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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Valve Cable BMW F20 F21 F30 F31 Petrol N13 Valve Tronic Wiring Harness 7608801

€23.95

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BMW F10 F11 F30 F01 F02 LCI Air Control Module ECU Unit 9280186

€23.95

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BMW 5 6 Series E60 E61 E63 E64 Actuator Air Distribution Flap Matrix Heater

€23.95

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Part no. 8380407

BMW X5 Series E53 Power Distribution Fusebox Cover Fuse Box 8380407

€23.95

Free delivery: Nov 12 – 13

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Audi A3 8P Convertible Roof Control Module ECU 8P7959255

€28.95

Free delivery: Nov 12 – 13

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Part no. 3Q0907338

Audi S3 8V Front Headlight Lamp Range Control Module ECU 3Q0907338

€23.95

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Part no. 9171217

BMW E93 ECU Body Control Module H1 PL2 JBBFE Junction Box 9171217

€37.95

Free delivery: Nov 12 – 13

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Part no. 9241694

Wiring Harness BMW F10 F11 Front Bumper PDC Wiring Loom Cable 9241694

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2709060026

Starter Motor Mercedes W176 W246 Engine Starter Unit 12V Denso A2709060026

€28.95

Free delivery: Nov 12 – 13

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Part no. 02M911024S

VW Golf MK7 5G Audi A3 8V Engine Starter Motor Valeo 2.0 TDI Diesel 02M911024S

€28.95

Free delivery: Nov 12 – 13

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Part no. 6982652

BMW 1 Series E82 E88 Positive Battery Lead Cable Wire 61126982652 6982652

€23.95

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Part no. 6928050

BMW 7 Series E65 E66 E67 Battery Cable Wire Earth Ground Minus Negative L=260MM

€23.95

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Part no. 8X0959795C

Audi Q3 8U Door Control Unit Module Rear Left Right N/O/S 8X0959795C

€23.95

Free delivery: Nov 12 – 13

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Part no. 9204526

BMW E92 Xenon Footwell Light Module Control Unit ECU PL2 FRM II 9204526

€108.95

Free delivery: Nov 12 – 13

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Part no. 8682893

BMW F20 F30 LCI 120i 320i 330i B48 Engine Wiring Cable Loom Harness 8644504

€75.95

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Part no. 8K0959655L

Audi A4 B8 Air Module Control Unit ECU Crash Control 8K0959655L

€23.95

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Part no. A0015424623

Mercedes A207 W204 W212 Front Parking PDC Display Panel A0015424623

€23.95

Free delivery: Nov 12 – 13

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Part no. 6998485

Air Module BMW F45 X1 F48 Mini F54 F55 F56 Air Module Control Unit ECU 6998485

€89.95

Free delivery: Nov 12 – 13

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Part no. 4F0959793E

VW Volkswagen Tiguan 5N Front Right O/S Door ECU Module Control Unit 4F0959793E

€23.95

Free delivery: Nov 12 – 13

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Part no. 8K0907064CC

Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907064CC

€23.95

Free delivery: Nov 12 – 13

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Part no. 8513157

Battery Electric Cable BMW F45 F48 Mini F56 F60 Alternator Starter Motor 8513157

€23.95

Free delivery: Nov 12 – 13

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Part no. 7552697

Mini Cooper One Clubman R55 R56 R57 R59 R60 JCW Engine Starter Motor 7552697

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 55585024

Vauxhall Opel Insignia A 2.0 TDCI Engine Control Module 55585024 Manual

€28.95

Free delivery: Nov 12 – 13

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Part no. LR007521

Land Rover Discovery 4 L319 Glow Plug Wire Wiring Cable Left N/S 4R8Q-12A378-AF

€23.95

Free delivery: Nov 12 – 13

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Part no. A2025402373

Mercedes W169 W203 W204 W211 OBD Diagnostic Plug Cover A2025402373

€23.95

Free delivery: Nov 12 – 13

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Part no. 9341078

Head Unit BMW F20 F21 F30 Radio Professional CD Player Control Module 9341078

€99.95

Free delivery: Nov 12 – 13

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Part no. A2218708326

Mercedes W221 Rear View Backup Camera Control Unit Module A2218708326

€32.95

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Part no. AV6N-11000-GE

Ford Focus Mk3 Transit Connect Starter Motor Diesel Engine AV6N-11000-GE

€28.95

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Part no. 9267466

BMW F10 Body Control Module Junction Box V2 PL2 JBBFE III Lear ECU 9267466

€32.95

Free delivery: Nov 12 – 13

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Part no. A1648200485

Mercedes ML W164 Door Module Front Right O/S Control Unit ECU A1648200485

€23.95

Free delivery: Nov 12 – 13

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Part no. CV1T-14B531-AC

Ford B-Max Front Door Module Control Unit Driver's Side CV1T-14B531-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. 9166057

BMW E81 E87 E90 E91 Control Unit Air Module ECU NO CRASH DATA 9166057

€23.95

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Part no. 9244392

BMW F10 ECU Body Control Module V2 PL6 JBBFE III Junction Box 9244392

€23.95

Free delivery: Nov 12 – 13

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Part no. 7464750

Tailgate Smart Opener BMW F10 F11 X1 F48 X3 F25 Control Unit Module 7464750

€23.95

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Part no. A2465400082

Mercedes-Benz A-Class W176 Cover Equipment Electrical Fuse Box A2465400082

€23.95

Free delivery: Nov 12 – 13

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Part no. JPLA-15K603-AB

Land Rover Sport L494 Remote Keyless Entry Antenna Module JPLA-15K603-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. 7579136

BMW Mini Cooper S R56 Automatic Gearbox ECU Control Unit EGS Module 7579136

€47.95

Free delivery: Nov 12 – 13

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Part no. 9229878

BMW E91 LCI ECU Body Control Module Junction Box H2 9229878

€23.95

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Part no. 7346699

BMW 3 4 Series F30 F82 M4 Carrier Mount Holder Backrest Left N/S 7346699

€23.95

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Part no. 9362396

BMW F20 REM Rear Electronic Module Fuse Box Control Unit V3 9362396

€23.95

Free delivery: Nov 12 – 13

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Part no. 4G8959793E

Audi A6 C7 Front Door Control Module Unit ECU Driver's Side 4G8959793E

€23.95

Free delivery: Nov 12 – 13

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Part no. A1715451301-1

Mercedes SLK R171 Roadster Fuse Box Control Unit SAM Module Relay A1715451301

€232.95

Free delivery: Nov 12 – 13

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Part no. 7810860-1

BMW 3 Series E90 E91 E92 E93 LCI N47N Engine Alternator Starter Cable B 7810860

€23.95

Free delivery: Nov 12 – 13

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Part no. 4L0910441C

Audi Q7 4L Rear Reversing Camera Module View Control Unit ECU 4L0910441C

€94.95

Free delivery: Nov 12 – 13

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Part no. 3404171

BMW X3 E83 Steering Control Module Unit Servo SVT Servotronic 3404171

€23.95

Free delivery: Nov 12 – 13

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Part no. 7812502-1

BMW E81 E82 E87 LCI E88 N47S 123d Engine Control ECU Kit DDE 7812502 Manual

€142.95

Free delivery: Nov 12 – 13

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Part no. A2661503133

Engine Wiring Mercedes W169 W245 M266 Petrol Cable Loom Harness A2661503133

€37.95

Free delivery: Nov 12 – 13

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Part no. 8506438-1

BMW E81 E87 LCI E90 E91 120d 320d N47 177HP ECU KIT DDE 8506438 CAS 3 Key

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139003617

Telematics Module Mercedes W176 W207 W205 Bluetooth Control Unit A2139003617

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009002414

Module Fuel Pump Mercedes W205 C253 Control Module Unit A0009002414

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6965406

Hands Free Control BMW E81 E87 E90 Electronics Charging Module MULF 6965406

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7447895

Fuel Pump Module BMW F20 F21 F30 F31 N13 Petrol Control Unit 7447895

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8C1T14A073BG

Ford Transit MK7 Fuse Box Body Control Module ECU BCM Unit 8C1T14A073BG

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779001604

Mercedes W177 W247 Door Module Front Right Control Unit A1779001604

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009003313

Adblue Module Mercedes W205 W222 W253 Exhaust Gas Control Unit ECU A0009003313

€23.95

Free delivery: Nov 12 – 13

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Part no. 7789222

BMW 3 5 7 X3 X5 Series E46 E53 E60 E65 E83 Cable Alternator Starter

€23.95

Free delivery: Nov 12 – 13

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Part no. 4H0959651A

Audi A1 A6 A7 Impact Crash Control Sensor Module ECU 4H0959651A

€23.95

Free delivery: Nov 12 – 13

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Part no. A2229002710

Tuner Box Mercedes W207 W212 W218 Digital Audio Control Unit DAB ECE A2229002710

€23.95

Free delivery: Nov 12 – 13

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Part no. 2650917-1

Ford Transit Custom MK8 Engine Alternator Generator Unit Diesel KK3T-10300-BB

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6929148

BMW E63 E64 Front Bumper PDC Loom Cables Wiring Set 6929148

€23.95

Free delivery: Nov 12 – 13

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Part no. 9313618

BMW 3 Series F30 F31 F80 M3 Front Rear Right O/S Wiring Loom Harness Cables Set

€42.95

Free delivery: Nov 12 – 13

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Part no. 6809050

BMW F20 F30 Rear Electronic Module REM Fuse Box Control Unit V2 ECU 6809050

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q4959392E

Skoda Octavia 5E Front Door Module Control Unit ECU Passenger Side 5Q4959392E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049060105

Mercedes W204 SAM Control Unit Module Fuse Box Relay Rear A2049060105

€62.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7524843

BMW E81 E82 E83 E84 E85 E87 E90 Petrol Denso Starter Motor 7524843

€23.95

Free delivery: Nov 12 – 13

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Part no. 7534921

BMW 3 X3 Series E46 E83 Engine Electronics Complete Control Unit Box 7534921

€23.95

Free delivery: Nov 12 – 13

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Part no. 9231321-1

BMW X3 F25 X4 F26 Dashboard Monitor Onboard Central Display Screen 6,5" 9231321

€42.95

Free delivery: Nov 12 – 13

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Part no. 7600562

BMW Mini Cooper S R55 R56 Automatic Gearbox ECU Control Unit EGS Module 7600562

€47.95

Free delivery: Nov 12 – 13

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Part no. 5DV-008-290-00

Mercedes W211 Xenon Headlight Level Control Module 5DV 008 290-00

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9247474-1

BMW E93 LCI ECU Body Control Module H3 Junction Box PL2RR JBBFE IIIR 9247474

€42.95

Free delivery: Nov 12 – 13

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Part no. 9118931

BMW E60 E61 LCI Airbag ECU Control Unit Module 9118931

€23.95

Free delivery: Nov 12 – 13

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Part no. 8376506

BMW Mini Cooper One R50 Power Folding Wing Mirror Module ECU Control 8376506

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9291956

BMW 1 Series F20 F20N LCI Front Door Wiring Loom Harness Driver Side 9291956

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775401910

Mercedes W177 Door Wiring Rear Door Left N/S Module Harness Cables A1775401910

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H32-19C164-BA

Land Rover Range Rover Sport L320 Radio Sound Amplifier 5H32-19C164-BA XQK500095

€123.95

Free delivery: Nov 12 – 13

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Part no. 141951253B-3

Audi VW Volkswagen Seat Relay Number 53 Unit Module 4 Pins Set Of 2 141951253B

€23.95

Free delivery: Nov 12 – 13

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Part no. 4M0035456A

Audi A4 B9 Antenna Amplifier Aerial Control Module Unit 4M0035456A

€23.95

Free delivery: Nov 12 – 13

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Part no. 7811702-6

BMW E81 E82 E87 LCI E88 N47S 123d 204HP Engine Unit ECU DDE Manual 7811702

€85.95

Free delivery: Nov 12 – 13

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Part no. 5J0937019

Seat Ibiza Mk4 6J Fuse Box On Board Supply Control Unit 5J0937615C

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W0959593M

Audi A4 B9 A5 F5 Front Door Module Control Unit ECU Driver Side 8W0959593M

€23.95

Free delivery: Nov 12 – 13

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Part no. 9286789

BMW E88 ECU Body Control Module H4 Junction Box PL2RR JBBFE IIIR 9286789

€80.95

Free delivery: Nov 12 – 13

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Part no. A2139009406

Mercedes W213 Display Screen Information Navigation Dashboard A2139009406

€66.95

Free delivery: Nov 12 – 13

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Part no. 6887358

BMW F10 F11 EMF Module Parking Brake Unit Electric Control 6863800

€23.95

Free delivery: Nov 12 – 13

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Part no. 6992830

BMW F10 F20 F30 Mini F55 F56 KaFAS Camera Front Control Unit Module ECU 6992830

€32.95

Free delivery: Nov 12 – 13

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Part no. 4G0907637L

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

€37.95

Free delivery: Nov 12 – 13

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Part no. 8803368

Display Screen BMW F45 F46 Central Information Navigation Monitor 6,5" 8803368

€161.95

Free delivery: Nov 12 – 13

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Part no. 3412574

BMW X3 Series E83 Rear Left Right Door N/O/S Wiring Loom Cables 3412574

€23.95

Free delivery: Nov 12 – 13

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Part no. A2218200210

Mercedes W221 Seat Occupancy Mat Control Unit Sensor A2218200210

€32.95

Free delivery: Nov 12 – 13

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Part no. 8661071

BMW Mini Cooper F55 F56 F57 Integrated Supply Module Z11 8661071

€23.95

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Part no. A1729007600

Seat Module Mercedes W204 Front Right O/S Memory Control Unit A1729007600

€47.95

Free delivery: Nov 12 – 13

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Part no. 9132539

BMW 1 3 Series E81 E87 E90 E91 Hands-free Electronics Charging MULF2 9132539

€23.95

Free delivery: Nov 12 – 13

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Part no. 8U0959655D

Audi Q3 8U Air Module ECU Sensor Control Unit 8U0959655D

€47.95

Free delivery: Nov 12 – 13

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Part no. 9348411

BMW X3 F25 Hifi System Audio Sound Amplifier AMP Module Unit 9348411

€85.95

Free delivery: Nov 12 – 13

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Part no. 9168833

BMW E60 E60N E63 E63N Body Control Module ECU Control Unit 9168833

€23.95

Free delivery: Nov 12 – 13

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Part no. A2059008826

Mercedes C205 SAM Module Rear Comfort Control Unit ECU A2059008826

€28.95

Free delivery: Nov 12 – 13

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Part no. 8K0959795A

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

€23.95

Free delivery: Nov 12 – 13

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Part no. 6927548

BMW Z4 E85 Drive For Window Lifter Motor Front Right O/S 6927548 9116626

€28.95

Free delivery: Nov 12 – 13

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Part no. CC11-12B533-AB

Ford Transit Mk7 Custom Glow Plug Relay 2.2 TDCi Euro 5 CC11-12B533-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. 3Q0907338C

Audi VW Seat Skoda Headlight Aim Range Control Unit Module ECU Xenon 3Q0907338C

€23.95

Free delivery: Nov 12 – 13

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