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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BMW Z4 E85 Roadster Starter Earth Ground Wire Cable 2.0 Petrol 7524715

€47.95

Free delivery: Nov 12 – 13

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Part no. 4H0959754K

Audi A4 B8 A5 8T A6 C7 A7 4G Remote Key Fob Module 4H0959754K

€42.95

Free delivery: Nov 12 – 13

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Part no. 4H22-14301-EA

Land Rover Discovery 3 L319 Negative Battery Cable Wiring Loom 4H22-14301-EA

€28.95

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Part no. A2229004618

Mercedes C205 Keyless Go Easy Entry Control Module Unit A2229004618

€23.95

Free delivery: Nov 12 – 13

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Part no. 7E0971794A-1

Volkswagen Transporter T5 Positive Battery Cable Wire 2.0 TDi CAAA 7E0971794A

€23.95

Free delivery: Nov 12 – 13

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Part no. 8506373

BMW X3 Series E83 LCI 1.8d N47 Engine Control Unit ECU Module DDE 8506373 Manual

€227.95

Free delivery: Nov 12 – 13

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Part no. A2135406303

Mercedes W213 PDC Parking Sensor Wiring Loom Cable Rear Bumper A2135406303

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7839662

BMW E90 E92 E93 LCI Cable Alternator Starter Base B 7839662

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK3T-18D815-BE-1

Ford Transit Mk8 PhoneRadio Panel Media Head Unit Control Panel BK3T-18D815-BE

€23.95

Free delivery: Nov 12 – 13

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Part no. A0009053816

Mercedes C118 W117 Battery Cable Negative Terminal Wiring A0009053816

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479007708

Rain Sensor Mercedes C118 W177 W247 Front Windscreen Light Unit A2479007708

€23.95

Free delivery: Nov 12 – 13

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Part no. 4M1959592D

Audi A6 C8 A7 4K Door Module Control Unit Front Passenger Side 4M1959592D

€23.95

Free delivery: Nov 12 – 13

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Part no. A6549061400

Starter Motor Mercedes W213 S213 W238 OM654 Diesel Engine Actuator A6549061400

€56.95

Free delivery: Nov 12 – 13

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Part no. 6906598

Mini Cooper One R50 R52 R53 JCW Fuse Relay Electrical Box Housing 6906598

€23.95

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Part no. 8T0907468AH

Audi A4 Allroad Avant A5 S5 Q5 RS5 Diagnosis Inteface Gateway Module 8T0907468AH

€32.95

Free delivery: Nov 12 – 13

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Part no. 6G9T-15K602-BB

Ford Focus Mk3 Antenna Amplifier Antenna Aerial Booster Unit 6G9T-15K602-BB

€23.95

Free delivery: Nov 12 – 13

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Part no. 8P0907357F

Audi S4 B7 Headlight Head Light Lamp Range Control Unit Module ECU 8P0907357F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2205404208

Mercedes W220 Rear PDC Parking Sensor Wiring Loom A2205404208

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1644400937

Mercedes ML W164 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1644400937

€56.95

Free delivery: Nov 12 – 13

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Part no. 9237082

BMW F10 F11 Cable Harness Door Driver's Side Right O/S Wiring 9237082

€23.95

Free delivery: Nov 12 – 13

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Part no. 8576341-10

BMW F20 F21 F30 F31 118d 318d 143HP N47N Engine ECU Kit DDE 8576341 Manual

€85.95

Free delivery: Nov 12 – 13

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Part no. A1779005104

Mercedes W177 Ambient Lighting Control Module Unit ECU A1779005104

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9464652

Mini Cooper One F57 Convertible Folding Top Control Unit Module CVM 7457434

€156.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9286236

BMW F30 Door Wiring Front Passenger Door Loom Cables Harness F31 9286236

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9251487

BMW E82 Footwell Light Module Control Unit ECU BASIS PL2 FRM3R 9251487

€189.95

Free delivery: Nov 12 – 13

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Part no. 8067512

BMW F10 F11 F30 F31 Alarm System Unit Security Basis Module 8067512

€28.95

Free delivery: Nov 12 – 13

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Part no. A0045423918

Yaw Sensor Mercedes ML W164 W221 W251 ESP Rotation Rate Unit Module A0045423918

€23.95

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Part no. 7E0971411

Volkswagen Transporter T5 2.0 TDI Oil Level Sensor Wiring Harness 7E0971411

€47.95

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Part no. A2469000012-4

Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012

€56.95

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Part no. A0025428819

Mercedes W176 W246 Relay Current 4 Pin 12V Hella A0025428819

€23.95

Free delivery: Nov 12 – 13

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Part no. 5G4971693T

Volkswagen VW Golf Mk7 Rear Door Wiring Harness Cable Loom Left N/S 5G4971693T

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907801H

Parking Brake Module Audi A6 C7 A7 4G A8 4H Handbrake Control Unit 4H0907801H

€23.95

Free delivery: Nov 12 – 13

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Part no. 1165905-1

BMW X5 Z3 Series 1 E36 E53 DSC Hydraulic Pump Compressor 1165905 1165904

€37.95

Free delivery: Nov 12 – 13

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Part no. 8510221-1

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 CAS3 + Key

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P3907357B-1

Audi A3 S3 8P Headlight Range Module Xenon Lamp Control Unit ECU 8P3907357B

€23.95

Free delivery: Nov 12 – 13

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Part no. 8373700

BMW E60 E63 E87 E90 E91 Relay Make Contact White Green 8373700

€23.95

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Part no. 8483814

BMW G20 Starter Wiring Battery Alternator Cable Harness Loom 8483814

€32.95

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Part no. 6882780

BMW X5 F15 X6 F16 Power Steering Column Control Unit Module 6882780

€23.95

Free delivery: Nov 12 – 13

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Part no. 7329074-1

BMW X3 E46 E63 E83 Mini R50 R53 Control Unit Xenon Light 7329074

€23.95

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Part no. 03L906022NN

Audi A4 B8 2.0 TDI 143HP CAGA Diesel Engine Control Unit ECU Module 03L906022NN

€94.95

Free delivery: Nov 12 – 13

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Part no. 5QS907338B

Audi A3 S3 8Y Headlight Head Light Lamp Range Control Unit Module ECU 5QS907338B

€94.95

Free delivery: Nov 12 – 13

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Part no. A6519007401-10

Mercedes A207 E250CDI Blue Efficiency 651911 204HP Engine Module ECU A6519007401

€89.95

Free delivery: Nov 12 – 13

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Part no. DPLA-70718-NV

Land Rover Range Rover Evoque L538 Telematics Control Module ECU DPLA-70718-NV

€23.95

Free delivery: Nov 12 – 13

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Part no. A2229000013

Door Module Mercedes W205 X253 Front Door Right O/S Control Unit A2229000013

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DT1T-15K866-BD

Ford Transit Connect Mk2 Parking Aid Module Control Unit DT1T-15K866-BD

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9134855-1

Battery Lead BMW E81 E87 Battery Cable Negative IBS 9134855 61129134855

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9157158

BMW E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9157158

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7512967

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. F1BT-18C815-LK

Ford Focus Mk3 Radio Stereo CD Player Head Unit F1BT-18C815-LK

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K9035225

Audi RS4 B8 Radio Aerial Antenna Amplifier AM/FM 8K9035225

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775401731

Mercedes W177 M282 Wiring Harness Battery Starter Motor Alternator A1775401731

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006007

Fuel Pump Module Mercedes W205 Control Unit ECU A0009006007

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7649390

BMW F45 i8 Mini F60 B38 B38X Hybrid Engine Alternator Generator 7649390

€336.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971693B

Audi A4 B8 Rear Door Card Harness Wiring Cable Loom Left Right N/O/S 8K0971693B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3G0962243D

Audi A4 B9 Rear Hatch Boot Lid Tailgate Opening Control Module Unit 3G0962243D

€23.95

Free delivery: Nov 12 – 13

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Part no. A2129001306

Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129001306

€51.95

Free delivery: Nov 12 – 13

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Part no. 9226365

BMW F10 F11 Head Unit Basis Media Navigation System Controller Headunit 9226365

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7520429

BMW 1 3 Series E87 E90 E91 Petrol N45 N46 118i 320i Flywheel Automatic 7520429

€30.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9163173

BMW E60 E61 LCi Right Left Rear Door Wiring Loom N/O/S 9120797

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959795G

Audi Q5 8R Rear Door Control Module Unit ECU Left Right N/O/S 8K0959795G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0907063R

Audi TT 8J BCM Body Control Module Unit ECU 8P0907063R

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8518424-1

BMW F20 F30 118d 318d N47N 143HP Engine Control Unit ECU DDE 8518424 Manual

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006102

Mercedes Vito W639 ECU Control Unit Crash Impact Module Air Module A0009006102

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B919606E

Porsche Macan 95B MMI Multimedia Navigation Control Head Unit 95B919606E

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009822923

Mercedes W177 W205 W247 Relay Fuse Unit Module 4 Pins Grey A0009822923

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L903023K

Audi A3 8V Volkswagen Golf Mk7 Alternator Generator 140A 1.6 2.0 TDI 04L903023K

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959792D

AUDI S5 8T Door Control Module ECU Front Left N/S 8K0959792D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7625998

BMW F20 F21 F22 F30 F31 F32 F33 Line Cable Power Distribution Module 7625998

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9874189

BMW 1 3 Series F20 F30 MINI F56 Control Unit Air Conditioning Module 9284440

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 899543000

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695402733

Mercedes W169 W245 Cable Loom Wiring Parking Sensors Rear A1695402733

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9340522

BMW 5 F10 LCI Central Gateway Module ECU Control Unit LEAR ZGW-02 4SK 9340522

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049006301-1

Mercedes W204 Rear SAM Module Fuse Box Control Unit A2049006301

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7850599

BMW F80 M3 F82 M4 Wheel Accelerator Sensor Cable Rear Axle Suspension 7850599

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6975044

Mini Cooper One R50 Cable Wiring Loom Door Front Left N/S 6962777

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0907280B

Audi A8 4E S8 D3 Power Supply Control Module Unit ECU 4E0907280B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1432237

BMW 3 5 7 Z3 Z4 X5 Series E38 E39 E46 E53 Climate Comprresor Supporting Bracket

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6929345

BMW 1 3 Series E82 E90 E92 Roof Antenna Aerial Shark Fin GPS Radio Tel 6929345

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2649001200

Mercedes W177 A35 AMG 306HP M260.920 4-Matic Engine ECU Control Unit A2649001200

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7534705

Mini R50 R52 Ground Battery Cable Alternator Starter 7534705

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2198200726

Door Module Mercedes C219 Front Right Door O/S Control Unit Module A2198200726

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6399003300

Mercedes Vito W639 Parking Module PDC Distance Control Unit Sensor A6399003300

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9360501

Mini F54 F55 F56 F57 F60 Rear Electric Power Distribution Fuse Box 9360501

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8576341-7

BMW F20 F21 F30 F31 116d 316d 116HP N47N ECU Kit DDE 8576341 + Key + FEM

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9218381-1

BMW F10 F20 F30 Steering Wheel Module Electronics Control Unit 9209427

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L903017E

Audi A4 B8 A5 8T Q5 8R Quattro Alternator Generator 2.0 TDI 03L903017

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H6035577T

VW Golf Mk8 Antenna Amplifier Rear Boot Lid Tailgate Right O/S 5H6035577T

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K1BT-14F642-AC

Ford Fiesta Mk8 OBD Port Smart Link Module ECU K1BT-14F642-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6866330

VDC Module BMW F20 F21 F30 F31 Rear Suspension Level Control Unit 6866330

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8625072

Wiring Loom Mini Cooper F55 F56 Harness Injection Valve Ignition 8625072

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9149673

BMW 5 Series E60 E61 LCI Alarm System Unit Ultra Sonic Module 9149673

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6885215

BMW F90 M5 F91 M8 G05 G11 G30 Steering Column Control Unit Module 6885215

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6851284

BMW X3 F25 ICM Control Unit Air Module SRS ECU 6851284

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0959793F

Audi A1 8X Front Door Module Unit Control Driver's Side Right O/S 8X0959793F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7522234

Mini R50 R52 Battery Cable Negative Wire 7522234 7519551

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6H52-14B321-AE

Land Rover Freelander 2 Air Module Control Unit ECU 6H52-14B321-AE

€23.95

Free delivery: Nov 12 – 13

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Part no. FK72-19C299-AA

Land Rover Evoque L538 Sat Nav Radio Display Screen 8 Inch FK72-19C299-AA

€28.95

Free delivery: Nov 12 – 13

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Part no. A1645400182

Mercedes ML W164 GL X164 Fuse Box Cover Trim Panel Cap A1645400182

€23.95

Free delivery: Nov 12 – 13

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Part no. 5H6035577B

VW Golf Mk8 Antenna Amplifier Rear Booster Boot Lid Tailgate Left N/S 5H6035577B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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