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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Ford Transit Mk7 Engine Compartment Fuse Box Lid Cover 6C1T-14A076-AA

€23.95

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Land Rover Range Rover Evoque L538 Parking Brake Control Module BJ32-2C496-AG

€47.95

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Brake Control Unit BMW F10 F11 X3 F25 Parking Brake Handbrake Module EMF 6850955

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Ford Ranger Mk4 Starter Motor 2.5 TDCi 4x4 Diesel 12V 1715411 4348654

€47.95

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BMW F30 F32 LCI 330d 430d N57N 258HP Control Unit ECU Kit DDE 8586540 FEM Key

€203.95

Free delivery: Nov 12 – 13

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Ford Transit Connect Centre Console Wiring Loom Harness Cable FT1T-15K857-AUE

€23.95

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Citroën C4 Grand Picasso Air Module Module Control Unit 9676399880

€47.95

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Part no. A1695400362

Mercedes W169 W245 Parking Sensor Control Module ECU Unit A1695400362

€23.95

Free delivery: Nov 12 – 13

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Part no. 8X23-10E889-AE

Jaguar Xf X250 Satelite Navigation Display Screen Control Unit 8X23-10E889-AE

€70.95

Free delivery: Nov 12 – 13

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Part no. 1940809

Ford B-Max Alternator Generator 14V 150A 1.0 GTDI EcoBoost CV6T-10300-BC

€37.95

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Part no. AH32-8822-AB

Land Rover Sport L320 Radio Player Bracket Mount Holder Trim AH32-8822-AB

€42.95

Free delivery: Nov 12 – 13

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Part no. BJ32-17509-AC

Range Rover Evoque L538 Control Unit Module BJ32-17509-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. 8515795

BMW E87 E90 F20 F30 Engine Starter Motor Actuator N47 N47N Diesel 8515795

€23.95

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Part no. 8X0971170

Audi A1 S1 8X A6 C8 Rear Upper Brake Light Wiring Harness Wiring Loom 8X0971170

€23.95

Free delivery: Nov 12 – 13

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Part no. H7A3-12C520-FDC

Jaguar XF X260 204DTD 180HP Engine Control Unit ECU Manual H7A3-1C520-FDC

€42.95

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Part no. 4F0919813E

Audi A4 B8 Chip Card Reader for Road Toll ETC Japan Module Unit 4F0919813E

€37.95

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Part no. C1BT-18B955-BC

Ford Fiesta Mk7 Multimedia Clock Display Screen Unit C1BT-18B955-BC

€23.95

Free delivery: Nov 12 – 13

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Part no. CH3214632AC

Land Rover Range Rover Sport L320 Door Wiring Loom Rear Right O/S CH32-14632-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. 03L906019AH

Audi A6 C6 Engine Control Unit ECU 2.0 Diesel 170HP Automatic 03L906019AH Set

€123.95

Free delivery: Nov 12 – 13

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Part no. 8K2907115AF

Audi A5 8T 2.0 TFSI CDNB 180HP Engine Control Unit ECU 8K2907115AF Manual

€94.95

Free delivery: Nov 12 – 13

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BMW F10 Central Gateway Module Control Unit Lear ZGW-02 4SK 9393660

€23.95

Free delivery: Nov 12 – 13

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Part no. 8E0907307C

Audi RS4 B7 4.2 Servotronic Relay Control Unit 8E0907307C

€70.95

Free delivery: Nov 12 – 13

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Part no. DG9T-9B243-BB

Ford Mondeo Mk5 Rear Body Wiring Harness Fuel Filler Flap Cable DG9T-9B243-BB

€23.95

Free delivery: Nov 12 – 13

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Part no. YTB500132

Land Rover Discovery 3 L319 Battery Cable Negative Wrinig Harness YTB500132

€23.95

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Antenna Amplifier Mercedes X117 W176 W205 Rear Aerial Module A2469064201

€23.95

Free delivery: Nov 12 – 13

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Part no. 6844126

On-Board Screen BMW F20 F30 LCI Information Display Touch Monitor 8,8" 6844126

€455.95

Free delivery: Nov 12 – 13

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Part no. 5A7A0C5

BMW U06 X1 U11 Fuel Injector Electrical Wiring Harness Cable B38 Petrol 5A7A0C5

€37.95

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Battery Cable BMW F90 M5 F91 M8 Wire Lead Positive Alternator Starter B+ 7856819

€28.95

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Skoda Octavia 5E Front Door Control Module Unit Passenger Side 5Q4959392C

€23.95

Free delivery: Nov 12 – 13

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Part no. 6856823-2

Mini R55 R56 LCI Steering Rack Electric Power Steering Wire Harness 6856823

€23.95

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Part no. 7P0937211A

Porsche Cayenne 92A 3.0 TDI Fuse Box Relay Control Module 7P0937211A

€23.95

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Vibe Powerbox 100.4M-V0 960W Mini D Audio Amplifier Module ECU

€237.95

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Part no. 03L907309R-1

Volkswagen Caddy Mk3 2.0 TDI CFHC 140HP Engine Control ECU 03L907309R Manual

€165.95

Free delivery: Nov 12 – 13

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Part no. 4F1971036A

Audi A6 C6 Front Passenger Door Wiring Left N/S Harness Loom Cable 4F1971036A

€23.95

Free delivery: Nov 12 – 13

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Part no. A0001502780

Mercedes W203 CL203 W204 M272 Petrol Ignition Coil Cable Connector A0001502780

€23.95

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Part no. 5WA959436P

Volkswagen Golf CD1 Keyless Go Module ECU Entry Control Unit 5WA959436P

€23.95

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Part no. 6940298-1

BMW E60 Air Module Control Unit Gateway Sensor B Pillar Right O/S 6940298

€23.95

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Part no. AV1T-14A584-CDD

Ford B-Max Door Loom Wiring Harness Cable Driver Side Front AV1T-14A584-CDD

€28.95

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Part no. A2124400414

Mercedes C207 W207 W212 Fuel Pump Module Diesel Control Unit ECU A2124400414

€23.95

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Part no. 8E0910115Q-1

Audi A4 B7 2.0 TFSI BWE 200HP Engine Control Unit ECU 8E0910115Q Automatic

€66.95

Free delivery: Nov 12 – 13

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Part no. DPLA-15C859-DL

Range Rover Evoque L538 PDC Parking Sensor Control Unit DPLA-15C859-DL

€32.95

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Part no. PU5T-14B531-CP

Ford Transit Custom Front Door Control Module Unit Driver Side PU5T-14B531-CP

€75.95

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Part no. 8T0862335F

Audi A4 B8 Bluetooth Multimedia Interface Control Module Unit ECU 8T0862335B

€23.95

Free delivery: Nov 12 – 13

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Part no. A1779069601

Mercedes W177 W247 Fuse Box Front Relay Engine Control Unit Module A1779069601

€42.95

Free delivery: Nov 12 – 13

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Part no. 9225014-1

BMW F23 F30 Distributor External Ignition Base Control Unit Module 9225014

€23.95

Free delivery: Nov 12 – 13

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Part no. 6J0035156-1

Seat Ibiza 6J Head Unit Mulitmedia Hazard Triangle Switch Panel Block 6J0035156

€23.95

Free delivery: Nov 12 – 13

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Part no. A2465401350

Fuse Box Mercedes W156 W176 W246 Front Relay Control Unit Module A2465401350

€23.95

Free delivery: Nov 12 – 13

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Part no. 8P0035225B

Audi A3 8P Aerial Amplifier Booster Bootlid Antenna Module Unit 8P0035225B

€23.95

Free delivery: Nov 12 – 13

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Part no. A2829003300-1

Mercedes W177 A180 282.914 136HP Petrol ECU Kit A2829003300 Key BCM Automatic

€246.95

Free delivery: Nov 12 – 13

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Part no. 4G0907589F

Audi A7 4G 3.0TDI CVUA 320HP Quattro Engine Control ECU Kit 4G0907589F Automatic

€650.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AM911023R

Audi A3 8V 1.4 TSI Petrol Starter Motor Engine Actuator Unit 0AM911023R

€28.95

Free delivery: Nov 12 – 13

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Part no. 9393671

BMW F12 LCI Junction Box Module Control Unit V12 9393671

€75.95

Free delivery: Nov 12 – 13

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Part no. 6905950

BMW X5 Series E53 Spoiler Dualband Antenna Amplifier Aerial 6905950

€23.95

Free delivery: Nov 12 – 13

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Part no. 2Q0980653C

Audi Q2 GA RSQ3 F3 Front Camera Module Lane Assist Control Unit 2Q0980653C

€56.95

Free delivery: Nov 12 – 13

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Part no. 6809475

Mini Cabrio F57 Door Harness Wire Wiring Loom Driver's Side 6809475 9389208

€47.95

Free delivery: Nov 12 – 13

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Part no. A2469009615

Mercedes W176 W246 PDC Parking Control Module A2469009615

€23.95

Free delivery: Nov 12 – 13

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Part no. 7835431

Carrier Air Conditioner BMW E60 M5 E61N E63 E64 M6 Compressor 7835431

€23.95

Free delivery: Nov 12 – 13

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Part no. 6990090

BMW E61 E63 E90 E92 F06 Mini R55 R56 Trap Circuit Antenna 6990090

€23.95

Free delivery: Nov 12 – 13

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Part no. 5F0945308K-2

Seat Leon Mk3 Cupra Rear Tail Light Lamp LED Wiring Inner Right O/S 5F0945308K

€23.95

Free delivery: Nov 12 – 13

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Part no. HPLA-14D620-BD

Range Rover Sport L494 Door Control Unit Module Rear Right O/SHPLA-14D620-BD

€23.95

Free delivery: Nov 12 – 13

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Part no. 079903805J

Audi A4 B6 B7 4.2 V8 FSI Alternator Bracket Mount Holder 079903805J

€23.95

Free delivery: Nov 12 – 13

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Part no. M8D2-14A104-BA

Land Rover Range Rover Evoque L551 Heater Control Wiring Harness M8D2-14A104-BA

€32.95

Free delivery: Nov 12 – 13

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Part no. 9247081

BMW X1 E84 Wiring Loom Harness Passenger Side 9247081

€23.95

Free delivery: Nov 12 – 13

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Part no. A9065460643

Mercedes Sprinter W906 Fuse Box Relay Bracket Monunt Holder A9065460643

€23.95

Free delivery: Nov 12 – 13

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BMW G20 G21 G80 G80 LCI Door Trim Panel Wiring Loom Harness Rear 8716572

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6927311

BMW E60 Front Seat Control Unit Module Controller ECU 6927311

€23.95

Free delivery: Nov 12 – 13

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Part no. 7520912-1

BMW E60 E61 E63 E64 LCI Lid Cover Panel Electronic Box 7520912

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8XA971085A

Audi A1 S1 8X Rear Bumper Parking Sensor Wiring Loom Harness Cable 8XA971085A

€89.95

Free delivery: Nov 12 – 13

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Part no. 8V4971036AG

Audi A3 8V Front Door Wiring Loom Harness Passenger Side N/S 8V4971036AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Mercedes W176 CLA C117 Dashboard Display Screen Sat Nav Multimedia A2189021606

€241.95

Free delivery: Nov 12 – 13

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Part no. 8584276-1

BMW F30 F31 320d Diesel N47N 163HP ECU Kit DDE 8584276 + Key + FEM 8584276

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6940763

BMW 7 Series E65 E66 E67 Ultra Sonic-Module 6940763

€23.95

Free delivery: Nov 12 – 13

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Part no. FK72-14D619-BE

Land Rover Discovery Sport L550 Rear Door Control Module Left N/S FK72-14D619-BE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8573260-1

BMW F20 F21 116d ed Diesel N47N 116HP Engine Control ECU DDE 8573260 Manual

€71.95

Free delivery: Nov 12 – 13

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Part no. 9374165

Mini Cabrio F57 Boot Trunk Wiring Harness Cable Loom 9374165

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9137725-1

BMW E63 E64 LCI Camera Lane Departure Warning Unit 9137725

€32.95

Free delivery: Nov 12 – 13

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Part no. 5F3907324

Seat Leon Cupra 5F Electronic Module Control Unit Retainer Holder 5F3907324

€23.95

Free delivery: Nov 12 – 13

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Part no. 2K5971557B

Volkswagen Caddy 2K Door Wiring Harness Cable Front Driver's Side 2K5971557B

€37.95

Free delivery: Nov 12 – 13

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Part no. A2218707786

Mercedes W221 Seat Module Control Unit Front Left Right N/O/S A2218707786

€37.95

Free delivery: Nov 12 – 13

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Part no. AV6N-11000-GE-1

Ford Focus Mk3 Transit Connect Starter Motor Diesel Engine HC Cargo 116316

€47.95

Free delivery: Nov 12 – 13

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Part no. 3V0907451C

Skoda Superb Mk3 Dashboard Sunlight Solar Sun Light Sensor Unit 3V0907451C

€23.95

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Part no. 03L903023L

Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023L

€47.95

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Part no. BM5T-18C815-PG

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€70.95

Free delivery: Nov 12 – 13

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Mini Cooper R56 LCI R61 N18 1.6 184HP Engine Control ECU DME 8610006 Automatic

€427.95

Free delivery: Nov 12 – 13

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Volvo V40 Mk3 Rear Parking Sensor Wiring Harness 850002405

€51.95

Free delivery: Nov 12 – 13

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Part no. A2215401633

Mercedes W221 Door Harness Cable Loom Wire Wiring Rear Left N/S A2215401633

€42.95

Free delivery: Nov 12 – 13

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BMW 5 Series E60 E61 Centre Console Switch Centre DTC PDC 6952477

€23.95

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Part no. 6809491

Mini Cabrio F57 Door Harness Wire Passenger Co-Driver's Side 9389225 6809491

€47.95

Free delivery: Nov 12 – 13

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Part no. AV4T-14301-AB

Ford Kuga C394 Negative Battery Wiring Loom Cable Wire Harness AV4T-14301-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. YQE500290

Range Rover L322 Engine Bay Fuse Relay Box Unit Module YQE500290

€23.95

Free delivery: Nov 12 – 13

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Part no. 5Q0959392E

Audi A3 8V Front Door Module Unit ECU Left N/S Passenger Side 5Q0959392E

€23.95

Free delivery: Nov 12 – 13

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Part no. 8T0971365H

Audi A5 8F Seat Cable Front Wiring Loom Harness Left Right N/O/S 8T0971365H

€23.95

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Part no. 4G5035225

Audi A6 C7 Aerial Roof Booster Antenna Amplifier AMP 4G5035225

€23.95

Free delivery: Nov 12 – 13

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Part no. 1517138

Ford Fiesta St Mk5 Starter Mottor Battery Cable Wire Loom Harness 6S6Y-14300-MF

€94.95

Free delivery: Nov 12 – 13

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Part no. A1729060005

Mercedes R172 Rear SAM Fuse Relay Box A1729060005

€51.95

Free delivery: Nov 12 – 13

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Part no. 8V5945096A-2

Audi A3 8V Saloon Rear Tail Light Wiring Harness Cable LED Right O/S 8V5945096A

€23.95

Free delivery: Nov 12 – 13

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Part no. 9210860

BMW X3 F25 Rear Fuse Box Power Distribution Control Unit Box 9210860

€23.95

Free delivery: Nov 12 – 13

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Part no. A2135452840

Mercedes W213 ECU Bracket Control Unit Module Holder Mount A2135452840

€23.95

Free delivery: Nov 12 – 13

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Part no. GU5T-14B192-GA

Ford Transit Mk8 Relay High Power 4-Pin Black FoMoCo GU5T-14B192-GA 4RA933714

€23.95

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