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 3 7 Series F30 LCI G11 Hybrid Battery Charging Connector Plug Unit 8605862

€32.95

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Part no. 1K0907383G

Volkswagen Touran 5N Towbar Towing Control Unit Trailer Detection 1K0907383G

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7558911

BMW 1 Series E81 E82 E87N E88 NOx Cable Wiring Petrol 7558911 12517558911

€23.95

Free delivery: Nov 12 – 13

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Part no. 83A907159

Audi Q3 RSQ3 F3 Body Sound Impact Control Module ECU 83A907159

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8642705-1

Mini Cooper F56 B38 136HP Engine Control ECU DME Kit 8642705 Automatic

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9361589

BMW 2 F45 Active Tourer Door Wiring Loom Harness Cable Driver's Side 9361600

€32.95

Free delivery: Nov 12 – 13

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Part no. 4H0907412

Audi A8 D4 Ambient Lighting Control Module Unit ECU 4H0907412

€23.95

Free delivery: Nov 12 – 13

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Part no. 1167294

Mini Cooper One R50 R52 Fresh Air Recirculating Actuator 1167294 6NN007626

€23.95

Free delivery: Nov 12 – 13

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Part no. 7641661-2

BMW F10 F20 F30 Petrol N20 Wiring Harness Motor Sensor System 2 Module

€32.95

Free delivery: Nov 12 – 13

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Part no. 4H0907705J

Porsche Cayenne 92A Steering Column Control Module Unit 4H0907705J

€28.95

Free delivery: Nov 12 – 13

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Part no. 8514577

BMW X3 F25 Diesel N47N Engine Gearbox Wiring Loom Harness 8514577

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129060005-1

Mercedes W212 Fuse Box Module Rear Relay Electric Control Unit SAM A2129060005

€23.95

Free delivery: Nov 12 – 13

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Part no. 0CQ907554E

Rear Diff Module Seat Leon Cupra 5F VW Golf Mk7 4motion Control Unit 0CQ907554E

€113.95

Free delivery: Nov 12 – 13

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Part no. R8D2-14A614-CA

Range Rover Evoque L551 Steering Gear Wiring Loom Harness Cable R8D2-14A614-CA

€42.95

Free delivery: Nov 12 – 13

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Part no. 9283429

BMW E90 E91 E92 E93 LCI Radio CD Player Multimedia Head Unit 9283429

€569.95

Free delivery: Nov 12 – 13

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Part no. 382327

Ultrasonic Module Mini Countryman Paceman R60 R61 Alarm System Sensor 0382327

€23.95

Free delivery: Nov 12 – 13

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Part no. KT1T-14D068-DD-1

Ford Transit Connect Mk2 Engine Fuse Relay Box 1.5 Diesel KT1T-14D068-DD

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715400406

Mercedes SLK R171 Window Lifter Lift Mechanism Cable Wiring Harness A1715400406

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0971068F

VW Volkswagen Tiguan 5N AD BT Exhaust Flap Wire Harness Loom 5Q0971068F

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6807332

BMW G30 530e 530eX B48X Hybrid Battery Wiring Positive Under Floor Cable 6807332

€37.95

Free delivery: Nov 12 – 13

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Part no. 8V0919129B

Volkswagen Golf Mk7 Audi A3 8V TV Tuner ECU Control Module 8V0919129B

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129004901

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129004901

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0951253

Skoda Karoq Mk1 Octavia Mk3 Audi A1 8X Q3 F3 4 Pin Power Relay 3Q0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0907283

Audi A6 C6 FL Tire Pressure Control Module 4F0907283

€23.95

Free delivery: Nov 12 – 13

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Part no. 8R0867749A

Porsche Macan 95B Battery Holder Strap Mounting Bracket Clamp 8R0867749A

€28.95

Free delivery: Nov 12 – 13

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Part no. 5N0035554D

Volkswagen Touareg 7P Media Interface Cable MMI Apple iPod 30 Pin 5N0035554D

€23.95

Free delivery: Nov 12 – 13

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Part no. 9894913-4

BMW F20 F21 LCI F22 M140i M240i B58 340HP Engine ECU Kit DME 9894913 FEM + Key

€512.95

Free delivery: Nov 12 – 13

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Part no. 7L0971537

Porsche Cayenne 9PA Negative Battery Terminal Cable Wiring Loom 7L0971537

€28.95

Free delivery: Nov 12 – 13

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Part no. 02Z911024L

VW Volkswagen Golf Mk7 1.6 TDI CLHA Diesel Engine Starter Motor 02Z911024L

€23.95

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Part no. 9279391

BMW 5 G11 G30 M5 Door Crash Sensor Front 9279391

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BV21-12A650-ACD-1

Ford Fiesta Mk7 1.4 TDCI 70HP KVJA Engine Control ECU BV21-12A650-ACD Manual

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4N0955557A

Audi A6 C8 A7 C8 Door Crash Impact Sensor Front Left N/S Side 4N0955557A

€23.95

Free delivery: Nov 12 – 13

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Part no. 02Z911024H-1

Seat Ibiza IV VW Polo 6R Fabia 5J 1.2 TDI Diesel Engine Starter Motor 02Z911024H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BV6T-14297-AAG

Ford Focus Mk3 Windscreen Heated Washer Jet Wiring Harness Cable BV6T-14297-AAG

€32.95

Free delivery: Nov 12 – 13

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Part no. 8583423

Mini D R60 R61 ALL4 N47N 112HP Engine ECU Control Unit DDE 8583423 Manual

€94.95

Free delivery: Nov 12 – 13

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Part no. 03L906019AG-1

Audi A6 C6 2.0 TDI CAHA 170HP Engine ECU Kit 03L906019AG Ignition + Key Manual

€189.95

Free delivery: Nov 12 – 13

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Part no. 7336450

BMW F07 GT LCI Trunk Boot Lid Emblem Logo BMW Badge Cap Trim Cover 7336450

€23.95

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Part no. AV21-12A650-EE

Ford Fiesta Mk7 Engine Control ECU 1.4 Petrol SPJC 97HP Manual AV21-12A650-EE

€70.95

Free delivery: Nov 12 – 13

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Part no. AG9N-10723-AC

Land Rover Freelander 2 L359 HV Battery Tray Holder Bracket AG9N-10723-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. JB3T-10C652-AA

Ford Ranger Wildtrak Mk6 Battery Terminal Fusible Link JB3T-10C652-AA

€61.95

Free delivery: Nov 12 – 13

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Part no. 99764512806

Porsche Boxster Cayman 987 CD Stereo Player Radio Head Unit 99764512806

€99.95

Free delivery: Nov 10 – 13

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Part no. A4518201259-2

Smart C451 Front Headlamp Headlight Wiring Front Right O/S Side A4518201259

€23.95

Free delivery: Nov 12 – 13

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Part no. 7P6035552

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Left N/S 7P6035552

€23.95

Free delivery: Nov 12 – 13

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Part no. 5A898F2

BMW F70 F74 F78 Parking Brake Wiring Harness Cable Rear 5A898F2

€42.95

Free delivery: Nov 12 – 13

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Part no. 8662843-1

Mini Cooper F55 B38 136HP Engine Module ECU DME Kit 8662843 Manual

€664.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9267467

BMW F13 Body Control Module Electronic Junction Box JBBFE 3 PL6 V3 9267467

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9367700

BMW X6 F16 PDC Bumper Park Assist Wiring Harness Loom 9367700

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5882771

Porsche Cayenne 92A Front Seat Pump Ventilblock Unit 7P5882771

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0971349B

Porsche Cayenne 92A Minus Negative Wiring Loom Harness Cable 7P0971349B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. N8B2-19L300-PF

Land Rover Defender L663 Sat Nav Multimedia Head Unit N8B2-19L300-PF

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8571036

Mini F54 F55 F56 F57 Wiring Harness Engine Supply Module 8571036

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9207515

BMW X1 E84 Battery Cable Wire Lead Positive 9207515 61129207515

€56.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. A2036901430

Mercedes C CLC Class CL203 W203 Rear SAM Unit Fuse Box Trim Cover A2036901430

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8573257

BMW F20 F30 F32 120d 320d 420d N47N 184HP Engine Module ECU DDE 8573257 Manual

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1398342080

Citroën Relay III Alarm Buzzer Wiring Harness Cable Plug 1398342080

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9361601

BMW Active Tourer F45 Door Wiring Loom Harness Cable Rear Right O/S 9361577

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6Q0951253

Volkswagen Polo Mk4 Passat B7 Additional Brake Light Relay 4 Pin Black 6Q0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0907461A

Audi Q5 8R Comfort Module Unit Bracket Holder Mount Carrier 8R0907461A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9190107

BMW Z4 E89 Battery B+ Engine Compartment Terminal Point 9190107

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1742905

Ford Focus Mk3 Earth Cable Strap Wire Ground Cable 1.6 Petrol AV6T-14324-DAF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 09D927750LJ

Porsche Cayenne 955 Automatic Gearbox Transmission Module 3.0 TDI 09D927750LJ

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. L1TT19K351AA

Ford Puma ST CF7 Aerial Antenna Amplifier Control Module Unit L1TT-19K351-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 897410D020

Toyota Yaris XP10 Central Door Locking Module Control Unit ECU 897410D020

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA959436B

Audi A3 8Y Volkswagen Golf Mk8 Keyless Entry Module Control Unit ECU 5WA959436B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E971067-1

Audi A1 S1 8X VW Golf 5G Adapter Wire Engine Wiring Harness 1.4 TFSI 04E971067

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469004313

Gearbox Module Mercedes W176 Automatic Transmission Unit ECU A2469004313

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0C8927755C

VW Touareg 7P Automatic Transmission Module Control Unit ECU 3.0 TDI 0C8927755C

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1845084

Ford Transit Mk8 Engine Wire Harness Loom Cable Wiring BK3T-14B446-EB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-14C676-AA

Land Rover L550 Jaguar XE F-Pace Air Module Crash Impact Sensor FK72-14C676-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V4971036Q

Audi A3 8V Sportback Front Passenger's Door Loom Wiring Harness 8V4971036H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EB3T-14A003-A

Ford Ranger Mk6 Battery Positive Terminal Clamp Circuit Breaker EB3T-14A003-A

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8966102E51

Toyota Auris E15 Engine Control Unit ECU Kit + Key 1.6 1ZRFE Manual 8966102E51

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7622995

Cable Alternator Starter BMW F20 F21 F30 F31 N55 Battery Wiring Harness 7622995

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9286365

BMW X1 X2 Series F39 F48 Antenne AM Antenna Amplifier Cable 9286365

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EL2T-19A391-AAW-1

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465452840

Mercedes-Benz A B W176 W246 Control Module Housing Bracket Mount A2465452840

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K5945096D-2

Audi A4 B8 Saloon Rear Tail Light Lamp Wiring Harness Cable Right O/S 8K5945096D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KK72-12C520-FBB

Land Rover Discovery Sport L550 Engine Control Module ECU Unit KK72-12C520-FBB

€175.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0945093M-1

Audi Q3 8U Tail Light LED Lamp Wiring Loom Plug Rear Left N/S Outer 8U0945093M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8516739-7

Mini R60 Cooper SD ALL4 N47N 143HP Engine Control Unit ECU DDE 8516739 Automatic

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8513249-1

BMW X3 F25 Engine ECU Kit DDE CAS4 N47N 20dX 184HP Manual 8513249 Keys + Lock

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2188205061-1

Mercedes C218 Front Headlight Wiring Harness Cable Right O/S A2188205061

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V41-13A602-AD-2

Ford Kuga Mk1 Rear Tail Light Lamp Inner Right O/S Wire Cable 8V41-13A602-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9359248

BMW MINI Cooper One F55 Cable Harness Door Right O/S Loom Driver Side 9359246

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9136726

BMW Mini Cooper One R55 R56 Multifuse B Battery Power Distributor 9136726

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7953081

BMW X1 U11 Battery Cable Negative Terminal PHEV Earth Cable Wiring PHEV 7953081

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9260902

BMW E81 E82 Driver's Door Wiring Loom Harness Cables 9260902

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9281068

Antenna Receiver BMW F33 F83 M4 Convertible Aerial DAB Unit 9281068

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK21-13C148-AB

Ford Transit Custom Mk8 Headlight Control Module Unit BK21-13C148-AB

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0909605C

Volkswagen Golf Mk5 Air Module Control Module ECU 1K0909605C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AD927755BT

Porsche Cayenne 9PA Gearbox Control Unit Module Controller ECU 0AD927755BT

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9672467180

Citroën C4 Grand Picasso Front Door Wiring Harness Passenger Side 9672467180

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P7907115F-1

Audi A3 8P 1.8 TFSI BZB 160HP Engine Control Unit ECU 8P7907115F Manual

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DMX110BT

Kenwood DMX110BT 2DIN Car Radio Stereo USB Bluetooth Head Unit Module DMX110BT

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8643380

Mini F56 Engine Sensor Wiring Loom Harness Cable 2.0 Petrol B48A20M0 8643380

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9354758

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK Mid 9354758

€37.95

Free delivery: Nov 12 – 13

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Part no. 5Q0937615C

Audi A3 8V Fuse Relay Box Module Electrical Control Unit 5Q0937615C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X23-14B345-AA

Jaguar XF X250 Wheel Arch Crash Impact Sensor Left Right N/O/S 8X23-14B345-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8687030

Mini F55 F56 F60 Gearbox Transmission Control Unit Module EGS GA6F21AW 8687030

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

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