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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Door Module Mercedes W177 W247 Rear Left Right N/O/S Control Unit A1779008511

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. LK62-9D370-BA

Range Rover Evoque L551 Fuel Pump Control Unit Module ECU LK62-9D370-BA

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. B67824252-1

Mercedes R171 iPod Interface Multimedia Music Connection Module Cable B67824252

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. JPLA-14D618-CB

Land Rover Evoque L551 Front Door Control Module ECU Driver Side JPLA-14D618-CB

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T8945095D-2

Audi A5 8T Tail Light Lamp Wiring Plug Socket Rear Left N/S 8T8945095D

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1T0035577AD

Volkswagen Touran 1T Aerial Antenna Amplifier Unit Module Left N/S 1T0035577AD

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7G91-3F880

Ford Mondeo Mk5 Steering Column Lock Control Unit Module 7G91-3F880-KA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5L0971161P

Skoda Yeti 5l Door Electric Wire Wiring Harness Loom Rear Right O/S 5L0971161P

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W0907064GB

Audi A4 B9 A5 F5 Central Body Control Module BCM Unit ECU 8W0907064GB

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. GK2T-18C394-BBC

Ford Transit Custom Mk8 Rear Door Wiring Loom Harness Left N/S GK2T-18C394-BBC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AV6T-14A067-BB

Ford C-Max Mk2 Fuse Box Battery Terminal Unit Module AV6T-14A067-BB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T0959793P

Audi A4 B8 A5 8T Door Control Unit Module Front Driver's Side 8T0959793P

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2218230050

Mercedes W221 Centre Console Telephone Keypad Control Unit Module A2218230050

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AV1T-15K600-CK

Ford Fiesta Mk7 Body Control Module BCM 1.25 Petrol 1713369 AV1T-15K600-CK

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9277818

Antenna Amplifier BMW F23 Cabrio FM Radio Booster Unit Module 9277818

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7482455

BMW G11 G20 G23 G26 F30 LCI F90 F96 Fuel Pump Control FPC Module Unit 7482455

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2459795

Ford Kuga Mk3 Camera Control Module ECU LJ6T-19H423-AA

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 46806763

Fiat Panda Mk2 Battery Tray Plastic Liner Housing Support 1.1 Petrol 46806763

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2549456

Ford Kuga C482 Anti Theft Alarm Siren 2.5 FHEV Petrol Hybrid LJ6T-19N217-AC

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5N0035342C

VW Volkswagen Touareg 7L Media Interface Module Control Unit Box 5N0035342C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8576341-6

BMW F20 F21 F30 F31 116d 316d 116HP N47N ECU Kit DDE 8576341 + Key + FEM Manual

€237.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9205477

BMW E82 E88 120i N43 Positive Battery Lead Cable Wiring Petrol 9205477

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009052200

Windscreen Camera Mercedes W209 W212 W221 Front Control Unit Module A0009052200

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6819652

Map Fuse Box BMW F15 F16 F85 F86 Grouping Diagram Card 6819652

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3455305-1

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8513184-2

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

€123.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. YQE000380

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. C1BT-14K138-DEF

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. GJ32-13W029-DC-2

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DG9T-14B531-CF

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7570287

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W0971036D

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

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5346267

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

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9148016-3

BMW E90 E91 E92 Professional CCC DVD Navigation Controller Plate 9148016

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1679008406

Mercedes W167 W177 W247 Ignition Engine Control Unit Module A1679008406

€170.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

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

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

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 0C8927769DB

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

€56.95

Free delivery: Sep 14 – 15

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Part no. 4F0971679C

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

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6916228

Mini Cooper R50 R53 VICS Receiver Control Unit Module Japan 6916228

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2075402950

Mercedes W204 Power Distribiuton Battery Fuse Box Control Unit ECU A2075402950

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AG9T-14240-CED

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0915181K

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

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BK3T-15K867-FC

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

€99.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9268438

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5K0945093T-2

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CC1T-14300-AA

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

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. LR074179

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

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6429006301

Mercedes ML W166 X204 W221 Exhaust Gas Aftertreatment Control Module A6429006301

€170.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1601540501

Smart Fortwo 450 Alternator Generator Denso 0.6 0.7 Petrol Engine A1601540501

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2215401101

Mercedes W221 Fuse Box Control Unit SAM Module Relay Controller A2215401101

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 420971235

Audi R8 42 Battery Minus Negative Wiring Loom Harness Cable 420971235

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DS7T-15K603-AA

Ford Focus Mk3 Keyless Entry Control Module Antenna Unit DS7T-15K603-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8V0907451

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2219004704

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

€807.95

Free delivery: Sep 14 – 15

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Part no. A2475400700

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

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2139007436

Mercedes W177 W213 Gearbox Transmission Control Module Unit ECU A2139007436

€80.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3455305-2

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

€23.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. DH52-14240-BAC

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8507908

BMW F20 Gearbox Transmission Harness Wiring Loom Manual 8507908

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4N0907063NG

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

€232.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8577870

BMW X5 F15 Engine Control Module Unit ECU Diesel 8577870

€664.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8582279-8

BMW F30 F32 F34 GT 320d 420d N47N 184HP Engine Module Unit ECU DDE 8582279

€51.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. A2048200015

Telephone Cable Mercedes W204 C207 W212 Wiring Adapter Line A2048200015

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1765406109

Wiring Harness Mercedes W176 A45 AMG Petrol M133 Low Temperature Pump Adapter

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DPLA-14C725-DB

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

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5B3A404

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

€474.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6421501500-3

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

€484.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2135452040

Mercedes W213 Head Unit Bracket Control Unit Module Holder Mount A2135452040

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2214405406

Mercedes W221 Wiring Loom Cable Harness Door Rear Right A2214405406

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. GJ32-14369-JA

Range Rover Evoque L538 Front Bumper PDC Sensors Wiring Harness GJ32-14369-JA

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2129009622

Mercedes W212 Fuse Box Relay Rear SAM Control Unit Module A2129009622

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2189015200

Mercedes X218 Air Module Control Unit ECU Module A2189015200

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2265722-1

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

€32.95

Free delivery: Sep 14 – 15

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Part no. A0035420219-1

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

€28.95

Free delivery: Sep 14 – 15

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: Sep 14 – 15

If paid before 14:00

Part no. MX63-19C279-AF

Land Rover Discovery Sport L550 Sat Nav Display Screen Unit MX63-19C279-AF

€555.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3T1T-14301-AC

Ford Transit Connect Negative Battery Terminal Cable Wiring 3T1T-14301-AC

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6F9035225

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 000051444K

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

€23.95

Free delivery: Sep 14 – 15

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Part no. A2215402062

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 7P6035670G

VW Volkswagen Touareg 7P CD Radio Stereo Head Unit Panel 7P6035670G

€522.95

Free delivery: Sep 14 – 15

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Part no. 7640015-3

BMW E81 E82 E88 N43 143HP Engine Control Unit ECU DME 7640015 Automatic

€61.95

Free delivery: Sep 14 – 15

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Part no. LR028309

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

€66.95

Free delivery: Sep 14 – 15

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Part no. 3455306-2

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 05L907309-1

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

€474.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 02Z911023H

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

€32.95

Free delivery: Sep 14 – 15

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Part no. 9252549

BMW F12 Front Seat Control Unit Module Memory ECU 9252549

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3Q0959655BK

VW Volkswagen Passat B8 Air Module Control Unit ECU Module 3Q0959655BK

€56.95

Free delivery: Sep 14 – 15

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Part no. 8W0937503B

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 5Q0937125A

Fuse Relay Box Volkswagen Audi Skoda Seat Engine Bay Supply Unit 5Q0937125A

€23.95

Free delivery: Sep 14 – 15

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Part no. 8519663-14

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

€56.95

Free delivery: Sep 14 – 15

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Part no. 8387551

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

€23.95

Free delivery: Sep 14 – 15

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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: Sep 14 – 15

If paid before 14:00

Part no. 8606447

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

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L903023K

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

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6385450319

Mercedes W639 W638 W906 Fuse Box Unit Holder Bracket Frame A6385450319

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

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