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 A4 B8 Door Harness Loom Cable Wiring Rear 8K0971688S

€23.95

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Part no. 9259425

BMW F30 F31 F80 M3 F82 M4 Positive Battery Cable Plus Pole 9259425

€23.95

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Mercedes Vito W447 Fuse Box Cover Trim Panel Lid Housing A4475400082

€42.95

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BMW 1 Series F20 Bluetooth Control Module Unit TCB ECE 9377150

€28.95

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Part no. 8V0035874C

Audi A3 8V Multimedia Radio Sat Nav CD Player Head Unit 8V0035874C

€142.95

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Roof Module BMW Z4 E85 Roadster Cabrio Convertible Folding Top 7199819

€23.95

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Part no. 7608801

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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Part no. 8K0907064C

Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907064C

€23.95

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Part no. 8E0054635D

Audi A3 8P TT 8J PDC Parking Distance Control Unit Module 8E0054635D

€70.95

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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. 4G0907697H

Audi TT FV LED Headlight Ballast Module Daytime Running Lights Unit 4G0907697H

€23.95

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Part no. A2709060026

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

€28.95

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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. 8X0959795C

Audi Q3 8U Door Module Rear Left Door Control Unit 8X0959795C

€23.95

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Part no. 9204526

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

€108.95

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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. 8P0035186S

Audi A3 8P Multimedia Concert Radio CD Player Head Unit 8P0035186S

€23.95

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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

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Part no. 4F0959793E

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

€23.95

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Part no. 8513157

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 4F0907279D

Audi Q7 4L Comfort Control Module Unit ECU 4F0907279D

€56.95

Free delivery: Sep 14 – 15

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Part no. 0AD927755BE

VW Volkswagen Touareg 7L Transfer Box Control Unit Module ECU 0AD927755BE

€23.95

Free delivery: Sep 14 – 15

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Part no. A2025402373

Mercedes W169 W203 W204 W211 OBD Diagnostic Plug Cover A2025402373

€23.95

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Part no. 9341078

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

€99.95

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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. 6809374

BMW F01 F07 F10 F11 F12 F25 CAS4 Module Control Unit Key Reading 6809374

€42.95

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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. A1695406805

Mercedes-Benz W245 Front Bumper Parking Sensor Parktronic Wiring Cable Harness

€51.95

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Part no. 8W0907217C

Audi A4 S4 B9 Front Windscreen Windshield Lane Assist Camera 8W0907217C

€66.95

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Part no. 9337807

Door Speaker BMW F15 F16 Front Rear Loudspeaker HiFi Audio Speaker 9337807

€23.95

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Part no. 9267466

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

€32.95

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Part no. 8K0919475AA

Audi A4 B8 PDC Assistance Parking Distance Control Module Unit ECU 8K0919475AA

€132.95

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Part no. A1648200485

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

€23.95

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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

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Part no. 7464750

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

€37.95

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Part no. A2465400082

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

€23.95

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Part no. 8516739-6

Mini SD R56 LCI R60 143HP N47N Engine ECU Kit DDE 8516739 + CAS3 + Key, Manual

€104.95

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Part no. 7579136

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

€47.95

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Part no. A0009063003

Mercedes W213 Alternator Generator 200A 14V A0009063003

€151.95

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BMW E91 LCI ECU Body Control Module Junction Box H2 9229878

€42.95

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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

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Part no. A1715451301-1

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

€232.95

Free delivery: Sep 14 – 15

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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: Sep 14 – 15

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Part no. 4L0910441C

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

€94.95

Free delivery: Sep 14 – 15

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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: Sep 14 – 15

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Part no. A2661503133

Engine Wiring Mercedes W169 W245 M266 Petrol Cable Loom Harness A2661503133

€47.95

Free delivery: Sep 14 – 15

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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: Sep 14 – 15

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Part no. 6927270

BMW 5 Series E60 Seat Control Unit Module Left Right N/O/S Temic 6927270

€23.95

Free delivery: Sep 14 – 15

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Part no. A2139003617

Telematics Module Mercedes W176 W207 W205 Bluetooth Control Unit A2139003617

€23.95

Free delivery: Sep 14 – 15

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Part no. 4G0907697J

Audi A7 4G A6 C7 Daytime Running Lights DRL LED Headlight Module Unit 4G0907697J

€37.95

Free delivery: Sep 14 – 15

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Part no. A0009002414

Module Fuel Pump Mercedes W205 C253 Control Module Unit A0009002414

€23.95

Free delivery: Sep 14 – 15

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Part no. 1K0959433BT

VW Golf 5 Body Control Comfort Unit Module BCM Convenience Unit ECU 1K0959433BT

€23.95

Free delivery: Sep 14 – 15

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Part no. 9286157

BMW X3 F25 Light Module Control Footwell Lightning ECU Unit FRM3 9286157

€28.95

Free delivery: Sep 14 – 15

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Part no. 6965406

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

€37.95

Free delivery: Sep 14 – 15

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Part no. 7447895

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 06K907425B

Audi S1 8X 2.0 TFSI CWZA 231HP Quattro Engine Control Unit ECU 06K907425C

€180.95

Free delivery: Sep 14 – 15

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Part no. A1779001604

Mercedes W177 W247 Door Module Front Right Control Unit A1779001604

€28.95

Free delivery: Sep 14 – 15

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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: Sep 14 – 15

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Part no. 4H0959651A

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

€23.95

Free delivery: Sep 14 – 15

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Part no. A2229002710

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

€23.95

Free delivery: Sep 14 – 15

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Part no. A2129003704

Parking Module Mercedes W207 W212 PDC Distance Control Unit Sensor A2129003704

€28.95

Free delivery: Sep 14 – 15

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Part no. A0051512101

Mercedes W168 W169 W245 Petrol Engine Starter Motor A0051512101

€28.95

Free delivery: Sep 14 – 15

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Part no. 9313618

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 5Q4959392E

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

€23.95

Free delivery: Sep 14 – 15

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Part no. A2049060105

Mercedes W204 SAM Control Unit Module Fuse Box Relay Rear A2049060105

€62.95

Free delivery: Sep 14 – 15

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Part no. 7524843

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 7600562

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

€85.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5DV-008-290-00

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 9118931

BMW E60 E61 LCI Airbag ECU Control Unit Module 9118931

€23.95

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Part no. 1K0915443A

VW Volkswagen Golf Mk5 Battery Lid Fuse Box Tray Housing Cover Trim 1K0915443A

€23.95

Free delivery: Sep 14 – 15

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Part no. A1775401910

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

€28.95

Free delivery: Sep 14 – 15

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Part no. 9158040

Mini R55 R56 R57 Flat Cable Wiring Wire CAS 9158040

€23.95

Free delivery: Sep 14 – 15

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Part no. 6961134

BMW 3 Series E90 Xenon Footwell Light Module Control Unit ECU PL2 FRMFA 6961134

€61.95

Free delivery: Sep 14 – 15

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Part no. A0999004101

Steering Lock Mercedes W176 W246 Control Unit Module VST A0999004101

€47.95

Free delivery: Sep 14 – 15

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Part no. 5J0937019

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

€23.95

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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: Sep 14 – 15

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Part no. 9286789

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

€80.95

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Part no. A2139009406

Mercedes W213 Display Screen Information Navigation Dashboard A2139009406

€66.95

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Part no. 6887358

BMW F10 F11 EMF Module Parking Brake Unit Electric Control 6863800

€23.95

Free delivery: Sep 14 – 15

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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: Sep 14 – 15

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Part no. 8803368

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

€161.95

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Part no. 3412574

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

€23.95

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Mercedes W221 Seat Occupancy Mat Control Unit Sensor A2218200210

€32.95

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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

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Part no. 03L903023A

Audi A3 8P Alternator Generator Diesel Engine Electrical Unit 03L903023A

€47.95

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

€85.95

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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

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Part no. A2059008826

Mercedes C205 SAM Module Rear Comfort Control Unit ECU A2059008826

€28.95

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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 14 – 15

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Part no. 6927548

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

€28.95

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Part no. 03L906018JG

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

€32.95

Free delivery: Sep 14 – 15

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Part no. 8C1T14303CA

Ford Transit Mk7 Negative Battery Terminal Cable Wiring 8C1T14303CA

€28.95

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Part no. A2465400508

Battery Cable Mercedes C117 W176 W246 Alternator Wiring Harness A2465400508

€23.95

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