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 Q7 4M Rear Door Control Module Unit ECU Left Right N/O/S 4M0959595N

PLN 113.95

Free delivery: Jul 15

If paid before 14:00

Part no. 3Q0937125C

Audi RS3 F3 RSQ3 F3 Fuse Box Housing Module Left N/S 2.5 TFSI 3Q0937125C

PLN 427.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0035454

Audi A4 B9 Front Centre Dashboard Tweeter Speaker 8W0035454

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8R0907468AE

Audi A5 8T 2.0 TDI Gateway Control Module Unit ECU 8R0907468AE

PLN 237.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0906093F

A4 B9 35 TFSI Fuel Pump Sender Control Relay Module Unit ECU 8W0906093F

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8T0907468AH

Audi A4 Allroad Avant A5 S5 Q5 RS5 Diagnosis Inteface Gateway Module 8T0907468AH

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 079903805AF

Audi A5 S5 S5 8T 4.2 FSI Alternator Bracket Mount Holder 079903805AF

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8T8971687S

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Left N/S 8T8971687S

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0915459J

Audi A5 F5 S5 RS5 A4 B9 Battery Central Protection Cover Mount 8W0915459J

PLN 284.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8X0959792H

Audi Q3 8U Door Module Front Door Left N/S Control Module 8X0959792H

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8T0907468K

Gateway Interface Audi A5 8T A4 B8 Control Unit Module ECU 8T0907468K

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8K0907551-2

Audi S4 B8 3.0 TFSI 333HP CAKA Quattro Engine Unit ECU Kit 8K0907551 Automatic

PLN 1,329.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4H0907468AF

Audi A8 D4 Central Diagnostic Getaway PKO Control Unit Module ECU 4H0907468AF

PLN 474.95

Free delivery: Jul 15

If paid before 14:00

Part no. 420035225S

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

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 82C971030G

Audi A1 GB Sportback Front Door Wiring Loom Harness Passenger Side 82C971030G

PLN 123.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8V0907376C

Audi A3 S3 8V Air Suspension Damping Module Control Unit 8V0907376C

PLN 322.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4F0971085E

Audi A6 C6 Rear Bumper Parking Sensor Wiring Loom Harness 4F0971085E

PLN 118.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8K0907801L

Audi S5 8T Parking Electric Brake Handbrake Module Control Unit 8K0907801L

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 03L906023KQ

Audi A1 8X 1.6 TDI 105HP CAYC Engine Control ECU Kit BCM Key 03L906023KQ Manual

PLN 569.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5Q0971250N

Audi A3 8V Volkswagen VW Golf Mk7 Negative Cable Ground Wire Harness 5Q0971250N

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8R0971030B

Audi Q5 8R Front Door Wiring Loom Harness Cable Passenger Side 8R0971030B

PLN 47.95

Delivery: Jul 15

If paid before 14:00

Part no. 8W0906259N-1

Audi A5 F5 45 TFSI DKNA 245HP Quattro Engine ECU Kit 8W0906259N Gateway + Key

PLN 1,424.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8K0971030B

Audi A4 B8 Door Wiring Loom Cable Front Passenger Side 8K0971030B

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W5945076A-1

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

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8K0919475E

Audi A4 B8 PDC Parking Assist Sensor Control Module ECU 2.0 TDI 8K0919475E

PLN 379.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4L0910441B-1

Audi Q7 4L Rear Reversing Camera View Module Control Unit ECU 4L0910441B

PLN 427.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4G8971030CS

Audi A7 4G Front Door Wiring Loom Harness Passenger Side 4G8971030CS

PLN 237.95

Free delivery: Jul 15

If paid before 14:00

Part no. 03L906018JR

Audi A4 B8 2.0 TDI CJCB 136HP Engine Control Unit Module ECU 03L906018JR Manual

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8K0971030AD

Audi A4 B8 Door Wiring Harness Cable Loom Front Passenger Side 8K0971030AD

PLN 70.95

Free delivery: Jul 15

If paid before 14:00

Part no. 06E971627T

Audi A6 C7 2.8 FSI CHVA Petrol Engine Wiring Loom Harness Cable 06E971627T

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0907285

Audi A4 B9 A5 F5 Q5 FY Fuse Box Relay Retainer Bracket Diesel 8W0907285

PLN 56.95

Delivery: Jul 15

If paid before 14:00

Part no. 7P0927601A

Audi Q7 4L Volkswagen Touareg 7P Oil Pump Control Module Unit ECU 7P0927601A

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 079903021T

Audi RS4 B8 RS5 8T Alternator Generator 4.2 FSI V8 Petrol Engine 079903021T

PLN 441.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8H1971029AL

Audi A4 B7 Convertible Front Driver Side Door Wiring Harness Cable 8H1971029AL

PLN 332.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5WA937615

Audi A3 S3 8Y Fuse Box Control Module Relay Box Electrical Unit 5WA937615

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5Q0971250Q

Audi A3 S3 8V Negative Battery Terminal Earth Cable Lead Wiring 5Q0971250Q

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 4H0919604H-2

Audi A8 4H Head Up Display Hud Project Screen Control Unit Module 4H0919604G

PLN 455.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4G0907551E-1

Audi A6 C7 3.0 TFSI Quattro 310HP Engine Control ECU Kit 4G0907551E Automatic

PLN 1,424.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4M0971237S

Audi Q7 4M Q8 Mk1 Battery Negative Cable Wiring Earth Line 4M0971237S

PLN 161.95

Free delivery: Jul 15

If paid before 14:00

Part no. 3WA959595A

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

PLN 237.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0971687BR

Audi A4 B9 Rear Right O/S Door Wiring Loom Harness 8W0971687BR

PLN 151.95

Free delivery: Jul 15

If paid before 14:00

Part no. 079971627R

Audi RS4 B8 RS5 8T Injector Wiring Loom Harness 4.2 V8 FSI Petrol 079971627R

PLN 156.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4G8959795A

Audi A7 4G8 Door Control Module Electrical Unit ECU Rear Right O/S 4G8959795A

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8XA035193

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

PLN 1,899.95

Free delivery: Jul 15

If paid before 14:00

Part no. 3Q0959435G

VW Volkswagen Tiguan 5N Entry Keyless Kessy Control Module Unit ECU 3Q0959435G

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 4H0971142C

Audi A8 D4 Door Card Wiring Loom Cable Harness Rear Right O/S 4H0971142C

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4F0971073

Audi A6 C6 Front Slam Panel Wiring Loom Harness Cable 4F0971073

PLN 56.95

Delivery: Jul 15

If paid before 14:00

Part no. 8K0959795G

Audi Q5 8R Rear Door Control Module Unit ECU Left Right N/O/S 8K0959795G

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8H0951178

Audi A4 B7 Cabrio Alarm Signal Body Control Sensor Module Unit 8H0951178

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 4G0035061N-1

Audi A4 B8 A5 8T Q5 8R A8 D4 Stereo DAB CD Player Radio Head Unit 4G0035061N

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. 81A971035AP

Audi Q2 GA Front Door Wiring Harness Loom Cable Driver Side 81A971035AP

PLN 66.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8X0959792F

Audi A1 8X Front Door Control Module Unit Passenger Side 8X0959792F

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 5WA959436B

Audi A3 8Y Volkswagen Golf Mk8 Keyless Entry Module Control Unit ECU 5WA959436B

PLN 51.95

Delivery: Jul 15

If paid before 14:00

Part no. 8U0955559

Audi A1 8X A3 8V Windscreen Rain Sensor Control Unit 8U0955559

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0907064GB

Audi A4 B9 A5 F5 Central Body Control Module BCM Unit ECU 8W0907064GB

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8K0971036B

Audi RS4 B8 Door Wiring Harness Cable Loom Front Right O/S 8K0971036B

PLN 123.95

Free delivery: Jul 15

If paid before 14:00

Part no. 83A971392

Audi Q3 RSQ3 F3 Seat Belt Warning Wiring Harness Centre Left N/S 83A971392

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4E0035652E

Audi A6 C6 MMI Multimedia Sat Nav Navigation Control Head Unit 4E0035652E

PLN 474.95

Free delivery: Jul 15

If paid before 14:00

Part no. 06H911021A

Audi A5 8T 2.0 TFSI Petrol Engine Starter Motor Actuator 06H911021A

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4G8971693

Audi A7 4G Door Harness Loom Cable Wiring Rear Left Right N/O/S 4G8971693

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4F0051510K

Audi Cable Adapter iPod Connection 4F0051510K

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8Y0035465A

Audi Q2 GA Harman Speaker Amplifier Booster Sound System 8Y0035465A

PLN 617.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4H0035061J

Audi A8L 4H Head Unit Radio CD Player Navigation GPS 4H0035061J

PLN 1,329.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4G5035225

Audi A6 C7 Aerial Roof Booster Antenna Amplifier AMP 4G5035225

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 4H0035456

Audi A7 4G Aerial Antenna Amplifier Control Unit Module 4H0035456

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 420971036

Audi R8 42 Front Door Wiring Harness Cable Loom Right O/S 420971036

PLN 313.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8P0906131A

Audi A3 8P Engine Unit Bracket ECU Module Holder Bracket Mount 8P0906131A

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8P0971148

Audi A3 8P Tailgate Heated Rear Window Wiring Harness Loom 8P0971148

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 4M0010006J

Audi Q7 4M Fuse Box Battery Terminal Cover Housing 4M0010006J

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 7P0915181B

Audi A1 8X Negative Battery Terminal Cable Wiring 7P0915181B

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 4F0035503E

Audi A4 B8 Transmitting Receiving Unit Road Toll System 4F0035503E

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8V4971030AD

Audi A3 S3 8V Front Door Wiring Harness Loom Cable Passenger Side 8V4971030AD

PLN 237.95

Free delivery: Jul 15

If paid before 14:00

Part no. EXHAUST-FLAP-CONTROL

Audi A3 8V 1.6 TDI CLHA Drive Exhaust Flap Control Module Unit Actuator

PLN 123.95

Free delivery: Jul 15

If paid before 14:00

Part no. 0CJ927749A

Audi A6 C8 Transfer Box Control Unit Four-Wheel Drive Module ECU 0CJ927749A

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. 03L903023

Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4F5945095L-2

Audi A6 C6 Saloon Rear Tailgate Trunk Lid Light Lamp Wiring Left N/S 4F5945095L

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 5Q0959392B

Audi A3 S3 8V Door Control Module Front Passenger Side Left N/S 5Q0959392B

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 03L906018LB

Audi A6 C7 2.0 TDI CGLC 177HP Engine Control Unit ECU 03L906018LA Automatic

PLN 284.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4H0906093C

Audi Q7 4L A8 D4 Fuel Pump Control Unit Module ECU Diesel 4H0906093C

PLN 56.95

Delivery: Jul 15

If paid before 14:00

Part no. 8W6971030BF

Audi A5 F5 Front Door Wiring Harness Cable Passenger Side 8W6971030BF

PLN 284.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4H0971727B

Audi A8 4H D4 Quattro Fuel Tank Pump Wiring Loom Harness 4H0971727B

PLN 66.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4F0959792P

Audi A6 C6 Front Door Lock Control Module Unit ECU Passenger Side 4F0959792P

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4H0907064DB

Audi A8 D4 BCM Body Comfort Convenience Module Unit ECU 4H0907064DB

PLN 279.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8U0941774A-1

Audi Q3 8U LED Headlight Headlamp Plug Socket Wiring Cable Right O/S

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 8T0955559

Audi A5 8T Front Window Windshield Windscreen Rain Sensor Control Unit 8T0955559

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 8V3971035A

Audi A3 S3 8V 3D Door Wiring Harness Loom Cable Driver's Side 8V3971035A

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 07K971082F

Audi RS3 8V 8Y RSQ3 F3 Wiring Harness Injectors 2.5 TFSI Petrol 07K971082F

PLN 265.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4B0959643E

Audi A3 8P Crash Impact Airbag Sensor Unit Module Air Bag 4B0959643E

PLN 56.95

Delivery: Jul 15

If paid before 14:00

Part no. 8T0907115A

Audi A5 8T 1.8 TFSI CABD 170HP Engine Control Unit ECU 8T0907115A Manual Gearbox

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8P0907368B

Audi A3 8P Golf Mk6 Convenience Module ECU Bracket Mount Support 8P0907368B

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 4G5971030EF

Audi RS6 C7 Door Wiring Front Left N/S Door Harness Loom 4G5971030EF

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8F0971029AL

Audi A5 8F Front Door Electric Wiring Loom Harness Driver's Side 8F0971029AL

PLN 113.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0971104M

Audi A4 B9 A4 S4 8W Rear Bumper PDC Parking Sensor Wire Harness Loom 8W0971104M

PLN 270.95

Free delivery: Jul 15

If paid before 14:00

Part no. 1S0919275D-MOG

Audi Q3 8U PDC Parking Distance Control Sensor Monsoon Grey Metallic - X7R

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4L2910401B-2

Audi Q7 4L 3.0 TDI CRCA Quattro Engine ECU Kit CCM + Ignition + Key 4L2910401B

PLN 3,514.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8V4971030K

Audi A3 S3 8V Front Passenger Door Wiring Harness Loom Cable 8V4971030K

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4K0971358

Audi A6 C8 Hybrid High Voltage Battery Earth Line Negative Cable 4K0971358

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. FK72-18808-AC

Land Rover Discovery L550 Boot Trunk Subwoofer Rear Bass Speaker FK72-18808-AC

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4G8959792G

Audi A6 C7 Front Left N/S Door Lock Control Module Unit ECU 4F0959792T

PLN 42.95

Delivery: Jul 15

If paid before 14:00

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