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 A8 D4 Door Wiring Loom Harness Rear Left Right N/O/S 4H0971687BF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1679006912

Mercedes C118 W177 W247 Keyless Go Module ECU Entry Control Unit A1679006912

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A4A7C0

BMW G20 LCI Wiring Loom Harness Cable Front Left N/S 5A4A7C0

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6817762

Mini F54 F55 F56 F57 Head-Up Display HUD Dashboard Dash Screen 6817762

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971104Q

Audi A5 8T Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8383185

BMW X5 7 Series E38 E53 Control Unit Illuminated Door Handle 8383185

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6968650

BMW 3 Series E93 E93N LCI Aerial Antenna Amplifier FM/AM Right O/S 6968650

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729006008

Mercedes W204 W212 W176 Media Interface Control Unit Module A1729006008

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9065400041

Mercedes Sprinter W906 Battery Cable Negative Lead Wiring Harness A9065400041

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9390160

BMW X3 F25 LTE Compensator Phone System Holder Bracket Mount 9390160

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9T16-14B296-AA

Ford Transit Connect Yaw Sensor ESP Rotation Rate Control Unit 9T16-14B296-AA

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F1971693G

Audi A6 C6 Rear Door Wiring Harness Cable Loom Left Right N/O/S 4F1971693G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CC11-12A650-AC-1

Ford Transit Mk7 Engine Control ECU 100HP 2.2 Diesel DRFB CC11-12A650-AC Kit

€360.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971029AP

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8648846

BMW F39 F45 F48 LCI Mini Cooper F60 Negative Earth Ground Cable 8648846

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4KE035282G

Audi A4 B9 Telematics Bluetooth Control Module Unit ECU 4KE035282G

€560.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1648209485

Mercedes ML W164 Door Module Front Right O/S Control Unit Module A1648209485

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018JG-1

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

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018ME-2

Seat Exeo 3R 2.0 TDI CJCA 143HP Engine Control Unit ECU 03L906018ME Manual

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8N0959643A

Audi TT 8J Crash Impact Sensor Unit Air Module 8K0955557C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025427619

Mercedes-Benz SLS ML G C197 W164 W463 Relay Fuse 5-Pin Green Hella A0025427619

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0915343A

Volkswagen Polo Mk6 AW Battery Holder Cover Surround Mount 2Q0915343A

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. WLAS18881C

Ford Ranger Mk4 Engine Control Unit ECU 143HP 2.5 TDCI Diesel Manual WLAS18881C

€408.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401724

Mercedes W205 GLC X253 Centre Console Wiring Harness Cable Loom A2055401724

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005465402

Mercedes C117 W176 W246 Positive Battery Terminal Cover Cap Trim Red A0005465402

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937084AJ

Audi A3 8V Body Control Comfort Unit Module BCM Unit ECU 5Q0937084AJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH32-14632-AB

Range Rover Sport L320 Rear Door Wiring Loom Harness Right O/S AH32-14632-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1X43-14B345-AB

Jaguar X-Type X400 Impact Crash Sensor Front Left Right N/O/S 1X43-14B345-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. BH22-14632-CA

Land Rover Discovery 4 Door Wiring Loom Harness Rear Right O/S BH22-14632-CA

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9143233-1

BMW E81 E87 E88 E90 E91 E92 E93 Speaker Central Bass Left N/S 9143233

€23.95

Free delivery: Nov 12 – 13

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Part no. 4K0971227A

Audi A6 C8 4K Battery Positive Wiring Harness Voltage Converter 4K0971227A

€28.95

Free delivery: Nov 12 – 13

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Part no. A2709060026-1

Starter Motor Mercedes W176 W246 Engine Starter Unit 12V Denso A6459060300

€23.95

Free delivery: Nov 12 – 13

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Part no. A2469067100-1

Mercedes W176 W246 C117 Fuse Relay Box Unit Cables Wiring Loom A2469067100

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-14D401-BB

Range Rover L494 Jaguar XF X250 DAB Radio Control Unit Module CPLA-14F720-BN

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1847935

Ford Fiesta Mk7 Dashboard Display Multifunction Screen Monitor C1BT-18B955-CJ

€118.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5035225H

Porsche Cayenne 92A Anetenna Aerial Amplifier Module Left N/S 7P5035225H

€28.95

Free delivery: Nov 12 – 13

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Part no. H1BT-14B533-BE

Ford Focus Mk3 Fiesta Mk8 Kuga Mk2 Door Control Front Left N/S H1BT-14B533-BE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B610A6

BMW F70 F78 F74 Gran Coupé Interior Light Control Module Right O/S 5B610A6

€156.95

Free delivery: Nov 12 – 13

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Part no. 7649131-1

BMW F30 F31 320i N20 184HP ECU Control Unit Kit DDE 7649131 Key FEM Automatic

€417.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A7899061200

Mercedes C205 Control Unit Module A7899061200

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9380238

BMW F10 Body Gateway Control Module Unit 9380238

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2199490

Ford Transit Connect Mk2 Starter Earth Ground Wire Cable FV6T-14324-BCC

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3G5971104C

Volkswagen Passat B8 Rear Parking PDC Sensor Wiring Loom 3G5971104C

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A08530

Fuel Pump Control BMW G30 G12 Mini F60 Tank Function Module Unit ECU 5A08530

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LK52-14A073-AA

Range Rover Sport L494 Engine Fuse Box Control Unit LK52-14A073-AA

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1718200015

Mercedes SLK R171 Rear Window Heating Cable Loom Heat Wiring Harness A1718200015

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T8971029AP

Audi A5 S5 8T Door Wiring Loom Harness Cable Front Right O/S 8T8971029AP

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR161109

Land Rover Range Rover Velar L560 Front Camera IPMA SVC Unit Module LR161109

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6947216

BMW 3 Series E93 Convertible Rear Bumper FM Radio Aerial Antenna 6947216

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6960227

BMW E65 E66 Sensor Air Bag Front Left Door N/S Module Airbag 6960227

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1545446-2

Ford Kuga C394 Rear Tail Light Lamp Inner Right O/S Wire Cable 8V41-13A602-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006318

PDC Module Mercedes W205 W213 W247 Parking Assistant Parktronic Unit A0009006318

€99.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. L8B2-70718-AL

Land Rover Range Rover Evoque L551 Telematic Control Module Unit L8B2-70718-AL

€127.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 98161812103-1

Porsche Boxster 718 981 982 Convertible Roof Control Unit 98161812103

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LX6A-9D370-CB

VW Volkswagen Amarok Mk2 Fuel Injection Pump Control Unit Module LX6A-9D370-CB

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1BT18C815ZAP

Ford Focus ST Mk3 Radio CD Head Unit Module Radio AHU F1BT-18C815-ZAP

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DV61-8C607-AD-3

Ford Transit Connect Mk2 Radiator Fan Control Module Unit 940002906

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C906016AJ

Volkswagen Golf 5K CAXA 122HP Engine Control Unit ECU Kit 03C906016AJ Automatic

€146.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7928663-1

Mini F54 F55 F56 F57 BMW F15 F20 F30 F32 Antenna Receiver Control Unit 9319081

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9216286

BMW F20 F21 Socket Plug Wiring Loom Cable 9216286

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8617697

BMW F45 F46 X1 F48 X2 F39 Engine Wiring Loom Harness B48A20B 8617697

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6H52-18C847-CA

Land Rover Freelander 2 L359 Antenna Amplifier Unit Module 6H52-18C847-CA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HB3T-14301-MA

Ford Ranger Mk32.2 TDCI 4X4 GBVAJQJ Battery Negative Cable Wiring HB3T14301MA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9143986-2

BMW E81 E82 E87 E88 E90 E91 E92 E93 Central Bass Speaker Right O/S 9204786

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8971687T

Audi A7 4G8 Rear Door Wiring Harness Loom Wire Set Left Right N/O/S 4G8971687T

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0907311C

VW Touareg 7P 204HP 3.0 Diesel CJMA Engine Module ECU Unit 7P0907311C Automatic

€203.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048202275

Mercedes W204 W212 C218 Bluetooth Antenna Amplifier Wiring Cable A2048202275

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1X43-13A940-FBA

Jaguar XK8 X100 Security Sounder Link Lead 1X43-13A940-FBA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X2971030P

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2295873

BMW F30 F33 Rear PDC Sensors Wiring Loom Cable 2295873

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7811979

BMW F01 Gearbox Wiring Loom Harness Cable Electric Wire Automatic 7811979

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FV61-12A650-APA

Ford Transit Connect Mk2 1.5 TDCI Engine Control ECU FV61-12A650-APA Automatic

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0862335A

Audi A4 B8 Bluetooth Interface Module Control Unit ECU 8T0862335A

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L903024A

Volkswagen VW Crafter 2E Alternator Generator Diesel Engine 110A 03L903024A

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775401858

Mercedes W118 W177 W247 Starter Alternator Wiring Loom Harness Cable A1775401858

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. XUO000030

Range Rover L322 Audio Antenna Aerial Amplifier Control Module XUO000030

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6812242

BMW F45 F46 Door Wiring Harness Cable Front Left N/S 6812242

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2079012500

Air Module Mercedes C204 C207 Sensor Control Unit ECU A2079012500

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1331420500

Mercedes W176 C117 A45 CLA45 Engine Sound Generator Control Unit A1331420500

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 07K971082E

Audi RS3 8Y RSQ3 F3 Fuel Injectors Wiring Harness Cable 2.5 TFSI 07K971082E

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5959655E

VW Volkswagen Caddy Maxi 2k Airbag Control Unit Module ECU 2.0 Diesel 2K5959655E

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6821145

Mini Clubman F54 F55 Stereo Radio Head Unit Sat Nav CD Player 6821145

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 81A971693

Audi Q2 Rear Door Wiring Loom Harness Left Right N/O/S 81A971693

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045401434

Mercedes W204 OM642 Alternator Starter Wiring Harness Cable A2045401434

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02E911023J

Audi TT 8J Petrol Engine Starter Motor 2.0 TFSI BWA 02E911023J

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0907719C

Audi A3 8P Anti Theft Alarm System Control Module Unit ECU 1K0907719C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99161822301

Porsche 718 Boxster 982 Front Impact Crash Sensor Control Module 99161822301

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0941003A-2

Audi A1 8X Headlight Headlamp Plug Socket Cable Front Left N/S 8X0941003A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV6N-14C236-BB

Ford Focus Mk3 Rear Door Control Unit Module ECU Left Right N/O/S BV6N-14B532-BF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 221-736-00

Brabus W221 S320 CDI Chip Tuning Powerbox Module Wire Harness 221-736-00

€450.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2205400507

Mercedes W220 Door Wiring Harness Rear Right Left N/O/S Keyless Go A2205400507

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6930302-1

BMW E60 E61 E63 E64 Actuator Ventilation Motor Heater Right O/S 6930302

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02M911024Q

Volkswagen Golf VI Passat B6 Tiguan Starter Motor Diesel Engine 02M911024Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6949381

BMW E65 E66 Front Door Wiring Door Cable Harness Loom 6949381

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V4971029

Audi S3 8V Front Door Wiring Loom Harness Electric Wire Driver's Side 8V4971029

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH42-18C830-AA

Range Rover L322 6-Disc Magazine CD Changer Radio Unit AH42-18C830-AA

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1ET-3C221-ABE

Ford Focus Mk3 Power Steering Rack Wiring Harness Connector Loom F1ET-3C221-ABE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5F0907159B

Seat Leon Cupra Mk3 5F Body Impact Sound Control Module Unit 5F0907159B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9277894

BMW F20 Multimedia Sat Nav Heat Unit Module CD Player Radio 9277894

€417.95

Free delivery: Nov 12 – 13

If paid before 14:00

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