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 Volkswagen Touareg 7P Door Wiring Harness Rear Left Right N/O/S 7P6971694F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0035342G-1

VW Scirocco Mk3 Polo Mk5 Multimedia Electronic Control Module ECU 5N0035342G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7N0951253

VW Volkswagen Scirocco Mk3 Power Starter Motor Relay 12V 50A Plug 7N0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P2941006-2

Volkswagen Touareg 7P Front Headlight Headlamp Wiring Cable Right O/S 7P2941006

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937085AC

VW Volkswagen Golf GTI Mk7 Body Control Module BCM CHHN Automatic 5Q0937085AC

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0937615A

Volkswagen Polo Mk6 Fuse Relay Box Power Supply Unit 2Q0937615A

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5CH971120E

Volkswagen Jetta Mk6 Front Door Wiring Harness Cable Passenger Side 5CH971120E

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2H0867485A

Volkswagen Amarok 2H Roof Headliner Trim Storage Alarm Module Unit 2H0867485A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5QC971566

VW Volkswagen Golf Cd1 Passat 3G AC Control Wiring Loom Harness 5QC971566

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7C0937517AL

VW Crafter SY Fuse Box Distribution Relay Module Housing Bracket 7C0937517AL

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7N0937311

Volkswagen Passat B7 Sharan 7N Electrical Fuse Relay Box 7N0937311

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0915418A

Audi A3 S3 8P VW Volkswagen Golf Mk5 HV Battery Jacket Cover Housing 1K0915418A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0915343C-1

Volkswagen Polo Mk6 AW Battery Tray Power Distribution Unit 2Q0915343C

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G4971693K

Volkswagen Golf Mk7 5G Rear Door Wiring Harness Cable Loom Left N/S 5G4971693K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AF945094J-2

VW Passat B7 Estate Rear Boot Lid Wiring Inner Light Lamp Right O/S 3AF945094J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971349B

VW Golf Mk6 Seat Leon Mk2 Alternator Main Cable Wiring Harness Loom 1K0971349B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907686B

Volkswagen Golf R 5G Blind Spot Control Module Unit ECU 5Q0907686B

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6Q0959433H

Volkswagen Polo Mk4 9N Central Locking Comfort Control Unit Module 6Q0959433H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02Z911024

Volkswagen Golf Mk7 Jetta A6 Scirocco Mk3 Starter Motor 02Z911024

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0907521

Heater Resistor Volkswagen VW Touran 1T Blower Motor Fan Resistor 3C0907521

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7N0959792J

VW Volkswagen Sharan 7N Passenger's Side Door ECU Module Control Unit 7N0959792F

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0C8927750BP

Volkswagen Touareg Mk2 7P Gearbox Control Unit Module ECU 0C8927750BP

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0937089C

Volkswagen Amarok 2H Body Control Module BCM Unit 3.0 Diesel 7E0937089C

€203.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Q0919283

Volkswagen EOS Park Aid Sensors PDC Control Module Unit ECU 1Q0919283

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. N1XT-14D338-ADC

VW Volkswagen Amarok NF Wiring Harness Loom Cable N1XT-14D338-ADC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937086BK-1

Volkswagen Golf Sportsvan Body Control Comfort Unit Module BCM Unit 5Q0937086BK

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5CH971121E

Volkswagen Jetta A6 Mk6 Front Door Wiring Harness Cable Driver Side 5CH971121E

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0907655D

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0971349

Audi S1 8X Battery Cable Loom Wiring Harness 2.0 TFSI CWZA Quattro 6C0971349

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA907007K

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

€47.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5C5971104F

Volkswagen New Beetle Mk3 Rear Parking Wiring Loom Harness Cable 5C5971104F

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0971104C

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 2Q0971537AG

Volkswagen Polo GTI AW1 Battery Cable Grounding Line Wiring Harness 2Q0971537AG

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971349DH

Volkswagen Caddy Maxi 2C Alternator Wiring Harness Loom 1.6 TDI CAYD 1K0971349DH

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5N0035342F-1

Volkswagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342F

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 4H0907064JH

Volkswagen Touareg 7P BCM Body Comfort Convenience Module Unit ECU 4H0907064JH

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5972175A

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7H6970187

Volkswagen Transporter T5 Caravelle Fuse Box Battery Terminal TDI 7H6970187

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0959434E

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

€32.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5K0907115

Volkswagen Golf 1K GTI 2.0 TFSI CCZB 211HP Engine Control ECU 5K0907115 Manual

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0919275-RES

Volkswagen Sharan 7N PDC Parking Distance Sensor Reflex Silver - A7W 4H0919275

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0937545A

Volkswagen Transporter T5 Main Fuse Socket Connector Housing Bracket 7E0937545A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C8937049AC-1

Volkswagen Tiguan 5N Module BCM Body Control Unit Module ECU 3C0937049E

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0915423

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6971121D

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K8971104D

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

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937084DF

Volkswagen Golf 5G Body Control Module Onboard Unit 5Q0937084DF

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0907115-4

Volkswagen Scirocco Mk3 2.0 TSI CCZB 211HP Engine ECU Kit 5K0907115 Automatic

€474.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0937550B

Volkswagen Polo Gti AW1 Fusebox Power Distribution 2.0 TFSI Petrol 2Q0937550B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K8971148J

Volkswagen Scirocco Mk3 Tailgate Window Washer Wiring Harness Cable 1K8971148J

€47.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 1Q0951172A

Volkswagen Eos Alarm Sensor Control Module Unit 1Q0951172A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9065450024

Volkswagen Crafter AdBlue Metering Control Unit ECU 2.0 TDI Diesel A9065450024

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7L6971693P

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 3D0972072AG

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

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0907530Q

Volkswagen VW Golf Mk7 Gateway Control Unit Module ECU GW MQB High 3Q0907530Q

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 2Q0907686E

VW Golf Gti CD1 Blind Spot Lane Change Control Module Rear Right O/S 2Q0907686E

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0035341F

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907159D

Volkswagen Golf Mk7 Sound Actuator Control Unit Module 4H0907159A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0915181G

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0131552D

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7L6971694H

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. MB3T-14A411-SLC

VW Volkswagen Amarok NF Wiring Harness Loom Cable MB3T14A411SLC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0971391J

Volkswagen Golf 6 Crash Impact Sensor Wiring Loom Plug Connector 5K0971391J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C8035279B

Volkswagen Scirocco Mk3 Passat CC Sat Nav Radio CD Player Head Unit 3C8035279B

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907530AC

Volkswagen Golf Mk7 Gateway Control Unit Module 5Q0907530AA

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971349AM

VW Golf Mk6 Scirocco Mk3 Starter Wiring Harness Cable 1K0971349AM

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0937087L

Volkswagen Golf Mk6 Body Control Unit Module BCM ECU 1K0937087L

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0915418F

VW Volkswagen Golf Mk6 HV Battery Jacket Cover Housing 1K0915418F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6971121N

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Y0951177

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Q0951177A

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K0971813B

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

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0910732F

Volkswagen Caddy SB Bluetooth Module Control Unit 4E0035723

€51.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 518971856

Volkswagen T-Roc Audi Q3 F3 Gateway Control Unit Bracket Mount 518971856

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 0C8927769AG

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

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2E0057163L

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

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0971250AJ

Audi Q3 F3 VW Tiguan 5N Seat Alhambra Battery Negative Earth - Cable 5N0971250AJ

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5N0035552K

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0971230AE

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

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