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 Mk6 Front Door Wiring Harness Cable Driver Side 5CH971121E

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3AA919475D

VW Volkswagen Touran 1T Tiguan 5N Parking Sensor Control Module ECU 3AA919475D

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0907655D

VW Touran 1T Yaw Sensor ESP Rotation Rate Control Unit Module 1K0907655D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1Q0959655A

VW Volkswagen Eos 1F Air Module Control Unit ECU 1Q0959655A

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5H0947145C

Volkswagen Golf GTI CD1 Led Ambient Lighting Dashboard Connector 5H0927103K

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5WA907007K

Volkswagen Golf Cd1 Mk8 Climate Control Module ECU 2.0 Diesel 5WA907007K

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3AA971689

VW Volkswagen Passat B7 Door Wiring Adapter Loom Rear Left Right N/O/S 3AA971689

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5K0971104C

Volkswagen Golf GTI Mk7 Rear Bumper PDC Sensors Wiring Loom Harness 5K0971104C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7E0945095T-2

Volkswagen Transporter T6 Rear Lamp Side Tail Light Wiring Left N/S 7E0945095T

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C0035279G

VW Volkswagen Passat B7 CC Beetle Radio Sat Navigation Head Unit 3C0035279G

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. MB3T-14B060-ABE-1

VW Volkswagen Amarok NF Engine Wiring Loom Harness Cable MB3T-14B060-ABE

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906022CH-1

Volkswagen Transporter T5 2.0 TDI 140HP Diesel Engine ECU Kit Module 03L906022CH

€379.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7CC971120AK

Volkswagen Crafter Mk2 SY Front Door Wiring Loom Harness Left N/S 7CC971120AK

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5K0937087P

VW Volkswagen Sharan 7N Body Control Module BCM CCM Unit 5K0937087P

€127.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0906121S

Volkswagen Golf Mk7 Mk8 Fuel Pump Control Unit Module 1.6 TDI 5Q0906121S

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2K5972176E

Volkswagen Caddy Maxi 2K Tailgate Lock Wiring Loom Cable 2K5972176E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P6971121H

VW Volkswagen Touareg 7P Door Wiring Loom Harness Front Left N/S 7P6971121C

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N0035342F-1

Volkswagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342F

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0909606C

Volkswagen Touareg 7L Front Impact Crash Sensor Right Left N/O/S 7L0909606C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P6971161FL

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

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2K5972175A

Volkswagen Caddy 2K Maxi Tailgate Wiper Wiring Harness Loom Cable 2K5972175A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0915333C

Audi A3 8P VW Golf MK5 Battery Box Tray Housing Holder Bracket Cover 1K0915333C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5WD919294

Volkswagen Golf GTI CD1 PDC Parking Distance Control Module 5WD919294

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5K0959434E

Audi A1 8X Volkswagen Tiguan 5N Keyless Entry Control Module Unit 5K0959434E

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0919275-SHB

VW Golf Mk6 Audi TT 8J Parking Distance Control Sensor Shark Blue Metallic - A5Q

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7E0937503B

VW Volkswagen Transporter T5 Engine Bay Fuse Box Relay Plate 2.5 TDI 7E0937503B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7H0805283D

VW Volkswagen Transporter T5 Battery Console Holder Support Mount 7H0805283D

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7E0937545A

Volkswagen Transporter T5 Main Fuse Socket Connector Housing Bracket 7E0937545A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6C0915423

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P6971121D

VW Volkswagen Touareg 7P Front Door Wiring Harness Passenger's Side 7P6971121D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K8971104D

Volkswagen Scirocco III Rear Number Plate Wiring Harness Cable Loom 1K8971104D

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0906121L

Volkswagen Golf Mk7 Fuel Pump Control Module ECU 2.0 TDI 5Q0906121L

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0937084DF

Volkswagen Golf 5G Body Control Module Onboard Unit 5Q0937084DF

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0907530G

Volkswagen Passat B7 Gateway Control Unit Module ECU 7N0907530G

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7H0959668B

VW Volkswagen Transporter T5 Sliding Door Motor Unit 7H0959668B

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K8971148J

Volkswagen Scirocco Mk3 Tailgate Window Washer Wiring Harness Cable 1K8971148J

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2K6941005B-2

VW Volkswagen Caddy 2K Headlight Headlamp Wiring Front Left N/S 2K6941005B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2Q0907685E

VW Golf Gti CD1 Blind Spot Lane Change Control Module Rear Left N/S 2Q0907685E

€104.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1Q0951172A

Volkswagen Eos Alarm Sensor Control Module Unit 1Q0951172A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7H0945096J-2

Volkswagen Transporter T5 Rear Lamp Tail Light Wiring Cable Right O/S 7H0945096J

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9065450024

Volkswagen Crafter AdBlue Metering Control Unit ECU 2.0 TDI Diesel A9065450024

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0951253A

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0971349CB

Volkswagen Golf Mk6 Audi A3 8P Alternator Wiring Harness 2.0 TDI 1K0971349CB

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L6971693P

Volkswagen Touareg 7L Rear Door Wiring Loom Harness Cables 7L6971693P

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0951253C

Seat Skoda Audi VW Polo 6R Multi Use Control Module Relay 4 Pin 646 4H0951253C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3D0972072AG

VW Phaeton 3D Electrical Steering Column Wiring Harness Loom Cable 3D0972072AG

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2GA947201

VW Volkswagen T-ROC A11 Front Door Handle LED Light Cable Left N/S 2GA947201

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N0035341F

Volkswagen VW Scirocco Mk3 Multimedia Interface Media-In Module Box 5N0035341F

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5H0945207A-2

VW Golf GTI CD1 Tail Light Rear Lamp Socket Cable Plug Left N/S 5H0945207A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3B0951253

Volkswagen Golf 5G Caddy 2K Crafter SY Heated Windscreen Relay 4-Pin 3B0951253

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2K2945096T-1

VW Volkswagen Caddy Maxi 2k Rear Tail Light Lamp Plug Cable Left N/S 2K2945096T

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0907159D

Volkswagen Golf Mk7 Sound Actuator Control Unit Module 4H0907159A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C8941753R-2

Volkswagen Passat CC Front Headlight Wiring Harness Cable Left N/S 3C8941753R

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7E0915181G

Volkswagen Transporter T6 Camper T5 Battery Wiring Loom Harness Cable 7E0915181G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N0131552D

VW Volkswagen Tiguan 5N DPF Sensor Mount Bracket Holder Retainer 5N0131552D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 02E911024D

Volkswagen Golf Mk7 Audi A3 8V Engine Starter Motor Start Stop Denso 02E911024D

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. NU5T-15604-KACN

VW Volkswagen Amarok Mk2 BCM Body Control Module Control Unit NU5T-15604-KACN

€222.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5H0945208A-2

VW Golf Gti CD1 LED Tail Light Rear Lamp Cable Plug Wire Right O/S 5H0945208A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L6971694H

Volkswagen Touareg 7L Rear Door Wiring Loom Harness Cable 7L6971694H

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C8941754R-2

Volkswagen Passat CC Front Headlight Wiring Harness Cable Right O/S 3C8941754R

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. MB3T-14A411-SLC

VW Volkswagen Amarok NF Wiring Harness Loom Cable MB3T14A411SLC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7CA971819B

VW Crafter SY AdBlue Tank Wiring Loom 2.0 TDI Diesel 103kW 140HP 7CA971819B

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0907530AC

Volkswagen Golf Mk7 Gateway Control Unit Module 5Q0907530AA

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0937503-1

Volkswagen Touareg 7L Relay Housing Plate Module Control Unit 7L0937503

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5K0907115-3

Volkswagen Golf 5K GTI 2.0 TFSI CCZB 211HP Engine Control ECU 5K0907115 Manual

€379.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0971349AM

VW Golf Mk6 Scirocco Mk3 Starter Wiring Harness Cable 1K0971349AM

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 04L907309D-2

VW Golf VII 5G 2.0 TDI CRLB 150HP Engine Control Unit ECU Kit 04L907309D Manual

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0915418F

VW Volkswagen Golf Mk6 HV Battery Jacket Cover Housing 1K0915418F

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0035186P

VW Volkswagen Golf Mk5 Passat B6 Radio CD Player Head Multimedia Unit 1K0035186P

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L6971121N

Volkswagen Touareg 7L Front Door Wiring Loom Harness Passenger's Side 7L6971121N

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1Y0951177

VW Volkswagen New Beetle Alarm Motion Detector Sensor Module Unit 1Y0951177

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1Q0951177A

VW Volkswagen Eos 1F Radar Motion Sensor Control Unit Module 1Q0951177A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2K0971813B

VW Volkswagen Caddy 2k Ultrasound Sensor Alarm Sensor Pearl Grey 2K0971813B

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4L0910732F

Volkswagen Caddy SB Bluetooth Module Control Unit 4E0035723

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5G2941753D-2

VW Volkswagen Golf VII MK7 Headlight Lamp Front Left N/S Harness Loom 5G2941753D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03G906016GJ-1

Volkswagen Golf V 1K 2.0 SDI BDK 75HP Engine Control ECU Kit 03G906016GJ Manual

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5G2941754D-2

Volkswagen Golf MK7 Headlight Lamp Front Right O/S Harness Loom Wire 5G2941754D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. MB3G-12C550-CG

VW Volkswagen Amarok Mk2 Glow Plug Relay Unit Module ECU MB3G-12C550-CG

€256.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 0C8927769AG

Porsche Cayenne 92A Automatic Transmission Control Module 3.0 Diesel 0C8927769AG

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2E0057163L

Volkswagen Crafter 2E Radio CD Player Head Unit Audio Player 2E0057163L

€208.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. P1WT-14H076-CGG

VW Volkswagen Amarok Mk2 Control Unit Module ECU P1WT-14H076-CGG

€450.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N0035552K

VW Tiguan 5N Antenna Amplifier Module Control Right O/S Unit 5N0035552K

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5K0959434A

Volkswagen Sharan 7N Keyless Kessy Control Module ECU Unit 5K0959434A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5K0907539A

Volkswagen Golf Gti 5k Sun Detection Sunlight Sensor Module Unit 5K0907539A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0971230AE

Volkswagen Golf Mk7 Audi A3 S3 8V Alternator Wiring Loom 5Q0971230AE

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3AA971154

VW Volkswagen Passat B7 Aux Input In Wiring Plug Port Loom Harness 3AA971154

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0909606D

Volkswagen Touareg 7L Front Impact Crash Sensor Right Left N/O/S 7L0909606D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C5945095H-1

VW Passat B6 Rear Tail Light Lamp Wiring Harness Cable Left N/S 3C5945095H

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1T0035577AE

VW Volkswagen Touran 1T Aerial Antenna Amplifier Unit Module 1T0035577AE

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0907530BQ

Volkswagen Caddy Mk4 Gateway Control Module Unit ECU 7N0907530BQ

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C0905219B

VW Volkswagen Passat B7 Engine Ignition Starter Switch 2.0 TDI CFFB 3C0905219B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0937085T

Volkswagen Golf Mk7 Body Control Module BCM 2.0 TFSI 5Q0937085T

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5CU971095

Volkswagen Jetta A6 Bumper Cable Wiring Harness Loom 5CU971095

€42.95

Free delivery: Aug 7 – 11

If paid before 14:00

Part no. 070903139X

Volkswagen Transporter T5 Alternator 14V 150A 2.5 TDI AXE 070903139X 070903024A

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 000051446C

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0937084M

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

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1T0035577AF

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2K7035869A

Volkswagen Crafter Sy Caddy 2021 Radio Navigation Sat Nav Head Unit 2K7035869A

€284.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K8955557

Volkswagen Scirocco Mk3 Door Crash Impact Pressure Sensor Unit 1K8955557

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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