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 Custom Glow Plug Relay Bracket Mount Support KK21-12B681-AC

€23.95

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Part no. 6835155

BMW 1 2 3 Series F40 F44 G20 Radio Antenna Amplifier Suppression Filter 6835155

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. EB3T-18D816-CF

Ford Ranger Mk3 Central Locking Module Control Unit ECU EB3T-18D816-CF

€28.95

Free delivery: Sep 14 – 15

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Part no. 5N0035558

Volkswagen Jetta A6 USB Adapter Wiring Harness Lead Cable Connector 5N0035558

€23.95

Free delivery: Sep 14 – 15

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Part no. FK72-971111-AC

Land Rover Discovery L550 Anti Theft Alarm Wiring Cable Lead FK72-971111-AC

€23.95

Free delivery: Sep 14 – 15

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Part no. 03C906016T

Audi A3 8P 1.4 TFSI CAXC 125HP Engine Control Unit ECU Kit 03C906016T Automatic

€284.95

Free delivery: Sep 14 – 15

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Part no. A2055463100

Retaining Plate Mercedes W205 Relay Fuse Box Holder Bracket A2055463100

€23.95

Free delivery: Sep 14 – 15

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Part no. DS7A-15A563-AB

Ford Mondeo Mk5 Glovebox Storage Stowage Compartment Lamp Light DS7A-15A563-AB

€23.95

Free delivery: Sep 14 – 15

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Part no. 8P4971029K

Audi A3 8P Front Door Wiring Loom Harness Cable Driver Side 8P4971029K

€80.95

Free delivery: Sep 14 – 15

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Part no. YML500373

Land Rover Discovery 3 L319 Front Seat Memory Wiring Harness YML500373

€32.95

Free delivery: Sep 14 – 15

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Part no. 5Q0971250Q

Audi A3 S3 8V Negative Battery Terminal Earth Cable Lead Wiring 5Q0971250Q

€23.95

Free delivery: Sep 14 – 15

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Part no. 9217033

Battery Cable BMW F01 F02 Positive Wiring Plus Pole Red 9217033

€28.95

Free delivery: Sep 14 – 15

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Part no. 4H0919275-SDA

Skoda Octavia 1Z PDC Parking Sensor 4H0919275 Anthracite Grey Metallic - F8J

€23.95

Free delivery: Sep 14 – 15

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Part no. 5Q0907376B

Seat Leon Cupra 5F Suspension Control Unit Module ECU 5Q0907376B

€23.95

Free delivery: Sep 14 – 15

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Part no. 9293311

BMW F20 F21 F30 F31 Rear Body Control Unit Module REM 9329703

€32.95

Free delivery: Sep 14 – 15

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Part no. 2K5959655D

Volkswagen Caddy 2K Air Control Unit Module Controller 2K5959655D

€175.95

Free delivery: Sep 14 – 15

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Part no. 9890597

BMW G11 G12 G30 G31 G32 F93 F97 Airbag ECU Control Unit Module 9890597

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4H0971030HG

Audi A8 S8 D4 4H Front Door Wiring Loom Harness Passenger's Side 4H0971030HG

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K2907115AF-1

Audi A5 8T Engine Module ECU Kit 2.0 TFSI 180HP Key Lock Manual 8K2907115AF

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6864206

Air Module BMW F20 F21 F30 F31 F32 ECU ICM Plus Control Unit 6864206

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8644492

Engine Wiring Mini F56 F60 BMW F45 F46 Petrol Sensor Module 2 Harness 8644492

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. L8B2-14F041-AG

Range Rover Evoque L551 Body Comfort Control Module BCM ECU L8B2-14F041-AG

€161.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5G0972136

VW Volkswagen Golf R Mk7 Cover TV Tuner Cover Top Lid Bracket Holder 5G0972136

€23.95

Free delivery: Sep 14 – 15

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Part no. LR129023

Land Rover Range Rover Velar L560 Door Module Front Driver's Side L8B2-14D618-AG

€32.95

Free delivery: Sep 14 – 15

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Part no. 6R0802717B

Seat Ibiza 6J Audi A1 8X Battery Tray Holder Mounting Bracket Cover 6R0802717B

€23.95

Free delivery: Sep 14 – 15

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Part no. 9456002

BMW F45 X5 F15 Inverter Converter KLE Charging Module Control Unit 9456002

€303.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2078201089

Mercedes W207 A207 Radio Aerial Antenna Amplifier Module Unit A2078201089

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9329339

BMW F32 Telematics Telephone Control Unit Module Bluetooth TCB ECE 9329339

€23.95

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Part no. A2133402600

Mercedes W205 W213 Battery Holder Mounting Bracket Support A2133402600

€32.95

Free delivery: Sep 14 – 15

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Part no. LR087663

Land Rover Discovery Sport L550 Ignition Key Fob Remote Lock Trunk Open LR087663

€61.95

Free delivery: Sep 14 – 15

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Part no. A2709002900

Mercedes X156 GLA200 M270.910 156HP Engine Control ECU A2709002900 Automatic

€379.95

Free delivery: Sep 14 – 15

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Part no. 8200881264

Alternator Support Nissan Qashqai Renault 2.0 dCi Engine Bracket 8200881264

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DG9T-19H464-FA

Ford Mondeo MK5 Aerial Antenna Amplifier Booster Control Module DG9T-19H464-FA

€23.95

Free delivery: Sep 14 – 15

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Part no. A6519009702-7

Mercedes W176 A220d OM651.930 177HP Engine ECU Kit A6519009702 2 Keys Automatic

€284.95

Free delivery: Sep 14 – 15

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Part no. A2188203015

Mercedes CLS C218 USB Socket 12V Power Outlet Wiring Harness Cable A2188203015

€32.95

Free delivery: Sep 14 – 15

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Part no. 9110621

BMW 3 Series E90 E92 LCI Suppression Filter for Antenna 9110621 652 9110621

€23.95

Free delivery: Sep 14 – 15

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Part no. FK72-14D620-BD

Land Rover Discovery Sport Rear Door Control Module ECU Right O/S FK72-14D620-BD

€28.95

Free delivery: Sep 14 – 15

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Part no. 4E0910336J

Audi A5 8T Bluetooth Telephone Control Module Unit ECU 4E0910336J

€113.95

Free delivery: Sep 14 – 15

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Part no. 8T8971688J

Audi A5 S5 8T Door Wiring Loom Harness Wire Cable Rear Right O/S 8T8971688J

€23.95

Free delivery: Sep 14 – 15

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Part no. 8506374-6

BMW E60 E87 E90 120d 177 HP N47 ECU Engine Control Unit DDE 8506374 Manual

€113.95

Free delivery: Sep 14 – 15

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Part no. F1BT-18C815-HE

Ford Transit Connect Radio Stereo CD Player Head Unit F1BT-18C815-HE

€47.95

Free delivery: Sep 14 – 15

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Part no. 9284295

BMW X1 U11 G26 F30 High Voltage Switch Safety Connector 9284295

€23.95

Free delivery: Sep 14 – 15

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Part no. 7202585-3

BMW E90 E91 LCI Bi-Xenon Headlight Lamp Light Left N/S Harness Loom Wire 7202585

€23.95

Free delivery: Sep 14 – 15

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Part no. 7955841-2

BMW G20 G21 G28 Rear Tail Light Lamp Inner Left N/S Harness Wire Loom 7955841

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8J0907601-1

Seat Ibiza 6j Audi A1 S1 8X Impact Alarm Sound Siren Signal Actuator 8J0907601

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8715719

BMW G20 320i Fuse Relay Box Control Unit Rear Power Distribution 8715719

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3421485

BMW X3 E83 X1 E84 Z4 E89 Wiring Harness Grommet Fastener Mount Carrier 3421485

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6421508277

Mercedes CLS C219 OM642.920 Engine Control ECU Kit A6421508277 Automatic

€208.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. FK72-14D374-AJ

Land Rover Discovery L550 Air Module Control Unit ECU BOSCH FK72-14D374-AJ

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8582802-2

BMW F30 F31 330d N57N 258HP Engine Control Unit ECU Kit DDE 8582802 FEM Key

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. LU5T15604BJAE

Ford Puma St Cf7 Body Control Module BCM Keyless Entry Unit LU5T-15604-BJAE

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9361145-2

Mini Cooper One R55 R56 R57 LCI R58 R59 CHAMP 2 Navigation 9361145

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2641479

Ford Focus Mk4 Wireless Charging Module ECU NX7T-19J235-AC

€104.95

Free delivery: Sep 14 – 15

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Part no. 7P6907566A

Volkswagen Touareg 7P Lane Change Assist Module Control Unit Master 7P6907566A

€75.95

Free delivery: Sep 14 – 15

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Part no. 3Q0907338P

Audi Q2 GA Headlight Light Headlamp Lamp Control Module Unit ECU 3Q0907338P

€104.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9243896-1

Central Information Display BMW F10 F11 LCI Boardmonitor Screen 7" 9243896

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. LR034020

Range Rover L405 Engine Starter Motor Unit 4.4 Diesel CPLA-11001-AC

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. F1ET-14A584-CDE

Ford Focus Mk3 Front Wiring Cable Harness Door Driver's Side F1ET-14A584-CDE

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1725409010

Mercedes A207 Front Bumper Wiring Harness Cable A1725409010

€222.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009003039

Mercedes C118 W177 W247 Starter Battery Control Module DC Converter A0009003039

€322.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CH22-14632-CC

Land Rover Discovery 4 L319 Rear Door Wiring Loom Harnes Right O/S CH22-14632-CC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P0915181B

Audi A1 8X Negative Battery Terminal Cable Wiring 7P0915181B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8516739-8

Mini Cooper SD R55 R56 LCI R60 143HP N47N Engine Control ECU DDE 8516739 Manual

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0025451301

Mercedes W169 W245 W907 W910 Fuse Box Carrier A0025451301

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C0937548

Volkswagen Passat CC Rear Tailgate Fuse Box Power Distribution 3C0937548

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8368932

BMW E39 Alarm Sensor Comfort Control Module Unit ECU 55892110

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2465400512

Seat Wiring Mercedes C117 Front Seat Left Wiring Harness a2465400512

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HJ32-14632-ATB

Range Rover Evoque L538 Rear Door Wiring Harness Cable Left N/S HJ32-14632-ATB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6S6T-14B056-KC

Ford Fiesta Mk5 Fusion Mk1 Air Control Module Unit ECU 6S6T-14B056-KC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W5945094AA-1

Audi A4 B9 S4 8W Rear Tail Light LED Right O/S Wire Cable Harness 8W5945094AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. GK21-13C148-AB

Ford Transit Mk9 Headlight Control Unit Module ECU GK21-13C148-AB

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2134489

Ford Kuga Mk1 C394 Starter Motor 2.5 Turbo Petrol 6G9N-11000-JB

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. M8A2-14516-BC

Land Rover Range Rover Velar L560 Fuse Relay Box Fusebox M8A2-14516-BC

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1S0919275D-TOG

Audi Q3 8U PDC Parking Distance Control Sensor Tornado Grey-X7P 1S0919275D

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 038903018P

Volkswagen Golf Mk4 GTi Alternator Generator 110A 14V 038903018P

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009054807-2

Mercedes W118 W177 W206 W247 NOX Sensor Electronics Module A0009054807

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2139005311

Mercedes W213 Head Unit CD Media Player Audio Auto Radio Controller A2139005311

€170.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3AF035552

VW Volkswagen Passat B7 Radio Aerial Antenna Amplifier Left N/S 3AF035552

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. EK2T-14B428-RA

Ford Transit Custom Bluetooth Control Module Unit ECU EK2T-14B428-RA

€37.95

Free delivery: Sep 14 – 15

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Part no. 8795477

BMW G20 Power Distribution Box LIN Module Control Unit ECU 8795477

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. KU5T-14A003-GA

Ford Transit Custom Mk8 Mk9 Fuse Box Cover Cap Trim Lid KU5T-14A003-GA

€28.95

Free delivery: Sep 14 – 15

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Part no. A2229009608

Mercedes W205 BCM Body Control Module Unit ECU A2229009608

€61.95

Free delivery: Sep 14 – 15

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Part no. 8X0971693A

Audi A1 8X Door Wiring Harness Loom Rear Left Right N/O/S Cabling 8X0971693A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2749000800-7

Mercedes W205 C200 274.920 184HP Engine Control ECU Kit A2749000800 Automatic

€303.95

Free delivery: Sep 14 – 15

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Part no. A1695402733

Mercedes W169 W245 Cable Loom Wiring Parking Sensors Rear A1695402733

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W6945093AA-1

Audi A5 F5 Rear Tail Light Matrix LED Lamp Wiring Inner Left N/S 8W6945093AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. KK2T-15K868-AEE

Ford Transit Custom Rear Bumper Parking Sensor Wiring Loom KK2T-15K868-AEE

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7944003

BMW G30 G31 G11 G32 GT PDC Module Parking Assist Distance Control Unit 7944003

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0937125B

Volkswagen Golf Sportsvan Fuse Box Engine Compartment Relay Unit 5Q0937125B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469007307

Mercedes W176 R231 PDC Parking Control Module Parktronic System N62 A2469007307

€23.95

Free delivery: Sep 14 – 15

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Part no. 9270356-3

BMW F40 Mini F55 F56 Fuse Box Power Distribution Junction Relay Unit 9270356

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5WA959655M

Skoda Octavia Mk4 Air Module Control ECU Unit 5WA959655M

€104.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03C906027CH

Volkswagen Sharan 7N 1.4 TSI CAVA Engine Control Unit ECU 03C906027CH Automatic

€180.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6947786

BMW E60 E61 E63 E64 Steering Column Adjuster Switch 6947786

€23.95

Free delivery: Sep 14 – 15

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Part no. 6M21-U406A10-AD

Ford Galaxy Mk2 S-Max Boot Lid Tailgate Spring Strut Pair 6M21-U406A10-AD

€23.95

Free delivery: Sep 14 – 15

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Part no. YWC000712

Land Rover Range Rover L322 Air Module Unit Control ECU YWC000712

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1775402610

Mercedes W177 Fuel Tank Fuel Pump Wiring Loom Harness 282814 Petrol A1775402610

€37.95

Free delivery: Sep 14 – 15

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Part no. 8512415-9

Mini One D R60 N47N 90HP Diesel Engine Control Module ECU DDE 8512415 Manual

€37.95

Free delivery: Sep 14 – 15

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Part no. 8K0959792C

Audi A4 B8 Door Module Control Unit ECU Front Left N/S 8K0959792C

€23.95

Free delivery: Sep 14 – 15

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