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 Connect Mk2 BCM Body Control Module Unit ECU DN1T-15K600-EF

€47.95

Free delivery: Nov 12 – 13

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Part no. RMHPLA-19C216-HA

Land Range Rover L405 Multimedia Radio Navigation Head Unit RMHPLA-19C216-HA

€1,348.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7640004-3

Mini Cooper R56 Engine N12 1.6 120HP Engine Control ECU Kit DME 7640004 Manual

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW F10 F11 ICM Control Module Unit 6799576

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0906093A

Audi A3 8V 8Y VW Golf 5G Fuel Pump Control Unit ECU 2.0 TSI Petrol 5Q0906093A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GJ32-14A280-BD

Range Rover Evoque L538 Battery Positive Wire Loom Harness Cable EJ32-14A240-AB

€66.95

Free delivery: Nov 12 – 13

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Part no. JPLA-14D620-BB

Range Rover Sport L494 Door Control Unit Module Rear Right O/S JPLA-14D620-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8574093-5

BMW F10 F30 320d 520d 163HP Engine Control N47N ECU DDE 8574093 Automatic

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8055326

BMW F80 M3 F82 M4 F83 M4 LCI Fuel Tank Heat Insulation Plate 8055326

€23.95

Free delivery: Nov 12 – 13

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Part no. 8R0971036A

Audi Q5 8R Door Wiring Loom Harness Cable Front Passenger Side 8R0971036A

€23.95

Free delivery: Nov 12 – 13

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Part no. 5A0B302

BMW F20 F30 Mini F60 KAFAS 2 Camera Speed Control ECU Module Unit 5A0B302

€28.95

Free delivery: Nov 12 – 13

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Part no. 05E903026C

Seat Leon Mk3 5F Alternator Generator Unit 140A 1.5 TSI Petrol Engine 05E903026C

€42.95

Free delivery: Nov 12 – 13

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Part no. 7549802-1

BMW X3 F25 Rear Lamp Trim In The Side Panel Left N/S Plug Socket 7549802

€23.95

Free delivery: Nov 12 – 13

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Part no. 6F2971121AG

Seat Ibiza Mk5 Fr Door Wiring Loom Harness Wire Front Passenger Side 6F2971121AG

€37.95

Free delivery: Nov 12 – 13

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Part no. 9267419-1

BMW E81 Body Control Module Unit H1 61359267419 9267419

€23.95

Free delivery: Nov 12 – 13

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Part no. BK2T-14A075-AA

Ford Transit Custom Mk8 Fusebox Cover Upper Lid Trim BK2T-14A075-AA

€32.95

Free delivery: Nov 12 – 13

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Part no. DH22-14B192-EA-2

Land Rover Discovery Sport L550 Relay 4-Pin 12V 70A Grey Set X2 DH22-14B192-EA

€23.95

Free delivery: Nov 12 – 13

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Part no. A2075404107

Mercedes W204 M276 NOX Sensor Adapter Left N/S Harness Wiring Cable A2075404107

€37.95

Free delivery: Nov 12 – 13

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Part no. 7391042

BMW F10 F30 X1 F48 Mini F54 Rear Tailgate Smart Opener Top Wire Sensor 7391042

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DM5T-14B321-RA

Ford C-Max Mk2 Air Control Module ECU SRS DM5T-14B321-RA

€51.95

Free delivery: Nov 12 – 13

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Part no. A2721503933

Engine Wiring Mercedes C209 272960 Petrol Module Loom Harness Cables A2721503933

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8801727

BMW X1 F48 LCI F39 F45 Mini F60 Adapter Lead EPS 8801727

€56.95

Free delivery: Nov 12 – 13

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Part no. F1ET13N064AD

Ford Focus Mk3 Steering Column Stalk Slip Mount Bracket Module F1ET-13N064-AD

€23.95

Free delivery: Nov 12 – 13

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Part no. 6927786

BMW X5 Series E53 Amplifier Compensator Holder Catch Bracket 6927786

€23.95

Free delivery: Nov 12 – 13

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Part no. 7L0937401-1

Volkswagen Touareg 7L Positive Cable Battery Point Box Jump Unit 7L0937401

€23.95

Free delivery: Nov 12 – 13

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Part no. 6952984

BMW E60 E61 E63 E64 Front Door Air Module Control Unit Passenger Side 6952984

€23.95

Free delivery: Nov 12 – 13

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Part no. 7416986-2

Mini F56 Cabrio F57 Front Headlight Head Lamp Right O/S Harness Loom 7448384

€23.95

Free delivery: Nov 12 – 13

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Part no. A2049002002

Mercedes W204 C207 Air Suspension Dynamic Level Control Unit Module A2049002002

€45.95

Free delivery: Nov 12 – 13

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Part no. EM5T-18C815-XE

Ford Focus Mk3 B-Max Radio Stereo CD Player Head Unit AHU EM5T-18C815-XE

€23.95

Free delivery: Nov 12 – 13

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Part no. LR034014-

Land Range Rover Sport L494 Alternator Generator 12V 3.0 Diesel CPLA-10300-BD

€61.95

Free delivery: Nov 12 – 13

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Part no. 4E0971687DB

Audi A6 C7 4G Rear Door Harness Wiring Loom Cable Left Right N/O/S 4E0971687DB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9663798180

Peugeot 308 T7 Fuse Box Body Control Module BSI BCM 9663798180

€42.95

Free delivery: Nov 12 – 13

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Part no. 079971822

Audi S5 8T 4.2 FSI Ignition Coils Wiring Cable Guide Duct Cyl.1-4 079971822

€23.95

Free delivery: Nov 12 – 13

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Part no. A1729050151

Mercedes-Benz A B Class W176 W246 Roof Towing Alarm Sensor Switch Module

€23.95

Free delivery: Nov 12 – 13

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Part no. A2059007147

Mercedes C205 Control Body Comfort Module Unit ECU A2059007147

€42.95

Free delivery: Nov 12 – 13

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Part no. 1889801

Ford Fiesta Mk7 Aerial Antenna Wiring Loom Harness Cable BA6T-18812-DH

€23.95

Free delivery: Nov 12 – 13

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Part no. A0009051503-1

Mercedes W166 W205 w447 Rear View Camera Reversing Module Control A0009051503

€108.95

Free delivery: Nov 12 – 13

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Part no. EJ32-12C520-VC-2

Range Rover L538 Engine Control ECU 2.2 Diesel 190HP Automatic EJ32-12C520-VC

€61.95

Free delivery: Nov 12 – 13

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Part no. 7515030-4

Mini Cooper S R52 R53 Petrol W11Alternator Generator 105A 7515030

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H0945307A-2

VW Volkswagen Golf Mk8 CD1 Tail Light Lamp Wiring Inner Rear Left N/S 5H0945307A

€23.95

Free delivery: Nov 12 – 13

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Part no. 070971033A

VW Transporter T5 Injection Nozzle Wire Left N/S 2.5 TDI AXD AXE BLJ 070971033A

€28.95

Free delivery: Nov 12 – 13

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Part no. A6398201389

Mercedes W639 Radio Navigation CD Player System Head Unit A6398201389

€336.95

Free delivery: Nov 12 – 13

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Part no. 8A61-17N400-AC

Ford Fiesta Mk7 Rear View Tailgate Camera Wiring Loom Harness 8A61-17N400-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8586540-2

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

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K8D2-15607-AC

Range Rover Sport L494 Keyless Entry Module Control Module K8D2-15607-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8355056

BMW 5 X5 Series E53 Fuel Tank Flap Actuator 8355056

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2044400102

Mercedes W204 Airmatic Air Suspension Control Unit Module ECU A2044400102

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129004001

Mercedes W212 Fuse Box Control Unit Module SAM Relay Electrical Unit A2129004001

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079971627Q

Audi RS4 B8 RS5 8T Fuel Injector Wiring Loom Harness 4.2 V8 079971627Q

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK2T-19L540-AB

Ford Transit Custom Sliding Door Wiring Loom Harness Left N/S GK2T-19L540-AB

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5QD951605

Skoda Superb Mk3 3V Anti-Theft Alarm Siren Horn Signal Module Unit 5QD951605

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K8D2-114B06-AC

Range Rover Evoque L551 Battery Shield Bracket Tray Cover K8D2-114B06-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. K8D2-18808-BB

Land Range Rover Evoque L551 Rear Door Speaker Left Right N/O/S K8D2-18808-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468AF

Audi A4 B8 A5 8T Q5 8R Gateway Control Unit Module 8T0907468AF

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0919283A

Volkswagen Touran 1T Parking Control Unit Module Sensor 1K0919283A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8742025

BMW G20 G21 G31 Battery Terminal Earth Ground Cable Wire 8742025

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B971228AA

Porsche Macan 95B Battery Starter Motor Alternator Wire Cable Loom 95B971228AA

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971095F

Audi A4 B9 Front Bumper PDC Parking Sensor Wiring Harness Cable 8W0971095F

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B971104T

Porsche Macan 95B PDC Parking Sensor Wiring Rear Bumper Loom 95B971104T

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9673892880

Citroën C4 Picasso Rear Fog Lamp Wire Connector Plug Wiring Loom 9673892880

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6838610

BMW 1 Series F40 Aerial probe AM/FM Antenna 6838610

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8616810

BMW 1 2 3 4 Series F20 F21 F22 F23 F30 F31 F32 Battery Cable Connecying Line

€23.95

Free delivery: Nov 12 – 13

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Part no. 8380944-1

BMW E46 E65 E66 E67 Aerial Antenna Amplifier Radio Signal Trap Circuit 8380944

€23.95

Free delivery: Nov 12 – 13

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Part no. 7CP1-18G847-CA

Ford Focus MK3 Aerial Antenna Amplifier Module Unit 7CP1-18G847-CA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079911021G

Audi RS4 B8 Starter Motor Petrol Engine Electrical Unit Actuator 079911021G

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KX63-189E2-AA

Land Rover Discovery Sport L550 Glow Plug Relay Module Unit Diesel KX63-189E2-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906016MH-2

Audi A6 C6 Engine Control ECU Kit 2.0 TDI BRE 140HP Diesel Manual 03G906016MH

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KV6A-5H298-CF

Ford Transit Connect Mk2 AdBlue Control Module Unit 1.5TDCi Diesel KV6A-5H298-CF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2223411000

Mercedes W205 W222 High Voltage Connector Cover Cap A2223411000

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AM911023G

Audi A3 8V Engine Starter Motor Actuator Starter 0AM911023G

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR072048

Land Rover Discovery Sport L550 Heater Water Pipe Hose 2.0 Diesel G4D3-8A594-BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8583606

BMW X3 F25 X4 F26 Diesel Automatic Engine Wiring Harness Gearbox Cable 8583606

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJG3125AD

Jaguar XK8 X100 Brake Booster Lead Link Wire Harness LJG3125AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971030K

Audi A5 8T Front Side Door Wiring Harness Loom Cables Passenger Side 8T0971030K

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055451500-1

Mercedes W205 W213 C238 Battery Terminal Starter Alternator Wiring A2055451500

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9318579

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9318579

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0959795M

Audi A6 C6 Rear Door Left Right N/O/S Module Unit Control ECU 4F0959795M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519004500-1

Mercedes W205 C220d 651.921 170HP BlueTEC Engine ECU Kit A6519000603 Key SAM

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CH22-14632-DC

Land Rover Discovery 4 L319 Door Wiring Harness Rear Right O/S CH22-14632-DC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7207150

BMW F10 F11 Plug Bumper Front Trim Dummy Plug Right O/S Panel 7207150

€23.95

Free delivery: Nov 12 – 13

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Part no. FPLA-14F427-KE

Range Rover Sport L494 Steering Rack Wiring Harness Cable FPLA-14F427-KE

€23.95

Free delivery: Nov 12 – 13

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Part no. FK72-14C288-AC

Range Rover Evoque L538 Seat Occupancy Sensor Front Passenger FK72-14C288-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Skoda Fabia 5J RS Door Radio Remote Central Locking System Sensor 5J6868391

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0915181H

Audi A1 8X Negative Minus Battery Terminal Cable 1.4 TFSI CAXA Petrol 8K0915181H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K8D2-18C901-AD

Range Rover Evoque L551 Antenna Control Unit Amplifier Right O/S K8D2-18C901-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9231442

BMW 2 3 4 Series F22 F30 F32 F36 Antenna Suppression Filter Aerial 9231442

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779007305

Mercedes C118 W177 W247 Audio Amplifier Radio Sound Burmester Unit A1779007305

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0907324

Audi RSQ3 F3 VW Golf MK7 Active Suspension Module Mount Bracket Holder 5G0907324

€23.95

Free delivery: Nov 12 – 13

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Part no. A6401501091

Mercedes W169 W245 OM640.941 140HP Engine Control ECU A6401501091 Automatic

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G1035053G

Audi Q7 4l Radio Satelite Navigation System Control Head Unit ECU 4G1035053G

€360.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7588502-8

Mini Cooper R55 R56 N12 1.6 120HP Engine ECU Kit DME 7588502 CAS3 Key Manual

€208.95

Free delivery: Nov 12 – 13

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Part no. 4H0919275-ARG

Skoda Octavia Mk2 PDC Parking Distance Sensor 4H0919275 Arctic Green Metallic 8B

€23.95

Free delivery: Nov 12 – 13

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Mercedes W447 Horn Signal Wiring Connector Electrical Cable A4475401011

€23.95

Free delivery: Nov 12 – 13

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Part no. 8634246

Mini F54 F60 B42 B46 B48 Ignition Injection Valve Wiring Harness Loom 8634246

€32.95

Free delivery: Nov 12 – 13

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Part no. 8506373-3

BMW X3 E83 LCI 2.0d N47 177HP Engine Control Unit ECU DDE 8506373 Automatic

€99.95

Free delivery: Nov 12 – 13

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Part no. A0025428819-1

Mercedes W176 W246 Relay Current 4 Pin 12V Hella A0025428819 Set x2

€23.95

Free delivery: Nov 12 – 13

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Part no. 8V21-10718-AD

Ford Fiesta Mk7 Battery Box Tray Housing Holder Bracket 8V21-10718-AD

€23.95

Free delivery: Nov 12 – 13

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Part no. JK2T-14B446-ABE

Ford Transit Custom Front Bumper Wiring Loom Harness Alarm Cable JK2T-14B446-ABE

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048204639-3

Mercedes W204 Headlight Lamp Light Front Right O/S Wire Harness Loom A2048204639

€23.95

Free delivery: Nov 12 – 13

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