530F

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A20559

BMW F40 F44 Transmission EGS Control Module Unit ECU 5A20559

€203.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6395402710

Mercedes Vito W639 Key Reader Ignition Lock Cable Wiring Harness A6395402710

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7857551

Battery Cable BMW F80 M3 F82 M4 Wire Lead Positive Alternator Starter B+ 7857551

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6799083

Control Unit BMW F10 F11 X3 F25 Parking Brake Handbrake Module EMF 6799083

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8U0945094H-1

Audi Q3 8U Rear Tail Light Lamp Wiring Harness Cable Plug Right O/S 8U0945094H

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009002720

Mercedes Sprinter W907 Parking Control Unit Module Sensor Parktronic A0009002720

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8U0945093M-1

Audi Q3 8U Tail Light LED Lamp Wiring Loom Plug Rear Left N/S Outer 8U0945093M

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G8959792J

Audi A7 4G8 Door Control Module Front Passenger Side 4G8959792J

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8513249-1

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

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129009729

Mercedes W176 W207 W212 Keyless Door Lock Module ECU Unit A2129009729

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. F30-SCREEN-2

BMW F30 F31 Dashboard Dash Central Information Screen Display Android 10.25"

€237.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2188205061-1

Mercedes C218 Front Headlight Wiring Harness Cable Right O/S A2188205061

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. F1ET-14F142-BC

Ford Transit Connect Door Module Front Left N/S Control Unit ECU F1ET-14F142-BC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. J8A2-70718-CAA

Land Rover Range Rover Sport L494 Telematics Unit 3G Connectivity J8A2-70718-CAA

€123.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1645403130

Mercedes W164 Positive Battery Cable Wiring A1645403130

€170.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1179008700

Mercedes GLA X156 Air Module Safety Belt Tensioner Unit Control A1179008700

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. K8D2-10757-A

Range Rover Evoque L551 Battery Box Tray Cover Panel Side Front K8D2-10757-A

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7621063

BMW X3 F25 X4 F26 Earth Ground Cable Line Strap Battery Lead 7621063

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7953081

BMW X1 U11 Battery Cable Negative Terminal PHEV Earth Cable Wiring PHEV 7953081

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9891438

BMW G20 G21 Door Interior LED Module Connector Light Rear Front 9891438

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9298947-2

BMW Z4 E89 Body Control Module ECU Junction Box PL2RR JBBFE 9298947

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8379766

BMW E65 E90 E91 E92 E93 Auto Boot Release Switch Tailgate 8379766

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1398342080

Citroën Relay III Alarm Buzzer Wiring Harness Cable Plug 1398342080

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9361601

BMW Active Tourer F45 Door Wiring Loom Harness Cable Rear Right O/S 9361577

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9227752

BMW F20 F21 F22 F23 F30 F80 M3 F82 F36 Distributor B Multifuse 9227752

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6927705

BMW 5 Series E60 E60N E61 E61N Battery lead positive underfloor 80 MM² AL petro

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6Q0951253

Volkswagen Polo Mk4 Passat B7 Additional Brake Light Relay 4 Pin Black 6Q0951253

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BM2J-19H405-AA

Ford S-Max Galaxy Mk3 Reverse Camera Control Module BM2J-19H405-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6945147

BMW 5 6 Series E60 E61 E63 Passenger Door Airbag Control Module 6945147

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9216286

BMW F20 F21 Socket Plug Wiring Loom Cable 9216286

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8634244

Engine Wiring BMW F45 Mini F60 B38 Loom Harness Injection Valve Ignition 8634244

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2719060200

Mercedes W204 W211 W212 S212 Engine Starter Motor A2719060200

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8E0857925G

Audi A3 8P TT 8J A4 B7 Ipod Interface Multimedia Storage Compartment 8E0857925G

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9190110

BMW Z4 E89 Battery B+ Engine Compartment Terminal Point 9190110

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 99661230310

Porsche Boxster 986 Wiring Cables Harness Loom Front Left N/S 99661230310

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2055404596

Mercedes W205 Electrical Ground Line Wire Earth Cable A2055404596

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0959793S

Audi A4 B8 Front Door Control Module Unit ECU 8K0959793S

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8X0971687D

Audi A1 8X Rear Door Harness Left Right N/O/S Wiring Loom Cable 8X0971687C

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2139005613

Mercedes W213 Front Door Module Right O/S Control Unit A2139005613

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P6907357

Volkswagen Touareg 7P Front Lamp Headlight Range Control Module ECU 7P6907357

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9263944

BMW X5 E70 X6 E71 CIC MID CD Player Audio System 9263944

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W0941823E

Audi A4 B9 A5 F5 Power Distribution Fuse Box Battery Unit 8W0941823E

€99.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DH22-19C166-CA

Land Rover Discovery 4 L319 USB AUX Multimedia Socket Port DH22-19C166-CA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129006724-1

Fuse Box Mercedes W204 S204 W212 SAM Control Unit Module Relay A2129006724

€137.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5M5T14B192EA

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO 5M5T14B192EA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. F1ET-14F144-BC

Ford Transit Connect Door Module Front Right O/S Control Unit ECU F1ET-14F144-BC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9807169

Mini Cooper One R56 R55 R58 R60 R61 Air Module Control Unit ECU 9807169

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. HPLA-14F392-JE

Range Rover Sport L494 Body Control Module Unit BCM ECU HPLA-14F392-JE

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7253188

BMW E92 Sport Seat Left Right Thigh Support Heated Cover Trim Leather Dakota

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1665400182-1

Mercedes C292 Fuse Box Cover Trim Panel Lid Black A1665400182

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469006816

Mercedes W176 W231 W246 Electric Parking Brake Control Unit Module A2469006816

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8584817

BMW G20 G21 G01 G02 Wiring Harness Engine Glow Plug Module 8584817

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0955557A

Audi A6 C6 Door Crash Impact Sensor Front Left Right N/O/S 4F0955557A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3412574

BMW X3 Series E83 Rear Left Right Door N/O/S Wiring Loom Cables 3412574

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9260902

BMW E81 E82 Driver's Door Wiring Loom Harness Cables 9260902

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9389310

BMW F45 Door Wiring Front Driver's Door Loom Cable Wiring Harness 9389310

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9203304

BMW X5 Series E70 Cable Loom Door Rear Left Right N/O/S Wiring Harness 9207857

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5G0035050A

Volkswagen Golf Mk7 Infotainment Sat Nav Unit RNS315 5G0035050A

€564.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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