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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BMW F32 Engine ECU Control Unit 184 HP 420iX B48 2.0 Petrol B48 8689722 KIT

€550.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6C1T-10300-BD

Ford Transit Mk7 Diesel Engine Alternator Generator Unit 2.2 TDCi 6C1T-10300-BD

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8677247-1

Mini Countryman F60 Cooper Cable Alternator Starter Wire 12428677247 8677247

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8835156

BMW U06 X1 U11 High-Voltage Battery Radiator Cooler Line Hose Tube Pipe 8835156

€560.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2049013502

Mercedes W204 S204 Air Module SRS Control Unit ECU A2049013502

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8P0837220D-2

Audi A3 S3 8P Flip Key Fob Remote Control Button Lock Cylinder 8P0837220D SET

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0959760F

Audi A8 D4 Front Seat Backrest Adjustment Module Left Right N/O/S 4H0959760F

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1645400074

Mercedes W164 W251 Front Seat Wiring Loom Harness Left N/S A1645400074

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A9065410040

Mercedes Sprinter W906 Battery Bracket Mount Carrier Support A9065410040

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. C1BB-13404-AD-2

Ford Fiesta Mk7 Rear Tail Light Lamp Wiring Cable Outer Right O/S C1BB-13404-AD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8727997

BMW F44 Gran Coupe Door Wiring Harness Rear Door Right Left N/O/S 8727996

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1J0035411G

Volkswagen Golf Gti 1J Rear Door Speaker Loudspeaker Left Right N/O/S 1J0035411G

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9153137

BMW F01 F02 F03 Holder Bracket Control Unit Top Rear Side View 9153137

€23.95

Free delivery: Sep 15 – 16

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Part no. 8C1T-14A073-CB

Ford Transit Mk7 Body Control Module BCM Unit Controller 8C1T-14A073-CB

€32.95

Free delivery: Sep 15 – 16

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Part no. F1ET-14B345-AA

Ford Focus Mk3 Side Air Module Crash Impact Sensor Control Unit F1ET-14B345-AA

€23.95

Free delivery: Sep 15 – 16

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Part no. 6789514

BMW X6 E71 ICM Integrated Chassis Management Control Unit Brakes 6789514

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6G9T-14A076-CA

Ford Mondeo MK4 Fuse Box Cover Panel Hosing Lid 6G9T-14A076-CA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8632692

BMW X5 F15 N20 Petrol Wiring Harness Transmission Gearbox Module Cable 8632692

€175.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6C0907359

Audi A4 B8 Air Suspension Module Regulation Control Unit 6C0907359

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6H32-18K891-AA

Range Rover Sport L320 Aerial Antenna Amplifier Unit 6H32-18K891-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4L0907290A

Audi Q7 4L Door Control Unit Module ECU Front Right O/S 4L0907290A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6926333

Door Cable BMW E93 Convertible Wiring Loom Front Cables Passenger Side 6926332

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9366407

BMW F20 F21 F30 F31 F32 Body Comfort Module FEM ECU LR01 Control Unit 9366407

€161.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8702093-1

Head-Up Display Hud Mini Cooper F54 F55 F56 F57 Project Dash Screen 8702093

€75.95

Free delivery: Sep 15 – 16

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Part no. 7639661

BMW F20 Alternator Engine Alternator Generator Denso 170A Petrol N55 7639661

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8E1971035CQ

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

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03G906056S-3

Audi A3 8P 1.9 TDI BLS 105HP Engine Control ECU Kit BCM + Key 03G906056S Manual

€218.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A9078209400

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit A9078209400

€104.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 52185648

Vauxhall Movano C Electronics Control Module Unit 52185648

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2218203375

Mercedes W221 Bluetooth Antenna AMP Amplifier Module A2218203375

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009002201

Mercedes R172 W204 W212 C218 Fuel Pump Module Control Unit A0009002201

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7110854

BMW Z4 Series E85 Roadster Head Lamp Cleaning Device Container 7110854

€37.95

Free delivery: Sep 15 – 16

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Part no. 2Q0980653H

Seat Ibiza KJ1 VW Polo MK6 Front Camera Lane Assist Control Unit 2Q0980653H

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03L906018GF-3

Volkswagen Scirocco Mk3 2.0 TDI CFHC 140HP Engine Control Unit ECU 03L906018GF

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AV1T-15K600-EK

Ford Fiesta Mk7 Body Control Module Unit BCM AV1T-15K600-EK

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5E9035577

Skoda Octavia 5E Mk3 Aerial Antenna Amplifier Booster Module 5E9035577

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2205404408

Mercedes W220 Door Exit Wiring Loom Cable Connector Left Right N/O/S A2205404408

€23.95

Free delivery: Sep 15 – 16

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Part no. 1K0955559AB

Volkswagen Golf Mk5 Rain Sensor Front Windscreen Control Unit Module 1K0955559AB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4L0907289A

Audi Q7 4L Comfort Control Module CCM Body Control Unit ECU 4L0907289A

€23.95

Free delivery: Sep 15 – 16

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Part no. 7LA937550A

VW Transporter T6 Fusebox Module Power Distribution Control Module 7LA937550A

€23.95

Free delivery: Sep 15 – 16

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Part no. 3C8035195G

VW Volkswagen Caddy Mk2 Radio Head Unit RNS DAB Media Player Unit 3C8035195G

€189.95

Free delivery: Sep 15 – 16

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Part no. 4G0907637H

Audi A6 C7 ESP Yaw Rate Module Control Unit Sensor ECU 4G0907637H

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2128270228-SEL

Mercedes W212 Roof Antenna Amplifier Shark Selenite Grey - 992 A2128270228

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 81A955559A

Volkswagen Audi Skoda Windscreen Rain Sensor Control Unit 81A955559A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7P5971693F

Porsche Cayenne 92A Wiring Loom Harness Cable 7P5971693F

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. LR014002-2

Land Rover Discovery 4 L319 Rear Taillight Lamp Wiring Cable Right O/S LR014002

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06L971627M

Audi Audi Q5 FY 2.0 TFSI QUATTRO Petrol Fuel Injectors Wiring Harness 06L971627M

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8X0971035BG

Audi A1 8X Front Door Loom Wiring Harness Cable Driver's Side O/S 8X0971035BE

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5A656B3

BMW G20 Air Module Control Unit SRS ECU 5A656B3

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1K0971250AM

Volkswagen VW Scirocco Mk3 Negative Battery Terminal Cable Wiring 1K0971250AM

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6960225

BMW E65 E66 E67 Sensor Vehicle Centre Air Control Unit Module 6960225

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6Y6945111C-1

Skoda Fabia MK1 6Y Rear Tail Light Lamp Wiring Harness Cable Left N/S 6Y6945111C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 0AD927755L

Volkswagen Touareg 7L Transfer Box Control Unit Module ECU Automatic 0AD927755L

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6956750

BMW E87 Control Unit PDC Parking Sensor Module Nautikblau Blue - A21 6956750

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BJ32-17509-AD

Range Rover Evoque L538 Wiper Control Unit Module BJ32-17509-AD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6825519

BMW X2 F39 F45 X1 F48 High Voltage Cable Cover Duct Bracket Channel 6825519

€28.95

Free delivery: Sep 15 – 16

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Part no. YTA000100

Range Rover L322 Positive Plus + Battery Alternator Cable Lead 4.4 7514551

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. LK62-9D370-BC

Range Rover Velar L560 Fuel Pump Control Module ECU 2.0 Diesel LK62-9D370-BC

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1698204726

Mercedes-Benz A-Class W169 Rear Left Door N/S Control Unit Module A1698204726

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0907064DD

Audi A4 B8 A5 8T Body Control Module BCM Comfort Control Unit 8K0907064DD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5NA971693K

Volkswagen Tiguan Mk2 Door Wiring Loom Harness Rear Left N/S 5NA971693K

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2469017000

Mercedes W176 Windscreen Rain Sensor Unit Module A2469017000

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9284442

BMW F20 F30 Mini F56 Air Conditioning Module Control Unit 9284442

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2125455640

Mercedes W212 Battery Holder Mount Bracket Support E-Class A2125455640

€23.95

Free delivery: Sep 15 – 16

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Part no. V23234-A0001-X037

Porsche 718 Boxster 982 Relay 12V 20/30A V23234-A0001-X037

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. C1BT-14K138-BDE

Ford Fiesta Mk7 Door Wiring Loom Harness Front Left N/S C1BT-14K138-BDE

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9211493

BMW E88 Convertible Roof Folding Top Control Module Unit 9211493

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03L906018FL

Seat Altea Mk1 2.0 TDI CFHC 140HP Engine Control Unit ECU 03L906018FL Manual

€123.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1715405045-1

Mercedes SLK R171 Central Gateway Module ECU Control Unit A1715405045

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BM5T-18K811-BA

Ford Focus Mk3 Multimedia Head Unit Control Switch Panel BM5T-18K811-BA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3428557

BMW Z4 E86 Alarm System Ultrasonic Roof Control Module 3428557

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06J903023G

VW Volkswagen Polo GTI 6R Golf Mk7 Alternator Generator 14V 140A 6J903023G

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. CVS-012-5

CVS-012-5 Expansion Module Electrical Unit Light Control Module

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2711504733

Mercedes W204 Injection Electrical Wiring M271 Petrol Engine Cable A2711504733

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 281480007R

Smart A453 Renault Trafic MK3 Front Dashboard Tweeter Speaker 281480007R

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K5945095AA-1

Audi A4 B8 Saloon Rear Lamp Tail Light Wiring Harness Plug Left N/S 8K0973706

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1765450000

Mercedes-Benz A-Class W176 Bluetooth Unit Module Bracket Holder A1765450000

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0971104J

Audi A8L 4H Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 4H0971104J

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0045468440

Mercedes W177 Power Distributor Connector Plug Unit A0045468440

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V3971036

Audi A3 S3 8V Front Door Card Wiring Harness Passenger Side 8V3971036

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8P0035195G

Audi A3 8P Radio Multimedia Player CD Head Unit 8P0035195G

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0919604H-2

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

€165.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9290611

Mini Cooper R57 LCI R58 R59 Passenger Door Wiring Loom Harness Cables

€23.95

Free delivery: Sep 15 – 16

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Part no. VW-Remote-Key

VW Passat Radio Remote Control Alarm Key Fob Control Unit Module

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YTA000010

Range Rover L322 Positive Plus + Starter Wiring Harness Cable 4.4 1H4Z-14N144-EA

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. KT1T18B955EB

Ford Transit Connect Mk2 II Dashboard Display Screen Panel KT1T-18B955-EB

€123.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DN1T-15K600-ED

Ford Fiesta Mk7 Transit Courier Body Control Module BCM ECU DN1T-15K600-ED

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0945093H-2

Audi A8 D4 Rear Taillight Tail Light Lamp Wiring Inner Left N/S 4H0945093H

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9P4971111

Porsche 718 Boxster 982 Power Steering Rack Wiring Loom 9P4971111

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0907064BC

Audi A4 B9 Body Comfort Control Module ECU Unit 8W0907064BC

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. C1BT-14A584-BDE

Ford Fiesta Mk7 Door Wiring Loom Harness Front Right O/S C1BT-14A584-BDE

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0045428718-BEB

Mercedes R171 W203 Parking Distance Sensor PDC Benitoite Blue - 950 A0045428718

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9137703

Mini Cooper One R55 R56 Door Wiring Harness Factory Right O/S 9137703

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 0AM911023T

Volkswagen Touran 1T 1.4 TSI Petrol Engine Starter Motor 0AM911023T

€23.95

Free delivery: Sep 15 – 16

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Part no. AV1T-14A584-HCD

Ford B-Max Mk1 Door Loom Wiring Harness Cable AV1T-14A584-HCD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7PP907283

Audi RS6 C7 Tire Tyre Pressure Monitor System Moduel Control Unit ECU 7PP907283

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8X0035223D

Audi Q3 8U Amplifier BOSE Premium Audio Sound System Module 8X0035223D

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0937517

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

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1K0971230KE

Volkswagen VW Caddy 2K Alternator Wiring Loom Harness 1.9 TDI 1K0971230KE

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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