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 Golf Mk8 Rear Door Cable Harness Wiring Loom Right O/S 5H9971694S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0907539

VW Volkswagen Golf Mk6 5K Dashboard Light Sun Solar Sensor Unit 5K0907539

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K0971558B

VW Volkswagen Caddy 2k Door Wire Harness Cable Front Right O/S 2K0971558B

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906022DB

Volkswagen Golf Variant AJ5 Engine ECU 140HP 2.0 Diesel CBDB 03L906022DB Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6959542A

Volkswagen Touareg 7P Steering Wheel Multifunction Control Module 7P6959542A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA962133E

Volkswagen Golf 5G Keyless Entry Module Aerial Antenna 5WA962133E

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. RHD-3C2971111R

Volkswagen Passat CC Servotronic Wiring Power Steering PAS Cable Wire 3C2971111R

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA907727AB

VW Volkswagen Caddy SB Air Conditioning Climate Control Module ECU 5WA907727AB

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1T0907539C

Volkswagen Touran 1T Dashboard Solar Sun Sensor 1T0907539C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1KM915333

Volkswagen New Beetle Jetta A6 Battery Tray Housing Bracket Mount 1KM915333

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Q0971120AP

VW Eos 1F Front Door Wiring Loom Harness Cable Drivers Side O/S 1Q0971120AP

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2E0971237G

Volkswagen Crafter 35 Sprinter Negative Battery Wiring Cable Lead 2E0971237G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0035504A

Volkswagen Golf R Mk7 Toll Pay Module Road Toll Sender Receiver Unit 8V0035504A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3D0919283C

Volkswagen VW Phaeton 3D PDC Parking Sensor Control Unit Module 3D0919283C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5971691

VW Volkswagen Caddy 2K Sliding Door Wiring Loom Harness Cable Left N/S 2K5971691

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0945096N-2

Volkswagen VW Polo 6R Rear Tail Light Side Panel Lamp Wiring Left N/S 6C0945096N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906018FC-3

Volkswagen Golf Mk5 2.0 TDI BMN 170HP Engine Control ECU Kit 03G906018FC Manual

€156.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L903023M

Volkswagen Tiguan Mk2 Golf Mk7 Crafter Mk2 Alternator 180A 14V 2.0TDI 03L903023M

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6971693E

Volkswagen Touareg 7L Rear Door Wiring Loom Harness Left Right N/O/S 7L6971693E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7N0971104B

Volkswagen Sharan 7N Rear Bumper PDC Parking Sensor Wiring Loom Cable 7N0971104B

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03E971612AJ

Volkswagen Polo 6R Engine Wiring Harness Cable Loom 1.2 Petrol CGP 03E971612AJ

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 191906383C-2

Audi VW Volkswagen Seat Skoda Relay Unit Module 12V 20A 4 Pins 191906383C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0959433AJ

Volkswagen Passat CC Comfort Unit Convenience System Control ECU 3C0959433AJ

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0945095AC-2

VW Polo Mk5 Tail Lamp Trunk Lid Light Wiring Harness Rear Left N/S 6R0945095AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6945096P-2

Volkswagen Touareg 7L Rear Tail Light Lamp Wiring Harness Right O/S 7L6945096P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3D0919887E

VW Volkswagen Phaeton 3D Head Unit Navigation Control Unit CD 3D0919887E

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. ML3A-5L200-AD

Volkswagen Amarok Mk2 DPF Filter Pressure Sensor 3.0 TDI ML3A-5L200-AD

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6971121H

Volkswagen Touareg 7L Front Door Wiring Loom Harness Driver's Side 7L6971121H

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K0907496A

VW Volkswagen Caddy 2k Sliding Door Contact Connector Plate Right O/S 2K0907496A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906021AQ-1

VW Caddy 2K 1.9 TDI BLS 103HP Engine Unit ECU Kit Manual Keys 03G906021AQ

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0035558

Volkswagen Jetta A6 USB Adapter Wiring Harness Lead Cable Connector 5N0035558

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0972136

VW Volkswagen Golf R Mk7 Cover TV Tuner Cover Top Lid Bracket Holder 5G0972136

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6907566A

Volkswagen Touareg 7P Lane Change Assist Module Control Unit Master 7P6907566A

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0937548

Volkswagen Passat CC Rear Tailgate Fuse Box Power Distribution 3C0937548

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AF035552

VW Volkswagen Passat B7 Radio Aerial Antenna Amplifier Left N/S 3AF035552

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937125B

Volkswagen Golf Sportsvan Fuse Box Engine Compartment Relay Unit 5Q0937125B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5941591AJ

Volkswagen Golf Mk7 5G Headlight Ballast Module Left Right N/O/S 7P5941591AJ

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0959795P

VW Touareg 7P Rear Door Module Control Unit Left Right N/O/S 4H0959795P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C5971243

Volkswagen Passat CC Negative Battery Terminal Cable 3C5971243

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6971120

Volkswagen Touareg 7L Front Door Wiring Loom Harness Passenger's Side 7L6971120

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AM911023B

Volkswagen Scirocco Mk3 Starter Motor DSG Gearbox 1.4 TSI CAVD 0AM911023B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 853919562

VW Volkswagen Golf Mk4 1J MAP Pressure Sensor Control Unit 853919562

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5C0959655D

Volkswagen Golf MK6 Air Module Control Unit ECU 5C0959655D

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K7858247

VW Volkswagen Caddy SB Dashboard End Cover Cap Trim Left N/S Black 2K7858247

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7LA971411E

VW Volkswagen Transporter T6 Power Steering Oil Sensor Wiring Harness 7LA971411E

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J0035411F

VW Volkswagen Golf Mk4 Front Tweeter Speaker Right O/S Side 1J0035411F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7C0937517AC

VW Crafter SY Fuse Box Distribution Relay Module Housing Bracket 7C0937517AC

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C906027DA

VW Touran 1T 1.4 TSI CAVC 140 HP Engine Module Unit ECU 03C906027DA Automatic

€146.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H9971693L

VW GOLF GTI CD1 Door Wiring Loom Harness Wire Rear Left N/S 5H9971693L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0035020C

VW Golf MK7 5G GTI Infotainment Multimedia Head Control Unit 5G0035020C

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6971121J

Volkswagen Touareg 7L Front Door Wiring Loom Harness Passenger's Side 7L6971121J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C8035279S

VW Volkswagen Passat CC Multimedia Stereo Radio CD Player Head Unit 3C8035279S

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5NA945207C-2

VW Volkswagen Tiguan Mk2 Rear Tail Light LED Wiring Left Nearside N/S 5NA945207C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7LA971794A

Volkswagen Transporter T6 Starter Motor Wiring Harness Cable Earth 7LA971794A

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0963553

VW Passa B6 Seat Occupied Sensor Wiring Cable Harness Module 3C0963553

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5R3915343D

VW Volkswagen Caddy SB Battery Bracket Support Mount Holder Carrier 5R3915343D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425B-26

Volkswagen Golf Mk7 R 2.0 TFSI DJHA 310HP Engine ECU Kit BCM Key 04L907309B

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0941828B

Volkswagen Touareg 7P 3.0 TDI Fuse Box Control Module 7P0941828B

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0907159A

Volkswagen Golf Mk6 Impact Sound Control Module Unit 5K0907159A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K8980551

VW Scirocco Mk3 Reversing Camera Rear View Parking Cable Wiring 1K8980551

€203.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0971065

Volkswagen Polo 6R Parking Sensor Wiring Rear Bumper PDC Loom Cable 6R0971065

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1T0035530

VW Volkswagen Touareg 7L Antenna Aerial Amplifier Booster Unit 1T0035530

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906023A-1

Volkswagen Golf 5k 1.6 TDI 90HP CAYB Engine Control Unit ECU 03L906023A Manual

€156.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5NA945308E-2

Volkswagen Tiguan Mk2 Tailgate Inner LED Light Lamp Wiring Right O/S 5NA945308E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6907357B

Volkswagen Golf Mk7 Headlight Head Lamp Range Control Unit Module ECU 7P6907357D

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L907309K-4

Volkswagen Caddy Mk3 2.0 TDI DFSD 102HP Engine Control ECU Kit 04L907309K Manual

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6035195

VW Volkswagen Touareg 7L Radio Player Navigation Sat Nav Head Unit 7L6035195

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6035552M

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Left N/S 7P6035552M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0907651

Volkswagen VW Golf Mk6 1K Acceleration Sensor 3C0907651

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1KM955557

Volkswagen Golf Mk6 Front Crash Impact Sensor Module Left Right N/O/S 1KM955557

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971349MR

Volkswagen Scirocco Mk3 Alternator Wire Wiring Cable Harness Loom 1K0971349MR

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA937132A

VW Volkswagen Caddy SB Golf GTI CD1 Fuse Box Cover Top Lid Housing 5WA937132A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0937132F

Vw Golf 5 Audi A3 8P Seat Leon 1P1 Fuse Box Cover Trim Panel Housing 1K0937132F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0937503A

Volkswagen Touareg 7L Fuse Box Relay Control Unit Module 7L0937503A

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0907159B

Volkswagen Golf Mk7 5G Body Sound Control Module ECU 5G0907159B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8S0972752

VW Volkswagen Tiguan 5n Passat B8 Wiring Loom Harness Plug Conctact 8S0972752

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0907239C

Audi A5 S5 RS5 F5 A4 S4 RS4 B9 Telematic Module Bracket Holder Mount 8W0907239

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907530AG

Skoda Octavia 5E Mk3 Superb Mk3 Gateway Control Unit Module 5Q0907530AG

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0919129

Volkswagen Golf R Mk7 A3 8V TV Tuner Control Unit Module ECU 8V0919129

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0919813

VW Volkswagen Golf R Mk7 Toll Reader Device Module Chip Card Reader 8V0919813

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G6867657

Volkswagen Golf 5G Mk7 Rear Lamp Light Bulb Cover Left N/S 5G6867657

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C8971694DM

Volkswagen Passat CC Rear Door Wiring Harness Cable Right O/S 3C8971694DM

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. P1WA-7P238-GA

VW Amarok Mk2 Transfer Case Box Control Unit Module ECU ECU P1WA-7P238-GA

€222.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA907275D

Volkswagen Passat B7 Tyre Pressure Control Unit Sensor Module 3AA907275D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0971225H

Volkswagen Touareg 7L Audi Q7 4L Battery Positive Cable Terminal 7L0971225H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3G9945207J-1

VW Passat B8 Estate Rear Tail Light Wiring Harness Cable Left N/S 3G9945207J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 05L907309AH-1

Volkswagen Crafter SY 2.0 TDI 140HP Engine Control ECU Kit 05L907309AH Manual

€503.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6907530C

VW Volkswagen Touareg 7P MK2 Gateway Control Unit Module ECU 7P6907530C

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0971879

Volkswagen Golf Mk7 5G R Wiring Harness Loom Guide Cover Mount 5Q0971879

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA971230H

Volkswagen Passat B7 Battery Starter Alternator Wiring Loom 2.0 TDI 3AA971230H

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6R0919433

VW Volkswagen Audi Seat Skoda Glow Plug Relay Unit Black 505 7 Pins 6R0919433

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02Z911023E

Volkswagen New Beetle 1.4 TSI Petrol Engine Starter Motor 02Z911023E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5QS907530D

Volkswagen Crafter SY Gateway Control Module Unit 5QS907530D

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0803219C

Battery Clamp VW Golf 8 CD1 Audi A3 8Y Battery Base Bracket Holder 5Q0803219C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0919603B-1

Volkswagen Polo 6C 6R Radio Control Navigation Multimedia Display 6C0919603B

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0035341E

VW Volkswagen Passat B7 Touran 1T Multimedia Interface Module Socket 5N0035341E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0927165F

Volkswagen Tiguan 5N Golf Mk7 Audi A3 8V Fuse Box Cover Panel 5Q0927165F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C4971693QB

Volkswagen Passat B6 Door Wiring Loom Harness Rear Left N/S 1.6 TDI 3C4971693QB

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

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