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.

More information

Find it faster

Match to your vehicle

Make

VW Golf Gtd Engine Control Unit ECU CUNA 184HP 2.0 Diesel 04L907309R Manual KIT

€165.95

Part no. 7C0971067D

Volkswagen Crafter TR Parking Assist Wiring Harness Adapter Cable 7C0971067D

€28.95

Part no. 038903143AG

VW Polo 9N MK4 Fabia II 1.4 TDI BMS Alternator Mount Support Bracket 038903143AG

€23.95

Part no. 04E907309BL-1

VW Golf Mk7 5G 1.2 TFSI CYVA 86HP Engine Control Unit ECU Kit 04E907309A Manual

€222.95

Part no. 04E906027CL

VW Golf Mk7 Audi Q3 8U 1.4TSI CHPB 150HP Engine Unit ECU 04E906027CL Automatic

€218.95

Part no. 06K907425B-16

VW Golf VII 2.0 TFSI DJHA 310HP Quattro Engine Unit ECU Kit 06K907425B Automatic

€208.95

Part no. GN15-14C676-AA

Volkswagen Amarok MK2 Impact Sensor Front Left Right N/O/S Door GN15-14C676-AA

€23.95

Part no. 5H0907159D

Volkswagen Golf Mk8 GTI Impact Sound Control Unit Module 5H0907159D

€85.95

Part no. 5G0959354

VW Volkswagen Golf Mk7 5G Front Crash Impact Sensor SRS Control Unit 5G0959354

€23.95

Part no. 038971782C

VW Passat B6 Audi A3 8P Glow Plug Rail Bridge Wiring Loom Harness 038971782C

€80.95

Part no. 1Q0945094C-1

Volkswagen Eos 1F Rear Tail Light Lamp Wiring Cable Inner Right O/S 1Q0945094C

€23.95

Part no. 5H0868159

Volkswagen Golf R CD1 Door Speaker Grille Cover Rear Left N/S 5H0868159

€23.95

Part no. 2K5971692A

Volkswagen Caddy Maxi Mk4 Sliding Door Wiring Loom Harness Right O/S 2K5971692A

€23.95

Part no. 1K8971104S

Volkswagen Scirocco Mk3 Rear Number Plate Wiring Harness Cable Loom 1K8971104S

€23.95

Part no. 5Q2971111AN

VW Volkswagen Golf Gtd Power Steering Rack Wiring Harness Loom Wire 5Q2971111AN

€118.95

Part no. 1K0959772

Volkswagen VW Touran 1T Seat Heating Control Unit Module ECU 1K0959772

€23.95

Part no. 7P6971693A

Volkswagen Touareg 7P Door Harness Wiring Loom Rear Left Right N/O/S 7P6971693A

€28.95

Part no. 5K0945094AC-1

VW Volkswagen Golf 5K Mk6 Rear Tail Light Lamp Wiring Inner Left N/S 5K0945094AC

€23.95

Part no. 2Q0959772

Volkswagen Polo Mk6 AW Seat Ibiza Mk5 Heated Seat Module Control Unit 2Q0959772

€23.95

Part no. 5N0035341B

Volkswagen Golf 5 Multimedia Interface Module Box 5N0035341B

€23.95

Part no. 5G0945096M-1

Volkswagen Golf Mk7 Rear Tail Light Lamp Outer Right O/S Harness Loom 5G0945096M

€23.95

Part no. 3AA919041

VW Sharan 7N Voltage Stabilizer Converter Electric Control Unit Module 3AA919041

€23.95

Part no. 5N0945094H-2

Volkswagen Tiguan 5N Rear Tail Light Wiring Harness Cable Right O/S 5N0945094H

€23.95

Part no. 3G0971641B

VW Volkswagen Passat B8 Center Console Wiring Loom Harness Cable 3G0971641B

€23.95

Part no. 4F0035720B

VW Volkswagen Golf R Mk7 Road Toll Sender Receiver Cover Lid Top 4F0035720B

€42.95

Part no. 06K903015B

VW Volkswagen Golf Mk7 Alternator Generator 2.0 TSI Petrol Engine 06K903015B

€85.95

Part no. 7P6907530R

VW Volkswagen Touareg 7P Gateway Control Unit Module ECU 7P6907530R

€28.95

Part no. 1K8945096H-1

Volkswagen Scirocco Mk3 Rear Tail Light Lamp Wiring Cable Right O/S 1K8945096H

€23.95

Part no. 7E0971794D

Volkswagen Transporter T6 Cable Wiring Harness Positive Plus 7E0971794D

€23.95

Part no. 5G0971175B

VW Volkswagen Golf R 7 Rear Tailgate Boot Lid Wiring Adapter Loom 5G0971175B

€28.95

Part no. 5N0971693AD

Volkswagen Tiguan Mk1 Rear Door Wiring Loom Harness Left N/S 5N0971693AD

€23.95

Part no. 5N0971349AP

VW Sharan 7N Positive Plus + Battery Alternator Wiring Harness Cable 5N0971349AP

€23.95

Part no. 3AA971694CB

Volkswagen Passat B7 Door Wiring Loom Harness Rear Right O/S 3AA971694CB

€23.95

Part no. 1T1937503A

Volkswagen Touran 1T Fuse Box Relay Control Unit Bracket Module 1T1937503A

€23.95

Part no. 1Q0945093C-1

VW Volkswagen Eos 1F Rear Tail Light Lamp Wiring Cable Inner Left N/S 1Q0945093C

€23.95

Part no. N1WT-19J252-AB

Volkswagen Amarok Nf USB Connector Port Socket Electronic Module N1WT-19J252-AB

€66.95

Part no. 7N0971228G

Volkswagen Sharan 7N Positive Plus + Battery Cable Wiring Harness 7N0971228G

€23.95

Part no. 04L907309G-1

Volkswagen New Beetle 2.0 TDI CUUA 110HP Engine Unit ECU Kit 04L907309G Manual

€222.95

Part no. 3G0971689

Volkswagen Passat B8 3G Door Wire Cable Harness Loom Rear Left N/S 3G0971689

€70.95

Part no. 7L0971767

Volkswagen Touareg 7L Washer Reservoir Bottle Wiring Harness Loom 7L0971767

€23.95

Part no. 7E0971478C

Volkswagen Transporter T5 Additional Heater Wiring Harness Loom Cable 7E0971478C

€42.95

Part no. N1XT-14630-TFE

VW Volkswagen Amarok NF Front Door Harness Wiring Passenger Side N1XT14630TFE

€42.95

Part no. 5G4971694B

Volkswagen Golf Mk7 Rear Door Wiring Harness Cable Right O/S 5G4971694B

€37.95

Part no. 03L906018DR

Volkswagen Touran 1T 2.0 TDI CFHC 140HP Engine ECU 03L906018DR Automatic

€113.95

Part no. ML3H-19E907-AB

Volkswagen Amarok Mk2 Rain Temperature Humidity Sensor ML3H-19E907-AB

€23.95

Part no. 02M911021B

VW Volkswagen Golf Mk6 Tiguan Mk1 Audi Q3 Mk1 VALEO Starter Motor 02M911021B

€32.95

Part no. 5G4971693B

Volkswagen Golf Mk7 Rear Door Wiring Harness Cable Left N/S 5G4971693B

€37.95

Part no. 3C4971294NL

Volkswagen Passat B6 Control Module Wiring Harness 3C4971694NL

€37.95

Part no. 7L6035577A

VW Volkswagen Touareg 7L Antenna Aerial Amplifier Control Unit Module 7L6035577A

€23.95

Part no. 5R3941329C

Volkswagen Caddy SB AdBlue Module Control Relay 2.0 TDI 5R3941329C

€61.95

Part no. 7P6907107B

Volkswagen VW Touareg 7P Image Processing Module Control Unit 7P6907107B

€203.95

Part no. 6C0907159B

Volkswagen Polo 6C Body Sound Impact Control Module ECU 6C0907159B

€23.95

Part no. 7P0907311-1

Volkswagen Touareg 7P 3.0 TDI CASD 204HP Engine Unit ECU Set 7P0907311 Automatic

€693.95

Part no. 2G0959578B

Volkswagen Polo Mk6 Door Wing Mirror Adjustment Motor Left N/S 2G0959578B

€23.95

Part no. 5R3907361

Volkswagen Caddy SB Fuse Relay Box Housing 2.0 TDI 5R3907361

€208.95

Part no. MU5T-17D547-AB

Ford Transit Custom Ranger Rain Sensor Control Unit MU5T-17D547-AB

€28.95

Part no. 5G9035577B

Volkswagen Golf 5G Antenna Amplifier Module Unit Tailgate Left N/S 5G9035577B

€66.95

Part no. 5M0035724

Volkswagen VW Golf Mk6 1K Aux Socket Port Switch 5M0035724

€23.95

Part no. 5WA962133B

VW Volkswagen Golf Mk8 CD1 Keyless Entry Module Aerial Antenna Unit 5WA962133E

€23.95

Part no. 03L906012Q-2

Volkswagen Crafter 2.0 TDI CKTB 109HP Engine Module ECU Kit 03L906012Q Manual

€393.95

Part no. 3AF035552E

VW Volkswagen Passat B7 Radio Aerial Antenna Amplifier Right O/S 3AF035552E

€23.95

Part no. 5N0971369K

VW Tiguan 5N Front Seat Backrest Adjustment Wiring Harness Left 5N0971369K

€28.95

Part no. 1Q0971557F

Volkswagen Eos 1F Front Door Wiring Loom Driver Side 1Q0971557F

€32.95

Part no. 1K0951253A-1

Volkswagen Audi Seat Skoda Glow Plug Relay Unit 4 Pin Black 460 1K0951253A SET

€23.95

Part no. 7N0907530AH

Volkswagen Scirocco Mk3 Central Gateway Control Module 7N0907530AH

€51.95

Part no. 5GV051629E

Volkswagen Smart DataPlug Bluetooth OBD Smartphone Connect Dongle 5GV051629E

€23.95

Part no. 1K0971558K

VW Volkswagen Golf Gti 1k Door Wiring Loom Harness Front Right O/S 1K0971558K

€23.95

Part no. J0VDC2H01

Volkswagen Sharan 7N Radio Navigation DVD Screen Head Unit J0VDC2H01

€294.95

Part no. 7L0971235

Volkswagen Touareg 7L Negative Battery Terminal Cable Wiring Loom 7L0971235

€23.95

Part no. 1K0951253A

VW Audi Seat Skoda Glow Plug Relay Unit Engine Supply Black 4 Pins 1K0951253A

€23.95

Part no. 5H0971104P

Volkswagen Golf Mk8 CD1 Parking Sensor Wiring Rear Bumper Loom Cable 5H0971104P

€32.95

Part no. 03L906018GF

VW Scirocco Mk3 2.0 TDI 140HP CFHC Engine Control ECU Kit 03L906018GF Manual

€227.95

Part no. 5N0035342B-1

VW Volkswagen Touran Golf Polo Interface Module Multimedia Control 5N0035342B

€23.95

Part no. 5N2941005C-2

Volkswagen Tiguan 5N Headlight Wiring Cable Adapter Front Left N/S 5N2941005C

€23.95

Part no. 7P0937132A

VW Volkswagen Touareg 7P Fuse Box Control Unit Cover Trim Panel 7P0937132A

€23.95

Part no. 03E906019M

Volkswagen Polo 6R 1.2 Petrol CGPB 60HP Engine Control ECU Manual 03E906019M

€42.95

Part no. MB3T-14A411-SRC

VW Volkswagen Amarok NF Ford Ranger Cab Wiring Harness Loom MB3T14A411SRC

€23.95

Part no. 4H0907064CH

Volkswagen Touareg 7P BCM Body Comfort Module Control Unit 4H0907064CH

€85.95

Part no. 7H0971691Q

Volkswagen Transporter T5 Sliding Side Door Wiring Loom Harness Cable 7H0971691Q

€28.95

Part no. 7L6951171A

Volkswagen Touareg 7L Ultrasonic Alarm Monitor Sensor Control Unit 7L6951171A

€23.95

Part no. 5K0907159B

VW Golf Mk6 Alarm Signal Sound Impact Body Control Module Unit 5K0907159B

€23.95

Part no. 5NA945208G-2

VW Volkswagen Tiguan 5N Rear Tail Light Outer Right O/S Harness Loom 5NA945208G

€23.95

Part no. 3C9971104B

Volkswagen Passat B6 Rear Bumper Parking Sensor Wiring Loom Harness 3C9971104B

€23.95

Part no. 5K0035156A-1

VW Volkswagen Touran 1T Stereo Radio CD Changer Player Head Unit 5K0035156A

€23.95

Part no. 5TA998477

Volkswagen Tiguan 5N LED Daytime Running Light Headlight Control Unit 5TA998477

€47.95

Part no. 5N0959351B-1

Volkswagen Tiguan 5N Sharan 7N Impact Crash Sensor Left Right N/O/S 5N0959351B

€23.95

Part no. A9069009100

Volkswagen Crafter 35 Radio CD Player Navigation Unit Screen Display A9069009100

€232.95

Part no. P1WT-19H517-AE

VW Volkswagen Amarok Mk2 Auto Brake Trailer Module Control Unit P1WT-19H517-AE

€123.95

Part no. 7P6035209

Volkswagen Touareg 7P Radio Navi CD Player Head Unit Mount Bracket 7P6035209

€23.95

Part no. PJ7T-19G490-BB

Ford Ranger Mk6 Volkswagen Amarok Mk2 Parking Camera PJ7T-19G490-BB

€142.95

Part no. ML34-13C148-AE

VW Volkswagen Amarok NF Front Lamp Headlight Control Unit Module ML3413C148AE

€70.95

Part no. 02M911023M

Volkswagen VW Golf Mk5 1.6 2.0 GTI Petrol Engine Starter Motor 02M911023M

€23.95

Part no. 5H9971694S

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

€23.95

Part no. 5K0907539

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

€23.95

Part no. 2K0971558B

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

€32.95

Part no. 03L906022DB

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

€284.95

Part no. 7P6959542A

Volkswagen Touareg 7P Steering Wheel Multifunction Control Module 7P6959542A

€42.95

Part no. 5WA962133E

Volkswagen Golf 5G Keyless Entry Module Aerial Antenna 5WA962133E

€32.95

Part no. 5WA907727AB

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

€80.95

...

Showing 298-396 of 1612 products