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

Audi A6 4G Keyless Entry Aerial Antenna Control Unit Module 4H0907247

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0919275B-LAVA

Audi Q2 GA Front Rear Parking Sensor Assist Control Set Lava Blue W5Q 5Q0919275

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 443937105B-1

Volkswagen Audi Skoda Seat Thermal Fuse Relay Amp 15A 12V 443937105B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468

Audi A4 B8 A5 S5 Gateway Diagnosis Interface ECU Data Module 8T0907468G

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0937517E

Audi A6 C8 Relay Voltage Converter Current Relay Control Module 4K0937517E

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 81A971030AF

Audi Q2 GA Door Wiring Loom Harness Front Passenger's Side N/S 81A971030AF

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0971224BA

Audi A8 D4 Alternator Starter Motor Wiring Harness Cable Loom 4H0971224BA

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06L903018G

Audi A4 B9 Alternator Generator 14V 230A Valeo 2.0 Petrol DMSB 06L903018G

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0959793M

Audi A8 D4 Front Door Control Unit Module Driver Side ECU 4H0959793M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959793S

Audi A4 B8 Front Door Control Module Unit ECU 8K0959793S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0959655H

Audi A7 4G8 Air Module Control Unit ECU SRS Module Unit 4H0959655H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907182H

Audi A8 D4 4H Front Seat Backrest Control Module Unit ECU 4H0907182H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0971981A

Audi A6 C6 Fuse Box Holder Cover Cap Lid 2.0 TFSI 4F0971981A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971035AR-1

Audi A5 S5 RS5 8T Door Card Wiring Loom Harness Wire Driver's Side 8T0971035AR

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L903018A

Audi A4 B9 A5 F5 Q5 FY A6 C8 A7 C8 Alternator Generator Valeo 04L903018A

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0057185KX

Audi A4 B7 Radio Media Player Audio CD Head Unit Player Concert 8E0057185KX

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0919604-1

Audi A6 C6 MMI Multimedia Navigation Display Screen Unit 4L0919604

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0906259K-2

Audi A5 F5 Engine ECU Kit 2.0 TFSI DDWA 252HP Quattro Automatic 8W0906259K

€450.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0971036J

Audi A1 8X Door Card Wiring Harness Cable Loom Front Passenger Side 8X0971036J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AF971648

Audi Q5 8R Panoramic Glass Ruuf Sunroof Wire Harness Loom Cable 3AF971648

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02T911023M

Audi A3 8P 1.6 MPI Petrol Starter Motor Engine 02T911023M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971035AR

Audi A5 S5 RS5 8T Door Card Wiring Loom Harness Wire Driver's Side 8T0971035AR

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907651A

Audi RSQ3 F3 VW Tiguan AD Touran 5T Rear Impact Crash Sensor Left N/S 5Q0907651A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 057911023EX-1

Audi Q7 4L Engine Starter Motor Actuator Starter 057911023EX

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971036H

Audi A4 B9 Front Door Wiring Harness Cable Loom Passenger Side 8W0971036H

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W5945075A-1

Audi A4 B9 Tail Light Rear Lamp Tailgate Connector Wire Plug Left N/S 8W5945075A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F1971095C

Audi A6 C6 Front Bumper PDC Parking Aid Wiring Harness Cable 4F1971095C

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0857273M

Audi A3 S3 RS3 8V Navigation Multimedia Screen Display 8V0857273M

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G2972871D

Audi A6 C8 Power Steering Rack Sensor Control Unit Cable Wiring 4G2972871D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425N-1

Skoda Octavia Mk4 2.0TFSI DNPA 245HP Engine Control ECU Kit 06K907425N Automatic

€398.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L907309K-1

Audi Q3 8U 2.0 TDI Quattro Engine ECU Kit 04L907309K Ignition + Key

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0919275S-CGR-1

Audi TT 8J PDC Parking Distance Sensor Control Condor Grey - Y7E 3C0919275S

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420959655

Audi R8 42 Air Module Sensor Control Unit ECU 420959655

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0907468E

Audi A7 4G8 Gateway Control Module Unit Diagnosis Interface Data Unit 4G0907468E

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0909131

Audi A8L 4H Ignition Keyless Entry Reader Coil Module 4H0909131

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425AA-1

Audi S3 8Y 2.0 TFSI DNFF 333HP Engine Control Unit ECU 06K907425AA Automatic

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W5945076A-1

Audi A4 B9 Rear Tail Light Lamp Connector Plug Wire Outer Right O/S 8W5945076A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W6971036G

Audi A4 B9 A5 F5 Front Door Wiring Harness Cable Passenger Side 8W6971036D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06E971821-1

Audi A8 D3 Ignition Wiring Harness Guide Trim 3.2 FSI 06E971821

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420941824

Audi R8 42 Spyder Fuse Box Battery Terminal Cover Housing Clamp 420941824

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K2907115AE-2

Audi A4 B8 Engine Control 211HP ECU 2.0 Petrol TFSI CDNC Manual 8K2907115AE Kit

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8N0906018CR

Audi TT 8N ECU Engine Control Unit Module 1.8 Petrol 180HP Manual 8N0906018CR

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8Y5971035L

Audi A3 8L Front Door Trim Panel Wiring Harness Loom Cable Left N/S 8Y5971035L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018AC-1

Audi A4 B8 A5 8T 2.0 TDI CJCA 143HP Engine Control ECU Kit 03L906018AC Manual

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W6971035AN

Audi A5 F5 Front Door Wiring Harness Cable Driver's Side 8W6971035R

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907530C

Audi A3 8V Central Gateway Control Unit Relay Module ECU 5Q0907530C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C906016FR

Audi A1 8X 1.4 TFSI CAXA 122HP Engine Control Unit ECU 03C906016FR Manual

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0919604A

Audi A8 S8 D3 Display Monitor Screen Sat Nav Multimedia Control Unit 4E0919604A

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0907383H

Audi A8 D3 Towbar Trailer Hitch Control Module Trailer Detection ECU 4E0907383H

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q1937084C

Audi Q2 GA Module BCM Body Control Unit Module ECU 5Q1937084C

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0035464A

Audi Q5 8R Amplifier AMP Booster Mount Bracket 8R0035464A

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0941031D-2

Audi A4 B8 Headlight Headlamp Wiring Harness Cable Plug Left N/S 8K0941031D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M0959792H

Audi A5 F5 Door Module Control Unit ECU Front Passenger Side 4M0959792H

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971228BH-1

Audi A4 B9 A5 F5 Starter Motor Battery Cable Wiring Harness 8W0971228BH

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P4971687R

Audi A3 8P Door Harness Loom Cable Wiring Rear Right O/S 8E0971687L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971030L

Audi A5 8T Door Wire Harness Loow Wiring Passenger Side 8T0971030L

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420035223C

Audi R8 42 Spyder Audio Amplifier System Unit Control Unit Module 420035223C

€417.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0971178

Audi A7 4G8 Phone Holder Docking Panel Unit Tray Base Cradle Plate 4G0971178

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02E911023S

Audi TT 8J 2.0 TFSI CESA Petrol Engine Starter Motor 02E911023S

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 18T0035223AH

Audi A4 B8 A5 8T Amplifier Audio Sound Booster Module Unit ECU 8T0035223AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971029AG

Audi A5 8T Coupe Front Door Wiring Loom Harness Driver's Side 8T0971029AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8F0971030BD

Audi A5 8F Front Door Electric Wiring Loom Harness Passenger's Side 8F0971030BD

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W8035225

Audi A5 F5 Radio Aerial Antenna Amplifier Right Upper O/S 8W8035225

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0012615

Audi A6 C7 Tyre Air Pump Compressor Inflator Emergency 4G0012615

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0919603B

Audi S1 8X Stereo Display Media SAT NAV Screen MMI Multifunction 8X0919603B

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0937517

Audi A6 C7 Fuse Battery Junction Box Fuse Distribution Terminal Centre 4G0937517

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06N971627B-1

Audi A3 8Y Engine Injector Module Wiring Harness Cable 2.0 TFSI 06N971627B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0907159C

Audi A1 8X Impact Sound Actuator Control Module 8X0907159C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0907637K

Audi A7 4G8 ESP Yaw Rate Module Control Unit Sensor ECU 4G0907637K

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8F0971029AP

Audi A5 8F Door Wire Harness Cable Loom Wiring Front Driver's Side 8F0971029AP

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0959673

Audi A1 8X Windscreen Heating Control Switch 8X0959673

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971693

Audi A4 B9 Door Trim Wiring Harness Loom Wire Rear Left Right N/O/S 8W0971693

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420035225R

Audi R8 42 Spyder Gen 1 Audio Antenna Amplifier Module Unit 420035225R

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0035670KX

Audi A8 D4 MMI 3G+ DVD Information Reader Electronics Control Unit 4H0035670K

€336.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0945096-1

Audi A5 8T Rear Tail Light Lamp Wiring Cable Plug Right O/S Outer 8T0945096

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3WA959595A

Audi A3 RS3 8V Door Control Unit ECU Module Front Driver's Side 3WA959595A

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8F0971035D

Audi A5 S5 8F Door Trim Panel Wiring Harness Loom Driver's Side 8F0971035D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03F906070GN-2

Audi A1 8X 1.2 TFSI CBZA 86HP Engine Control ECU Kit 03F906070GN Manual

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0862335M

Audi A4 B7 RS3 8P R8 42 TT 8J Bluetooth Interface Module Unit MMI 8P0862335M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0915336A

Audi A3 8P Battery Box Tray Covering Housing Trim Holder Bracket 3C0915336A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W1907064AA

Audi A4 B9 A5 F5 Comfort Body Control Module Unit ECU 8W1907064AA

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018JG-4

Audi A5 8F 2.0 TDI CGLC 177HP Diesel Engine ECU Kit Key Lock 03L906018JG Manual

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8XA035193

Audi A1 8X Navigation Head Unit Radio Audio MMI CD Player Stereo 8XA035193

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0035399-1

Bose Door Tweeter Audi A6 RS6 C7 A7 RS7 Speaker Rear Left Right N/O/S 4G0035399

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0035710

Audi A6 C8 Front A Pillar Column Dashboard Speaker Right O/S 4K0035710

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0907368

Audi A4 B9 A5 S5 F5 Rear Comfort Control Unit Bracket Holder Left N/S 8W0907368

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8945096-2

Audi A7 4G8 Rear Light Lamp Taillight LED Right O/S Harness Loom WIre 4G8945096H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA980653E

Audi A3 S3 8Y Front Camera FAS Lane Assistance Control Unit 5WA980653E

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420919275-1

Rear Bumper PDC Audi A5 Sensor Parking Distance Control 420919275 1706091849

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0915336B

Audi A3 8P Volkswagen Golf Mk5 Battery Side Cover Surround Housing 1K0915336B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0937517-2

Audi A3 RS3 RS4 B7 8V Potential Power Distribution Junction Jump Point 1K0937517

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8945093-2

Audi A7 4G8 Rear Boot Taillight Light Lamp Left N/S Harness Loom Wire 4G8945093

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0953549E

Audi A3 8P Steering Wheel Position Angle Sensor Control Unit Module 8P0953549E

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 05L907309B-2

Audi Q3 F3 40 TDI DTUA Quattro 200HP Engine Control ECU Kit 05L907309B Automatic

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0919605A

Audi A6 C8 A7 S7 RS7 Display Screen Multimedia Navigation 4K0919605A

€294.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0907115BC-1

Audi TT 8J Engine Control Unit Module ECU 1.8 TFSI CDAA 160HP 8J0907115BC Manual

€279.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H1971035CT

Audi A4 S4 RS4 8H Cabriolet Door Wiring Loom Harness Passenger Side 8H1971035CT

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959794A

Audi A4 B8 Door Module Rear Right O/S Control Unit Module ECU 8K0959794A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0907159D

Audi RS4 B9 A5 F5 Impact Sound Module Control Unit 8W0907159D

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

...

Showing 892-990 of 3391 products