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 Passat B7 Battery Starter Alternator Wiring Loom 2.0 TDI 3AA971230H

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L903023B

Volkswagen Passat B7 Alternator Generator 1.6 2.0 TDI Valeo 180A 03L903023B

€51.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 02Z911023E

Volkswagen New Beetle 1.4 TSI Petrol Engine Starter Motor 02Z911023E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5QS907530D

Volkswagen Crafter SY Gateway Control Module Unit 5QS907530D

€94.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 5N0035341E

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

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 7C0955737

Volkswagen Crafter Mk2 Positive Battery Cover Panel 7C0955737

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5H0971385

Volkswagen Golf Mk8 CD1 Rear Seat Couch Wiring Harness Cable Loom 5H0971385

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3AF035552M

Volkswagen Passat B7 Aerial Antenna Booster Amplifier Unit Right O/S 3AF035552M

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q4959392K

VW Volkswagen Crafter TR Door Control Module ECU Front Passenger Side 5Q4959392K

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3D0959759B

VW Volkswagen Phaeton 3D Seat Control Unit ECU Front Passenger Side 3D0959759B

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0951253-2

VW Volkswagen Audi Seat Relay 449 12V 30A Unit Module 4 Pins 1K0951253 X2

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 04E907309A

Volkswagen Golf Mk7 1.4 TSI CXSA Engine Control Unit ECU 04E907309A Automatic

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0907503-5

Audi RSQ3 F3 Headlights Leveling Lamp Height Sensor Headlamp Unit 5Q0907503

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 0C8927750D

VW Touareg 7P Automatic Transmission Module Control Unit ECU 3.0 TDI 0C8927750D

€332.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0959354

Volkswagen Golf 7 Audi A3 8V Front Air Module Crash Impact Sensor Unit 5Q0959354

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. MB3T-14301-BD

VW Amarok Mk2 Battery Negative Minus Cable Connector Wiring Loom MB3T-14301-BD

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1H5951253

Volkswagen Touareg 7L Relay Alternator Alarm Black 4 Pin 12V No 143 1H5951253

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P6035552A

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Right O/S 7P6035552A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5QA919294E

Volkswagen Golf Mk7 5G PDC Parking Sensor Control Module ECU 5QA919294E

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0035507L

VW Volkswagen Scirocco Mk3 Roof Top Antenne Control Unit Module 1K0035507L

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0971068F

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

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8V0919129B

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

€161.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 02Z911024L

VW Volkswagen Golf Mk7 1.6 TDI CLHA Diesel Engine Starter Motor 02Z911024L

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P6035552

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Left N/S 7P6035552

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 0C8927755C

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

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0909605C

Volkswagen Golf Mk5 Air Module Control Module ECU 1K0909605C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0971558C

Volkswagen Golf Mk7 Front Door Wiring Loom Harness Passenger Side 1K0971558C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P6907530F

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K8919465A

Volkswagen Caddy 2K Parking Aid Sensor PDC Control Unit Module ECU 1K8919465A

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5NA971395

Volkswagen Tiguan 5N Door Light Wiring Harness Front Passenger Side 5NA971395

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5M0035577G

Volkswagen Golf Plus 5M Aerial Antenna Boost Amplifier 5M0035577G

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P6907357

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5WA907727AC

Skoda Octavia IV Climate Air Conditioning Control Module Unit 5WA907727AC

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L0941824B

Volkswagen Touareg 7L Fuse Box Module Electrical Relay Control Unit 7L0941824B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5M0907357E

Volkswagen Touran 1T Passat B7 Headlight Control Unit Module ECU 5M0907357E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5N0971694G

Volkswagen Tiguan 5N Rear Door Wiring Loom Harness Right O/S 5N0971694G

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03C903025DX

VW Volkswagen Tiguan Mk1 5N Audi A1 8X Alternator Generator 1.4 TFSI 03C903025DX

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2K5971557C

Volkswagen Caddy 2K Door Wiring Harness Cable Front Left Right O/S 2K5971557C

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03G906021PD-1

Volkswagen Caddy 1.9 TDI BLS 105HP Engine ECU Kit 03G906021PD BCM + Key Manual

€237.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C0035195C

Volkswagen Golf Mk5 Jetta Passat B6 Radio CD Player MP3 Unit 3C0035195C

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4H0919275-NBL

Volkswagen Touran 1T PDC Parking Sensor 4H0919275 Night Blue Metallic - H5X

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 06F903023HX

Volkswagen Golf Mk5 2.0 TFSI Petrol Alternator Generator 06F903023HX

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3Q0971250

Volkswagen Tiguan MK2 Negative Battery Cable Lead Wiring 2.0 TDI 3Q0971250

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6C4971693E

VW Volkswagen Polo 6R Rear Door Harness Wiring Loom Cable Left N/S 6C4971693E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2K5959655B

Volkswagen Caddy Mk4 Air Control Unit Module ECU 2K5959655B

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5N0971858

Volkswagen Tiguan 5N Starter Retainning Plate Holder Bracket Mount 5N0971858

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1T0971085E

Volkswagen Touran 1T Rear Bumper Parking Sensor PDC Wiring Loom 1T0971085E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5G0907451

Volkswagen Golf Mk7 Dashboard Sun Solar Sensor 5G0907451

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C8971557AN

Volkswagen Passat CC Front Door Wiring Loom Harness Right O/S 3C8971557AN

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5M0035507B

Volkswagen Golf Gti 1k Aerial Antenna Amplifier Module Unit 5M0035507B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P6035552N

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Right O/S 7P6035552N

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5WA971794R

VW Golf 8 1.5 eTSI HV Battery Positive Terminal Harness Cable Wiring 5WA971794R

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 02M911024B

Volkswagen VW Golf Mk7 VII Passat B8 Starter Motor Diesel Engine 02M911024B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5NA980611A

Volkswagen Golf 8 CD1 Wireless Phone Charging Center Console Module 5NA980611A

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L0959772

VW Volkswagen Golf Mk5 Phaeton 3D Heated Seat Control Module Unit 7L0959772

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0857925D

Volkswagen Golf Mk5 iPod Dock Storage Sleeve 1K0857925D

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0915335C

Volkswagen VW Golf Mk5 Battery Tray Side Cover Panel Holder 1K0915335C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C8971120CC

Volkswagen Passat CC Front Door Wiring Harness Loom Cable Right O/S 3C8971120CC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0035186AP

Volkswagen Golf Mk6 Passat B7 Stereo Radio CD Player Head Unit 1K0035186AP

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0915181G

Volkswagen VW Golf Mk7 Negative Battery Terminal Cable Wiring 5Q0915181G

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0907361G-1

Volkswagen Golf Mk7 GTI Fuse Relay Box Housing Module Control Unit 5G0907361G

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L6035530B

VW Volkswagen Touareg 7L Aerial Antenna Amplifier Control Unit Module 7L6035530B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6C0907159A

Volkswagen Polo Impact Sound Control Module Unit 6C0907159A

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 06K907425C-2

VW Scirocco Mk3 2.0 TFSI CULA 220HP Engine ECU Kit BCM + Key 06K907425C Manual

€332.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1J0035411G

Volkswagen Golf Gti 1J Rear Door Speaker Loudspeaker Left Right N/O/S 1J0035411G

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L906018GF-3

Volkswagen Scirocco Mk3 2.0 TDI CFHC 140HP Engine Control Unit ECU 03L906018GF

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0955559AB

Volkswagen Golf Mk5 Rain Sensor Front Windscreen Control Unit Module 1K0955559AB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7LA937550A

VW Transporter T6 Fusebox Module Power Distribution Control Module 7LA937550A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C8035195G

VW Volkswagen Caddy Mk2 Radio Head Unit RNS DAB Media Player Unit 3C8035195G

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0971250AM

Volkswagen VW Scirocco Mk3 Negative Battery Terminal Cable Wiring 1K0971250AM

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 0AD927755L

Volkswagen Touareg 7L Transfer Box Control Unit Module ECU Automatic 0AD927755L

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5NA971693K

Volkswagen Tiguan Mk2 Door Wiring Loom Harness Rear Left N/S 5NA971693K

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 06J903023G

VW Volkswagen Polo GTI 6R Golf Mk7 Alternator Generator 14V 140A 6J903023G

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. VW-Remote-Key

VW Passat Radio Remote Control Alarm Key Fob Control Unit Module

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 0AM911023T

Volkswagen Touran 1T 1.4 TSI Petrol Engine Starter Motor 0AM911023T

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0971230KE

Volkswagen VW Caddy 2K Alternator Wiring Loom Harness 1.9 TDI 1K0971230KE

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 038907282

VW Volkswagen Transporter T5 Spark Plug Glow Plug Relay Module Unit 038907282

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5N0971858E

VW Volkswagen Tiguan 5N Starter Retaining Plate Bracket Mount Support 5N0971858E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03N906249A

Volkswagen Tiguan AD1 Coolant Circuit Control Unit 03N906249A

€237.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L0907719

Volkswagen Touareg 7L Anti Theft Alarm System Control Module Unit ECU 7L0907719

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5K0907115K-1

Volkswagen Golf Mk6 Engine Control ECU Kit 2.0 Petrol 235HP 5K0907115K Manual

€569.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2Q0959655AN

Volkswagen Transporter T6 Air Module Sensor Control Unit ECU 2Q0959655AN

€379.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 05E972627B

Volkswagen Golf SV 1.5 TSI DADA Automatic Engine Wiring Harness 05E972627B

€108.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5C6945095H-1

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03G906021AQ

Volkswagen Caddy 2K 1.9 TDI BLS 105HP Engine Control Unit ECU 03G906021AQ Manual

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0907556C

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

€294.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2K0971121AK

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

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3D0937576

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

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 7E0971158A

Volkswagen Transporter T6 Positive Plus Battery Cable 7E0971158A

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. 7E0035156B-1

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

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5G0971104S

Volkswagen Golf Mk7 Rear Bumper PDC Parking Sensor Wiring Loom 5G0971104S

€28.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

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