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 RSQ3 8U Door Wiring Harness Loom Rear Left Right N/O/S 8U0971693D

€23.95

Part no. 4K0035063A

Audi A6 C8 Central Media Unit Head Unit Navigation Control MIB2+ HIGH 4K0035063A

€351.95

Part no. 8T0971365B

Audi A4 S4 B8 Front Seat Wire Harness Cable Loom 8T0971365B

€23.95

Part no. 8W0959595E

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

€23.95

Part no. 8W0035454A

Audi A4 B9 Front Centre Dashboard Tweeter Speaker 8W0035454A

€23.95

Part no. 8S0035020B

Audi TT 8S FV Audio Multimedia Radio CD Player MIB2 Head Unit 8S0035020B

€569.95

Part no. 8W1907064CM

Audi Q7 4M Body Control Module BCM Comfort Control Unit Power Supply 8W1907064CM

€189.95

Part no. 4M0035454B

Audi A4 B9 Dashboard Loudspeakers Tweeter Speaker Front 4M0035454B

€23.95

Part no. 4N0906093E

Audi Q3 F3 A8 4N 2.5 TFSI Petrol Control Fuel Pump Tank Pump Unit 4N0906093E

€47.95

Part no. 03G906016LR

Audi A4 B7 Engine Control Unit ECU 140 HP KIT 2.0 Diesel Automatic 03G906016LR

€75.95

Part no. 4G8971035BG

Audi A7 4G Front Door Harness Wiring Loom Cable Driver Side 4G8971035BG

€28.95

Part no. 06M907309H-1

Audi RS5 F5 2.9 TFSI DECA Quattro 450HP Engine Unit ECU Kit 06M907309H Automatic

€788.95

Part no. 8U0614109B

Audi RS Q3 8U ABS Pump Modulator Control Unit 2.5 TFSI Petrol 8U0614109B

€379.95

Part no. 4E0971845

Audi A8 D3 Rear Fuse Relay Box Plate Mounting Right O/S 4E0971845

€23.95

Part no. 06F906056BT

Audi A3 8P Engine Control Unit 150HP 2.0 FSI AXW Petrol Manual 06F906056BT

€137.95

Part no. 8X0971687D

Audi A1 8X Rear Door Harness Left Right N/O/S Wiring Loom Cable 8X0971687C

€23.95

Part no. 3Q0905861C

Audi A4 B9 A5 F5 Steering Column Lock Mechanism Control Unit 3Q0905861C

€23.95

Part no. 8W8947356

Audi A5 F5 Front Door Card Panel LED Module Light Unit Wiring Harness 8W8947356

€32.95

Part no. 8W6971104A

Audi A5 F5 Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 8W6971104A

€32.95

Part no. 4G8971036D

Audi A7 4G Front Door Harness Wiring Loom Cable Passenger Side 4G8971036D

€23.95

Part no. 4G8971365K

Audi A6 C7 Seat Belt Wiring Harness Warning System Left Right N/O/S 4G8971365K

€23.95

Part no. 4M1959593D

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

€32.95

Part no. 8K0971679B

Audi A4 B8 Glove Box Passenger Air Module Switch Wiring Harness Cable 8K0971679B

€23.95

Part no. 4F0959655B

Audi A6 C6 Air Module Control Unit ECU Module 4F0959655B

€23.95

Part no. 8T0035223L

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

€185.95

Part no. 4E0907440

Audi A8 D3 Vehicle Location Tracking Control Module Unit 4E0907440

€23.95

Part no. 5Q4959593N

Audi A1 GB VW Crafter SY Door Control Module Front Driver's Side 5Q4959593N

€28.95

Part no. 04C903023M

Audi A3 8V A1 S1 8X VW Jetta A6 Golf 5G Golf R 5G Petrol Alternator 04C903023M

€70.95

Part no. 8V3971035A

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

€23.95

Part no. 8X0959792K

Audi Q3 8U Front Door Module Control Unit ECU Passenger Side 8X0959792H

€23.95

Part no. 1J0915333A-1

Volkswagen Golf Mk4 Battery Holder Tray Base Console Bracket Support 1J0915333A

€23.95

Part no. 1J0971243B

Audi TT 8N Battery Negative - Earth Cable Wiring Harness Cable 1J0971243B

€23.95

Part no. 8K0971104J

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

€23.95

Part no. 0AM911021E

Audi A3 8V 8Y Q2 GA S1 8X VW T-Roc Starter Motor 1.6 TDI Diesel DGTE 0AM911021E

€37.95

Part no. 4F0051510R

Audi Q5 8R MMI Multimedia Interface Adapter Cable Loom 4F0051510R

€23.95

Part no. 83A947356

Audi Q3 F3 LED Front Door LED Lighting Module Control Unit Left N/S 83A947356

€23.95

Part no. 7E0907652A

Audi TT 8J ESP YAW Rate Lateral Acceleration Speed Sensor 7E0907655A

€23.95

Part no. 4G0035056D

Audi A4 B8 Sat Nav Multimedia DAB Radio Control Head Unit 4G0035056D

€218.95

Part no. 8W6947355D

Audi A5 S5 F5 Door Card Panel LED Module Light Unit Front Right O/S 8W6947355D

€23.95

Part no. 4K0971537

Audi A6 C8 A7 4K Electric Drive Earth Line Negative Cable 4K0971537

€47.95

Part no. 8W8971693B

Audi A5 S5 F5 Door Wiring Harness Rear Left Right N/O/S 8W8971693B 8W8971693C

€32.95

Part no. 4E0910110C

Audi A6 S6 C6 6-Disc CD Changer Magazine Head Unit MMI 4E0910110C

€32.95

Part no. 8W0971029CF

Audi A4 B9 Front Door Wiring Wire Loom Harness Driver's Side 8W0971029CF

€42.95

Part no. 4G0959754DD

Audi S7 4G Remote Key Radio Alarm Key Fob Opener Button 4G0959754DD

€32.95

Part no. 8R1035223A

Audi A4 B8 A5 8T Sound System Amplifier Control Module ECU 8R1035223A

€23.95

Part no. 059971627R

Audi S5 F5 A6 C8 Engine Wiring Harness Loom Harness 3.0 TDI DDVB 059971627R

€23.95

Part no. 8T0971029L

Audi A5 8T Front Door Wiring Harness Loom Wire Driver's Side 8T0971029L

€42.95

Part no. 8P0057186X

Audi A3 8P Stereo Radio CD Player Unit Module ECU 2.0 TDI Diesel 8P0057186X

€61.95

Part no. 03L911024

Audi A4 B8 A5 8T Diesel 2.0 TDI Starter Motor Manual 03L911024

€23.95

Part no. 5Q0971230BC

Audi A3 8V Battery Cable Starter Alternator Wiring Harness 5Q0971230BC

€23.95

Part no. 4G5971095AA

Audi A6 C7 Front Parking Sensor PDC Wiring Loom Cable Harness 4G5971095AA

€142.95

Part no. 4H0907553C

Audi A8 D4 Air Suspension Control Unit Module ECU Controller 4H0907553C

€80.95

Part no. 8J0907115N-3

Audi TT 8J Engine ECU Ignition + Key Kit 2.0 TFSI BWA 200HP Automatic 8J0907115N

€180.95

Part no. 4K5035225P

Audi A6 C8 Aerial AMP Antenna Amplifier Module Control Unit 4K5035225P

€28.95

Part no. 7L0915138C

Audi Q7 4L Battery Mounting Bracket Part Holder 7L0915138C

€23.95

Part no. 5Q0971230KC

Audi Q2 GA Alternator Wiring Loom Harness Cable 5Q0971230KC

€23.95

Part no. 82A945093C-2

Audi A1 GB Rear LED Tail Light Lamp Wiring Plug Cable Left N/S 82A945093C

€23.95

Part no. 8P0971148A

Audi A3 8P Tailgate Heated Rear Window Wiring Harness Loom 8P0971148A

€23.95

Part no. 8U0971029H

Audi Q3 8U Front Door Wiring Loom Harness Cable Driver's Side 8U0971029H

€47.95

Part no. 82A971104K

Audi A1 GB Rear Bumper PDC Parking Sensor Wiring Loom 82A971104K

€23.95

Part no. 4F0907179A

Audi A6 C6 RS6 Parking Distance Module Bracket Mount Carrier 4F0907179A

€23.95

Part no. 03L911024A

Audi A4 B8 A5 8T 2.0 TDI Diesel Engine Starter Motor Assembly Unit 03L911024A

€56.95

Part no. 8K0907440

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

€23.95

Part no. 8K2971111B

Audi A4 S4 8K A5 S5 8T Electric Power Steering Wiring Loom Harness 8K2971111B

€37.95

Part no. 8T8971030AP

Audi A5 8T Front Door Wiring Harness Loom Cable Passenger's Side 8T8971030AP

€23.95

Part no. 06K907309B

Audi TT FV 2.0 TFSI DKZB Engine Control Unit Module 06K907309B Automatic

€151.95

Part no. 4H0971035AD

Audi A8 D4 Front Door Wiring Loom Harness Cable Driver's Side 4H0971035AD

€28.95

Part no. EXHAUST-FLAP-CONTROL

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

€28.95

Part no. 8K0907247

Audi A6 4G Keyless Entry Amplifier Control Box Module Aerial Antenna 8K0907247

€23.95

Part no. 4H0035061GX

Audi A8 D4 Radio TV Tuner Digital Analog Receiver Unit Module 4H0035061G

€303.95

Part no. 03C903023A

Audi A1 8X A3 8P Alternator Generator 1.4 TFSI Petrol Engine CAVG 03C903023A

€23.95

Part no. 8W6947355C

Audi A5 S5 F5 Door Card Panel LED Module Light Unit Front Left N/S 8W6947355C

€23.95

Part no. 83A947356G

Audi Q3 F3 LED Front Door LED Lighting Module Control Unit Left N/S 83A947356G

€23.95

Part no. 8U0955559B-1

Audi A5 8T A8 D4 RS3 8V Q7 4M Windscreen Rain Sensor Control Unit 8U0955559B

€23.95

Part no. 4H0971693N

Audi A8 D4 Door Wiring Loom Harness Cable Rear Right O/S 4H0971693N

€37.95

Part no. 8K0971228AJ

Audi A6 C6 Alternator Main Cable Wiring Harness Loom 8K0971228AJ

€56.95

Part no. 8T0907468R

Audi A4 B8 Gateway Control Unit Module ECU 8T0907468R

€23.95

Part no. 8K0907063DJ

Audi RS4 B8 Body Control Unit Module ECU BCM 8K0907063DJ

€89.95

Part no. 4G0907397R

Audi S1 8X Front Lamp Headlight DRL Ballast Control Module Unit 4G0907397R

€23.95

Part no. 4B0919471A

Audi TT 8N Headlight Module Ballast Relay Control Unit 4B0919471A

€23.95

Part no. 8X0971035BS

Audi A1 8X Front Door Loom Wiring Harness Cable Right O/S 8X0971035AS

€23.95

Part no. 8W0971693M

Audi A4 B9 A5 F5 Door Wiring Loom Harness Cable Rear Left Right N/O/S 8W0971693M

€23.95

Part no. 4H0971036E

Audi A8 D4 Front Door Wiring Loom Harness Cable Right O/S Side 4H0971036E

€28.95

Part no. 8P4971035J

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

€23.95

Part no. 8X0919475N

Audi Q3 8U PDC Assistance Parking Distance Control Module Unit ECU 8X0919475N

€89.95

Part no. 8X0971036T

Audi A1 8X Front Door Card Wiring Harness Loom Cable Left N/S 8X0971036T

€23.95

Part no. 8S0820047

Audi TT FV 8S A/C Air Condition Climate Control Module Unit ECU 8S0820047

€23.95

Part no. 82A945094C-2

Audi A1 GB Rear LED Tail Light Lamp Wiring Plug Cable Right O/S 82A945094C

€23.95

Part no. 5N0035554J

Audi Q7 4L VW Passat A3 Touareg 7P Multimedia Interface Cable Media 5N0035554J

€23.95

Part no. 4F9035225D

Audi A6 C6 Antenna Amplifier Control Unit Module ECU 4F9035225D

€23.95

Part no. 8S0907159B

Audi TT FV Acoustic Controller Control Module Unit ECU 8S0907159B

€28.95

Part no. 7K08200A

Audi RSQ3 8U Wiring Loom Harness Cable Connector Adapter 7K08200A

€28.95

Part no. 4L0959655C

Audi Q7 4L Air Module Control Unit ECU Impact Sensor 4L0959655C

€23.95

Part no. 8W0937530

Audi Q7 4M Fuse Box Module Holder Relay Box 8W0937530

€23.95

Part no. 8W5035021

Audi A4 B9 Multimedia MMI Radio SD Player Stereo Sat Nav Head Unit 8W5035021

€659.95

Part no. 8W8971030AC

Audi A5 F5 Front Passenger's Door Wiring Harness Loom 8W8971030D

€51.95

Part no. 8W6945093D-2

Audi S5 F5 Inner Rear Tail Light Lamp Wiring Cable Left N/S 8W6945093D

€23.95

Part no. 8T0959795Q

Audi A5 B8 8T Door Module Control Unit Left Right N/O/S 8T0959795Q

€23.95

Part no. 83A947356A

Audi Q3 F3 LED Front Door LED Lighting Module Control Unit Right O/S 83A947356A

€23.95

...

Showing 397-495 of 3357 products