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 Xf X260 Roof Wiring Harness Wire Loom Rearview Mirror Cable JX63-14334-AC

€99.95

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Part no. FPLA-5J99-EC

Jaguar XF X260 Diesel Lambda NOX Sensor Module Unit Cable Wire FPLA-5J299-EC

€23.95

Free delivery: Nov 12 – 13

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Part no. 3455305-1

2 x Mini R57 R58 R59 DWA Door Alarm System Module Control Unit Set 3455305

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7953082

Mini F66 F74 Negative Terminal Battery Cable Wire 7953082

€32.95

Free delivery: Nov 12 – 13

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Part no. 8513184-2

BMW X3 F25 20dX Diesel N47N 184HP Engine Module ECU Kit DDE 8513184 Automatic

€123.95

Free delivery: Nov 12 – 13

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Part no. 8578077-2

BMW F20 F30 125d 325d N47S1 Engine Control Unit ECU Kit DDE 8578077 + FEM + Key

€474.95

Free delivery: Nov 12 – 13

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Part no. YQE000380

Land Rover Freelander L314 Engine Fuse Box Electrical Relay Box Unit YQE000380

€23.95

Free delivery: Nov 12 – 13

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Part no. C1BT-14K138-DEF

Ford Fiesta Mk7 Front Door Wiring Loom Harness Left N/S C1BT-14K138-DEF

€23.95

Free delivery: Nov 12 – 13

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Part no. GJ32-13W029-DC-2

Range Rover Evoque L538 Front Headlight Wire Harness Right O/S GJ32-13W029-DC

€23.95

Free delivery: Nov 12 – 13

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Part no. DG9T-14B531-CF

Ford Mondeo MK5 Front Door Control Module ECU Right O/S DG9T-14B531-CF

€23.95

Free delivery: Nov 12 – 13

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Part no. 7570287

BMW Mini Cooper One R55 R56 R57 Earth Ground Battery Strap Cable 7570287

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W0971036D

Audi A4 B9 Front Door Wiring Harness Cable Loom Passenger Side 8W0971036D

€32.95

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Part no. 5346267

Ford Ranger Mk5 Battery Box Holder Mount Housing AB39-14A142-AA

€51.95

Free delivery: Nov 12 – 13

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Part no. 8663673

BMW F87 M2 370HP N55 Engine Control Unit Module ECU DME 8693361 Manual

€560.95

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Part no. 9148016-3

BMW E90 E91 E92 Professional CCC DVD Navigation Controller Plate 9148016

€66.95

Free delivery: Nov 12 – 13

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Part no. A1679008406

Mercedes W167 W177 W247 Ignition Engine Control Unit Module A1679008406

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079903805AD

Audi RS4 RS5 B8 Alternator Mounting Bracket Support 4.2 FSI CFSA 079903805AD

€23.95

Free delivery: Nov 12 – 13

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Part no. 30422-ELC-60057-BB-1

Mercedes Vito W639 Vito Taxi Penso Electronics Intercom 30422-ELC-60057-BB

€66.95

Free delivery: Nov 12 – 13

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Part no. 0C8927769DB

Porsche Cayenne 92A 958 Gearbox Control Module ECU Tiptronic 0C8927769DB

€56.95

Free delivery: Nov 12 – 13

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Part no. 4F0971679C

Audi A6 C6 Glove Box Storage Compartment Wiring Loom Harness Cable 4F0971679C

€37.95

Free delivery: Nov 12 – 13

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Part no. 6916228

Mini Cooper R50 R53 VICS Receiver Control Unit Module Japan 6916228

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075402950

Mercedes W204 Power Distribiuton Battery Fuse Box Control Unit ECU A2075402950

€23.95

Free delivery: Nov 12 – 13

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Part no. 2G6035700

Volkswagen Polo Mk6 AW Double USB C Charging Port Socket Connection 2G6035700

€28.95

Free delivery: Nov 12 – 13

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Part no. 9274347

BMW F32 Front Door Wiring Loom Cable Passenger Side 9274347

€23.95

Free delivery: Nov 12 – 13

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Part no. AG9T-14240-CED

Ford S-Max Door Harness Loom Wiring Wire Rear Left N/S AG9T-14240-CED

€23.95

Free delivery: Nov 12 – 13

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Part no. 1K0915181K

VW Volkswagen Caddy 2K Negative Cable Battery Terminal Wiring Loom 1K0915181K

€75.95

Free delivery: Nov 12 – 13

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Part no. BK3T-15K867-FC

Ford Transit Mk8 Front Bumper Fog Lights Wiring Loom Harness BK3T-15K867-FC

€99.95

Free delivery: Nov 12 – 13

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Part no. 9268438

BMW F10 F11 F01 F02 F03 Crash Impact Air Module Central Sensor Unit 9268438

€23.95

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Part no. 5K0945093T-2

Volkswagen Golf Gti 5k Rear Tail Light Lamp Inner Left N/S Loom Wire 5K0945093T

€23.95

Free delivery: Nov 12 – 13

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Part no. CC1T-14300-AA

Ford Transit Mk7 Positive Battery Cable Wiring 2.2 TDCi Diesel CC1T-14300-AA

€61.95

Free delivery: Nov 12 – 13

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Part no. LR074179

Land Rover Discovery L550 Rear Bumper PDC Wiring Harness LR074179 GK72-15B484-BC

€56.95

Free delivery: Nov 12 – 13

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Part no. A6429006301

Mercedes ML W166 X204 W221 Exhaust Gas Aftertreatment Control Module A6429006301

€170.95

Free delivery: Nov 12 – 13

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Part no. 06E971627F

Audi A6 C6 A8 D3 Injectors Wiring Harness Loom Cable Cyl 4-6 3.2 FSI 06E971627F

€23.95

Free delivery: Nov 12 – 13

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Part no. A2045402310

Mercedes W204 Front Door Wiring Loom Harness Wiring Left N/S A2045402310

€28.95

Free delivery: Nov 12 – 13

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Part no. A2215401101

Mercedes W221 Fuse Box Control Unit SAM Module Relay Controller A2215401101

€142.95

Free delivery: Nov 12 – 13

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Part no. 420971235

Audi R8 42 Battery Minus Negative Wiring Loom Harness Cable 420971235

€32.95

Free delivery: Nov 12 – 13

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Part no. DK62-10E889-AH

Range Rover Sport L494 Multifunction Display Screen Unit DK62-10E889-AH

€398.95

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Part no. 8V0907451

Audi A3 8V Sun Light Solar Sensor Control Detector 8V0907451

€23.95

Free delivery: Nov 12 – 13

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Part no. A2219004704

Mercedes-Benz S W221 Comand 6-Changer CD Radio Head Unit DVD Navi A2219004704

€807.95

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Part no. 93B6-18578-EA

Ford Transit TR SRS Crash Sensor Switch Unit 93B6-18578-EA

€23.95

Free delivery: Nov 12 – 13

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Part no. A2475400700

Mercedes W177 Rear Axle Wheel RPM Speed Left N/S Sensor Wire Harness A2475400700

€28.95

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Part no. 06J903023R

Audi Q3 8U Alternator Generator Unit 14V 140A 06J903023R

€56.95

Free delivery: Nov 12 – 13

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Part no. A2139007436

Mercedes W177 W213 Gearbox Transmission Control Module Unit ECU A2139007436

€80.95

Free delivery: Nov 12 – 13

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Part no. 7338703-1

BMW F30 F31 Front Bi-Xenon Headlight Headlamp Wiring Adapter Left N/S 7338703

€23.95

Free delivery: Nov 12 – 13

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Part no. 3455305-2

3 x Mini R57 R58 R59 DWA Door Alarm System Module Control Unit Set 3455305

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR034239-2

Range Rover L405 Tail Light Lamp Wire Harness Cable Plug Rear Left N/S LR034239

€23.95

Free delivery: Nov 12 – 13

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Part no. DH52-14240-BAC

Land Rover L359 Door Wiring Loom Harness Cable Rear Left N/S DH52-14240-BAC

€23.95

Free delivery: Nov 12 – 13

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Part no. A0009060502

Mercedes C253 Wiring Loom Plug Connector Black Harness Electric Wire A0009060502

€23.95

Free delivery: Nov 12 – 13

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Part no. FW93-19E110-AD

Land Rover Range Rover L405 Centre Console USB HDMI SIM Ports FW93-19E110-AD

€137.95

Free delivery: Nov 12 – 13

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Part no. 8507908

BMW F20 Gearbox Transmission Harness Wiring Loom Manual 8507908

€47.95

Free delivery: Nov 12 – 13

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Part no. 4N0907063NG

Audi A6 C7 Body Control Comfort Unit Module BCM Convenience Unit ECU 4N0907063NG

€232.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8577870

BMW X5 F15 Engine Control Module Unit ECU Diesel 8577870

€664.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14A005-BNK

Ford Fiesta Mk7 Fuse Box Control Module Unit C1BT-14A005-BNK

€51.95

Free delivery: Nov 12 – 13

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Part no. A2048200015

Telephone Cable Mercedes W204 C207 W212 Wiring Adapter Line A2048200015

€23.95

Free delivery: Nov 12 – 13

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Part no. DPLA-14C725-DB

Range Rover Evoque L551 Heated Seat Memory Control Module ECU DPLA-14C725-DB

€51.95

Free delivery: Nov 12 – 13

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Part no. 5B3A404

BMW X1 U11 High Voltage HV Cable Harness Wire Loom Charging Electronics 5B3A404

€474.95

Free delivery: Nov 12 – 13

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Part no. A6421501500-3

Mercedes W639 3.0CDI OM642.990 Engine Control Unit ECU Kit A6421501500 Automatic

€484.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135452040

Mercedes W213 Head Unit Bracket Control Unit Module Holder Mount A2135452040

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2214405406

Mercedes W221 Wiring Loom Cable Harness Door Rear Right A2214405406

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2189015200

Mercedes X218 Air Module Control Unit ECU Module A2189015200

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2265722-1

Ford Focus Mk3 Fiesta Mk7 Engine Alternator Generator 120A Lucas LRA03009

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0035420219-1

Relay Mercedes W639 W906 5-Pin Black 12V 20A A0035420219 Set X2

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. N1WT-14F514-PFD

VW Amarok Mk2 Front Door Wiring Harness Keyless Left Right N/O/S N1WT-14F514-PFD

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0980551

Audi Q7 4L Rear View Parking Reversing Camera Control Unit 4L0980551

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6F9035225

Seat Arona Antenna Amplifier Module AM/FM Diversity Aerial Booster 6F9035225

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 000051444K

Volkswagen Golf Mk5 1k Ipod Adapter Control Unit Box Module 000051444K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2117663506

Mercedes R171 W204 C209 W220 Ignition Key Remote Control Unit Fob A2117663506

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2215402062

Fuel Pump Module Mercedes ML W164 W204 Petrol Control Unit ECU A2215402062

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-19H440-AD

Jaguar XF X260 Remote Function Actuator Module Unit Panel HPLA-19H440-AD

€23.95

Free delivery: Nov 12 – 13

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Part no. LR028309

Range Rover Evoque L538 Rear Bumper PDC Wiring Harness Cable BJ32-15B484-AC

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3455306-2

4 x Mini R57 Cabrio Convertible DWA Door Alarm System Control Module Set 3455306

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2539064002-2

Mercedes C253 Rear Light Lamp Taillight Right O/S Harness Wire Loom A2539064002

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 05L907309-1

Audi A5 F5 2.0 TDI DEZE 163HP Engine ECU Kit BCM2 + Key 05L907309 Automatic

€474.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02Z911023H

Volkswagen VW Golf V 1.9 TDI Diesel Engine Starter Motor 02Z911023H

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9252549

BMW F12 Front Seat Control Unit Module Memory ECU 9252549

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0937503B

Audi A4 B9 A5 F5 A6 C8 Fuse Relay Box Power Distribution 8W0937503B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8519663-14

Mini Cooper D R56 LCI R60 N47N 112HP Diesel Engine Unit ECU DDE 8519663 Manual

€56.95

Free delivery: Nov 12 – 13

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Part no. 8387551

BMW 3 Series E46 Battery Positive Cable Fuse Box Base B 8387551

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W0971029CH

Audi A4 B9 Front Door Wiring Loom Harness Cable Loom Right O/S 8W0971029CH

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8606447

BMW F20 F21 LCI Wiring Harness Motor Sensor System Module N13 8606447

€37.95

Free delivery: Nov 12 – 13

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Part no. 03L903023K

Audi A3 8V A4 A5 B8 Alternator Generator Electrical Unit Diesel 03L903023K

€61.95

Free delivery: Nov 12 – 13

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Part no. A6385450319

Mercedes W639 W638 W906 Fuse Box Unit Holder Bracket Frame A6385450319

€23.95

Free delivery: Nov 12 – 13

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Part no. 6C1T14A067AB-1

Ford Transit Mk7 Fuse Box Relay With Bracket Holder 2.2 Diesel 6C1T-14C445-AB

€28.95

Free delivery: Nov 12 – 13

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BMW F15 Radio Audio Professional Player Head Unit Multimedia 9367650

€189.95

Free delivery: Nov 12 – 13

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Part no. A2128270006

Camera Module Mercedes W207 W212 Reversing Rear View Control Unit A2128270006

€37.95

Free delivery: Nov 12 – 13

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Part no. CS7T-19C128-AF

Ford Galaxy Mk3 S-Max Mondeo Mk4 Sat Nav Control Module Amplifier CS7T-19C128-AF

€47.95

Free delivery: Nov 12 – 13

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Part no. 5M5T-14B192-AA

Land Rover Jaguar Ford 4-Pin Multi Use Black Relay 20A 5M5T-14B192-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. 04L907309G

VW Scirocco Mk3 2.0 TDI CUWA 184HP Engine ECU Kit BCM Key 04L907309G Automatic

€208.95

Free delivery: Nov 12 – 13

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Part no. 04L907309R-12

VW Golf Gtd Engine Control Unit ECU CUNA 184HP 2.0 Diesel 04L907309R Manual KIT

€165.95

Free delivery: Nov 12 – 13

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Part no. 7435134-2

Tail Light MINI Cooper F55 F56 F57 Rear Lamp Right O/S Harness Loom Wire 7435134

€137.95

Free delivery: Nov 12 – 13

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Part no. 7C0971067D

Volkswagen Crafter TR Parking Assist Wiring Harness Adapter Cable 7C0971067D

€28.95

Free delivery: Nov 12 – 13

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Part no. 03L906018JR-1

Audi A4 B8 2.0 TDI CJCB Engine Control Unit Module ECU Kit 03L906018JR Manual

€284.95

Free delivery: Nov 12 – 13

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Part no. 7822015

BMW G20 G21 G26 330d 430d B57P Diesel Starter Cable Wiring B+ 7822015

€80.95

Free delivery: Nov 12 – 13

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Ford Kuga C482 Front Door Speaker Left Right N/O/S LJ6T-18808-AA

€23.95

Free delivery: Nov 12 – 13

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Mercedes E-Class S-Class W211 W220 Nokia Phone Control Unit Module ECU

€23.95

Free delivery: Nov 12 – 13

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Part no. 4K0907334

Audi A6 C8 A7 C8 Fuse Box Power Distribution Unit Module Control 4K0907334

€23.95

Free delivery: Nov 12 – 13

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VW Polo 9N MK4 Fabia II 1.4 TDI BMS Alternator Mount Support Bracket 038903143AG

€23.95

Free delivery: Nov 12 – 13

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Mini F60 BMW F48 SCR AdBlue Module Control Unit 9488417

€47.95

Free delivery: Nov 12 – 13

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Part no. DH22-14B192-DA

Land Rover Discovery Sport L550 Relay 5-Pin Unit 12V 40A Black DH22-14B192-DA

€23.95

Free delivery: Nov 12 – 13

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