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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Range Rover L322 Rear Bumper Parking Sensor Wiring Loom Harness AH42-15B484-AD

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8570238

BMW E87 E90 F20 F30 Engine Starter Motor Actuator N47 N47N Diesel 8570238

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1664407807

Mercedes ML W166 Seat Backrest Wiring Harness Front Left Right N/O/S A1664407807

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8379941-1

BMW X5 Series E53 Interior Roof Alarm Sensor Ultra Sonic Module 8379941

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971104A

Audi A4 B9 Rear Bumper Cable PDC Parking Sensor Wiring Harness Loom 8W0971104A

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7395738

BMW F33 F83 Battery Holder Tray Bracket Carrier 7395738

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C5945096H-1

VW Volkswagen Passat B6 Saloon Rear Lamp Wiring Cable Right O/S 3C5945096H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8577625

BMW F20 F21 116d ed N47N Engine Control Unit ECU DDE 8577625 Manual Transmission

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-13192-AE

Land Rover Discovery Sport L550 Rear Tail Light Lamp Right O/S FK72-13192-AE

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959754Q

Audi S5 8T Remote Ignition Key Control Unit Smart Remote 8T0959754Q

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7570488-2

Mini Cooper 2 R50 R52 R53 W10 1.6 Petrol Engine Starter Motor Remy 7570488

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0972575

Audi A3 8V 8P A4 S4 B8 A8 D4 Wire Harness Cable Loom Wiring 4E0972575

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6915576

BMW Mini Cooper R50 R53 Cable Door Right Wiring Harness Loom 6915575 6944249

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9340971

BMW F21 F22 Cable Harness Driver's Side Door Loom Electrical Wiring 9340971

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9381105

BMW F20 Fuse Box Control Unit SAM Module Relay 9381105

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048702426

Mercedes W204 Door Module Rear Left N/S Control Unit Module A2048702426

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8A2-14516-DB-1

Range Rover Velar L560 Positive Battery Wire Cable M8A2-14516-DB

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519003701-1

Mercedes W212 OM651.924 E220CDI 170HP Engine ECU Kit + Key + Lock A6519003701

€194.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0907468D

Audi A4 B8 A5 8T Gateway Diagnostic Interface Control Unit Module ECU 8T0907468D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2105460

Ford Fiesta Mk8 Engine Starter Motor 1.0 Petrol H1BT-11000-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009063805

Mercedes W205 W222 Three Phase Alternator Generator 14V 250A A0009063805

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715400506

Mercedes SLK R171 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1715400506

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14K138-DDD

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0035061B

Audi A8 D3 Radio Multimedia Audio Stereo Head Unit 4E0035061B

€336.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906019AS-2

Audi Q5 8R 2.0 TDI 170HP Quattro Engine Control Module ECU 03L906019AS Automatic

€427.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8617549-2

BMW F12 Engine Control Unit ECU 559HP 4.4 Petrol S63B44B M6 S63N 8617549

€664.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AB39-18C815-GH

Ford Ranger Mk6 Radio Head Unit CD Stereo Control Module AB39-18C815-GH

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. VIBE-SLICK6-1

Genuine VIBE Slick S6 Coaxial Stereo Car Audio Speaker Tweeter 6,5" 240W

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH3210239BA

Land Rover Range Sport L320 3.0 D Alternator Mount Support Bracket AH3210239BA

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JB3T-14F642-BA

Ford Ranger T6 Wildtrak Smart Data Link Module Control Unit JB3T-14F642-BA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CK52-14A583-AD

Range Rover L405 Boot Lid Tailgate Wiring Loom Harness Cable CK52-14A583-AD

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B971030BA

Porsche Macan 95B Front Door Wiring Loom Harness Passenger Side O/S 95B971030BA

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-14A578-AD

Land Rover Discovery L550 Row Wiring Loom Harness Cable Rear 3rd FK72-14A578-AD

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DH52-14240-AAC

Land Rover L359 Door Wiring Loom Harness Cable Rear Right O/S DH52-14240-AAC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H32-19C164-AA

Range Rover Sport L320 Sound Amplifier Control Unit Module 8H32-19C164-AA

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9383697

BMW F07 LCI F20 F21 F30 Footwell Light Control Module FRM III ECU Unit 9383697

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7H42-19C063-CA

Range Rover L322 Rear Centre Console AUX Socket Outlet Module 7H42-19C063-CA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009060922

Alternator Mercedes W212 W447 X253 C238 Petrol M274 150A Bosch A0009060922

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3419515

BMW E83 LCI Valvetronic Starter Cable Wire Loom 3419515

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1ET-14D624-RB

Ford Focus Mk3 Door Card Wiring Loom Cable Right O/S F1ET-14D624-RB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139003317A

Mercedes C118 V177 W213 Diesel OM654 Automatic Transmission Module A2139003317

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049007111

Mercedes W204 Navigation CD Player Radio Stereo Sat Nav Head Unit A2049007111

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JX63-14N030-AB

Range Rover Velar L560 Rear Boot Trunk Fuse Box Relay Module JX63-14N030-AB

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959754AD

Audi A5 S5 8T Remote Ignition Key Fob Control Unit Keyless 8K0959754AD

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2622562

BMW G20 G21 G23 G26 G42 G80 Subwoofer Bass Speaker Under Seat Right O/S 2622562

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8E2-14D374-AD

Land Rover Range Rover Evoque L551 Air Module ECU Diagnostic Unit M8E2-14D374-AD

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129008818

Keyless Go Module Mercedes W207 W212 W218 ECU Door Lock Control Unit A2129008818

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T-18D815-GF

Ford Transit Custom Radio Stereo Audio USB Head Unit Panel BK2T-18D815-GF

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6974246

BMW MINI Cooper Clubman R55 R55N LCI Retaining Bracket Safety Belt Rear Right

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6079001800-1

Mercedes W176 A180 CDI OM607.951 109HP Engine ECU Kit A6079001800 Automatic

€398.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1732742-1

Ford Fiesta Mk7 Engine Starter Motor Unit 1.25 Petrol 1732742

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8617549-1

BMW F12 Engine Control Unit ECU 559HP 4.4 Petrol S63B44B M6 S63N 8617549

€664.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V5T-14A584-GEH

Ford Fiesta Mk7 Rear Door Wiring Harness Cable Left N/S 8V5T-14A584-GEH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B907324B

Porsche Cayenne 92A Tyre Pressure Control Sensor Bracket Mount Holder 95B907324B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8971085A

Audi A7 4G Rear Bumper Parking Sensor Wiring Loom Harness Wire 4G8971085A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH22-19H440-AG

Land Rover Discovery 4 L319 Keyless Entry Control Module AH22-19H440-AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T-14B476-CT

Ford Transit Custom MK8 BCM Body Control Module Unit BK2T-14B476-CT

€175.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9270590-1

BMW F20 F21 F22 Windscreen Rain Sensor Solar Fogging 9270590

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A90877

BMW F74 Gran Coupé Battery Plus Positive Cable Wiring Harness 5A90877

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971036A

Audi A4 B8 Door Wiring Harness Cable Loom Front Right O/S 8K0971036B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A06B93

BMW F74 Gran Coupe A/C Air Conditioning Wiring Loom Harness Adapter 5A06B93

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6H52-13W029-AC-2

Land Rover Freelander L359 Headlight Harness Loom Wire Right O/S 6H52-13W029-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-19G255-BA

Range Rover L405 TV Amplifier Aerial Receiver Unit BJ32-19G255-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971693B-1

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. 4G8959252A

Audi A7 4G8 Sportback Rear Spoiler Adjustment Tailgate Control Unit 4G8959252A

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0907285A

Audi A6 C8 Relay Holder Support Bracket Mount Carrier 4K0907285A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9186664

BMW 3 Series E92 Front Right O/S Driver Side Door Wire Wiring Loom 9186664

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8707750

BMW F20 F21 F22 F23 F87 M2 Body Domain Controller BDC Module FEM 8707750

€279.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6957528

BMW 5 6 E60 E63 LCI Body Control Module ECU Control Unit KBM Basis 6957528

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8584279-1

BMW F22 F30 F31 218d 318d Diesel N47N 143HP Engine ECU Kit DDE 8584279 Key FEM

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6962581

BMW E87 Cables Set Wiring PDC Parking Sensor Front Bumper 6962581

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-14A073-KA

Range Rover Sport L494 Engine Bay Fuse Box Control Unit HPLA-14A073-KA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7952991

BMW U06 Active Tourer Power Management Control Unit Power Supply Module 7952991

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8A2-14B673-AC

Range Rover Velar L560 Tailgate Hands Free Open Control Module M8A2-14B673-AC

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2649512

Ford Transit Connect Mk2 Battery Starter Motor Wire Harness Cable KV6T-14300-AAG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698203285

Mercedes A B Class W169 W245 Door Control Module Right Rear O/S A1698203285

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F9945094B-2

Audi A6 C6 A6 4F Rear Light Lamp Tailgate Right O/S Inner Wire Loom 4F9945094B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7S7T-18C939-DA

Ford Mondeo Mk4 Radio Mp3 Player 6 CD Changer Sony Head Unit 7S7T-18C939-DA

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055402594

Mercedes W205 Hybrid Power Electronic Drive Control Unit Wiring A2055402594

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2475407800

Mercedes W177 Fuse Box Relay Cover Lid Control Unit Bracket Trim A2475407800

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK3T-14F238-YB

Ford Transit Mk8 Jumper Wiring Harness Cable Loom BK3T-14F238-YB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6886186

BMW F20 F21 F22 F30 F31 Hydro Unit DSC ICM Fastening Control Module ECU 6886186

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8A2-14N168-AB

Range Rover Velar L560 Battery To Converter Wiring Harness Cable M8A2-14N168-AB

€222.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0971036G

Audi RS Q3 8U Front Door Wiring Harness Loom Wire Passenger Side 8U0971036G

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. OEP-42CX

OE Audio 4" Two-Way Coaxial Speaker OEP-42CX Set

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0951253

VW Volkswagen Audi Seat Relay 449 Unit Module 4 Pins 1K0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8BFV-RA859-AA

RA Active Exhaust Outlet Bluetooth Control Module Unit 8BFV-RA859-AA

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J8035382A-1

Audi TT 8J TT S Line Rear Door Bose Subwoofer Loud Speaker Left N/S 8J8035382A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5972175

Volkswagen Caddy 2K Rear Gate Tailgate Harness Wiring Adapter Cable 2K5972175

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6M2T-18808-AC

Jaguar XF X250 Door Sound Speaker Loudspeaker Front Rear Left Right 6M2T18808AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959595B

Audi A3 8V Rear Door Control Module Unit ECU Left Right N/O/S 5Q0959595B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T14A094BA

Ford Transit Mk8 Battery Fuse Box BK2T14A094BA

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 896610H250

Toyota Aygo B1 Engine ECU Control Module Unit 1.0 Petrol 67HP Manual 896610H250

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. G92C052011

Toyota Yaris P9 2 Engine ECU Module 1.3 VVT-i 100HP Petrol Manual G92C052011

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJG2822BB

Jaguar Xk8 X100 Trunk Boot Mounted Fusebox Fuse Box Module Unit 518798004

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B88F19

BMW F74 Gran Coupé B38N Petrol Power Control Unit Module PCU 5B88F19

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C5945094F-2

Volkswagen Passat B6 Rear Lamp Light Taillight Right O/S Wire Harness 3C5945094F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H903018L

Audi A6 C7 A7 4G S6 Alternator Generator 12V 180A 06H903018L

€118.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8510591-7

BMW X1 E84 2.0d N47 177HP sDrive Engine Control Unit ECU DDE 8510591 Manual

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

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