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 W169 W245 Battery Earth Negative Cable Wiring Loom A1695406409

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W8971687M

Audi A5 F5 Sportback Door Wiring Harness Loom Rear Left N/S 8W8971687M

€47.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 5N0035558

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FK72-971111-AC

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8517616

Earth Ground Cable BMW F10 N47N Diesel Battery Cable Engine Wiring 8517616

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03C906016T

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

€284.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6827161

Mini Cooper F55 F56 Control Unit Module Active Sound Design Amplifier 6827161

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DS7A-15A563-AB

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8606306

BMW F10 F11 F30 184 HP Petrol N20 Engine Control Unit ECU DME 8606306 Manual

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2188203015

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

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9315080

BMW X3 F25 Window Lifter Switch Driver's Side Wiring Harness Loom Cable 9315080

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8715719

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

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2K5959655D

Volkswagen Caddy 2K Air Control Unit Module Controller 2K5959655D

€175.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2469008115

Mercedes W176 W246 Gearbox Transfer Case Control Module Unit ECU A2469008115

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6421501230-2

Mercedes C219 Engine Control ECU 272HP Diesel CLS 350 Automatic A6421501230 KIT

€165.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6904165

BMW X5 E53 Front Dashboard Centre Console Lighter Wiring Loom Harness 6904165

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048208526

Mercedes W204 Parking Sensor Parktronic Display Control A2048208526

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0035456A-1

Antenna Amplifier Audi Q5 8R A6 C6 A5 8T Mobile Phone Module Unit 8J0035456A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1S0919275D-BLK

Audi Q3 8U PDC Parking Distance Control Sensor Black - Z9Y 1S0919275D

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7243564

BMW F20 F30 Front Sport Seat Backrest Heating Mat Element 7243564

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2044400605

Mercedes W204 Wiring Loom Cable Harness Door Front Left N/S A2044400605

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8571350

BMW 1 5 Series F10 F11 F20 F21 LCI B47 Starter Acoustic Vibration Plug 8571350

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8510829-3

BMW E90 E91 LCI 320d N47N Engine Basic DDE 8510829 Control Unit Manual

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR087663

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

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6986077

BMW E81 E87 E90 E91 E92 6-disc CD Changer Without Magazine 6986077

€28.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A0025451301

Mercedes W169 W245 W907 W910 Fuse Box Carrier A0025451301

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048705490

Mercedes-Benz C W204 Digital Audio DAB Receiver Control Unit Module A2048705490

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2709002900

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

€379.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0045429218

YAW Rate Sensor Mercedes W203 W209 R171 Accelerator Speed Module A0045429218

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A6519009702-7

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

€284.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0937086M

VW Volkswagen Scirocco Mk3 Body Control Module BCM 2.0 TDI Diesel 1K0937086M

€118.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. FK72-14D620-BD

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

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8795477

BMW G20 Power Distribution Box LIN Module Control Unit ECU 8795477

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8P0035503M

Audi A3 8P Bluetooth Antenna Module Control Unit 8P0035503M

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9266838

BMW X3 F15 Can Bus Interface 120Ohm Control Module Unit ECU 9266838

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4E0910336J

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

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9890597

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

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1718300272

Mercedes A B ML Class W166 W169 W245 Interior Temperature Sensor A1718300272

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8E0057185KX

Audi A4 B7 Radio Media Player Audio CD Head Unit Player Concert 8E0057185KX

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7M0951253C-1

VW Volkswagen T5 Audi Seat Skoda Relay Black Control Unit 5 Pin 12V 7M0951253C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7620497AB

Citroën Relay III Peugeot Boxer Ducato Wiring Harness Cable Loom 7620497ABAA

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6R0971349L

Seat Ibiza 6j Skoda Fabia 54 Three Phase Alternator Harness Wiring 6R0971349L

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3AF035552

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1709317

BMW X5 E53 E60 E61 E63 E64 Petrol Engine Ping Knock Sensor 1709317

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 7938196

PDC Module BMW F45 X3 F25 Mini F55 F56 Parking Distance Sensor Unit 7938196

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 5Q0907530AC

Volkswagen Golf Mk7 Gateway Control Unit Module 5Q0907530AA

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8R0907468N

Audi A5 8T Gateway Control Module Unit ECU 8R0907468N

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 899543000

Porsche Boxster 986 A/C Air Conditioning Relay Control 12V 10A 899543000

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2135403839

Mercedes W213 C238 Power Relay Fuse Box Unit Cover A2135403839

€56.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8K0907637A

Audi A5 8T Acceleration Yaw Rate Sensor Module Control Unit ECU 8K0907637A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8580192

Glow Plug Cable BMW G20 X3 G01 B47 Wiring Harness Engine Glow Module 8580192

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9363780

BMW F45 Seat Wiring Loom Harness Cable Rear Left N/S 9363780

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 9299335

BMW F01 F02 F07 F10 F11 CAS4 Control Unit Key Reading Module 9299335

€56.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A1725409010

Mercedes A207 Front Bumper Wiring Harness Cable A1725409010

€222.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0959592K

Audi Q2 GA Door Module Control Unit Front Passenger Side 5Q0959592K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. Q0009857V001

Smart Roadster W452 Heated Seat Control Relay Module 9 Pin Black Q0009857V001

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8K0959792

Audi A4 B8 Door Module Control Unit Module ECU Front Left N/S 8K0959792

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129005101

Fuse Box Mercedes W212 Rear SAM Relay Fuse Box Control Module A2129005101

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9270356-3

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3C0937548

Volkswagen Passat CC Rear Tailgate Fuse Box Power Distribution 3C0937548

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7952991

BMW U06 Active Tourer Power Management Control Unit Power Supply Module 7952991

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059001240

Mercedes GLC 220d X253 Air Conditioning Climat A/C Control Module A2059001240

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6M21-U406A10-AD

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KV6T10C679BC

Ford Transit Connect Battery Cable Negative Lead Terminal Harness KV6T10C679BC

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. YWC000712

Land Rover Range Rover L322 Air Module Unit Control ECU YWC000712

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1775402610

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

€37.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. KT1T-18D815-DF

Ford Transit Connect Mk2 Radio Head Unit Audio Player KT1T-18D815-DF

€118.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 6775949

BMW E90 E91 E92 Longitudinal Dynamic Module Cruise Control 6775949

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 038903018P

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

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6929554

BMW E65 E66 Door Air Module Sensor Control Unit Front Right O/S 6929554

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8T8971688J

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. F1BT-18C815-HE

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

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048207885

Mercedes-Benz C-Class W204 Rear Right Door O/S Control Unit Module A2048207885

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9284295

BMW X1 U11 G26 F30 High Voltage Switch Safety Connector 9284295

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9253780

Boot Release Switch BMW F01 F02 F10 F11 LCI Auto Tailgate 9253780

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7202585-3

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7955841-2

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

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 9145097

BMW 3 5 7 X3 X5 Z4 Series E38 E39 E46 E53 E85 E83 Control Unit EWS III

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0959795P

VW Touareg 7P Rear Door Module Control Unit Left Right N/O/S 4H0959795P

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9159795

BMW X5 X6 E70 E71 Control Unit Air Module Bag ECU Unit Bosch 9159795

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8519663-14

Mini Cooper D R56 LCI R60 N47N 112HP Diesel Engine Unit ECU DDE 8519663 Manual

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

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