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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Mercedes W205 C200 264.915 198HP Engine Control ECU Kit A2649000700 Automatic

€560.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9496815

Front Impact Sensor BMW F70 G05 G14 G15 G29 Safety Crash Module Unit 9496815

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0907468T

Audi Q5 8R Gateway Module Control Unit ECU 8R0907468T 8R0907468C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FW93-19C024-AB

Range Rover Sport L494 Bluetooth Antenna Amplifier Module FW93-19C024-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AT1T-15T850-AA

Ford Transit Connect PDC Parking Aid Warning Control Module Unit AT1T-15T850-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425C-2

VW Scirocco Mk3 2.0 TFSI CULA 220HP Engine ECU Kit BCM + Key 06K907425C Manual

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0972051

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

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906021LG-1

Audi A3 8P 2.0 TDI BKD 140HP Engine Control Unit ECU Kit 03G906021LG Manual

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8689722-2

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

€550.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8677247-1

Mini Countryman F60 Cooper Cable Alternator Starter Wire 12428677247 8677247

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9261591-IBB

BMW F20 F21 F30 PDC Front Ultrasonic Parking Sensor PDC Set x2 Imperial Blue-A89

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2049013502

Mercedes W204 S204 Air Module SRS Control Unit ECU A2049013502

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6928366-1

BMW E60 E61 Rear Bumper PDC Wiring Loom Cables Set 6928366

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A1645400074

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9065410040

Mercedes Sprinter W906 Battery Bracket Mount Carrier Support A9065410040

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. N1XT-18C612-AD

VW Volkswagen Amarok NF A/C Air Conditioning Control Unit Module N1XT-18C612-AD

€113.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. F1ET-14B345-AA

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959107R

Volkswagen T-Roc A11 Electric Boot Lid Tailgate Control Unit Module 5Q0959107R

€99.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2112A650AC-4

Ford Transit MK7 Engine Unit ECU Module 2.2 TDCi P8FA 86HP Manual BK2112A650AC

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X23-14D374-AE

Jaguar XF X250 Restraint Control Unit Module Controller 8X23-14D374-AE

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8632692

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

€175.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H22-18N379-AA

Range Rover Sport L320 Battery Tray Holder Bracket Inner Left N/S DWM500110

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YWB101210

Land Rover 5-Pin Black Relay Multi-Use 12V 20A Tyco YWB101210

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 270600Y030

Toyota Yaris P9 Alternator 1.3 VVT-i 100HP Petrol Generator Module 270600Y030

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0907359

Audi A4 B8 Air Suspension Module Regulation Control Unit 6C0907359

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJA6707AA

Jaguar XK8 X100 Black 5 Pin Fuse Relay Module Unit LJA6707AA

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 6926333

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7639661

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

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E1971035CQ

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9078209400

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit A9078209400

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 52185648

Vauxhall Movano C Electronics Control Module Unit 52185648

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218203375

Mercedes W221 Bluetooth Antenna AMP Amplifier Module A2218203375

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009002201

Mercedes R172 W204 W212 C218 Fuel Pump Module Control Unit A0009002201

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7110854

BMW Z4 Series E85 Roadster Head Lamp Cleaning Device Container 7110854

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0980653H

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

€75.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5E9035577

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7LA937550A

VW Transporter T6 Fusebox Module Power Distribution Control Module 7LA937550A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7536024-2

Mini R50 Engine Control Module ECU 115HP 1.6 Petrol Automatic W10B16A 7536024

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C8035195G

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

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9157584

BMW E64 Convertible Components Aerial Antenna Diversity Cable AM FM TV 6917457

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0907637H

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

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9346258

BMW F10 F20 F30 F32 Anti Theft Alarm Siren Horn System 9346258

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2128270228-SEL

Mercedes W212 Roof Antenna Amplifier Shark Selenite Grey - 992 A2128270228

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EB3T-10C652-AA

Ford Ranger Mk3 Positve Battery Cable Loom Wire Wiring EB3T-10C652-AA

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 281000Y020

Toyota Yaris Mk2 Starter Motor 1.3 VVT-i Petrol Manual Engine 1NR-FE 281000Y020

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5DS010161-1

Audi A8 D4 Trailer Hook Tow Bar Control Module Unit 5DS010161

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C2D51458

Jaguar XF X260 X250 XE X760 XJ X351 Remote Key Fob Locking Button C2D51458

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CC1T-10C652-AG

Ford Transit Custom Mk8 Negative Battery Terminal Sensor Unit CC1T-10C652-AG

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5971693F

Porsche Cayenne 92A Wiring Loom Harness Cable 7P5971693F

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A98A87

BMW F74 Gran Coupé Front Door Wiring Loom Harness Cable 5A98A86

€42.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. DT1T-14B321-AE

Ford Transit Connect Mk2 Restraint Air Module Control Unit ECU DT1T-14B321-AE

€89.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. LR049362-2

Range Rover L538 Xenon Headlight Light Lamp Harness Loom Left N/S EJ32-14290-CED

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 1K0971250AM

Volkswagen VW Scirocco Mk3 Negative Battery Terminal Cable Wiring 1K0971250AM

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6960225

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 0AD927755L

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519003701

Mercedes W212 OM651.924 E220CDI 170HP Engine Control Unit Module ECU A6519003701

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6956750

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. YTA000100

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

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5NA971693K

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

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469017000

Mercedes W176 Windscreen Rain Sensor Unit Module A2469017000

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9284442

BMW F20 F30 Mini F56 Air Conditioning Module Control Unit 9284442

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2125455640

Mercedes W212 Battery Holder Mount Bracket Support E-Class A2125455640

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. V23234-A0001-X037

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 9211493

BMW E88 Convertible Roof Folding Top Control Module Unit 9211493

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7589971-9

Mini Cooper R55 R56 N12 1.6 120HP ECU Kit DME CAS3 + Key 7589971 Manual

€142.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A1715405045-1

Mercedes SLK R171 Central Gateway Module ECU Control Unit A1715405045

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 3428557

BMW Z4 E86 Alarm System Ultrasonic Roof Control Module 3428557

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7640015-7

BMW E81 E82 E88 N43 118i 143HP Engine ECU DME Kit CAS3 Key 7640015 Automatic

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06J903023G

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

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W8971029D

Audi A5 S5 RS5 B9 Sportsback Door Wiring Loom Front Driver's Side O/S 8W8971029D

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CVS-012-5

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

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DX23-F01590-AA

Jaguar XF X250 Fuse Relay Box Cover Panel Trim Lid Black DX23-F01590-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2711504733

Mercedes W204 Injection Electrical Wiring M271 Petrol Engine Cable A2711504733

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 281480007R

Smart A453 Renault Trafic MK3 Front Dashboard Tweeter Speaker 281480007R

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9W83-15K866-AA

Jaguar XF X250 PDC Park Assist Distance Control Unit Module ECU 9W83-15K866-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K8D2-14B227-AL

Land Rover Discovery Sport L550 Voltage Converter 48V-12V Unit K8D2-14B227-AL

€854.95

Free delivery: Nov 12 – 13

If paid before 14:00

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