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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Seat Ibiza Mk5 Fr Rear Taillight Lamp LED Left N/S 6F0945207J

€227.95

Free delivery: Aug 10 – 11

If paid before 14:00

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: Aug 10 – 11

If paid before 14:00

Part no. 05L907309AA

Volkswagen Caddy SB 2.0 TDI DTRE 102HP Engine ECU Kit BCM + Key 05L907309AA

€227.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009068802-4

Mercedes Sprinter W906 Alternator Generator FAL1121 A6511540000

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 95B971228AA

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

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 95B971104T

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

€170.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. E92-PDC-WIRING-LOOM-HARNESS-REAR-BUMPER-1

BMW E92 LCI PDC Wiring Loom Harness Rear Bumper

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6838610

BMW 1 Series F40 Aerial probe AM/FM Antenna 6838610

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 8380944-1

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7CP1-18G847-CA

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 079911021G

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

€37.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 9664522280

Peugeot 308 T7 Interior Roof Display Info Seat Belt Indicator Panel 9664522280

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6989713-1

BMW E88 E89 E93 Convertible Cabrio DWA-Alarm System Module Set Of 2 6989713

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2223411000

Mercedes W205 W222 High Voltage Connector Cover Cap A2223411000

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. A2055451500-1

Mercedes W205 W213 C238 Battery Terminal Starter Alternator Wiring A2055451500

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9318579

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9318579

€47.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. FPLA-14F427-KE

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FK72-14C288-AC

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2229002713

Mercedes W222 W205 Electric Parking Brake Control Module ECU A2229002713

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 5G0907324

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

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6401501091

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

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1P0951171

Seat Leon Mk2 1P Interior Headliner Ultrasonic Motion Alarm Sensor 1P0951171

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G1035053G

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

€360.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0919275-ARG

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9193111

BMW X6 E71 Body Control Module Unit ECU Junction Box 9193111

€108.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8634246

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

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0025428819-1

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0015452516

Mercedes W207 Automatic Gearbox Module EGS Control Unit ECU A0015452516

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. JK2T-14B446-ABE

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

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2049005205

Mercedes W204 Dashboard Stereo Display Screen Sat Nav Multimedia A2049005205

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 04L903017A-1

Audi A4 B8 3.0 TDI CAPA Diesel Alternator 04L903017A

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7644251

Mini Cooper One R55 R56 R57 R60 Battery Mounting Bracket Clamp Bolt Holder

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2219005503

Mercedes W221 Air Suspension Module Regulation Control Unit A2219005503

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FK72-14B673-AE

Land Rover Discovery Sport L550 Rear Tailgate Control Unit Module FK72-14B673-AE

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BS7T-14K131-B

Land Rover Freelander 2 L359 Fuse Relay Box BS7T-14K131-B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L903024M

Volkswagen Tiguan 5N Golf Mk5 Alternator Generator Diesel Power 03L903024M

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BJ32-14A076-CA

Range Rover Evoque L538 Fuse Box Relay Lid Cover BJ32-14A076-CA

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9224868

BMW F10 F11 F12 F13 Tweeter Speaker Bang&Olufsen Rear Left Right N/O/S 9224868

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2229004213

Keyless Module Mercedes W205 W213 C253 ECU Door Lock Control Unit A2229004213

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7301271-2

BMW X5 F15 F85 Rear Trunk Lid Boot Tailgate Lamp Light Wiring Left N/S 7301271

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5H0945308A-2

Volkswagen Golf Mk8 CD1 Tail Light Lamp Wiring Inner Rear Right O/S 5H0945308A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 80A915459-1

Audi Q5 FY Battery Positive Cable Clamp Control Module Terminal 80A915459

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0906121B

Audi A4 B9 A5 F5 2.0 TDI Engine Fuel Pump Control Unit Module 8W0906121B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2622341

BMW 2 3 5 Series F10 F22 F30 F32 Antenna Amplifier Module Trap Circuit 2622341

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009059300-KB

Mercedes W205 W212 W246 Parking Distance Sensor Parktronic Black 191 A0009059300

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5J6971161AQ

Skoda Fabia Mk2 Rear Door Wiring Loom Harness Left N/S 5J6971161AQ

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2125407605

Door Wiring Mercedes W212 Loom Cable Rear Left Right N/O/S A2125407605

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06D911021B

Audi A4 B8 A5 8T Engine Starter Motor Actuator Unit Petrol 06D911021B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9437208

BMW F45 F48 F49 Mini Countryman F60 Ground Earth Cable Adapter Mass 9437208

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9226888

BMW 1 Series F20 F21 Antenna Aerial Noise Suppression Filter 9226888

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK2T-19G247-AA

Ford Transit Mk8 Centre Console Power Outlet Socket 12V BK2T-19G247-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6940778

BMW E65 E66 Front Seat Wiring Loom Harness Right O/S 6940778

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0055461340

Mercedes W447 Energy Distributor Plug Module A0055461340

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BG9T-14240-GFC

Ford Mondeo Mk4 Rear Door Wiring Loom Harness Cable Left N/S BG9T-14240-GFC

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059006651

Mercedes C205 GLC C253 Body Control Comfort Module Unit SAM BCM A2059006651

€398.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2215407307

Mercedes W221 Rear Door Wiring Loom Harness Cable Left N/S A2215407307

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3426159

BMW X3 E83 2.5i 3.0i M54 Wiring Loom Harness Engine Automatic Gearbox 3426159

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 04L907445E

Audi Q2 GA 1.6 TDI DDYA 115HP Engine Module Unit ECU Kit 04L907445E Manual

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6980008

BMW E61 E65 E66 Tailgate Trunk Lift Control Module 6980008

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9263803-4

BMW E90 Max Brose Footwell Light Module Control Unit FRM3R 9263803

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0907361A

Volkswagen Golf Mk7 Leon Mk3 Fuse Relay Box Lid Cover 5Q0907361A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4M0906093L

Audi Q7 4M 3.0 TDI Fuel Pump Control Unit Module ECU 4M0906093L

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8A2-14N164-AB

Land Rover Range Rover Velar L560 Alternator Wiring Cable Loom M8A2-14N164-AB

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 95B907159T

Porsche Macan 95B Engine Sound Generator Actuator Module Control Unit 95B907159T

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9128570

PDC Loom Cables BMW E81 E87N LCI Front Bumper Wiring Set 9128570

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. EL2T-19A391-ACW

Ford Transit Custom Mk8 Bluetooth Microphone Unit Module EL2T-19A391-ACW

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3D0951253A

VW Volkswagen Audi Seat Skoda Relay Black 5 Pins 12V 50A Set 433 3D0951253A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CV11-12A650-CE

Ford B-MAX 1.5 TDCI 75HP UGJC Diesel Engine Control ECU 8V2112A650KE Manual

€379.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-14D617-AC

Range Rover L405 Front Door Control Unit Module Passenger Side CPLA-14D617-AC

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0971693

Audi A1 8X Door Wiring Harness Loom Rear Left Right N/O/S Cabling 8X0971693

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2056100534

Mercedes W205 Battery Support Protection Bracket Tray A2056100534

€23.95

Free delivery: Aug 7 – 11

If paid before 14:00

Part no. 8Y0035042C

Audi S3 8Y Body Control Comfort Module ECU Unit Bluetooth 8Y0035042C

€1,139.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9225619

BMW F10 Electronic Front Seat Memory Module Control Unit ECU 9225619

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2048701826

Mercedes S204 Door Module Front Left N/S Control Unit ECU A2048701826

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 431951253D

Audi TT 8N Relay Unit Module 431951253D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DT1T-14B321-AF

Ford Transit Connect Mk2 II Air Module Control Unit ECU DT1T-14B321-AF

€170.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9154349

BMW MINI Clubman R55 Cable Wiring Loom Splitdoor Split Door Rear Left N/S

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 283930431R

Roof Microphone Mercedes Citan W415 Interior Mic Unit Wiring Cable 283930431R

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 04E907309AC-2

Audi A1 8X 1.4 TFSI CZCA 125HP Engine Control ECU Kit 04E907309AC Manual

€180.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8606306-6

BMW F30 320i N20 184HP ECU Kit Engine Control Unit DME 8606306 Key FEM Automatic

€569.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0959107AC

Audi A8 4D Tailgate Lift Boot Lid Control Unit Module Trunk 4H0959107AC

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W8971035AD

Audi A5 S5 F5 Door Trim Panel Harness Wiring Wire Front Driver Side 8W8971035AD

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1036060061

Range Rover Evoque L538 Xenon Headlight Control Module Ballast 1036060061

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8651049

Mini Countryman F60 Battery Ground Earth Mass Cable 8651049

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2229003619

Mercedes W205 W213 W222 Radio Sat Nav Head Unit A2229003619

€522.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1665459340

Mercedes W166 C292 Fuse Box Relay Control Unit Module A1665459340

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. ZR1328B

BMW X3 E83 PCT Automotive Towing Hitch Towbar Tow Bar Trailer Relay Unit ZR1328B

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059000227

Mercedes C205 Vehicle Dynamics Suspension Control Module ECU A2059000227

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. NNW502434

Land Rover Discovery 3 L319 Air Module Control Unit ECU NNW502434

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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