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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Mazda 6 GJ Impact Crash Sensor Control Unit Module KD45-57KC0

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009002501

Mercedes C204 Video Radar Sensor Control Module Unit ECU A0009002501

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BK31-13405-AG-2

Ford Transit Mk8 Rear Tail Light Lamp Left N/S Harness Wire Loom BK31-13405-AG

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009004836

Mercedes W177 W247 Driving Dynamics Module Control Unit ECU A0009004836

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9116978

BMW X5 Series E70 Cable Loom Door Rear Left Right N/O/S Wiring Harness 9116978

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 95B919599F

Porsche Macan 95B On board Navigation Display Monitor Screen 95B919599F

€617.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7P6035552N

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Right O/S 7P6035552N

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7789225

BMW E65 E66 730d M57N Diesel Cable Starter-Base B+ 7789225

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0015426519

Mercedes C140 Brake Pump Relay Electrical Fuse Module Control Unit A0015426519

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4M5T-18808-FA

Ford Focus St-2 Mk2 Front Door Speaker 185MM Left Right N/O/S 4M5T-18808-FA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5WA971794R

VW Golf 8 1.5 eTSI HV Battery Positive Terminal Harness Cable Wiring 5WA971794R

€28.95

Free delivery: Sep 15 – 16

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Part no. 02M911024B

Volkswagen VW Golf Mk7 VII Passat B8 Starter Motor Diesel Engine 02M911024B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009007607

Mercedes-Benz E-Class W207 W212 Front Windscreen Windshield Lane Assist Camera

€23.95

Free delivery: Sep 15 – 16

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Part no. 7L6919473D

Porsche Cayenne 955 9PA Rear PDC Parking Sensor Indicator Display 7L6919473D

€23.95

Free delivery: Sep 15 – 16

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Part no. 9393780

BMW F45 F46 Mini F55 F56 F57 KaFAS Camera Front Lane Assist ECU Module 9393780

€23.95

Free delivery: Sep 15 – 16

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Part no. 8K0971035AS

Audi RS4 B8 Door Wiring Harness Cable Loom Front Left N/S 8K0971035AS

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2479004505-1

Mercedes Vito W447 Sprinter W907 W910 Telematics Module Control Unit A2479004505

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8U0971035AL

Audi Q3 8U Door Loom Wiring Harness Cable Front Right O/S 8U0971035AL

€23.95

Free delivery: Sep 15 – 16

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Part no. 8H1971035CR

Audi A4 S Line Door Wiring Harness Cable Front Passenger 8H1971035CR 8H1971035CS

€51.95

Free delivery: Sep 15 – 16

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Part no. A2661538979-1

Mercedes W169 A150 W245 B150 Engine Control ECU Kit A2661538979 + Key Automatic

€265.95

Free delivery: Sep 15 – 16

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Part no. DWN500032

Range Rover Sport L320 Battery Box Housing Cover Trim Top Panel DWN500032

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0959392E

Audi A4 B9 Front Door Control Module ECU Passenger Side 8W0959392E

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F0919603

Audi A6 C6 Display Screen Multimedia Navigation Dashboard Unit 4F0919603

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9383681

Mini F55 Fuse Box Front Body Control Module ECU BCM Unit 13275881

€123.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FW93-19C098-AB

Land Range Rover Sport L494 DAB Combiner Antenna Amplifier Module FW93-19C098-AB

€23.95

Free delivery: Sep 15 – 16

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Part no. FW93-11B608-AD

Range Rover Sport L494 Multimedia Radio CD Player Head Unit FW93-11B608-AD

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DK52-14F238-AC

Range Rover L405 Rear Parking Sensor Wiring Loom Cable Blind Spot DK52-14F238-AC

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 30422-ELC-60020-AA

Mercedes Vito W639 Control Unit ECU Taxi Penso EL Inverter 30422-ELC-60020-AA

€70.95

Free delivery: Sep 15 – 16

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Part no. A2059003913

Mercedes W205 Relay Module Body Control Module Unit SAM BCM A2059003913

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. M8A2-14A076-CB

Range Rover Velar L560 Fuse Box Unit Upper Cover Cap Trim M8A2-14A076-CB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8R0971687H

Audi Q5 8R Rear Door Wiring Loom Harness Rear Right O/S 8R0971687H

€28.95

Free delivery: Sep 15 – 16

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Part no. 8T0035223P

Audi A4 S4 8T A5 S5 8T Stereo Sound System Amplifier Module Unit ECU 8T0035223P

€80.95

Free delivery: Sep 15 – 16

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Part no. 1K0915325B

Audi A3 8P Q3 8U Battery Tray Housing Holder Bracket Mount 1K0915325B

€23.95

Free delivery: Sep 15 – 16

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Part no. 6F0971162J

Seat Ibiza Mk5 Fr Rear Door Wiring Loom Harness Wire Right O/S 6F0971162J

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1698208689

Mercedes W169 W245 Amplifier Antenna Sensor Control Unit Module A1698208689

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AM2T-18812-YB

Ford S-Max Navigation Radio Antenna Wiring Harness Cable AM2T-18812-YB

€32.95

Free delivery: Sep 15 – 16

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Part no. YFB100500LNF

Land Rover Discovery 2 L318 Digital Dash Clock LCD YFB100500LNF

€32.95

Free delivery: Sep 15 – 16

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Part no. A2465402610

Mercedes-Benz A B W176 W246 160 180 CDI Alternator Cable Loom Wire A2465402610

€23.95

Free delivery: Sep 15 – 16

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Part no. 06E911021D

Audi S5 8T A6 C7 Engine Starter Motor 3.0 TFSI Petrol CGWC 06E911021D

€42.95

Free delivery: Sep 15 – 16

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Part no. 3403145

BMW F21 F22 F23 X3 E83 Plug Housing Box Cover Cable Mounting 3403145

€23.95

Free delivery: Sep 15 – 16

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Part no. 5NA980611A

Volkswagen Golf 8 CD1 Wireless Phone Charging Center Console Module 5NA980611A

€37.95

Free delivery: Sep 15 – 16

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Part no. E1BT14K012DFD

Ford Fiesta Mk7 Engine Fuse Box Control Unit Module E1BT-14K012-DFD

€32.95

Free delivery: Sep 15 – 16

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Part no. AH42-00082-BA

Land Rover Range Rover L322 Engine Compartment Fuse Box Cover AH42-00082-BA

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. W639 Taxi Modules

Mercedes Vito W639 Control Unit Set Taxi Rear Wheel Steering Intercom Module

€332.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4L0959655

Audi Q7 4L Air Module SRS Control Module ECU 4L0959655

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7L0959772

VW Volkswagen Golf Mk5 Phaeton 3D Heated Seat Control Module Unit 7L0959772

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. P3143-9W3

Head Unit GPS Navigation Display Screen Android Auto CarPlay 9" P3143-9W3

€170.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9653805580

Peugeot 308 1.6 HDI Diesel Glow Plug Wiring Loom Cable Wiring 9653805580

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8577834

BMW F30 X3 F25 N57N 330d 30dX 258HP Engine Control Unit ECU 8577834 Automatic

€156.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. JK72-14A076-AA

Land Rover Discovery Sport L550 Fuse Box Cover Cap JK72-14A076-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9354068

BMW F45 F46 Door Interior Lighting Wiring Harness Cable Front Right O/S 9354068

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0971029B

Audi A4 B8 Door Wiring Harness Loom Cable Front Driver's Side 8K0971029B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8U0971029AF

Audi Q3 8U Front Door Wiring Loom Harness Cable Driver's Side 8U0971029AF

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2048709289

Mercedes W204 Right O/S Antenna Amplifier Filter Module A2048709289

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FS7T-18D816-BA

Ford Mondeo MK5 Aerial Antenna Amplifier Module Unit FS7T-18D816-BA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1K0857925D

Volkswagen Golf Mk5 iPod Dock Storage Sleeve 1K0857925D

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W6971030BF

Audi A5 F5 Front Door Wiring Harness Cable Passenger Side 8W6971030BF

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0005406050

Mercedes ML W164 W169 W205 W212 Fuse Box Relay Control Unit Module A0005406050

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6864924

BMW F10 Active Hybrid SRS Air Module Control Module Unit 6864924

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GJ32-14F681-AD

Range Rover Evoque L538 Gateway Control Module ECU GJ32-14F681-AD

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6958525

BMW X5 X6 E60 E61 E70 E71 F07 F10 F11 Seat Adjustment Switch Left N/S 6958525

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8514032

BMW X3 F25 X4 F26 Diesel B47 Alternator Starter Wiring Holder Cover 8514032

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G8959792J

Audi A7 4G8 Door Control Module Front Passenger Side 4G8959792J

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1665400841

Ground Line Mercedes ML W166 Battery Earth Negative Cable Wire A1665400841

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FK72-14D619-BD

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

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7591981

BMW F87 N55 Engine Bay Wiring Loom Harness Loom Cable Engine Gearbox 7591981

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8P0971679H

Audi A3 8P Dashboard Panel Box Light Wiring Harness Cable 8P0971679H

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7552638

BMW Z4 Series E85 N52 Roadster Earth Cable Battery 7552638

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1K0915335C

Volkswagen VW Golf Mk5 Battery Tray Side Cover Panel Holder 1K0915335C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3C8971120CC

Volkswagen Passat CC Front Door Wiring Harness Loom Cable Right O/S 3C8971120CC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F5035225D

Audi A6 C6 Aerial Antenna Amplifier Right O/S FM Booster Unit 4F5035225D

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1679009330

Mercedes C118 W167 W177 W243 W247 Ignition Control Module Unit ECU A1679009330

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9137725

BMW E63 E64 LCI Camera Lane Departure Warning 9137725

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. H1BT-19A067-AA

Ford Fiesta Mk8 Rear Boot Subwoofer Speaker Bang & Olufsen H1BT-19A067-AA

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. C1BT-14A005-DRD

Ford Fiesta Mk6 Fuse Box Relay Control Module 1.0T C1BT-14A005-DRD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3M5T-18808-EE

Ford Focus St-2 Mk2 Door Tweeter Speaker Front Left Right N/O/S 3M5T-18808-EE

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1K0035186AP

Volkswagen Golf Mk6 Passat B7 Stereo Radio CD Player Head Unit 1K0035186AP

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4K0907594AC

Audi S5 F5 VW Passat B8 Tiguan AD1 Sunroof Control Module ECU Unit 4K0907594AC

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DT11-13W030-BC-2

Ford Transit Connect MK2 Headlight Front Left N/S Harness Loom DT11-13W030-BC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8647296

BMW F30 LCI High-Voltage Battery Cover Support Housing Mount 8647296

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V7035225B

Audi A3 8V Antenna Amplifier Rear Right O/S 8V7035225B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9354069

BMW F45 F46 Door Interior Lighting Wiring Harness Cable Front Left N/S 9354069

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1715405045

Mercedes SLK R171 Central Gateway Module ECU Control Unit A1715405045

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0915181G

Volkswagen VW Golf Mk7 Negative Battery Terminal Cable Wiring 5Q0915181G

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2139065706

Mercedes W205 W213 Front Engine Compatment Fuse Relay Box Module A2139065706

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. CK52-14A067-BB

Land Rover Range Rover L405 Fuse Relay Box CK52-14A067-BB

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HB3T-14301-PA

Ford Ranger Wildtrack Mk6 Battery Negative Cable Wiring 3.2 TDCI HB3T-14301-PA

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0018275101

Mercedes W164 Tyre Pressure Sensor Rear Right Left Antenna Module A0018275101

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. LR001303

Land Rover Freelander L359 Glow Plug Wiring Loom Harness Cable Diesel 9661631680

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G8971085DP

AUDI A6 C7 A7 FY Sensor Harness Installation PDC Radar 4G8971085DP

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G8971687AT

Audi A7 4G Rear Door Wiring Harness Cable Left Right N/O/S 4G8971687AT

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9259999

BMW F30 Door Wiring Loom Harness Cable Front Passenger's Side N/S 9259999

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8577862-1

BMW X5 F15 40dX N57 313HP Engine Control Module ECU DDE Kit 8577862 FEM Key

€522.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5QA919283C

Audi A3 Saloon S3 8V Q2 GA Parking Aid Control Unit PDC Module ECU 5QA919283C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YMM501474A

Land Rover Range Rover Sport L320 Door Wiring Harness Rear Right O/S YMM501474A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DK62-44250-AD

Land Range Rover Sport L494 Tailgate Hinge Cover Trim Right O/S DK62-44250-AD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. F30-NBT

BMW F30 F31 Unbranded Dashboard Screen Head Unit Display 10.25" NBT 4G 8+64G

€237.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6C1T-14300-DB

Ford Transit Mk7 Battery Positive Lead Cable Harness Wire 6C1T-14300-DB

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2469008813

Module Mercedes W176 A45 AMG M133 4matic All Wheel Drive Control A2469008813

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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