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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Mercedes ML W163 Fuse Relay Box ECU Cover Trim A1635400382

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9438239

BMW X4M F98 A/C Air Condition Climate Control Unit ECU 9439239

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6569000200-1

Mercedes W213 E400d OM656.929 Diesel Engine ECU Kit A6569000200 Automatic

€569.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AB39-15K601-AB

Ford Ranger Mk6 Button Remote Flip Key Fob AB39-15K601-AB

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W8035225

Audi A5 F5 Radio Aerial Antenna Amplifier Right Upper O/S 8W8035225

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1358032

Ford Focus Mk2 Engine Knock Sensor Control Unit 2.0 Petrol Engine 1S7A-12A699-BB

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 565035874

Skoda Karoq NU7 Radio Sat Nav Multimedia MMI Head Unit 565035874

€308.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A82646

Mini F65 F66 F67 Battery Housing Cover Trim Holder Mount Upper 5A82646

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0919603B

Audi S1 8X Stereo Display Media SAT NAV Screen MMI Multifunction 8X0919603B

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G0937517

Audi A6 C7 Fuse Battery Junction Box Fuse Distribution Terminal Centre 4G0937517

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-14F441-LD

Range Rover L405 BCM Module Body Control Unit ECU CPLA-14F441-LD

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1T0035194C

Volkswagen Golf Gti 1k Sat Nav Media Unit Radio System 1T0035194C

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9H22-10E889-AA

Land Rover Discovery 3 L319 Sat Nav Radio Display Screen Unit 9H22-10E889-AA

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8574752-1

BMW F25 20dX B47 190HP Engine Unit ECU Kit DDE 8574752 CAS4 Key Automatic

€379.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0907159C

Audi A1 8X Impact Sound Actuator Control Module 8X0907159C

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G0907637K

Audi A7 4G8 ESP Yaw Rate Module Control Unit Sensor ECU 4G0907637K

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GH22-10E889-AD

Land Rover Discovery 4 L319 Sat Nav Display Screen GH22-10E889-AD

€123.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9286217

BMW F31 F31 LCI Door Wiring Harness Loom Driver's Side 9286217

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YTB000080

Land Rover Freelander L314 Negative Minus Pole Battery Cable Wiring YTB000080

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YIC000070

Land Range Rover L322 Navigation Computer Control Module ECU Sat Nav YIC000070

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8F0971029AP

Audi A5 8F Door Wire Harness Cable Loom Wiring Front Driver's Side 8F0971029AP

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7G9T-14B533-EC

Land Rover Freelander 2 L359 Driver's Door Control ECU Module 7G9T-14B533-EC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8A2-15B484-BB

Range Rover Velar L560 Rear Bumper Wiring Harness Cable M8A2-15B484-BB

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6519007401-1

Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine ECU A6519007401 Key

€303.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2139001710

Keyless Go Mercedes W213 W222 Keyless Entry Control Unit Module A2139001710

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2056102702

Mercedes W205 Battery B Engine Compartment Terminal Point A2056102702

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7520019-1

Mini Cooper One R50 Petrol W10 W11 Engine Control Unit DME 7520019 Manual

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2469006816

Mercedes W176 W231 W246 Electric Parking Brake Control Unit Module A2469006816

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2819002707

Smart ForTwo C453 M281.920 71HP Engine Control Unit ECU 237105748R Automatic

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0959673

Audi A1 8X Windscreen Heating Control Switch 8X0959673

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9218702

Rain Sensor BMW F10 F11 Light Solar Fogging Control Unit 9218702

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 420035225R

Audi R8 42 Spyder Gen 1 Audio Antenna Amplifier Module Unit 420035225R

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-17D547-AC

Land Rover Range Rover L405 Windscreen Rain Sensor Module CPLA-17D547-AC

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0937401B-1

VW Volkswagen Touareg 7L Power Distribution Box Control Unit Plus 7L0937401B

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K5971029AE

Audi A6 C8 Door Wiring Cable Loom Harness Wire Front Driver's Side 4K5971029AE

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2135407044

Mercedes W213 Door Wiring Loom Harness Cable Front Passenger's Side A2135407044

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0945096-1

Audi A5 8T Rear Tail Light Lamp Wiring Cable Plug Right O/S Outer 8T0945096

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3WA959595A

Audi A3 RS3 8V Door Control Unit ECU Module Front Driver's Side 3WA959595A

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5GV051629E

Volkswagen Smart DataPlug Bluetooth OBD Smartphone Connect Dongle 5GV051629E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6401500734

Mercedes W169 W245 A200 B200 CDI OM640.941 140HP Engine Module ECU A6401500734

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8F0971035D

Audi A5 S5 8F Door Trim Panel Wiring Harness Loom Driver's Side 8F0971035D

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. C1BT-15K603-BA

Ford Fiesta Mk7 Aerial Antenna Amplifier Control Unit Module C1BT-15K603-BA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. HJ32-14463-CA

Range Rover Evoque L538 Battery Terminal Managment System HJ32-14463-CA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. HPLA-14A073-FC

Range Rover Sport L494 Fuse Box Control Unit HPLA-14A073-FC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03F906070GN-2

Audi A1 8X 1.2 TFSI CBZA 86HP Engine Control ECU Kit 03F906070GN Manual

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8P0862335M

Audi A4 B7 RS3 8P R8 42 TT 8J Bluetooth Interface Module Unit MMI 8P0862335M

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9306084

BMW F20 F21 F22 F30 F31 Front Seat Module Control Unit 9306084

€151.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6G9T-14A076-JC

Land Rover Freelander 2 L359 Fuse Box Cover Lid Panel Trim 6G9T-14A076-JC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4R83-9G768-AA

Range Rover Sport L320 Cruise Distance Control Module 4R83-9G768-AA

€127.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2129002401

Mercedes S212 Air Suspension Control Module A2129002401

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8674258-1

Mini F54 F55 F57 B48 136HP Engine Control ECU Kit DME 8674258 Automatic

€284.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8D2-14C361-AA

Land Rover Range Rover Evoque L551 Water Pump Harness Loom Wiring M8D2-14C361-AA

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. JPLA-14C239-BB

Range Rover Evoque L551 Climate Control Unit Module ECU JPLA-14C239-BB

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2469050201

Mercedes C117 X156 Antenna Amplifier Control Unit Module A2469050201

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1635450716

Mercedes W163 FBS Switch Keyless Entry Module Control Unit ECU A1635450716

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BJ32-19C164-BF

Land Rover Range Rover Evoque L538 Audio Amplifier Module Control BJ32-19C164-BF

€493.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BV6T-17D547-AD

Ford Transit Mk8 Front Window Windscreen Rain Light Sensor BV6T-17D547-AD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. ES73-13W030-HD-2

Ford Mondeo Mk5 Front Headlight Headlamp Left N/S Harness Loom ES73-13W030-HD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C0915336A

Audi A3 8P Battery Box Tray Covering Housing Trim Holder Bracket 3C0915336A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6819651

BMW X5 F15 Rear Fuse Box Distribution Relay Module Control ECU Unit 6819651

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A28FC6

Mini F65 F66 F67 Engine Control ECU Mount Bracket Support 5A28FC6

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8XA035193

Audi A1 8X Navigation Head Unit Radio Audio MMI CD Player Stereo 8XA035193

€569.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8582280-4

BMW F20 116d N47N 116HP Engine Control ECU DDE 8582280 Automatic Transmission

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K0035710

Audi A6 C8 Front A Pillar Column Dashboard Speaker Right O/S 4K0035710

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A207E7

BMW X3 G01 G20 G21 G30 G31 Audio Speaker Sound Amplifier Harman 5A207E7

€379.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6814609

BMW 1 3 5 Series F10 F20 F30 Bus Interface Connector Data Terminating 6814609

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4S41-12A650-BB

Ford Transit Connect 1.8 TDCI Engine Control Module ECU 4S41-12A650-BB Manual

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009058112

Mercedes C118 W177 W247 Negative Battery Terminal Cable Lead A0009058112

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5WA980653E

Audi A3 S3 8Y Front Camera FAS Lane Assistance Control Unit 5WA980653E

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 420919275-1

Rear Bumper PDC Audi A5 Sensor Parking Distance Control 420919275 1706091849

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5E3945208A-2

Skoda Octavia Mk4 NX Tail Light Side Panel Lamp Wiring Rear Right O/S 5E3945208A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8677250

Battery Starter Cable Mini Countryman F60 Cooper S B48 Positive Plus 8677250

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DV61-12A650-BKE

Ford Transit Connect 1.6 Duratorq 95HP Engine Module ECU DV61-12A650-BKE Manual

€322.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W5945069A-1

Audi A4 B9 Rear Tail Light Lamp Outer Wire Connector Plug Left N/S 8W5945069A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1775408312

Door Wiring Mercedes W177 W247 Driver Side Cable Harness Loom A1775408312

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1648205685

Air Module Mercedes ML W164 W251 SRS Control Unit ECU A1648205685

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. VUX500103

Land Rover Range Rover L322 Radio Tuner Receiver Control Module ECU VUX500103

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8583657

Wiring Harness BMW F20 E90 LCI Mini R56 LCI Engine Glow Plug Module 8583657

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3455306

Mini R57 Cabrio Convertible DWA Alarm System Relay ECU 3455306 65753455306

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 83A035842

Audi A1 GB Multimedia Sat Nav Radio Head Unit Controller 83A035842

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0915336B

Audi A3 8P Volkswagen Golf Mk5 Battery Side Cover Surround Housing 1K0915336B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8368231

BMW E46 Door Speaker Tweeter Front Left N/S 8368231

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6956672

BMW E63 E63N LCI Centre Console Switch Centre DTC PDC 6956672

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9302356

Battery Cable BMW F10 F11 X3 F25 Lead Negative IBS Wiring 9302356

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0971558K

VW Volkswagen Golf Gti 1k Door Wiring Loom Harness Front Right O/S 1K0971558K

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9231518

BMW F31 Antenna Aerial Diversity Trap Circuit 9231518

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2535403718

Mercedes X253 Rear Bumper Electrical Wiring Harness A2535403718

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7220891

BMW E91 LCI Control Unit Module Support Plate Bracket Carrier Holder 7220891

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1779002207

Mercedes W177 Rear Left Right N/O/S Door Control Module A1779002207

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0015424523

Parktronic Display Mercedes W207 W212 PDC System Parking Sensor A0015424523

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2129063001-1

Radio Head Unit Mercedes W212 Command Navi CD DVD Player Navigation A2129063001m

€161.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0937517-2

Audi A3 RS3 RS4 B7 8V Potential Power Distribution Junction Jump Point 1K0937517

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. KK3T-15604-FAE

Ford Transit Custom BCM Body Control Module Fuse Box ECU KK3T-15604-FAE

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2127341

Ford Mustang Mk6 Cable Harness Wire FR3T-13A840-CB

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CM5T-14B006-AA

Ford Focus Mk3 Air Module Crash Impact Sensor CM5T-14B006-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8512500-1

BMW E81 E82 E87 LCI E88 123d Engine N47S ECU Kit DDE 8512500 CAS3 + Key Manual

€317.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. C1BT-14A584-BDF

Ford Fiesta Mk7 Front Door Wiring Harness Cable Driver's Side C1BT-14A584-BDF

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BV6T-14E073-AAD

Ford Focus Mk3 Front Door Wiring Loom Harness Left N/S BV6T-14E073-AAD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-14Q073-AA-1

Range Rover L405 Fuse Box Control Module CPLA-14Q073-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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