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 A4 B9 8W 35 TFSI DMSB 150 HP Engine ECU Kit Body + Key 06N907309A Automatic

PLN 1,614.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8N7035223A

Audi TT 8N Roadster Bose Amplifier Audio Sound AMP 8N7035223A

PLN 512.95

Free delivery: Jul 15

If paid before 14:00

Part no. 07K903143F

Audi RS3 8V A3 8P Alternator Mounting Bracket Carrier 07K903143F

PLN 474.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8T8971029AM

Audi A5 8T Front Door Wiring Loom Harness Cable Driver's Side 8T8971029AM

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4F1937545

Audi R8 42 Fuse Box Electrical Connector Relay Control Unit Module 4F1937545

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 6R0915321B

Audi A1 8X Battery Tray Base Holder Support Mount 6R0915321B

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8T0907468F

Audi A5 8T Gateway Control Module Unit ECU 8T0907468F

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 8P0035186AB-1

Audi A3 8P Multimedia Radio CD Player Head Unit 8P0035186AB

PLN 237.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8T0907468M

Audi A5 8T Central Gateway Module ECU Control Unit Lear 8T0907468M

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 4H0907412

Audi A8 D4 Ambient Lighting Control Module Unit ECU 4H0907412

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 1K2971615A

Audi A3 8P Engine Bay Wiring Holder Harness Loom Cable Guide Bracket 1K2971615A

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8K0941031D-2

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

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 4F0959793T

Audi Q7 4L Door Module Front Driver's Side Control Unit ECU 4F0959793T

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 6R0959772A

Audi A1 S1 8X Heated Seat Control Unit Relay Module Unit 6R0959772A

PLN 123.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4F0959794A

Audi A6 S6 Avant Quattro 4F Door Control Unit ECU Rear Right O/S 4F0959794A

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 06H971627

Audi A5 8T 2.0 TFSI Petrol Fuel Injectors Wiring Cable Harness 06H971627

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4L0971225E

Audi Q7 4L Positive Battery Terminal Cable Lead 4L0971225E

PLN 51.95

Delivery: Jul 15

If paid before 14:00

Part no. 7L0971225

Audi Q7 4L 4.2 TDI Quattro Positive HV Battery Terminal Cable Harness 7L0971225

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8U0945093M-1

Audi Q3 8U Tail Light LED Lamp Wiring Loom Plug Rear Left N/S Outer 8U0945093M

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 83A971693H

Audi Q3 RSQ3 F3 Door Wiring Harness Loom Cable Rear Left Right N/O/S 83A971693H

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 80A907777N

Audi Q5 FY Active Suspension Module Damping Chassis Control Unit EFP 80A907777N

PLN 1,139.95

Free delivery: Jul 15

If paid before 14:00

Part no. 03L906022FL-1

Audi A6 C6 2.0 TDI 233HP CAGB Engine Control ECU Kit 03L906022FL Key + Lock

PLN 759.95

Free delivery: Jul 15

If paid before 14:00

Part no. 06D911021B

Audi A4 B8 A5 8T Engine Starter Motor Actuator Unit Petrol 06D911021B

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4G8959795G

Audi A6 C7 Rear Door Control Module Unit ECU Left Right N/O/S 4G8959795G

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8E1910115A

Audi A4 B7 Quattro Engine Control Unit ECU 2.0 TFSI 200HP BWE 8E1910115A

PLN 332.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8V0906259J-2

Audi S3 8V 2.0TFSI DJHA 310HP Quattro Engine Control Kit 8V0906259J Automatic

PLN 1,234.95

Free delivery: Jul 15

If paid before 14:00

Part no. 1J0971243B

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

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 04E0919064

Audi A8 D3 Door Lightning Module Control Unit Front Rear 04E0919064

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 4H0909131

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

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8J0907376A

Audi TT 8j TTS Magnetic Suspension Damper Control Unit 8J0907376A

PLN 94.95

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. 8V7035225B

Audi A3 8V Antenna Amplifier Rear Right O/S 8V7035225B

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8T2035195C

Audi A4 B8 Radio Player Symphony Head Unit CD Player Stereo 8T2035195C

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. 8K0915429C

Audi A6 C7 Battery Positive Terminal Cover 8K0915429C

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 420035223C

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

PLN 1,804.95

Free 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. 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. 03L906018JR-1

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

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8T0959795J

Audi A5 8T Rear Door Module Control Unit Module ECU Left Right N/O/S 8T0959795J

PLN 61.95

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. 4F0959655B

Audi A6 C6 Air Module Control Unit ECU Module 4F0959655B

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8R0959655B

Audi Q5 8R Air Control Unit Module ECU 8R0959655B

PLN 123.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8J0971349CD

Audi TT 8J Alternator Main Cable Wiring Harness Loom 8J0971349CD

PLN 113.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8W0971036D

Audi A4 B9 Front Door Wiring Harness Cable Loom Passenger Side 8W0971036D

PLN 142.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8K0955557C

Audi A4 B8 Crash Impact Sensor Unit Air Module 8K0955557C

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 8S0820047

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

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 4M0959792H

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

PLN 189.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8X0971029S

Audi A1 8X Door Loom Wiring Harness Cable Front Driver Side 8X0971029Q

PLN 94.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8P4971693S

Audi A3 8P Rear Door Wiring Loom Harness Left Right N/O/S 8P4971693S

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4F0941003C-2

Audi A6 C6 Headlamp Headlight Front Left N/S Harness Wire Loom Cable 4F0941003C

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 4K0906121C

Fuel Pump Control Audi A4 B9 A5 F5 A6 C8 Pump Unit Module ECU 4K0906121C

PLN 94.95

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. 09G927750CA

Audi TT 8N Automatic Gearbox Module Control Unit ECU 09G927750CA

PLN 569.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4H0907063DG

Audi A6 C7 A7 4G A8 D4 BCM Body Control Module Unit ECU 4H0907063DG

PLN 807.95

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. 8K5035570

Audi A4 B8 Aerial Antenna Disturbance Suppressor 8K5035570

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 4E0907383J

Audi A4 B9 Tow Bar Trailer Towing Control Module Unit 4E0907383J

PLN 427.95

Free delivery: Jul 15

If paid before 14:00

Part no. 059907309L-1

Audi A6 C8 A7 4K 3.0TDI Quattro CCVB 286HP Engine ECU Kit 059907309L Automatic

PLN 1,709.95

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. 8W0054635A

Audi A3 8V PDC Parking Sensor Control Unit Module Vodafone Automotive 8W0054635A

PLN 208.95

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. 8V0035736

Audi A3 8V Music Interface Multimedia Connection Module 8V0035736

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 4N0955557A

Audi A6 C8 A7 C8 Door Crash Impact Sensor Front Left N/S Side 4N0955557A

PLN 42.95

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. 4H0907801E

AUDI A7 4G8 Electric Handbrake Control Module TRW 4H0907801E

PLN 61.95

Free delivery: Jul 15

If paid before 14:00

Part no. 4E0919063

Audi A1 8X A3 8V Door Light Emitting Diode Mount Bracket LED Module 4E0919063

PLN 42.95

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. 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. 4M0906093N

Audi A4 S4 B9 Petrol Fuel Pump Control Unit Module ECU 4M0906093N

PLN 75.95

Free delivery: Jul 15

If paid before 14:00

Part no. 1K0907719B

Audi A3 8P Anti Theft Alarm System Control Module Unit ECU 1K0907719B

PLN 47.95

Delivery: Jul 15

If paid before 14:00

Part no. 8K0959663D

Audi Q3 8U A3 8P A6 C7 Voltage Stabilizer Converter Control Module 8K0959663D

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 03L906018JG-1

Audi A5 8T 2.0 TDI CGLC 177HP Diesel Engine Control ECU Kit 03L906018JG Manual

PLN 617.95

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. 8W0971035BA

Audi A4 S4 RS4 8W A4 B9 Door Wire Harness Front Passenger Side 8W0971035BA

PLN 46.95

Delivery: Jul 15

If paid before 14:00

Part no. 8T0919611-1

Audi A4 B8 Head Unit Media Player Controller Knob Switch Panel 8T0919611

PLN 237.95

Free delivery: Jul 15 – 16

If paid before 14:00

Part no. 4M0906093L

Audi Q7 4M 3.0 TDI Fuel Pump Control Unit Module ECU 4M0906093L

PLN 142.95

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. 8T0941003AL-2

Audi A5 8F Headlight Headlamp Xenon Connector Wire Plug Right O/S 8T0941003AL

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8K0959792E

Audi A4 B8 A5 8T Front Door Module Control Unit Module ECU Left N/S 8K0959792E

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8U0959655C

Audi Q3 8U Air Module ECU Sensor Control Unit 8U0959655C

PLN 474.95

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. 4G0035736-1

Audi A6 Allroad Avant A7 4G8 RS6 USB Charging Socket Aux Connection 4G0035736

PLN 379.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8K0959663B

Audi A5 8T Voltage Converter Stabilizer Control Module Unit ECU 8K0959663B

PLN 42.95

Delivery: Jul 15

If paid before 14:00

Part no. 8W0959655B

Audi A4 B9 A5 S5 F5 Air Module Control Unit ECU 8W0959655B

PLN 949.95

Free delivery: Jul 15

If paid before 14:00

Part no. 8R0907468A

Audi A4 B8 Quattro A5 8T Gateway Control Unit Module 8R0907468A

PLN 42.95

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. 4N0035223C

Audi A6 C8 Audio Sound Amplifier Bang & Olufsen Stereo System Module 4N0035223C

PLN 569.95

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

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