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 A6 C8 Mild Hybrid Power Distribution Mount Bracket Support 4K0907347B

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 059911021K

Audi A5 8T 3.0 TDI CLAB Diesel Engine Starter Motor 059911021K

PLN 161.95

Free delivery: Jul 16

If paid before 14:00

Part no. 83A971085S

Audi Q3 F3 Front Bumper Wiring Harness Loom 83A971085S

PLN 284.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K5035225C

Audi A4 B8 Antenna Amplifier Diversity 8K5035225C

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8K1907115A-1

Audi A4 B8 1.8 TFSI CABB 160HP Engine Control Module Unit ECU 8K1907115A Manual

PLN 332.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8P4971035AB

Audi S3 8P Wiring Harness For Door Trim Panel D Cable Harness 8P4971035AB

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T0959792D

Audi A5 8T Front Door Control Module Unit Left N/S 8T0959792D

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5QS907338B

Audi A3 S3 8Y Headlight Head Light Lamp Range Control Unit Module ECU 5QS907338B

PLN 408.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4N0959655J

Audi A6 C8 A7 4K Air Module Sensor Control Unit ECU 4N0959655J

PLN 612.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4G5971030DJ

Audi A6 C7 Front Door Wiring Harness Loom Left N/S Passenger's Side 4G5971030DJ

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8P3907357B

Audi S3 8P Xenon Headlight Range Control Module Unit ECU 8P3907357B

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4H0971641E

Audi A8 D4 Centre Console Wiring Loom Cable Harness 4H0971641E

PLN 51.95

Delivery: Jul 16

If paid before 14:00

Part no. 7L0937576B

Audi Q7 4L Fuse Box Trim Cover Panel Electrical Unit Housing 7L0937576B

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 8W1959595

Audi Q5 FY Rear Door Control Module Unit Left Right N/O/S 8W1959595

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 03L906018KD-1

Audi A4 B8 All Road 2.0 TDI CGLC 177HP Quattro Engine ECU Kit 03L906018KD Manual

PLN 949.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8P4971036E

Audi A3 8P Front Door Card Wiring Loom Harness Passenger Side 8P4971036E

PLN 104.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5Q0959595K

Audi A3 8V Rear Door Control Module Unit ECU Left Right N/O/S 5Q0959595K

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8S0947355

Audi TT FY 8S LED Module Light Unit Wiring Harness 8S0947355

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8H0035223C

Audi A4 B7 Cabrio Amplifier BOSE Premium Audio Sound System Module 8H0035223C

PLN 108.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8J0945095B-3

Audi TT 8J Rear Tail Light Lamp Wiring Harness Cable Left N/S 8J0945095B

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8T0971029

Audi A5 S5 8T Front Door Wire Wiring Loom Harness Driver's Side 8T0971029

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 83A947356G

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

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5Q0971405

Audi A3 8V Q2 GA VW Golf CD AdBlue Tank Wiring Harness Cable 1.6 TDI 5Q0971405

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4E0910563C

Audi S8 D3 Digital Radio DAB Tuner Receiver Module Kenwood 4E0035583C

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 4M0907247

Audi A4 B9 A5 F5 Keyless Entry Amplifier Control Box Module Antenna 4M0907247

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8K0959793

Audi A5 8T Door Module Control Unit ECU Front Driver's Side 8K0959793

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4G5971036P

Audi A6 C7 Front Door Door Wiring Harness Loom Cable Passenger Side 4G5971036P

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T0971030AE

Audi S5 8T Door Wiring Wire Loom Cable Harness Front Passenger Side 8T0971030AE

PLN 218.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0907063DJ

Audi RS4 B8 Body Control Unit Module ECU BCM 8K0907063DJ

PLN 365.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8P0959655N

Audi A3 8P Side Air Module Control Unit ECU 8P0959655N

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W1907064BC

Audi A4 B9 Body Control Module BCM Comfort Control Unit Power Supply 8W1907064BC

PLN 474.95

Free delivery: Jul 16

If paid before 14:00

Part no. 06K907425N-1

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

PLN 1,709.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4K0907285A

Audi A6 C8 Relay Holder Support Bracket Mount Carrier 4K0907285A

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8K2907115P-1

Audi A5 8T A4 B8 8K 2.0 TFSI CDNC 211HP Engine ECU Kit 8K2907115P Key + Ignition

PLN 1,139.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4N0035751

Audi A6 C8 Engine Sound Control Unit Module 4N0035751

PLN 759.95

Free delivery: Jul 16

If paid before 14:00

Part no. 1J0941365B

Audi A3 8l TT TTS 8N Fusebox Fuse Relay Box Cover Lid Top End Cap 1J0941365B

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 079903805E

Audi A4 B8 S5 8T 4.2 FSI Alternator Bracket Mount Holder 079903805E

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8P4971693M

Audi A3 8P Door Wiring Harness Loom Cable Rear Left Right N/O/S 8P4971693M

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4M0941824AP

Audi Q7 4M Fuse Box Power Distribution Unit Control Module 4M0941824AP

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0915429F

Audi TT FV A1 8X A3 8V A4 B8 A5 8T A6 C7 Battery Trim Cover Cap Black 8K0915429F

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 04L907309K-1

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

PLN 569.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4F0941824

Audi S6 C6 Wirie Cable Fuse Box Holder Support 4F0941824

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4H0919604H-1

Audi A8L 4H Navigation Dashboard Display Hud Screen 4H0919604H

PLN 617.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8T0907560C

Audi S5 8T 4.2 FSI CAUA Quattro 354HP Engine Control ECU 8T0907560C Automatic

PLN 2,374.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8E5945094A-1

Audi A4 B7 Tail Light Side Panel Lamp Cable Wiring Rear Right O/S 8E5945094A

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. A1635400382

Mercedes ML W163 Fuse Relay Box ECU Cover Trim A1635400382

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 4L0959794B

Audi Q7 4L Door Control Module Electrical Unit ECU Rear Right O/S 4L0959794B

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4K5035225P

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

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 03L903143K

Audi A4 B8 2.0 TDI Alternator Mount Tensioner Pulley Bracket Support 03L903143K

PLN 56.95

Delivery: Jul 16

If paid before 14:00

Part no. 8X0971679C

Audi A1 8X Dash Panel Glove Box Light Wiring Harness Cable Loom 8X0971679C

PLN 56.95

Delivery: Jul 16

If paid before 14:00

Part no. 8T0959795H

Audi A4 B8 Door Control Module Unit ECU Rear Left Right N/O/S 8T0959795H

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8K5907551D-1

Audi S5 8T 3.0 TFSI CGWC 333HP Quattro Engine ECU Kit Ignition + Key 8K5907551D

PLN 1,424.95

Free delivery: Jul 16

If paid before 14:00

Part no. 04L906021BQ

Audi A4 B8 Engine Control Unit Module ECU 2.0 TDI CNHC 163HP 04L906021BQ

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8P0035195M

Audi A3 8P CD Radio Stereo Head Unit Symphony 8P0035195M

PLN 474.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5QF971345

Audi RSQ3 F3 Positive Plus + Battery Wiring Harness Cable Power 5QF971345

PLN 127.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4F0907283

Audi A6 C6 FL Tire Pressure Control Module 4F0907283

PLN 123.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W0971228BH

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

PLN 1,044.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4H0959792H

Audi A8 D4 4H Front Door Control Module Unit ECU Passenger Side 4H0959792H

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 0AM911021E

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

PLN 123.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8X2971030P

Audi S1 8X Front Door Cable Wire Harness Loom 8X2971030P

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 06D911023A

Audi A4 B8 2.0 TFSi Petrol Engine Starter Motor Actuator Unit 06D911023A

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8X0971036N

Audi A1 8X Door Wiring Harness Cable Loom Front Passenger Side N/S 8X0971036M

PLN 61.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8D0951253-1

Audi A4 B6 B7 B8 Q7 4L A6 C7 A8 D4 Multi Use Relay Unit Module 4 Pins 8D0951253

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8H0035225L

Audi A4 B7 Cabrio Aerial Antenna Amplifier Module Unit Right O/S 8H0035225L

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4H0035225N

Audi A8L 4H Antenna Aerial Amplifier 4H0035225N

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4M0959593N

Audi Q7 4M Front Door Control Module Unit ECU Driver's Side 4M0959593N

PLN 189.95

Free delivery: Jul 16

If paid before 14:00

Part no. 079911021G

Audi RS4 B8 Starter Motor Petrol Engine Electrical Unit Actuator 079911021G

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8E0937503

Audi A4 B6 B7 Seat Exeo Fuse Relay Box Holder Board 8E0937503

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 5Q0919283B

PDC Module Audi A3 8V Seat Leon Skoda Octavia Parking Control Unit 5Q0919283B

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8K0927710C

Audi A4 B8 A5 8T Steering Column Connector Plug Socket 8K0927710C

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 4K0915459F-1

Audi A6 C8 Power Disctribution Control Module 4K0915459F

PLN 237.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0919475B

Audi A5 8T Park Parking Assist PDC Distance Control Unit Module 8K0919475B

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8K0959792

Audi A4 B8 Door Module Control Unit Module ECU Front Left N/S 8K0959792

PLN 75.95

Free delivery: Jul 16

If paid before 14:00

Part no. 06J903023A-1

Audi Volkswagen Seat Skoda Petrol Alternator Generator 14V 140A 06J903023A

PLN 142.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0971029AP

Audi A4 B8 Door Wiring Harness Loom Cable Front Driver's Side 8K0971029AP

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4H0937517

Audi A8L 4H Fuse Relay Battery Junction Box Housing 4H0937517

PLN 284.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W1959595D

Audi Q5 FY Rear Door Control Module Unit Left Right N/O/S 8W1959595D

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 420035225R

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

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 2100493N

Audi A5 8T Seat Cable Front Left Right N/O/S Wiring Loom Harness 2100493N

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 82A945094C-2

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

PLN 46.95

Delivery: Jul 16

If paid before 14:00

Part no. 8J0035456

Audi S5 8T Antenna Amplifier Aerial Control Module Unit ECU 8J0035456

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8K0959795A

Audi A4 B8 Rear Door Module Control Unit ECU Left N/S 8K0959795A

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 05C907394D-1

Audi A1 GB Mk2 Engine Module ECU Kit 1.0 TSI Petrol 110HP DLAA 05C907394D Manual

PLN 474.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8P0972051

Audi A3 8P Seat Belt Warning System Wire Harness Cable Loom 8P0972051

PLN 218.95

Free delivery: Jul 16

If paid before 14:00

Part no. 4E0907719

Audi A8 S8 D3 Alarm Module Tow Protection Signal Control Unit Block 4E0907719

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 04L907309R-10

Audi A3 8V 2.0 TDI 150HP DCYA Engine Control ECU Kit 04L907309R Automatic

PLN 569.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0971035BB

Audi A5 8T Front Driver Side Door Wiring Harness Cable 8K0971035BB

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8R0971687B

Audi Q5 8R Rear Door Wiring Loom Harness Left N/S 8R0971687B

PLN 56.95

Delivery: Jul 16

If paid before 14:00

Part no. 4F9035225D

Audi A6 C6 Antenna Amplifier Control Unit Module ECU 4F9035225D

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 8X0959793K

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. 8U0971035AL

Audi Q3 8U Door Loom Wiring Harness Cable Front Right O/S 8U0971035AL

PLN 56.95

Delivery: Jul 16

If paid before 14:00

Part no. 8E1971035CQ

Audi A4 B7 Front Door Cables Wiring Loom Passenger's Side 8E1971035CQ

PLN 94.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8K0959792J

Audi A4 B8 Door Module Front Left N/S Control Unit Module ECU 8K0959792J

PLN 47.95

Delivery: Jul 16

If paid before 14:00

Part no. 8W0907159D

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

PLN 180.95

Free delivery: Jul 16

If paid before 14:00

Part no. 8W6945092N-1

Audi A5 F5 Rear Outer Taillight Lamp Wiring Loom Cable Right O/S 8W6945092N

PLN 42.95

Delivery: Jul 16

If paid before 14:00

Part no. 5Q0971068G

Audi A3 8V VW Golf AU Jetta BU Exhaust Flap Wiring Loom Harness Cable 5Q0971068G

PLN 118.95

Free delivery: Jul 16

If paid before 14:00

Part no. 05L907309-1

Audi A5 F5 2.0 TDI DEZE 163HP Engine ECU Kit BCM2 + Key 05L907309 Automatic

PLN 2,089.95

Free delivery: Jul 16

If paid before 14:00

Part no. 3Q0959435N

Audi Q3 F3 VW Golf Mk7 Entry Keyless Kessy Control Module Unit ECU 3Q0959435N

PLN 42.95

Delivery: Jul 16

If paid before 14:00

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