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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Jaguar X-Type X400 Positive Battery Cable Engine Harness Petrol 1X43-14300-FAB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0907539

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2133401800

Mercedes W205 W213 High Voltage Battery Holder Mount Bracket Support A2133401800

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C5035534F

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2V-14A073-AA

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

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0937124H

Audi A3 8P VW Golf Mk4 Fuse Box Engine Compartment Relay Unit 1K0937124H

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 4H0907064GN

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

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8612582

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059003222

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GTC055R

Mercedes W207 W212 Display Screen Android Navigation Infotainment Unit GTC055R

€265.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055459500

Mercedes C205 Audio Amplifier Module Bracket Mount Holder Support A2055459500

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1719735

Ford Transit Mk7 Alternator Bracket Mount Support 2.4 TDCi Diesel 6C1Q-10K019-AD

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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Part no. HJ32-14301-AA

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6949229

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3R0919475

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K0971558B

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LU5T17D547

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7645962

BMW X5 F15 Trim Cover Tray High Voltage Battery 7645962

€75.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 6928350

BMW E87 LCI Roof Headliner Interior Lighting Wiring Loom Harness 6928350

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DH22-14B192-CA-1

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4869809-3

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9805075680

Citroen Relay Peugeot Boxer III Engine Glow Plugs Wiring Harness 9805075680

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4535400050

Smart Fortwo W453 Fuse Module Relay Box Module A4535400050

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6925903

BMW Z4 Series E85 Rear Bumper PDC Cables Wiring Loom Set 6925903

€37.95

Free delivery: Nov 12 – 13

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Part no. 4F0867749A

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

€23.95

Free delivery: Nov 12 – 13

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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: Nov 12 – 13

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Part no. 6C1T-14A076-A

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0959435D

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AM5T-18B955-BF

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

€56.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7G92-14240-ABG

Land Rover Freelander 2 Door Wiring Loom Harness Rear Right O/S 7G92-14240-ABG

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5814742

Global Telemetrics Vehicle GPS Tracker Reader Module Unit Device 05814742

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045407435

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

€23.95

Free delivery: Nov 12 – 13

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Part no. FK72-14D374-AK

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

€28.95

Free delivery: Nov 12 – 13

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Part no. A4479060400

Mercedes W447 Fuse Relay Box Module Control Unit A4479060400

€61.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8H22-18N378-AB

Land Rover Discovery 4 L319 Battery Tray Holder Trim Right O/S 8H22-18N378-AA

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8917302030

Toyota Corolla E12 Front Air Crash Impact Sensor Right 8917302030

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 46860639

Peugeot Boxer Fuse Box Cover Lid Trim 46860639

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K8D2-15607-AB

Land Range Rover Discovery Sport L550 Anti Theft Control Module K8D2-15607-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2133401900

Mercedes W205 W213 High Voltage Battery Holder Mount Bracket Support A2133401900

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8369504

BMW 5 E39 Saloon Radio Signal Antenna Amplifier Coaxial Cable 8369504

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK2V-14301-FB

Ford Transit Mk8 Negative Battery Cable Wire Terminal GK2V-14301-FB

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0951177-2

Audi A6 C7 A7 4G Roof Headliner Reading Lamp Inner Light Panel Grey 4G0951177

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8612583

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 9264976

BMW X5 E70 Seat Control Unit Module Front Left ECU 9264976

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729060105

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

€89.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. DPLA-7H417-BA

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9286219

BMW 3 Series F30 F31 Front Door Wiring Loom Cable Harness Driver's Side 9286219

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2054404136

Mercedes W205 Battery Lead Wiring Loom Cable Hybrid Cable Harness A2054404136

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9343766

BMW F30 F31 F32 Top Hifi Audio Sound Amplifier Harman Kardon 9343766

€569.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8482365

BMW G20 Installation Cable Wiring Loom 8482365

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9065450003-2

Mercedes Sprinter W906 Fuse Box Cover Trim Panel Lid Grey A6395450003

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 2745388

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

€47.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. AC1T9K499FGA-1

Ford Transit Mk7 Fuse Box Loom Wiring Harness Under Bonnet Unit AC1T-9K499-FGA

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0959792Q

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906022DB

Volkswagen Golf Variant AJ5 Engine ECU 140HP 2.0 Diesel CBDB 03L906022DB Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B971693-1

Porsche Macan 95B Rear Door Card Wiring Harness Left Right N/O/S 95B971693

€42.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. HPLA-14D618-BF

Jaguar Xf X260 Door Control Module Unit ECU Front Right O/S HPLA-14D618-BF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 821840H011

Toyota Aygo B1 Back Door Wiring Harness Wire Loom Cable Socket Plug 821840H011

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LK72-14D374-AC

Land Rover Discovery Sport L550 SRS Air Module Control Unit LK72-14D374-AC

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L906021FR

Audi A6 C7 Engine Control Module ECU 2.0 Diesel 190HP CNHA Automatic 04L906021FR

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1765405905

Mercedes W176 Center Console Wiring Loom Electrical Harness A1765405905

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AX23-14300-EA

Jaguar XF X250 Poitive Battery Battery Cable Wire Harness Loom AX23-14300-EA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CV6A-12B684-BC

Ford Fiesta Mk7 Engine Control Unit ECU 1.0 140HP Petrol Manual F1B1-12A650-AJB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906016DT-1

Audi A3 8P 2.0 TDI BKD 140HP Diesel Engine Control ECU Kit 03G906016DT Automatic

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BB-13405-AE-1

Ford Fiesta Mk7 Rear Outer Tail Light Lamp Wiring Adapter Left N/S C1BB-13405-AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8618444

BMW F30 LCI 330e B48X Cell Module Connector 8618444 61278618444

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2129010700

Mercedes W212 ECU Control Unit Sensor Module Airbag A2129010700

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A0009051816

Mercedes C118 W167 W177 W206 C247 Front Windscreen Camera Assist A0009051816

€70.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A1569007402

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2119820302

Mercedes W211 C219 Prefuse Fuse Distribution Box Electric Unit Front A2119820302

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 7PP907064JF

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

€151.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 5A5FD59

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 9229972

Module BMW Z4 E89 Convertible Cabrio ECU Control Unit Controller 9229972

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6959542A

Volkswagen Touareg 7P Steering Wheel Multifunction Control Module 7P6959542A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FX23-14369-CA

Jaguar XF X250 Front Bumper Parking Sensors Wiring Loom Harness FX23-14369-CA

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

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