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 A3 8V 2.0 TDI DFGA Diesel Starter Motor 02E911022C

€28.95

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Part no. 8V1035035B

Audi A3 S3 Q2 RS3 Multimedia Navigation Card Reader Head Unit 8V1035035B

€560.95

Free delivery: Sep 11 – 14

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Part no. 8K0959795A

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 03L906018JG

Audi A5 8F 2.0 TDI CGLC 177HP Diesel Engine Control Unit ECU 03L906018JG Manual

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 059903015P

Volkswagen Touareg Audi Q7 Water Cooled Alternator 190A 059903015P

€80.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8K0959663F

Audi A6 C7 Voltage Converter Stabilizer Control Module Unit ECU 8K0959663F

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8W0907428C

Audi A4 B9 Camera Control Module Unit ECU 8W0907428C

€332.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 7L0864643B

Battery Cover Audi Q7 4L VW Touareg 7P Porsche Cayenne 9PA Top Cap 7L0864643B

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8W2035043E

Audi A4 B9 MMI Multimedia Sat Nav Navigation Control Head Unit 8W2035043E

€474.95

Free delivery: Sep 11 – 14

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Part no. 4H0907658B

Audi A3 8V A5 A6 A7 Air Quality Sensor Unit 4H0907658B

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 06L971627A

Audi S1 8X S3 8V VW Golf R Mk7 2.0 TFSI Fuel Injectors Wiring Harness 06L971627A

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8E0907637

Audi A4 B7 YAW Sensor ESP Rotation Rate Acceleration Control Unit 8E0907637

€32.95

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Part no. 8V0857273P

Audi A3 8V Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273P

€47.95

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Part no. 8K0937517A

Audi A4 B8 A5 8T Battery Postive Terminal Distribution Power Board 8K0937517A

€23.95

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Part no. 8K0959792J

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

€23.95

Free delivery: Sep 11 – 14

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Part no. 8P0959655J

Audi A3 E 104 T Air Module ECU Sensor Control Unit 8P0959655J

€23.95

Free delivery: Sep 11 – 14

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Part no. 8P0035399B

Audi A3 8P Speaker Tweeter Front Left Right N/O/S Pillar A 8P0035399B

€23.95

Free delivery: Sep 11 – 14

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Part no. 8K0907063C

Audi S5 8T Body Comfort Control BCM Supply Module Unit ECU 8K0907063C

€23.95

Free delivery: Sep 11 – 14

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Part no. 03L911021C

Audi A4 B8 2.0 TDI CAGA Diesel Engine Starter Motor Bosch Unit 03L911021C

€42.95

Free delivery: Sep 11 – 14

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Part no. 8K0959655B

Audi S5 8T Air Module Control Unit SRS System ECU 8K0959655B

€123.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4E0910563C

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

€42.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4F0907468M

Audi A6 C6 Diagnostic Interface Gateway Module ECU Control Unit 4F0907468M

€23.95

Free delivery: Sep 11 – 14

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Part no. 8P3907357B

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8R0919604A-1

Audi A5 8T Multimedia Radio Sat Nav Screen Display Head Unit 8R0919604A

€37.95

Free delivery: Sep 11 – 14

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Part no. 5QA919294C

Audi Seat Skoda Volkswagen PDC Parking Sensor Control Unit Module 5QA919294C

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 06L971627K

Audi TT FY 2.0 TFSI Petrol Fuel Injectors Wiring Harness 06L971627K

€23.95

Free delivery: Sep 11 – 14

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Part no. 8H0959985B

Audi Q7 4L Keyless Module ECU Door Lock Control Unit 8H0959985B

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 0C8927750AL

Audi Q7 4L 3.0 TDI Automatic Gearbox Module Control Unit ECU Diesel 0C8927750AL

€170.95

Free delivery: Sep 11 – 14

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Part no. 8K0959795F

Audi Q5 8R Rear Door Control Module Unit ECU Left Right N/O/S 8K0959795F

€23.95

Free delivery: Sep 11 – 14

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Part no. 5Q0959595K

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8XA959655A

Audi A1 8X Air Module Control Sensor SRS System ECU Unit 8XA959655A

€75.95

Free delivery: Sep 11 – 14

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Part no. 8P4035223D

Audi S3 8P Audio Sound BOSE Amplifier Stereo System Module 8P4035223D

€28.95

Free delivery: Sep 11 – 14

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Part no. 8R0919604

Audi A5 8T Multimedia Radio Sat Nav Screen Display Head Unit 8R0919604

€66.95

Free delivery: Sep 11 – 14

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Part no. 1S0919275D-BLK

Audi Q3 8U PDC Parking Distance Control Sensor Black - Z9Y 1S0919275D

€23.95

Free delivery: Sep 11 – 14

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Part no. 4L0035382B

Audi Q7 4L Boot Trunk Subwoofer Rear Bass Speaker 4L0035382B

€23.95

Free delivery: Sep 11 – 14

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Part no. 8W0959595H

Audi A5 F5 Rear Door Control Module Unit ECU Left Right N/O/S 8W0959595H

€23.95

Free delivery: Sep 11 – 14

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Part no. 5Q0959592F

Door Module Audi A3 8V Volkswagen Golf 7 Control ECU Front Left N/S 5Q0959592F

€23.95

Free delivery: Sep 11 – 14

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Part no. 4G0035061N

Audi A5 8T Stereo DAB CD Player Radio Receiver Head Unit 4G0035061N

€284.95

Free delivery: Sep 11 – 14

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Part no. 8K0907063DG

Audi Q5 8R Body Control Comfort Unit Module Unit 8K0907063DG

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8K0959663D

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

€23.95

Free delivery: Sep 11 – 14

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Part no. 02E911022H

Audi S3 8Y 2.0 TFSI Starter Motor Engine Petrol 02E911022H

€32.95

Free delivery: Sep 11 – 14

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Part no. 4G0971845A

Audi A6 C7 Fuse Relay Box Sam Control Module 4G0971845A

€23.95

Free delivery: Sep 11 – 14

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Part no. 3G0962243C

Volkswagen Seat Skoda Audi Tailgate Module Controller 3G0962243C

€32.95

Free delivery: Sep 11 – 14

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Part no. 7M0951253A

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 7M0951253A

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 141951253B

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 141951253B

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8T2035186P

Audi A4 B8 Radio Media Player Audio CD Head Unit Player Concert 8T2035186P

€42.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8W0959121B

Audi A4 B9 A5 F5 Pressure Sensor Pedestrian Protection System 8W0959121B

€56.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 06H971627

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

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8X0915181

Audi A4 B8 A5 8T TT Mk2 Negative Battery Terminal Cable Lead 8X0915181

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8T0919611-1

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

€66.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4H0907357A

Audi A7 4G8 Headlight Head Light Lamp Range Control Unit Module ECU 4H0907357A

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8J0035223D

Audi TT 8J Audio Amplifier Radio Sound BOSE Unit 8J0035223D

€569.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8K0959663B

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8V0971104

Audi A3 S3 8V Sportback Wiring Harness PDC Parking Sensor Rear Bumper 8V0971104

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8K0971104AF

Audi A5 8T 5 Door Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104AF

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 1K0971228N

Audi A3 VW Golf Caddy Battery Lead Positive Cable Plus Pole Wiring 1K0971228N

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8K0907063AJ

Audi A5 8T Body Control Comfort Unit Module BCM Unit ECU 8K0907063AJ

€61.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 1K0937124P

Audi A3 S3 8P Engine Bay SAM Relay Fuse Box Module Control Unit ECU 1K0937124P

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8E0971687L

Audi A4 B7 Door Harness Loom Cable Wiring Rear Left Right N/O/S 8E0971687L

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8T0959792G

Audi A4 B8 Front Door Lock System Module Right O/S Control Unit ECU 8T0959792B

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5M0907357G

Audi Q3 8U Headlight Range Control Unit Module ECU 5M0907357G

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8W0971687AQ

Audi A4 B9 Door Wiring Loom Harness Rear Left Right N/O/S 8W0971687AQ

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4H0971104S

Audi A8 D4 Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 4H0971104S

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8K0959793N

Audi Q5 8R Front Door Module Control Unit ECU Driver's Side 8K0959793N

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8X0907357C

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 06E971627M

Fuel Injector Wiring Audi S4 B8 A6 A7 C7 4G 3.0 V6 TFSI Wiring Cable 06E971627M

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4F0959792R

Audi A6 C6 Front Door Left N/S Module Unit Control ECU 4F0959792R

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5Q0959592D

Door Module Audi A3 8V VW Golf 7 Seat Leon 3 Front Right O/S 5Q0959592D

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4F0910655Q

Audi A6 C6 4F Control Unit Air Module ECU Bosch 4F0959655G

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8P0862335Q-1

Audi A4 B7 Harman Becker Bluetooth Module Interface Control Unit 8P0862335Q

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8R0907468F

Audi A5 8T Diagnostic Interface Gateway Control Module Unit ECU 8R0907468F

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8J0971030AE

Audi TT 8J Front Left N/S Door Wiring Harness Cable Lom 8J0971030AE 8J0971030AB

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8K0959793A

Audi A5 8T Coupe Driver's Door Module Control Unit 8K0959793A

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4G8959107S

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8W0959592M

Audi A4 B9 A5 F5 Front Door Module Control Unit ECU Passenger Side 8W0959592M

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4G0907637L

Audi RS6 C7 Acceleration Yaw Rate Sensor Module Control Unit ECU 4G0907637L

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8J0971237A

Audi TT 8J Starter Motor Negative Battery Wiring Harness Cable 8J0971237A

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8W0959595M

Audi A4 B9 A5 F5 Door Module Rear Right Left N/O/S Control Unit 8W0959595M

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4N0035736A

Audi A6 C8 SD SIM Card Double Twin USB Module Multimedia Reader Port 4N0035736A

€47.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8XA971679C

Audi A1 8X Dashboard Glove Box Wiring Loom Cable Storage Harness 8XA971679C

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 06K907425C-1

Audi Q3 8U 2.0 TFSI CULB 180HP Quattro Engine ECU Kit 06K907425C Ignition + Key

€227.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 06F971082F

Audi TT 8J 2.0 TFSI Petrol Fuel Injectors Wiring Harness 06F971082F

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4L0907335

Audi Q7 4L Quattro S Line Keyless Entry Antenna Control Module 4L0907335

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8T0907468K

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4H0907637K

Audi A8L 4H Yaw Rate Domain Control Module Unit ECU 4H0907637K

€42.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5Q0959651B

Audi A3 8V Front Impact Sensor Crash Detection Module Unit 5Q0959651B

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4L0907290

Audi Q7 4L Gateway Convenience Module Unit Control ECU 4L0907290

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8W0906093G

Audi A4 B9 A5 F5 Petrol Engine Fuel Pump Control Unit Module 8W0906093G

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8X0959793K

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4H0907160E

Audi A6 C7 A7 4G A8 D4 Exhaust Heating Control Unit Module 4H0907160E

€51.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4G8959792G

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 3Q0907530AG

Audi Q2 Q3 F3 1.5 TFSI Gateway Control Unit Module ECU 3Q0907530AG

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8K0959663

Audi A4 B8 A5 8T Voltage Stabilizer Converter Control Unit Module 8K0959663

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4M0907247

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8U0907468AC

Audi A1 8X Q3 8U Central Gateway Control Unit Module Relay ECU 8U0907468AC

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4H0907063CD

Audi A8L 4H Onboard Comfort Control Module CCM Unit ECU 4H0907063CD

€47.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4H0881073B

Audi A8L 4H Front Seat Air Pump Control Module Unit 4H0881073B

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 4E0910217C

Audi Q7 4L Front Camera FAS Lane Assistance Control Unit 4E0910217D

€56.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5QA919294J

Audi Seat Skoda Volkswagen PDC Parking Sensor Control Unit Module 5QA919294J

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

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