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 G01 G11 G12 G20 G30 Battery Cell Module Connector Harness Loom Cable 8621019

€23.95

Free delivery: Sep 14 – 15

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Part no. 9847136

BMW X1 U11 High-Voltage Battery Terminal Strip Insulation Plate Support 9847136

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5H9971694S

VW Volkswagen Golf Mk8 Rear Door Cable Harness Wiring Loom Right O/S 5H9971694S

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T0862335D

Audi A4 B8 Bluetooth Multimedia Interface Control Module Unit ECU 8T0862335D

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8589168

Alternator Harness BMW X3 G01 X4 G02 30dX 40dX B57 Cable Base B+ Loom 8589168

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6F0035225

Seat Ibiza Mk5 KJ1 Antenna Amplifier Aerial Module Control Unit 6F0035225

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8E0971095S

Audi A4 B7 Front Bumper PDC Wiring Harness Loom Cable 8E0971095S

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5090031

Ford Kuga Mk3 Puma Air Temperature Sensor AUC Air Conditioning AU5T-12A647-AC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2229008811

Mercedes W205 C300h Heater Control Module Unit ECU A2229008811

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 0-727-43

DURITE 12V Smart Programmable Voltage Sensitive Split Charge Relay 0-727-43

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DS7T-19G317-BG

Ford Ranger Mk3 Power Inverter Converter Module Control Unit DS7T-19G317-BG

€56.95

Free delivery: Sep 14 – 15

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Part no. 5K0907539

VW Volkswagen Golf Mk6 5K Dashboard Light Sun Solar Sensor Unit 5K0907539

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2133401800

Mercedes W205 W213 High Voltage Battery Holder Mount Bracket Support A2133401800

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T0907468AH

Audi A4 Allroad Avant A5 S5 Q5 RS5 Diagnosis Inteface Gateway Module 8T0907468AH

€32.95

Free delivery: Sep 14 – 15

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Part no. 3C5035534F

Audi A3 8P Cabrio Antenna Amplifier Aerial Module Control Unit 3C5035534F

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BK2V-14A073-AA

Ford Transit Mk8 Fuse Box Relay Control Module 2.0 EcoBlue BK2V-14A073-AA

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8518268

BMW E90 E91 LCI N47N 318d Diesel Engine Control Unit DDE ECU Manual 8518268

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 06M907309D-1

Audi SQ5 FY 3.0 TFSI 354HP CWGD Quattro Engine ECU Kit Gateway + Key 06M907309D

€617.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4H0907064GN

Audi A6 C7 A7 4G Body Comfort Control Module Unit BCM 4H0907064GN

€75.95

Free delivery: Sep 14 – 15

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Part no. 8612582

BMW F45 Mini F60 HV Accumulator Battery Positive B+ Cable 8612582

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2059003222

Door Module Mercedes W205 W253 Control Unit Module Front Right O/S A2059003222

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. GTC055R

Mercedes W207 W212 Display Screen Android Navigation Infotainment Unit GTC055R

€265.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2055459500

Mercedes C205 Audio Amplifier Module Bracket Mount Holder Support A2055459500

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DPLA-19H440-AF

Land Rover Discovery 4 L319 Keyless Entry Control Module DPLA-19H440-AF

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HJ32-14301-AA

Land Range Rover Evoque L538 Negative Battery Cable Lead Wire D HJ32-14301-AA

€23.95

Free delivery: Sep 14 – 15

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Part no. DPLA-14F026-AF

Range Rover Vogue L405 Camera Control Unit Module ECU DPLA-14F026-AF

€108.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6949229

Mini R52 Cabrio Convertible DWA Rear Door Alarm System Module Unit 6949229

€23.95

Free delivery: Sep 14 – 15

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Part no. 3R0919475

Seat EXEO PDC Parking Sensor Distance AID Module Control Unit ECU 3R0919475

€23.95

Free delivery: Sep 14 – 15

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Part no. 4G0907160B

Audi A7 4G Exhaust Gas Module Control Unit ECU 4G0907160B

€118.95

Free delivery: Sep 14 – 15

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Part no. 2K0971558B

VW Volkswagen Caddy 2k Door Wire Harness Cable Front Right O/S 2K0971558B

€32.95

Free delivery: Sep 14 – 15

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Part no. LU5T17D547

Ford Transit Custom Mk8 Front Windscreen Rain Sensor Module LU5T-17D547

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7645962

BMW X5 F15 Trim Cover Tray High Voltage Battery 7645962

€75.95

Free delivery: Sep 11 – 15

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Part no. 6928350

BMW E87 LCI Roof Headliner Interior Lighting Wiring Loom Harness 6928350

€23.95

Free delivery: Sep 14 – 15

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Part no. DH22-14B192-CA-1

Range Rover Evoque L538 Relay 5-Pin Unit 12V 40A Grey DH22-14B192-CA

€23.95

Free delivery: Sep 14 – 15

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Part no. 4869809-3

BMW E82 E88 Rear Lamp Taillight Tail Light Left N/S Harness Wire Loom 7285641

€23.95

Free delivery: Sep 14 – 15

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Part no. 9805075680

Citroen Relay Peugeot Boxer III Engine Glow Plugs Wiring Harness 9805075680

€23.95

Free delivery: Sep 14 – 15

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Part no. A4535400050

Smart Fortwo W453 Fuse Module Relay Box Module A4535400050

€32.95

Free delivery: Sep 14 – 15

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Part no. A0025428919-1

Mercedes W176 W246 Relay 5-Pin Yellow Hella 12V SET X2 A0025428919

€23.95

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Part no. 4F0867749A

Audi A6 C6 Battery Hold Down Strap Support Securing Holder Belt 4F0867749A

€23.95

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Part no. 6926433

BMW 1 3 Series E87 E90 E91 Mini R56 R57 Seat Control Unit Module Heating 6926433

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6C1T-14A076-A

Ford Transit Fuse Box Cover Electrical Unit Housing Lid Trim Cap 6C1T-14A076-A

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1S0919275D-FSI

Audi Q3 8U PDC Parking Distance Control Sensor 1S0919275D Foil Silver - Z7G

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3Q0959435D

Audi TT FV Mk3 8S Keyless Module Control Unit Comfort Access 3Q0959435D

€23.95

Free delivery: Sep 14 – 15

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Part no. AM5T-18B955-BF

Ford Focus Mk3 Dashboard Multimedia Display Screen AM5T-18B955-BF

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8639595-9

BMW F30 320iX N20 163HP Engine Unit ECU Kit DME 8639595 FEM + Key Automatic

€474.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AM5T-14B342-AA

Ford Focus Mk3 Side Air Module Crash Impact Sensor Control Unit AM5T-14B342-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5814742

Global Telemetrics Vehicle GPS Tracker Reader Module Unit Device 05814742

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2045407435

Earth Ground Cable Mercedes W204 C207 W212 Line Strap Battery Lead A2045407435

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. FK72-14D374-AK

Land Rover Discovery Sport L550 Air Module Control Unit ECU FK72-14D374-AK

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A4479060400

Mercedes W447 Fuse Relay Box Module Control Unit A4479060400

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6934030

BMW 7 Series E65 E66 Wiring Loom Harness Right O/S Front Door 6934028

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9226880

BMW F20 F21 Radio Aerial Antenna Amplifier AM/FM Control Unit Module 9226880

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 46860639

Peugeot Boxer Fuse Box Cover Lid Trim 46860639

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2133401900

Mercedes W205 W213 High Voltage Battery Holder Mount Bracket Support A2133401900

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8369504

BMW 5 E39 Saloon Radio Signal Antenna Amplifier Coaxial Cable 8369504

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8612583

BMW F45 Mini F60 HV Accumulator Battery Positive B+ Cable Ground 8612583

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9286236

BMW F30 Door Wiring Front Passenger Door Loom Cables Harness F31 9286236

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8595865

Wiring BMW F32 F33 F36 LCI N57Z Engine Gearbox Module Wiring Harness 8595865

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1729060105

Mercedes SLK R172 Rear Fuse Box SAM Relay Control Unit Module A1729060105

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8579480-1

BMW F20 120d F30 320d F10 520d N47N 184HP Engine Control Unit DDE 8579480 Manual

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DPLA-7H417-BA

Range Rover L405 L494 Transfer Case Control Unit Module ECU Bosh DPLA-7H417-BA

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2054404136

Mercedes W205 Battery Lead Wiring Loom Cable Hybrid Cable Harness A2054404136

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W0971035BA

Audi A4 S4 RS4 8W A4 B9 Door Wire Harness Front Passenger Side 8W0971035BA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6M21-14B684-AA

Ford Mondeo Mk4 Front Seat Wiring Loom Harness Left Right N/O/S 6M21-14B684-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2134400200

Mercedes GLC 300e X253 Electric Drive Ground Earth Line Wire A2134400200

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8482365

BMW G20 Installation Cable Wiring Loom 8482365

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7542310

BMW Mini Cooper One R50 DME Petrol Engine Control Unit ECU Automatic 7542310

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2125420018-BLA

Mercedes W169 W204 W212 Parking Sensor PDC Front Black A2125420018

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6933968

BMW Z4 Series E85 Wiring Drivers Side Loom Front Door Cables Right O/S 6933968

€43.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2745388

Ford Fiesta Mk8 Puma Key Fob Remote Control K1BT-15K601-DE

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1371248

Ford Transit Mk7 Minus Negative Battery Mass Cable Wiring Loom 6C1T-14303-DA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 51834074-1

Fiat Panda Mk2 1.1 54HP 187A1000 Engine ECU Kit Key Ignition BCM 51834074 Manual

€123.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8605530

Engine Unit Bracket BMW G30 G31 G11 G15 ECU Module Holder Bracket Mount 8605530

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T0959792Q

Audi A5 8T Front Door Control Module Passenger Side 8T0959792Q

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6751504

Module Holder BMW X5 E53 Rear Tyre Pressure Control Module Mount Bracket 6751504

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1765405905

Mercedes W176 Center Console Wiring Loom Electrical Harness A1765405905

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8618444

BMW F30 LCI 330e B48X Cell Module Connector 8618444 61278618444

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 079903805E

Audi A4 B8 S5 8T 4.2 FSI Alternator Bracket Mount Holder 079903805E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. EJ32-14308-BC

Range Rover Evoque L538 Start Stop Power Supply Cables EJ32-14308-BC

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AV4T-14D202-BA

Ford Kuga Mk1 Bluetooth Module Wiring Harness Cable AV4T-14D202-BA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2129010700

Mercedes W212 ECU Control Unit Sensor Module Airbag A2129010700

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 05C907394D

Seat Arona Fr Kj7 Engine ECU 110HP 1.0 TFSI Manual Gearbox Petrol 05C907394D

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1Q0971120P

Volkswagen Eos Front Door Wiring Loom Harness Cable Passenger Side 1Q0971120P

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009051816

Mercedes C118 W167 W177 W206 C247 Front Windscreen Camera Assist A0009051816

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6G9N-17D547-AD

Ford Galaxy Mk2 Windscreen Front Window Rain Sensor Bosch 6G9N-17D547-AD

€23.95

Free delivery: Sep 14 – 15

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Part no. A1569007402

Mercedes W176 W246 Body Control Module Unit Fuse Box BCM ECU A1569007402

€23.95

Free delivery: Sep 14 – 15

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Part no. A2119820302

Mercedes W211 C219 Prefuse Fuse Distribution Box Electric Unit Front A2119820302

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 06E971627H

Audi A5 8T Injector Wiring Harness Cable Cylinders 1-3 3.2 FSI 07L971627F

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7PP907064JF

Porsche Cayenne S 92A Macan 95B Body Control Module Unit ECU 7PP907064JF

€151.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A67892

BMW X1 U11 Door Wiring Loom Harness Passenger Side N/S 193444-11

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. M8A2-14633-DB

Land Rover Range Rover Velar L560 Door Card Wiring Rear Left N/S M8A2-14633-DB

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A5FD59

Mini Cooper F65 F66 Antenna Amplifier Booster Control Unit Module 5A5FD59

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8577625-5

BMW F20 F21 B38 118i 136HP B38B15A Engine Control Unit ECU Kit FEM Key Automatic

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AV6N-15K607-AG

Ford Mondeo Mk4 Kuga Mk2 Interior Roof Alarm Motion Sensor AV6N-15K607-AG

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8J0971085D-1

Audi TT 8J Parking Sensor Wiring Harness Cable PDC Rear Bumper 8J0971085D

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9226901

Body Control Module BMW F01 ECU Junction Box PL6 JBBFE III 3 Lear 9226901

€56.95

Free delivery: Sep 14 – 15

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Part no. 9229972

Module BMW Z4 E89 Convertible Cabrio ECU Control Unit Controller 9229972

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A4539063900

Smart C453 Alternator Generator 90A A4539063900 281920

€123.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5G4971693T

Volkswagen VW Golf Mk7 Rear Door Wiring Harness Cable Loom Left N/S 5G4971693T

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

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