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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Volkswagen Golf CD1 Keyless Go Module ECU Entry Control Unit 5Q0959435A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR079256

Land Rover Discovery Sport L550 L494 L538 Jaguar XF Alternator GX73-10300-DE

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7599378

Transmission Wiring BMW F20 Petrol N55 Automatic Gearbox- Engine Harness 7599378

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9239781

BMW F10 Front Bumper Parking Sensor PDC Wiring Harness Loom Wire 9239781

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775407932

Mercedes W177 W247 Positive Battery Cable Lead Wire Starter A1775407932

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468P

Audi S5 8T Gateway Control Unit Module ECU 8T0907468P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0035785A

Audi A5 8T MMI Multimedia Interface Unit Module Control ECU 8T0035785A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6909235

BMW Z4 Series E85 E86 Petrol Pressure Hose Compressor Condenser 6909235

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6801509

Wireless Charger BMW F90 M5 G30 Centre Console Phone Module Unit 6801509

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118203375

Antenna Booster Mercedes W211 Rear Boot Lid Tailgate Amplifier A2118203375

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009068706

Mercedes W205 C43 Alternator Generator VALEO 200A 3.0 Petrol A0009068706

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0959801F

Audi A3 8P Door Window Lifter Regulator Motor Front Right O/S 8P0959801F

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0971035A

Audi TT 8J Door Wiring Loom Harness Cable Driver Side 8J0971035A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9371789

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9371789

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9196591

BMW E88 Cabrio Convertible Folding Top Roof ECU Module CVM6 9196591

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02T911023R

VW Polo 6R Seat Ibiza Mk4 Starter Motor Bosch 1.2 Petrol CGPB 02T911023R

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA937615

Audi A3 S3 8Y Fuse Box Control Module Relay Box Electrical Unit 5WA937615

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0907468Q

Audi Q3 8U Gateway Control Module Unit ECU 8U0907468Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129001929

Mercedes W176 Keyless Control Module Unit ECU A2129001929

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9291731

BMW F10 Seat Wiring Cable Front Right O/S Electrical Loom Harness 9291731

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635402333

Mercedes-Benz M ML W163 Centre Console Wiring Harness Cable Loom A1635402333

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6941485

BMW X5 X3 E53 E83 Control Module Unit Sliding Lifting Roof

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075400440

Mercedes-Benz E-Class A207 Additional Battery Tray Holder Mounting Bracket

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906021MP

VW Volkswagen Touran TDI Diesel Engine Control Unit ECU 03G906021MP

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468H

Audi A4 B8 Gateway Interface Control Module Unit ECU 8T0907468H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7843349

BMW F10 F11 LCI M5 F06 F13 M6 S63N Cable Alternator Starter Base B+ 7843349

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6429004300

Mercedes W221 Engine Control Unit Module ECU A6429004300

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959792S

Audi A4 B8 Front Door Control Module Unit ECU Passenger Side 8K0959792S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0906121D

Audi A4 B9 A5 F5 A6 C8 Fuel Pump Control Pump Unit Module ECU 4K0906121D

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GX73-12C520-FAF-1

Range Rover Evoque L538 2.0 204DT 180HP 4x4 Engine ECU GX73-12C520-FAF Manual

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AA6T-14B321-BA

Ford Fiesta Mk7 VI Air Module ECU Module Control Unit SRS AA6T-14B321-BA

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9115107-1

BMW X5 Series E70 E70N LCI Wiring Set Wash Water Container Cable Loom 9115107

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 022906032BE

VW Touareg 7L 3.2 V6 Petrol 220HP Module ECU Control Unit 022906032BE Automatic

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6906606

Mini Cooper One R50 R52 R53 Fuse Box Electrical Unit Cover Cap Black 6906606

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0862335F-1

Audi A4 B8 Bluetooth Multimedia Interface Control Module Unit ECU 8T0862335E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937615C-2

Seat Leon Mk3 5F Fuse Relay Box Module Electrical Control Unit 5Q0937615C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0907364B

Audi Q5 8R A5 8T A4 B8 Active Suspension Module Damping Control Unit 8R0907364B

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3M5T-14B006-AD

Land Rover Freelander L359 Sensor Front Impact Crash Sensor 3M5T-14B006-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420919275

Audi A4 B8 A5 8T Rear Bumper PDC Sensor Parking Distance Control 420919275

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907530H

Audi A3 8V Gateway Interface Control Unit Module ECU Interface 5Q0907530H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8509036-8

BMW E90 E91 335d M57N2 286HP Engine ECU DDE Kit CAS3 + Key Fob 8509036 Automatic

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0971104D

VW Volkswagen Golf Mk7 Wiring Loom PDC Rear Harness Parking Sensor 5G0971104D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8D0959591C

VW Volkswagen Golf Mk5 Sunroof Sliding Roof Drive Unit Motor Actuator 8D0959591C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA907801H

Audi Q3 8U Parking Brake Handbrake Module Control Unit 3AA907801H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J0906381B

Audi TT 8N Fuse Box Relay Control Unit Module 1J0906381B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6799887

Crash Module BMW F01 F02 LCI F10 F11 F13 ICM Control Unit ECU 6799887

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 90494959

GM Vauxhall Opel Relay 4-Pin Multi Use Glow Plug Unit Magenta 90494959

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0907468L

Audi A5 8F Gateway Control Unit Module ECU 8R0907468L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9119578

Antenna Amplifier BMW Z4 E85 E86 Rod Antenna Unit Module 9119578

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W8035225D

Audi A5 F5 Radio Aerial Antenna Amplifier Left Upper N/S 8W8035225D

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5M5T14B192AA

Ford Transit Custom Mk8 Relay 4-Pin Black 12V 20A 5M5T-14B192-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0910289K

Audi Q7 4L Body Control Comfort Unit Module BCM Unit ECU 4L0907289K

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9383182

BMW F20 F21 F22 F30 F31 F32 F36 Body Control Module Unit FEM LR01 9383182

€199.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0951605B

Audi Seat Skoda Volkswagen Golf Mk8 Anti Theft Alarm Siren 5Q0951605B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8574091

BMW F10 F11 520d N47N 184HP Engine Control Unit ECU DDE 8574091 Automatic

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6911038

BMW E46 X5 E53 Air Module Side Impact Crash Sensor Bosch 6911038

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7527610

Mini Cooper R50 W10 116HP Petrol Engine Control Unit ECU DME 7527610 Automatic

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1179009200

Mercedes W176 Air Module Belts System Control Unit ECU Bosch A1179009200

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9389229

Mini F57 Cabrio Door Wiring Cable Harness Loom Front Left Right N/O/S 9389229

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7512967-1

Mini Cooper R50 R52 R53 Base B Terminal Point Engine Compartment 7512967

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9266350

BMW F01 F02 HiFi System Amplifier Harman Becker Audio Booster 9266350

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6836504

BMW F20 F21 LCI F30 F31 F32 F13 Electric Coolant Fan Motor Relay 130A 6836504

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0035223AP

Audi A4 S4 B8 Audio Amplifier Sound Booster Control Unit Module 8T0035223AP

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A2D558

BMW X3 G01 G20 G21 G30 G31 Audio Receiver DAB ECE Control Module 5A2D553

€222.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3417160

BMW X3 E83 LCI Cable Alternator Starter Base B 3417160

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025428719-1

Mercedes W176 W204 W207 W166 Relay 4 Pin Grey Hella SET X2 A0025428719

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049007508

Mercedes W204 Display Screen Monitor Radio Sat Nav Navigation Unit A2049007508

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8512292-2

BMW E90 E91 LCI N47N 316d 116HP Engine ECU Kit DDE 8510832 + CAS3 + Key Manual

€146.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9264924

BMW F01 F02 F10 F11 F13 Power Distribution Fuse Box Rear 9264924

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469004519

Gearbox Module Mercedes W176 W246 Control Unit ECU Automatic A2469004519

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0061514501-3

Mercedes W204 W212 Sprinter W906 Starter Motor OM651 Diesel Engine A0061514501

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9123994

BMW Z4 Series E89 Cabrio Roadster Radio Antenna Mast Aerial FM Bumper 9123994

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14K138-BDF

Ford Fiesta Mk7 Front Door Wiring Harness Cable Left N/S C1BT-14K138-BDF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959655F

Audi A4 B9 Air Module Crash Control Module Unit ECU 8W0959655F

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9264917

BMW Z4 E89 Roadster Air Module Control Unit ECU 9264917

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8678976

Engine Wiring Mini F56 BMW F40 Petrol B38C Valvetronic Servo Motor Harness

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7607685-4

Mini R56 LCI One 55KW N16 75HP Petrol Engine ECU Kit DME 7607685 CAS3 + Keys

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0959354

Porsche Cayenne 92A Front Side Door Crash Sensor Left Right N/O/S 7P0959354

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048709426

Mercedes W204 Air Module Control Unit SRS Sensor ECU A2048709426

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DT1T14B321AG

Ford Transit Connect Mk2 II Air Module Control Unit ECU DT1T14B321AG

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0986021230

BMW 3 Series E90 E91 E92 E93 Engine Starter Motor 0 986 021 230

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6977723

BMW E87 Light Module Control ECU Unit LCM Footwell Module PL2 FRMFA 6977723

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W6907217A

Audi A5 F5 Front Windscreen Windshield Lane Assist Camera 8W6907217A

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7939168

Rain Sensor BMW F20 F21 F30 F31 Windscreen Light Solar Condensation Unit 7939168

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469066600

Fuse Box Mercedes W156 W176 W246 Front Relay Control Unit Module A2469066600

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3412244

BMW X3 E83 Wiring Harness Engine Loom Wire Gearbox Module 3412244

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AE8T-14A003-AA

Ford Fiesta Mk7 Fuse Box Cover Housing Lid Trim Cap Panel AE8T-14A003-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465403805

Mercedes W176 W245 Front Left N/S Door Wiring Loom Harness A2465403805

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0035502B

Audi A4 B9 Wireless Charger Centre Console Phone Charging Module 8W0035502B

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-5162-A

Land Rover Discovery L550 Cover Fuse Box Battery Trim Panel FK72-5162-A

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7243564

BMW F20 F30 Front Sport Seat Backrest Heating Mat Element 7243564

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729017601

Mercedes SLK R172 Front Air Module SRS Control Unit ECU A1729017601

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3412336

BMW X3 E83 Battery Cable Negative Wiring 3412336

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9247130

BMW F11 Touring Antenna Aerial Diversity Amplifier Unit 868 MHZ 9247130

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9227217

BMW F12 Aerial Amplifier AMP Antenna Supression Filter Module 9227217

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0035050

Volkswagen Golf R Mk7 Bluetooth CD SD Reader Sat Nav Radio Head Unit 5G0035050

€517.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971228L

VW Golf MK5 6 Audi A3 8P Positive Battery Terminal Cable 1K0971228L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9138969

BMW E60 LCI E61 LCI Electronic Driver Circuit Centre Console 9138969

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8A0937530

Audi A6 C6 Fuse Relay Box Module Unit Holder Bracket 8A0937530

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

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