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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Audi Q3 8U Door Loom Wiring Harness Cable Rear Left Right N/O/S 8U0971687J

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V4T-15K867-ABA

Ford Kuga Mk1 C394 Front PDC Parking Sensor Wiring Harness 8V4T-15K867-ABA

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6G9T-14B192-EA

Ford Fiesta Transit Relay 4-Pin Grey FoMoCo Unit 6G9T-14B192-EA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR073313

Land Rover Discovery Sport L550 Battery Wiring Harness Cable Lead FK72-14A280-AC

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1698201185

Mercedes W169 W245 Front Door Control Unit Module Left N/S A1698201185

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9313638

BMW F30 F31 F80 M3 Front Passenger Wiring Loom Harness Cables 9313638

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2205400382

Mercedes CL S Class C215 W220 Fuse Box Unit Front Right O/S Cover A2205400382

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6907520

BMW 5 X5 Series E39 E53 Dual Band Cable Compensator Hands Free Phone 6907520

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P6035209

Volkswagen Touareg 7P Radio Navi CD Player Head Unit Mount Bracket 7P6035209

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AG91-12A692-BB

Ford S-Max Mk1 Engine Control Module ECU Unit Bracket Mount AG91-12A692-BB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0959754K

Audi A4 B8 A5 8T A6 C7 A7 4G Remote Key Fob Module 4H0959754K

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 99760302205

Porsche Cayman 987C Boxster 987 911T Alternator Generator 150A 14V 99760302205

€232.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BJ32-15C670-AB

Range Rover Evoque L538 Sunroof Roof Blind Sun Blind Wire Harness BJ32-15C670-AB

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. JS7T-18D818-JB

Ford Mondeo Mk5 Radio Stereo Audio System Head Control Unit ECU JS7T-18D818-JB

€237.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8T0862335D

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9128573

BMW 1 Series E87 LCI E87N Cable Set PDC Front Wiring Loom 9128573

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L906019AG-1

Audi A6 C6 2.0 TDI CAHA 170HP Engine ECU Kit 03L906019AG Ignition + Key Manual

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9118749

BMW Z4 E85 E86 Air Module ECU Control Unit Module 9118749

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1695406805

Mercedes-Benz W245 Front Bumper Parking Sensor Parktronic Wiring Cable Harness

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139007436

Mercedes W177 W213 Gearbox Transmission Control Module Unit ECU A2139007436

€80.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8E0054635D

Audi A3 8P TT 8J PDC Parking Distance Control Unit Module 8E0054635D

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8792845

BMW X3 G01 Door Wire Loom Driver Side Front Right O/S 8792845

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7H22-13N850-AA

Land Rover Discovery 3 L319 Negative Earth Cable Wiring Harness 7H22-13N850-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6R0971537N

Seat Ibiza 6J Battery Ground Line Earth Negative Cable Wiring 6R0971537N

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8577625-4

BMW F20 F21 116d N47N 116HP Engine Control Unit DDE ECU Kit 8577625 Manual

€222.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KT1T18B955EB

Ford Transit Connect Mk2 II Dashboard Display Screen Panel KT1T-18B955-EB

€123.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. GK2T-6M091-AB

Ford Transit Mk8 2.0 Ecoblue Diesel Glow Plug Wiring Loom GK2T-6M091-AB

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A2479052404

Mercedes Sprinter W907 Remote Ignition Key Control Unit Fob A2479052404

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1698201285

Mercedes W169 W245 Front Door Control Unit Module Right O/S A1698201285

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. L9W3-14D550-BA

Land Rover Range Rover Velar L560 Inverter Converter Cooling Fan L9W3-14D550-BA

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2K5971206

VW Volkswagen Caddy Maxi 2k Radar Sensor Plug Loom Adapter Cable 2K5971206

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6953424-2

BMW Z4 Series 2 E85 E86 Positive Battery Cable Plus Pole Lead 6953424

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9124583-KAS

BMW E87 E90 Front Rear PDC Ultrasonic Parking Sensor Kaschmir Silver A72 9124583

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9218381-2

BMW F10 F20 F30 F34 Steering Wheel Module Electronics Control Unit 9209427

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8T8035570-1

Audi A4 B8 Radio Antenna Noise Signal Disturbance Suppressor 8T8035570

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4L0959655C

Audi Q7 4L Air Module Control Unit ECU Impact Sensor 4L0959655C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03C906016FR-1

Audi A1 8X 1.4 TFSI CAXA 122HP Engine Control ECU Kit 03C906016FR Manual

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1431172-2

Ford Transit Mk7 Engine Cooling Fan Radiator Module Control Unit 940002904

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. K8D2-15K622-AB

Land Rover Range Rover Evoque L551 Comfort Control Module ECU K8D2-15K622-AB

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9805075680

Citroen Relay Peugeot Boxer III Engine Glow Plugs Wiring Harness 9805075680

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. M8D2-14E159-AJ

Range Rover Evoque L551 Adaptive Drive Control Module ECU M8D2-14E159-AJ

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0025428919-1

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. MK83-14E159-AK

Range Rover Velar L560 Air Module Control Unit ECU MK83-14E159-AK

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. L8B2-14D619-AG

Land Rover Range Rover Velar L560 Door Module Rear Left N/S L8B2-14D619-AG

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2769004901

Mercedes A238 Convertible E450 M276.823 Engine ECU Unit A2769004901 Automatic

€474.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 3Q0959435D

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8583653

BMW F10 F30 F31 LCI N57N Wiring Harness Engine Glow Module 8583653

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2135400414

Mercedes W213 C238 Fuse Box Relay Control Unit Module A2135400414

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. GR3T-18C847-CA

Ford Mustang Mk6 Antenna Amplifier Control Unit Module Controller GR3T-18C847-CA

€47.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 9117801

Battery Bracket BMW X3 G01 X4 G02 Rear Holder Mount Carrier Support 9117801

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W9971104T

Audi A4 B9 Rear Bumper PDC Wiring Parking Sensor Loom Harness 8W9971104T

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055402992

Mercedes W205 Parking Sensor Wiring Rear Bumper PDC Loom Cable A2055402992

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8P0959655N

Audi A3 8P Side Air Module Control Unit ECU 8P0959655N

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9383182

BMW F20 F21 F22 F30 F31 F32 F36 Body Control Module Unit FEM LR01 9383182

€199.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2044401001

Parktronic Module Mercedes W204 PDC Parking Sensors Control Unit A2044401001

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 7641661-1

BMW F10 F20 F30 Wiring Harness Motor Sensorsystem Module Petrol N20

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6856747

BMW F10 F20 F30 Tow Bar Trailer Towing Control Module Unit AHM 4 6856747

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059006330

Mercedes W205 SAM Module Front Body Comfort Control Unit ECU A2059006330

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5K0907539

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2133401800

Mercedes W205 W213 High Voltage Battery Holder Mount Bracket Support A2133401800

€28.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 3C5035534F

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

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A4475402231

Mercedes W447 Sliding Door Wiring Loom Harness Right O/S A4475402231

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2075400440

Mercedes-Benz E-Class A207 Additional Battery Tray Holder Mounting Bracket

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7624617-1

BMW F20 F21 F30 F31 F32 Cable Alternator Starter Base B 7624617

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0907064GN

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

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9239323

BMW E81 E90 LCI Business System Car Infotaiment Computer CIC 9239323

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055459500

Mercedes C205 Audio Amplifier Module Bracket Mount Holder Support A2055459500

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1569007402

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5A374F9

BMW F40 Radio CD Player Head Unit Navigation Sat Nav CIC Alpine 5A374F9

€450.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. YDB500320

Range Rover L322 Windscreen Rain Sensor Module Control Unit YDB500320

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9675359580

Peugeot 3008 Bluetooth Module Multimedia Control Unit ECU 9675359580

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6949922

BMW 3 5 E46 E61 Touring Amplifier Soft Antenna Suppression Filter 6949922

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DPLA-14F026-AF

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

€108.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6982652

BMW 1 Series E82 E88 Positive Battery Lead Cable Wire 61126982652 6982652

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 9140942-BAR

BMW 1 3 Series E87 E90 E91 LCI Rear PDC Ultrasonic Parking Sensor Barbera Red

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4869810-4

BMW E82 E88 Taillight Tail Light Lamp Right Rear O/S Wire Harness Loom 7285642

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9847136

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 02M911024

Starter Motor Volkswagen VW Golf VI Passat B6 Tiguan Diesel Engine 02M911024

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9226881

BMW 1 Series F20 F20N F21 F21N LCI Radio Aerial Antenna Amplifier AM/FM 9226881

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9862369

BMW F40 F44 Electric Motor Fan Relay Bracket Carrier Mount Holder 9862369

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8611289

Mini Cooper S R56 JCW Coolant Thermostat Adapter Wiring Cable 8611289

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9303594

BMW Z4 E89 Anti Theft Alarm System Module Control Unit DWA 9303594

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8632692

BMW X5 F15 N20 Petrol Wiring Harness Transmission Gearbox Module Cable 8632692

€175.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8W0907063CG

Audi Q5 FY 2.0 TFSI DAXB Petrol Supply Body Control Module Unit 8W0907063CG

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9232063

BMW F30 Control Module Sensor 9232063

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 46860639

Peugeot Boxer Fuse Box Cover Lid Trim 46860639

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

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