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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Volkswagen Jetta A6 Rear Left N/S Tail Light Plug Cable 5C6945095H 4D0972704

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907556C

Volkswagen Tiguan Mk2 Arteon 360° Camera Control Unit Module 5Q0907556C

€294.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K0971121AK

Volkswagen Caddy Mk2 Front Door Wiring Harness Cable Passenger Side 2K0971121AK

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3D0937576

VW Volkswagen Phaeton 3D Main Fuse Socket Electrical Control Unit 3D0937576

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0955557

Volkswagen VW Polo 6R 5 Audi A6 C7 Air Module Crash Impact Sensor 4H0955557

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5CU971104

VW Volkswagen Jetta A6 Mk6 Rear Bumper PDC Sensors Wiring Loom Harness 5CU971104

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0971158A

Volkswagen Transporter T6 Positive Plus Battery Cable 7E0971158A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA906121

VW Volkswagen Golf Mk8 GTI CD1 4 Motion Fuel Pump Control Unit Module 5WA906121

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0971349AM

Volkswagen Polo Mk5 V 6R Battery Cable Alternator Starter 6R0971349AM

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0035156B-1

Volkswagen Transporter T5 Golf Mk6 Radio CD Player Head Unit 7E0035156B

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425B-27

VW Golf Mk7 5G 2.0 4motion CJXC 300HP Engine Control ECU 8V0906259F Automatic

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0945208-3

Volkswagen VW Golf Mk7 TailLight Rear Lamp Right O/S Harness Loom Wire 5G0945208

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K0971557F

Volkswagen VW Caddy 2K Door Harness Loom Cable Wiring Front Left N/S 2K0971557F

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. NL1T-19J235-AE

Volkswagen Amarok NF Centre Console Wireless Charger Control Unit NL1T-19J235-AE

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0959772D

VW Touareg Phaeton Heated Seat Control Module Unit 7L0959772D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6945207-2

VW Touareg 7P Rear Tail Light Lamp Wiring Harness Cable Plug Right O/S 7P6945207

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5971691A

Volkswagen Caddy 2K Sliding Door Wiring Loom Harness Cable Left N/S 2K5971691A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0907115K

Volkswagen Golf 5k Engine Control ECU 2.0 Petrol 235 HP 5K0907115K Automatic KIT

€759.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3D0919473

Volkswagen Touareg 7L PDC Parking Aid System Display Panel Unit 3D0919473

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 070903143C

Volkswagen Touareg 7L Alternator Mounting Bracket Carrier Holder 070903143C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018GF-1

Volkswagen Scirocco Mk3 2.0 TDI 140HP CFHC Engine ECU Kit BCM 2 Key 03L906018GF

€256.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K3959857B

Volkswagen Polo 6R Golf Mk6 3-Door Window Lifter Switch Driver's Side 1K3959857A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2GA907159

VW Volkswagen T-Roc Mk1 Body Sound Control Unit Module ECU 2GA907159

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 191937503

VAG VW Volkswagen Audi Seat Skoda Relay Unit 4 Pins 12V 40A 191937503

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03E906019AK-1

Volkswagen Polo 6R CGPB 1.2 Petrol 60HP Engine Control ECU Manual 03E906019AK

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 07Z911023BX

Volkswagen Phaeton 3D Engine Starter Motor Acutator 5.0 V10 Diesel 07Z911023BX

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C4971694QB

Volkswagen Passat B6 Rear Door Wiring Loom Harness Right O/S 3C4971694QB

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0035342E-1

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0955559C

Volkswagen Golf 8 Rain Sensor Front Windscreen 5Q0955559C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K8907159

Volkswagen Scirocco III Mk3 Impact Sound Control Module Unit 1K8907159

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971615BH

VW Golf Mk5 Audi A3 8P Engine Wiring Harness Loom Cable Guide 1K0971615BH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C4971689K

Volkswagen Passat B6 Rear Door Wiring Adapter Cable Left Right N/O/S 3C4971689K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0937617-1

Volkswagen Transporter T5 Fuse Box Control Module Unit 7E0937617

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0035342F

VW Volskwagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7H0937550A

Volkswagen Trasnporter T5 Main Fuse Socket Engine Bay Panel Module 7H0937550A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA907801G

Volkswagen Passat CC Parking Brake Handbrake Control Module Unit ECU 3AA907801G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0945095Q-2

VW Tiguan 5N Taillight Side Panel Wire Socket Connector Rear Left N/S 5N0945095Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8Y0963554B

Volkswagen Golf 8 Rear Seat Couch Occupancy Sensor Unit 8Y0963554B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0959655D

Volkswagen Touareg 7P Air Module ECU Control Module Unit 7P0959655D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971250AE

Volkswagen Scirocco Mk3 Negative Battery Terminal Cable Wiring 1K0971250AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0907115-1

Volkswagen Scirocco III 2.0 TSI CCZB 211HP Engine Control ECU 5K0907115 Manual

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3G9945307E-1

VW Passat B8 Tail Light Rear Lamp Inner Left N/S Wire Cable Harness 3G9945307E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H0837085

VW Volkswagen Golf R Cd1 Door Lock Harness Cable Wire Front Right O/S 5H0837085

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA919234

Volkswagen Passat B7 Aid Module Deactivation Warning Light Indicator 3AA919234

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3A0972695

VW Volkwagen Audi Seat Skoda Cable Loom Wiring Connector Plug Socket 3A0972695

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Q2941006B-2

VW Volkswagen Eos 1F Front Headlight Cable Wire Loom Plug Right O/S 1Q2941006B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0951253A

VW Crafter SY Skoda Fabia Mk4 5 Pin Switch Relay 12V Number 655 8X0951253A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0907376A

Volkswagen VW Golf Scirocco Mk3 Electric Damping Control Module 3C0907376A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K8971104F

Volkswagen Scirocco Mk3 Rear PDC Parking Sensor Wiring Harness Loom 1K8971104F

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0937529

Volkswagen Passat B7 Golf Mk6 Relay Repair Plug Wiring Connector Loom 4H0937529

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA959433E

VW Volkswagen Passat B7 Convenience Body Control Module Unit ECU 3AA959433E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J6035111-1

VW Volkswagen Touareg 7L Golf Mk4 CD Changer Radio Unit 1J6035111

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6Q4971161A

Volkswagen Polo 9N Rear Door Speaker Wire Harness Left Right N/O/S 6Q4971161A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0937090B

Volkswagen Transporter T6 BCM Body Control Module 433MHZ ECU 2.0 TDI 7E0937090B

€270.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7CA971691

VW Volkswagen Crafter Sy Sliding Door Wiring Harness Cable Left N/S 7CA971691

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0035342E

VW Volkswagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959107M

Volkswagen Tiguan Mk2 Electric Boot Lid Tailgate Control Unit Module 5Q0959107M

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7H0971158L-1

Volkswagen Transporter T5 Battery Cable Positive Wiring 7H0971158J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L907309-3

Volkswagen Passat B6 2.0 TDI CBDC 110HP Engine Unit ECU Manual 03L907309

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0962131

Volkswagen Tiguan 5N Audi Q3 8U Keyless Antenna Amplifier Unit 5K0962131

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C8971693DM

VW Volkswagen Passat CC Rear Door Wiring Harness Cable Left N/S 3C8971693DM

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L907309R-1

Volkswagen Caddy Mk3 2.0 TDI CFHC 140HP Engine Control ECU 03L907309R Manual

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA959436P

Volkswagen Golf CD1 Keyless Go Module ECU Entry Control Unit 5WA959436P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5971557B

Volkswagen Caddy 2K Door Wiring Harness Cable Front Driver's Side 2K5971557B

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0915181A

Volkswagen Polo Mk6 GTI Negative Battery Terminal Cable Lead 2Q0915181A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. MB3T-14N143-MC

VW Amarok Mk2 Negative Earth Battery Wiring Loom Cable Connector MB3T-14N143-MC

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1T0906216

Volkswagen Caddy 2C Engine Control Unit Support ECU Holder 1.6 TDI 1T0906216

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H0035456A

VW Golf R CD1 Lamando Sound Amplifier Audio System Module Unit 5H0035456A

€184.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0951253A-2

Seat Skoda Audi VW Polo 6R Multi Use Control Relay 4 Pin 645 4H0951253A SET X3

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AH911023B

Volkswagen Caddy 2k Engine Starter 2.0KW Bosch 2.0 Diesel BST 0AH911023B

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7C0971157K

VW Volkswagen Crafter Sy Starter Alternator Loom Harness Wire Cable 7C0971157K

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. P1WT-18D890-ZE

VW Volkswagen Amarok NF Stereo Audio Multimedia Radio Head Unit P1WT-18D890-ZE

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Q0951171A

Volkswagen New Beetle Ultrasonic Alarm Sensor Module Unit 1Q0951171A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0951253C-1

Volkswagen Polo 6R Tiguan 1T Multi Use Control Module Relay SET 4H0951253C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0035730B

Volkswagen Golf Mk6 Bluetooth Control Interface Module Unit System 5K0035730B

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0959655

Volkswagen Touareg 7L Air Module Control Unit Crash Impact Sensor 7L0959655

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0971228

VW Volkswagen Tiguan 5N Positive Battery Terminal Cable Lead Wiring 5N0971228

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0971225B-1

Volkswagen Touareg 7P Negative Battery Cable Wiring Loom 7P0971225B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0907652C

Volkswagen Touareg 7P ESP Yaw Rate Sensor Module Unit Control ECU 7P0907652C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3G9945208J-1

Volkswagen Passat B8 Tail Light Rear Lamp Outer Right O/S Wire Cable 3G9945208J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3A0972695A

VW Scirocco Mk3 OBD Diagnostic Connector Wiring Loom 16 Pin Plug 3A0972695A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K7955559B

VW Volkswagen Caddy 2K Front Windscreen Rain Light Solar Sensor Unit 5K7955559B

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06J903023A-2

Audi A3 8V VW Golf Mk7 Alternator Generator 14V 140A 2.0 TFSI 06J903023A

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5C6945096H-1

VW Volkswagen Jetta A6 Tail Light Wiring Cable Outer Rear Right O/S 5C6945096H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3G9945308D-1

Volkswagen Passat B8 Tail Light Rear Lamp Inner Right O/S Wire Cable 3G9945308D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0919813B

Volkswagen Golf Mk7 GTI Card Reader Toll DSRC Module 8V0919813B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5QF915459A

Volkswagen Tiguan Mk2 Rear Battery Potential Distributor 2.0 Diesel 5QF915459A

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06J903023D

Audi Volkswagen Seat Skoda Petrol Alternator Generator 14V 140A 06J903023D

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G4971694K

Volkswagen Golf Mk7 Rear Door Wiring Loom Harness Cable Right O/S 5G4971694K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5971692

Volkswagen Caddy 2K Mk2 Sliding Door Wiring Loom Harness 2K5971692

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0915343A

Volkswagen Polo Mk6 AW Battery Holder Cover Surround Mount 2Q0915343A

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3G5971104C

Volkswagen Passat B8 Rear Parking PDC Sensor Wiring Loom 3G5971104C

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LX6A-9D370-CB

VW Volkswagen Amarok Mk2 Fuel Injection Pump Control Unit Module LX6A-9D370-CB

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C906016AJ

Volkswagen Golf 5K CAXA 122HP Engine Control Unit ECU Kit 03C906016AJ Automatic

€146.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0907311C

VW Touareg 7P 204HP 3.0 Diesel CJMA Engine Module ECU Unit 7P0907311C Automatic

€203.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L903024A

Volkswagen VW Crafter 2E Alternator Generator Diesel Engine 110A 03L903024A

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5959655E

VW Volkswagen Caddy Maxi 2k Airbag Control Unit Module ECU 2.0 Diesel 2K5959655E

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02M911024Q

Volkswagen Golf VI Passat B6 Tiguan Starter Motor Diesel Engine 02M911024Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0907159D

VW Volkswagen Golf R 5g BA BQ Impact Sound Control Unit Module ECU 5G0907159D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

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