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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Audi A1 8X Door Module Front Right O/S Driver's Side Control Unit ECU 8X0959793K

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4B0951173

Audi A3 8L A4 B5 A6 C5 Alarm Control Module Unit ECU 4B0951173

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T8971688L

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Right O/S 8T8971688L

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8V0907451

Audi A3 8V Sun Light Solar Sensor Control Detector 8V0907451

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4G8971035AS

Audi A7 4G Front Door Harness Wiring Loom Cable Driver's Side 4G8971035AS

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4G8971085CH

Audi A7 4G Rear Bumper Wiring Harness Cable Sensor PDC Radar 4G8971085CH

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T0035223AP

Audi A4 S4 B8 Audio Amplifier Sound Booster Control Unit Module 8T0035223AP

PLN 474.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4M0907566B

Audi A4 B9 A5 S5 F5 Lane Change Assist Module Control Rear Right O/S 4M0907566B

PLN 892.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8D0951253

Audi Q7 4L Relay Unit Module 4 Pins 8D0951253

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8J0951177

Audi TT 8J Interior Roof Alarm Motion Ultrasonic Sensor 8J0951177

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4H0907705K

Audi A8L 4H Steering Angle Steering Wheel Column Control Module ECU 4H0907705K

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4G0035502

Audi A7 4G8 Telephone Coupling Reception Antenna Amplifier 4G0035502

PLN 180.95

Free delivery: Jul 16

If paid before 14:00

Part no. 04L911021

Audi A5 8T 2.0 TDI CNHA Diesel Engine Motor Starter 04L911021

PLN 123.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8P4971035J

Audi A3 8P Door Wiring Harness Loom Cable Front Right O/S 8P4971035J

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W0937124A

Audi A4 B9 A5 F5 Q5 FY Fuse Box Control Module Relay Box 8W0937124A

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4H0959591A

Audi A8 D4 4H Sunroof Wind Deflector Module Control Unit 4H0959591A

PLN 123.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4G9035225C

Audi A6 C7 Avant Antenna Amplifier Upper Left N/S 4G9035225C

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4F1971693G

Audi A6 C6 Rear Door Wiring Harness Cable Loom Left Right N/O/S 4F1971693G

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 5Q0907357

Audi A3 8V Headlight Head Light Lamp Range Control Unit Module ECU 5Q0907357

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8W6971036G

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

PLN 180.95

Free delivery: Jul 16

If paid before 14:00

Part no. 06E971627H

Audi A5 8T Injector Wiring Harness Cable Cylinders 1-3 3.2 FSI 07L971627F

PLN 51.95

Delivery: Jul 16

If paid before 14:00

Part no. 8X0919603B

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

PLN 474.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K2907115L-2

Audi A4 B8 A5 8T 8K 2.0 TFSI CDNC 211HP Engine Control ECU Kit 8K2907115L Manual

PLN 949.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W0971104A

Audi A4 B9 Rear Bumper Cable PDC Parking Sensor Wiring Harness Loom 8W0971104A

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4H0971366M

Audi A8 D4 Seat Frame Wiring Harness Front Left N/S 4H0971366M

PLN 180.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4E0035225BQ

Audi A8 D3 Aerial Amplifier Antenna Receiver Signal Booster Unit 4E0035225BQ

PLN 142.95

Free delivery: Jul 16

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

PLN 569.95

Free delivery: Jul 16

If paid before 14:00

Part no. 81A971687J

Audi Q2 GA Rear Door Wiring Loom Harness Left Right N/O/S 81A971687J

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8P0035503M

Audi A3 8P Bluetooth Antenna Module Control Unit 8P0035503M

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4G0907697J

Audi A7 4G A6 C7 Daytime Running Lights DRL LED Headlight Module Unit 4G0907697J

PLN 256.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W0907217C

Audi A4 S4 B9 Front Windscreen Windshield Lane Assist Camera 8W0907217C

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T0035462-1

Audi A5 8T MMI Multimedia Interface Unit Module Control ECU 8T0035462

PLN 89.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5Q0971230KC

Audi Q2 GA Alternator Wiring Loom Harness Cable 5Q0971230KC

PLN 180.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W0035192K

Audi A4 B9 Multimedia Stereo Sat Nav SD CD Player Radio Head Unit 8W0035192K

PLN 949.95

Free delivery: Jul 16

If paid before 14:00

Part no. 1J0973332A

Audi RS4 B8 Cable Loom Wiring Plug Socket 2 Pins 1J0973332A

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8R0945222

Audi Q5 8R Rear LED Light Third Brake Wiring Harness Light Right O/S 8R0945222

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 4F0035061B

Audi A4 B8 A5 8F Music Navi CD Radio Player Head Unit 4F0035061B

PLN 759.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4G5035223B

Audi A7 4G Bose Sound System Amplifier Control Unit Modul 4G5035223B

PLN 1,947.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4M0971227S

Audi Q7 4M 3.0 TDI Battery Earth Cable Lead Negative Wiring 4M0971227S

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 1K0907361B

Audi A3 Q3 8U Relay Plate Fuse Box Bracket Holder Housing Retainer 1K0907361B

PLN 61.95

Free delivery: Jul 16 – 17

If paid before 14:00

Part no. 4K9035225B

Audi A6 C8 Antenna Aerial Amplifier AMP 4K9035225B

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4F1941824A

Audi A5 F5 Fuse Box Control Module Connector Plug Socket Wiring Loom 4F1941824A

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0941824D

Audi Volkswagen Fuse Box Connector Socket Module Unit 8K0941824D

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4L0035225AJ

Audi Q7 4L Radio Aerial Antenna Amplifier AM/FM 4L0035225AJ

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4F1971035J

Audi A6 C6 Front Door Wiring Harness Loom Cable Driver Side 4F1971035J

PLN 56.95

Delivery: Jul 16

If paid before 14:00

Part no. 1S0919275D-SEB

Audi Q3 8U PDC Parking Distance Control Sensor Sepang Blue Pearl Y5Q 1S0919275D

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4F0907274

Audi A6 S6 4F Q7 4l Tyre Pressure Control Module Unit ECU 3.0 TDI CJGA 4F0907274

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 4H0971663A

Audi A8 D4 Front Door Wiring Harness Loom Cable Left N/S 4H0971663A

PLN 123.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4H0971687BK

Audi A8 D4 Door Wiring Loom Harness Cables Rear Right O/S 4H0971687BK

PLN 123.95

Free delivery: Jul 16

If paid before 14:00

Part no. 03L906022FL

Audi A6 C6 3.0 TDI 233HP Diesel Engine Control Unit ECU Kit Module 03L906022FL

PLN 474.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4F0959793P

Audi A6 C6 Door Module Front Driver's Side Control Unit ECU 4F0959793P

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4H0907468AE

Audi A8 D4 Gateway Control Module Diagnostic Interface BUS 4H0907468AE

PLN 1,020.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4G8971036K

Audi A7 4G8 Front Door Harness Wiring Loom Cable Passenger Side 4G8971036K

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W0971029BD

Audi A4 B9 Front Door Wiring Loom Cable Right O/S 8W0971029BD

PLN 51.95

Delivery: Jul 16

If paid before 14:00

Part no. 83A907159

Audi Q3 RSQ3 F3 Body Sound Impact Control Module ECU 83A907159

PLN 379.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T0959795C

Audi A5 8T Rear Door Control Module Unit Left Right N/O/S 8T0959795C

PLN 104.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T2035110A

Audi A5 8T Radio Head Unit Navi CD DVD Player Changer 8T2035110A

PLN 70.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8R0971035AM

Audi Q5 8R Door Wiring Loom Harness Electrical Cable Driver's Side 8R0971035AM

PLN 113.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8E0959643B

Audi A4 B7 Crash Impact Airbag Sensor Unit Module 8E0959643B

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 8V0863051

Audi A3 8V AMP Amplifier Under Seat Cover Trim Panel Unit 8V0863051

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8T0035223L

Audi A4 B8 A5 8T Audio Amplifier Sound Booster Control Unit Module 8T0035223L

PLN 807.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4M1959593D

Audi A6 C8 Door Control Module Unit ECU Front Driver's Side 4M1959593D

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W5945094AA-1

Audi A4 B9 S4 8W Rear Tail Light LED Right O/S Wire Cable Harness 8W5945094AA

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 03L906018MQ

Audi Q5 8R CGLB 2.0 TDI 170HP Quattro Engine Control ECU 03L906018MQ Automatic

PLN 617.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0971030E

Audi A4 B8 Front Door Wiring Harness Loom Cabling Passenger Side 8K0971030E

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8X0907159B

Audi A1 8X Fuel Pump Module Control Unit ECU 8X0907159B

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W8959107E

Audi A5 F5 Rear Hatch Tailgate Boot Lid Control Module Unit ECU 8W8959107E

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 057911022

Audi Q7 4M Engine Starter Motor Actuator Starter Valeo 3.0 TDI Diesel 057911022

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4K0971727

Audi A6 C8 Pressure Sensor Wiring Loom Harness Cable 4K0971727

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8T0971030AG

Audi S5 8T RS5 Door Wire Wiring Cable Loom Harness Front Passenger 8T0971030AG

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 3Q0941329

Volkswagen Skoda Seat Audi Diesel Engine Adblue Module Control Unit 3Q0941329

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8P0907357M

Audi A6 C6 Headlight Lamp Range Control Module Unit ECU 8P0907357M

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4K5971693BA

Audi A6 C8 Door Wiring Harness Cable Loom Rear Left Right N/O/S 4K5971693BA

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8V0035465C

Audi A3 8V Bang & Olufsen Audio Sound Amplifier Stereo System Module 8V0035465C

PLN 702.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W0971659B

Audi A4 B9 Dashboard Air Vent Wiring Loom Harnes Cable Passenger Side 8W0971659B

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8X0907357C

Audi TT 8J Headlight Head Light Lamp Range Control Unit Module ECU 8X0907357C

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4K0035709

Audi A6 C8 Front A Pillar Column Dashboard Speaker Left N/S 4K0035709

PLN 170.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0907063N

Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907063N

PLN 218.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4F0907279D

Audi Q7 4L Comfort Control Module Unit ECU 4F0907279D

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4F0907289E

Audi A6 C6 Comfort Convenience System Control Module Unit ECU 4F0907289E

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0971104J

Audi A5 8T Rear Bumper PDC Sensor Parking Distance Control Wiring 8K0971104J

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 4L0971036K

Audi Q7 4L Door Wiring Loom Harness Wire Cable Front Right O/S 4L0971036K

PLN 99.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8P0035785

Audi A3 8P MMI Multimedia Interface Unit Module Control ECU 8P0035785

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4L2910401B

Audi Q7 4L Engine ECU Control Unit 239 HP 3.0 TDI CASA 4L2910401B Automatic

PLN 1,709.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0971100B

Audi A4 B8 Roof Interior Light Wiring Harness Cable Loom 8K0971100B

PLN 56.95

Delivery: Jul 16

If paid before 14:00

Part no. 8W0959595E

Audi A4 B9 Rear Door Control Module ECU Left Right N/O/S 8W0959595E

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0907440

Audi Q7 4L GPS Tracking Location Control Unit Module Locator 8K0907440

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8E0910115K-1

Audi A4 B7 Engine Control ECU 2.0 TFSI BWE 200HP Manual 8E0910115K

PLN 569.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8J0971035J

Audi TT 8J Driver's Side Door Card Wiring Loom Harness Cable 8J0971035H

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4G8959107S

Audi A7 4G8 Sportback Electric Tailgate Bootlid Control Unit Module 4G8959107S

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 04L906021CK

Audi Q5 8R 2.0 TDI CNHA Quattro 190HP Engine Unit ECU Kit 04L906021CK Automatic

PLN 1,899.95

Free delivery: Jul 16

If paid before 14:00

Part no. 057906051H-3

Audi RSQ3 F3 DPF Differential Pressure Sensor 2.5 TFSI 057906051H 83A131552G

PLN 455.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W6971104M

Audi A5 F5 Rear Bumper Parking Sensor Wiring Loom Cable Harness 8W6971104M

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8F0971029AP

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

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4E0907280B

Audi A8 4E S8 D3 Power Supply Control Module Unit ECU 4E0907280B

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8Y0035465

Audi A3 8Y A4 B9 Q5 FY Harman Speaker Amplifier Booster Sound System 8Y0035465

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 05L907309S

Audi Q5 FY Mk2 40 TDI DTPA 204HP Engine Control Module ECU 05L907309S Automatic

PLN 1,139.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8U0945093H-1

Audi Q3 8U Rear Tail Light Lamp Wiring Cable Inner Left N/S LED 8U0945093H

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8W8971035R

Audi A5 F5 Door Trim Panel Harness Wiring Wire Front Driver's Side 8W8971035R

PLN 341.95

Free delivery: Jul 16

If paid before 14:00

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