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 F20 F21 F22 Telematics Bluetooth Control Module Unit TCB ECE GPS 9389658

€51.95

Free delivery: Nov 12 – 13

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Part no. 51871158

Vauxhall Combo Fiat Doblo Positive Battery Cable Lead Wire 51871158

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K9035225A-1

Audi A4 S4 B8 Antenna Amplifier Radio Aerial AM/FM 8K9035225A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Land Rover Discovery Sport L550 Tailgate Opening Sensor Lower FK72-14E110-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8917002110

Toyota Auris E15 SR Air Control Module Unit Controller ECU 89170-02110

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14A005-DRA

Ford Fiesta MK7 Fuse Box Relay Junction Box Panel Cover Trim C1BT-14A005-DRA

€23.95

Free delivery: Nov 12 – 13

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Part no. 8P3945095C-2

Audi A3 8P Tailgate Lamp Light Boot Lid Left N/S Harness Loom Wire 8P3945095C

€23.95

Free delivery: Nov 12 – 13

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Part no. A6519007500-27

Mercedes SLK R172 250CDI OM651.980 Engine Control ECU Kit A6519007500 Automatic

€313.95

Free delivery: Nov 12 – 13

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Part no. 8S0971230AC

Audi TTS FV Alternator Wire Wiring Cable Loom Harness 8S0971230AC

€32.95

Free delivery: Nov 12 – 13

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Part no. 8T0971030AG

Audi S5 8T RS5 Door Wire Wiring Cable Loom Harness Front Passenger 8T0971030AG

€23.95

Free delivery: Nov 12 – 13

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Part no. 4G8971035AS

Audi A7 4G Front Door Harness Wiring Loom Cable Driver's Side 4G8971035AS

€47.95

Free delivery: Nov 12 – 13

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Part no. 8V4971693H

Audi A3 8V Rear Door Wiring Harness Cable Left Right N/O/S 8V4971693H

€23.95

Free delivery: Nov 12 – 13

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Part no. 83A035063B

Audi A1 GB Q3 F3 Multimedia Head Unit Display Control Module 83A035063B

€579.95

Free delivery: Nov 12 – 13

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Part no. 5WA959436M

Audi A3 8Y Keyless Control Module Unit ECU 5WA959436M

€23.95

Free delivery: Nov 12 – 13

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Part no. 81A971036H

Audi Q2 GA Door Wiring Loom Harness Front Passenger Side 81A971036H

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DS71-12B684-UE

Ford Mondeo Mk5 Engine Control Module ECU 150HP 2.0 Diesel DS71-12B684-UE

€37.95

Free delivery: Nov 12 – 13

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Part no. 9181453

BMW 1 X4 X5 Series F20 F21 F25 F26 Antenna Aerial Diversity Trap Circuit 9181453

€23.95

Free delivery: Nov 12 – 13

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Part no. KPLA-14M726-FA

Range Rover Sport L494 Hybrid 48V Fuse Junction Box Unit KPLA-14M726-FA

€104.95

Free delivery: Nov 12 – 13

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Part no. 9389068

Fuse Box BMW F20 F21 F30 F31 F34 Power Distribution Front 9389068

€23.95

Free delivery: Nov 12 – 13

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Part no. 9363780

BMW F45 Seat Wiring Loom Harness Cable Rear Left N/S 9363780

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0941003C-2

Audi A6 C6 Headlamp Headlight Front Left N/S Harness Wire Loom Cable 4F0941003C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8585933

Wiring Loom Harness BMW F20 F30 F36 LCI B47 Engine Gearbox Module 8585933

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99161032100

Porsche 718 Boxster 982 Battery Fuse Box Control Unit Socket Plug 99161032100

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A02362

BMW G20 G26 G28 F44 F90 PDC Parking Sensor Control Module Unit 5A02362

€32.95

Free delivery: Nov 12 – 13

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Part no. BV6N-14B533-BJ

Ford Focus Mk3 Front Door Control Module Door Lock Left N/S BV6N-14B533-BJ

€23.95

Free delivery: Nov 12 – 13

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Part no. 6922262

BMW 7 Series E65 E66 E67 Control Unit Door Front Passenger Side 6922262

€23.95

Free delivery: Nov 12 – 13

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Part no. 6921980

BMW 7 Series E65 E66 Control Unit Door Rear Passenger Side

€23.95

Free delivery: Nov 12 – 13

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Part no. 7P6035670N

Volkswagen Touareg 7P5 Sat Nav Head Unit Control MMI3G 7P6035670N

€569.95

Free delivery: Nov 12 – 13

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Part no. C1BT-14B560-BCF

Ford Fiesta Mk7 Centre Console Wiring Loom Harness Cable C1BT-14B560-BCF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2081426

Ford Kuga C520 Fuse Box Relay Box 1.5 EcoBoost M8MA Petrol GV4T-14014-BRC

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. SXE-1350S

Alpine 13cm 5.25" Car Door Speakers 2 Way 250W Set SXE-1350S

€28.95

Free delivery: Nov 12 – 13

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Part no. A2078202810

Mercedes W207 Convertible Anti Theft Roof ITS TPS Sensor Module Unit A2078202810

€37.95

Free delivery: Nov 12 – 13

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Part no. EJN500092

Land Rover Range Rover Sport L320 Speaker Cover Grille Front Right O/S EJN500092

€28.95

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Part no. A2469008610

Mercedes W176 Stereo Audio Radio CD Head Unit Control Panel A2469008610

€42.95

Free delivery: Nov 12 – 13

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Part no. FK72-13404-AG-2

Land Rover Discovery Sport L550 Tail Light Wiring Rear Right O/S FK72-13404-AG

€23.95

Free delivery: Nov 12 – 13

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Part no. 6G9T-14K131-BB

Land Rover Discovery Sport L550 Fuse Relay Box 6G9T-14K131-BB

€32.95

Free delivery: Nov 12 – 13

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Part no. 02M911023P-1

Audi Volkswagen Seat Skoda Starter Motor Engine 2.0 TDI Diesel 17972N

€28.95

Free delivery: Nov 12 – 13

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Part no. LR040145

Land Rover Freelander 2 L359 Wire Wiring Harness Parking System DH5215K867BC

€37.95

Free delivery: Nov 12 – 13

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Part no. A2465400308-1

Mercedes W176 W246 OM651 Alternator Cable Battery Prefuse Box A2465400308

€23.95

Free delivery: Nov 12 – 13

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Part no. 420919275-BBL

Audi A4 A5 Q7 Rear Bumper PDC Parking Sensor Black Metallic - Y9B 420919275

€23.95

Free delivery: Nov 12 – 13

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Part no. BJ32-14D617-AB

Range Rover Evoque L538 Door Module Unit ECU Front Left N/S BJ32-14D617-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. 8V21-12A650-KF

Ford Fiesta Mk7 Engine Control Module ECU 1.6 Diesel 90HP Manual 8V21-12A650-KF

€32.95

Free delivery: Nov 12 – 13

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Part no. 3C8907801E

VW Volkswagen Passat B6 CC Parking Handbrake Control Module Unit ECU 3C8907801E

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9288373

BMW X5 F15 Door Storage Pocket Compartment Fiber Optic Front Left N/S 9288373

€23.95

Free delivery: Nov 12 – 13

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Part no. 8482370

BMW G20 G30 Engine Wiring Loom Harness Cable B48B20A 8482370

€56.95

Free delivery: Nov 12 – 13

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Part no. A1648209226

Mercedes ML W164 Keyless Go Module ECU Door Lock Control Unit A1648209226

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V4971035DQ

Audi A3 8V Front Door Wiring Harness Cable Driver Side 8V4971035DQ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0941824

Audi S6 C6 Wirie Cable Fuse Box Holder Support 4F0941824

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5E0919605H

Skoda Octavia 5E Sat Navi Stereo Radio Display Audio Head Unit Player 5E0919605H

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7060552

BMW 3 Series E90 E91 Bowden Cable Hood Mechanism 7060552

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9V4T-14B321-AA

Ford Kuga MK1 Air Module Control Unit ECU SRS 9V4T-14B321-AA

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009063822

Alternator Generator Mercedes W176 W246 Diesel Engine Bosch 175A A0009063822

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6809471

Mini F56 Front Door Wiring Harness Cable Driver Side 6809471

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669006405

Mercedes W166 Control Unit Bracket Boot Trunk Module Unit Mount A1669006405

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0907443

Porsche Cayenne S 92A Engine Control Module Securing Bar Cover 7P0907443

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9314229

BMW F20 Front Electronic Module Body Control Unit FEM ECU 9314229

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K8D2-9E729-EB

Land Rover Discovery Sport L550 Radar Sensor Bracket Mount Support K8D2-9E729-EB

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G4971694R

Volkswagen Golf Mk7 Rear Door Wiring Loom Harness Cable Right O/S 5G4971694R

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906022MK-2

Audi A4 B8 Engine Control Unit ECU Kit 2.0 TDI Diesel CAGA Autoamtic 03L906022MK

€246.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-14A073-BC

Range Rover Sport L494 Dashboard Fuse Box Control Unit Module HPLA-14A073-BC

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6971121P

Volkswagen Touareg 7L Front Door Wiring Loom Harness Driver's Side 7L6971121P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A0FAD6

BMW i4 G26 Hybrid Electric Earth Ground Cable Negative Battery Lead 5A0FAD6

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9353743

Junction Box Terminal BMW G11 G12 G30 Power Battery Distribution 9353743

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 012911023F

Volkswagen Touareg 7L Starter Motor Engine Diesel Bosch 012911023F

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 46868440

Vauxhall Movano C Gearbox Wiring Harness Loom 2.2 Diesel Manual 52233139

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9234606

BMW X5 E70 X6 E71 Camera Based System Control Unit Module 9234606

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G0035222A

Volkswagen Golf Mk7 Media In Port Socket Connection Adapter 5G0035222A 5Q0035736

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698207226

Door Module Mercedes W169 W245 Front Right O/S Control Unit A1698207226

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2044400738

Mercedes C204 Electric Wire Harness Loom Cable Connector A2044400738

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0937545L

Audi A8 D4 Fuse Relay Battery Junction Box Connector Housing 4H0937545L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0937501

Audi A4 B8 A5 8T A6 C7 Q5 8R Fuse Box Relay Module Connector Plug 8K0937501

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BV6T-14E073-AAC

Ford Focus Mk3 Door Wiring Harness Loom Front Left N/S Side BV6T-14E073-AAC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8645325-1

BMW F20 F30 F32 F33 F34 B38 B48 Petrol Engine Alternator Generator 180A 8645325

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6907568A

VW Volkswagen Touareg 7P Lane Change Assist Control Unit Module 7P6907568A

€127.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2027310

Ford Kuga Mk3 Galaxy Mk4 Battery Holder Bracket Clamp Mounting 2027310

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CK52-14B687-CD

Range Rover L405 Rear Seat Heated Wiring Harness Cable Right O/S CK52-14B687-CD

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5243080

Ford Transit Custom Tourneo Mk8 Rear Speaker Audio Unit DB5T-18808-HB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2464701771

Toyota Corolla E12 Wiring Cable Harness Loom Socket Plug 2464701771

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 80A906093

Audi Q5 FY Fuel Pump Control Unit Module ECU Diesel Kuhnke 80A906093

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907289C

Audi A5 8T BCM Body Comfort Convenience Module Unit ECU 8K0907289C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0915181L

Audi Q3 8U Q3 S3 VW Scirocco Mk3 Battery Wiring Wire Negative Cable 1K0915181L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8971029EM

Audi A7 4G Front Door Harness Wiring Loom Cable Driver's Side 4G8971029EM

€42.95

Free delivery: Nov 12 – 13

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Part no. 5A3BC98-1

BMW G20 LCI Rear Outer Light Lamp Side Panel Wiring Cable Right O/S 5A3BC98

€23.95

Free delivery: Nov 12 – 13

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Part no. 8R0035223G

Speaker Amplifier Audi A4 B8 A5 8T Stereo Radio Sound System Amp 8R0035223G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971227B

Audi A4 S4 8W A5 S5 F5 Battery Wiring Harness Rear Distributor 8W0971227B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139005613

Mercedes W213 Front Door Module Right O/S Control Unit A2139005613

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1179061800-1

Mercedes CLA C117 Rear Tail Light Lamp Wiring Harness Right O/S A1179061700

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2T1T14B321AB

Ford Transit Connect Air Module Control Unit ECU 2T1T-14B321-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9389258

Mini F55 Rear Door Wiring Loom Harness Cable Left Right N/O/S 9359266

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775404307-1

Fuse Box Mercedes C118 W177 Engine Compartment Relay Box Module A1775404307

€113.95

Free delivery: Nov 12 – 13

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Part no. 8P0035503M

Audi A3 8P Bluetooth Antenna Module Control Unit 8P0035503M

€23.95

Free delivery: Nov 12 – 13

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Part no. 8P4971036J

Audi A3 8P Front Left N/S Door Harness Cable Loom 8P4971036J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6996955

BMW G05 G20 G21 Plus Line B+ Jump Start Terminal Power Distribution 6996955

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W0971238

Audi A4 S4 8W A5 S5 F5 Battery Terminal Earth Ground Cable Wire 8W0971238

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0035670H

Audi RSQ3 8U Multimedia Navigation Radio Player Head Unit MMI 3G+ 8U0035670H

€655.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971227D

Audi S5 F5 Positive Battery Wiring Harness Cable 3.0 TDI Diesel 8W0971227D

€80.95

Free delivery: Nov 12 – 13

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Part no. 4M5T-14A124-AA

Ford Focus Mk2 C-Max Body Control Module Fuse Box Bracket Holder 4M5T-14A124-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. LR028515-2

Land Rover Range Rover L322 LED Rear Light Lamp Left N/S Wire Harness LR028515

€23.95

Free delivery: Nov 12 – 13

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Part no. A6395450203

Mercedes-Benz Vito W639 Fuse Box Cover Cap Trim A6395450203

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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