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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Hyundai H-1 Dashboard Panel Digital Clock Watch Unit 94520-4H0004X

€28.95

Free delivery: Nov 12 – 13

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Part no. 1828011

Ford Transit Mk8 USB AUX Port Socket Connection Media Adapter BK31-V044K62-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3N11-19N236-AA

Ford Focus Titanium Power Outlet Input Receptacle Socket 12V 10A 3N11-19N236-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2661501233

Engine Wiring Mercedes W169 W245 M266 Petrol Cable Loom Harness A2661501233

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2058200704

Sunroof Wiring Mercedes W205 X253 Panoramic Roof Motor Cable Harness A2058200704

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0903291

Audi A6 C6 3.0 TDI Suppression Condenser Noise Filter 4F0903291

€23.95

Free delivery: Nov 12 – 13

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Part no. 5K0962132B

Seat Ibiza V KJ1 Keyless Entry Amplifier Aerial Antenna Module Inner 5K0962132B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7808074-1

BMW E70 LCI F10 Alternator Generator Engine 180A Valeo N57 Diesel 7808074

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7582309-1

Mini R55 R56 R60 R61 Engine Starter Motor Mitsubishi 7645594

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DM5T-18B955-GB

Ford Kuga C520 Radio Navigation Multi Function Display Screen DM5T-18B955-GB

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9658447380

Citroën C4 Grand Picasso Fuse Box Cover Housing Bracket Holder 9658447380

€23.95

Free delivery: Nov 12 – 13

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Part no. 8Y0963554B

Volkswagen Golf 8 Rear Seat Couch Occupancy Sensor Unit 8Y0963554B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8714406

BMW F40 Front Door Electric Wire Harness Loom Passenger Side 8714406

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8647255

BMW F20 LCI F21 F22 Integrated Supply Control Module Unit 8647255

€23.95

Free delivery: Nov 12 – 13

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Part no. A2711502879-1

Mercedes W204 C200 M271.950 184HP Engine ECU Kit A2711502879 Ignition + Key Lock

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GX73-18808-BA

Jaguar XF X260 Front Right O/S Door Speaker Loudspeaker Unit GX73-18808-BA

€23.95

Free delivery: Nov 12 – 13

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Part no. DPLA-19C097-BA

Land Rover Discovery L550 Radio Antenna Amplifier Control Module DPLA-19C097-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X2311001AA

Jaguar XF X250 Diesel Engine Starter Motor 12V DENSO 8X2311001AA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-12C520-NAC

Range Rover L405 339HP Engine Control Unit ECU 4.4 Diesel 448DT HPLA-12C520-NAC

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJG2800CD

Jaguar XK8 X100 Engine Bay Small Fuse Box Fusebox LJG2800CD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139001418

Mercedes W213 Rear Door Control Module Unit Left N/S A2139001418

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 80A907159

Audi SQ5 FY Control Unit Module Active Sound Design 80A907159

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0959655D

Volkswagen Touareg 7P Air Module ECU Control Module Unit 7P0959655D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8574372

BMW F30 F32 330d 430d Diesel N57N Engine Control Unit ECU DDE 8574372 Automatic

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DS7T-18C847-AA

Ford Mondeo MK5 Aerial Antenna Amplifier ECU Amp Unit Module DS7T-18C847-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E1971227

Audi RS4 B7 Positive Battery Terminal Wiring Loom Lead 4.2 V8 8E1971227

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0907368B

Audi A3 8P Golf Mk6 Convenience Module ECU Bracket Mount Support 8P0907368B

€23.95

Free delivery: Nov 12 – 13

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Part no. A2229001814

Door Module Mercedes W205 X253 Rear Left N/S Control Unit A1698209126

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3413934-2

BMW X3 E83 Rear Bumper Wiring Loom PDC Harness 1452049

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HY32-14F012-AF

Range Rover Sport L494 Rear Tyre Pressure Control Module Unit HY32-14F012-AF

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2079011800

Mercedes W204 W207 Control Unit ECU Sensor Module Air SRS Bag A2079011800

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0953516A

Audi A3 RS3 8P Steering Column Upper Trim Shroud Cowl Black 8P0880225

€28.95

Free delivery: Nov 12 – 13

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Part no. 8678863-1

BMW F20 118i F30 318i LCI B38 136HP Engine Control KIT ECU DME 8678863 Manual

€474.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. XBC501763LZN-2

Range Rover Sport L320 Headlight Bi-Xenon Wiring Front Right O/S XBC501763LZN

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9163149

BMW E60 E61 Door Wiring Harness Loom Cable Rear Left Right N/O/S 9163149

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. PEO118811

Mazda 6 GJ Relay 4-Pin Electrical Unit Multi-Purpose Relay Black ACVN51212

€23.95

Free delivery: Nov 12 – 13

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Part no. YQH100970

Land Rover Discovery 2 L318 Fuse Box Unit Upper Trim Cover Cap 1H2Z-14A003-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. 9873892

BMW G20 G21 G22 G29 Air Module Control Unit ECU ACSM5 9873892

€94.95

Free delivery: Nov 12 – 13

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Part no. 1394006080

Fiat Ducato PM Sensor Wiring Cable Adapter 2.2 Multijet Diesel 1394006080

€28.95

Free delivery: Nov 12 – 13

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Part no. 7L5035741F

Porsche Cayenne 9PA Telephone Phone Control Unit Module 7L5035741F

€28.95

Free delivery: Nov 12 – 13

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Part no. 7634057

BMW 3 4 Series F30 F31 F32 N20 Engine Gearbox Module Wiring Loom Harness

€42.95

Free delivery: Nov 12 – 13

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Part no. 06F906056ER-1

Skoda Octavia 1Z Engine Control ECU 150 HP 2.0 Petrol BVY Manual 06F906056ER

€75.95

Free delivery: Nov 12 – 13

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Part no. A2044409734-1

Mercedes C204 Front Bumper PDC Wiring Parking Sensor Loom Harness A2044409734

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7842202

BMW X5 E70 LCI Front Door Audio System Wire Harness Left Right N/O/S 7842202

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2319059900

Mercedes C253 Rear Bumper Switch Tailgate Opener Sensor Module A2319059900

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2302341

Ford Transit Connect Mk2 USB Port Wiring Harness Cable Loom KT1T-14D202-HB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0035061D

Audi A4 A5 A6 Q5 Q7 Radio Control Head Unit Harman Becker 4F0035061D

€232.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C2D23644

Jaguar XF X260 Rear Fuse Box Board Rear Electric Fusebox 2.0 Diesel C2D23644

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W1959592

Audi Q5 8R Door Module Front Left N/S Control Unit ECU Controller 8W1959592

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9389560

Aerial Trap Circuit BMW G30 X3 G01 Antenna Amplifier Module Control Unit 9389560

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0907530B

Volkswagen Golf Mk5 Audi A3 8P Gateway Control CAN Module Unit 1K0907530B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AM911023M-1

Volkswagen Audi Skoda Audi 1.6 TDI Diesel Engine Starter Module Motor 0AM911023M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 80A941823A

Audi Q5 FY Positive Battery Terminal Potential Distributor 80A941823A

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A6C4F8

BMW F74 Gran Coupé 48V Battery Positive Cover Trim Panel Cap 5A6C4F8

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 897410K061

Toyota Hilux ECU Tailgate Control Module 897410K061

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7612620

BMW F10 F20 F21 F87 M2 Protective Cap B+ Cover Top Panel 7612620

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971035E

Audi A5 8T Coupe Front Door Wiring Loom Harness Driver's Side 8T0971035E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8586568

BMW F20 F22 F23 Gearbox Transmission Module Harness Wiring Loom Cable 8586568

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2128206513

Mercedes W212 Seat Adjustment Wiring Harness Wire Front left N/S 2128206513

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6957762

BMW 5 6 Series E60 E61 E63 Passenger Side Door Airbag Control Module 6957762

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9136725

BMW Mini Cooper One R55 R56 Multifuse B Battery Power Distributor 9136725

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6807324

BMW G30 G31 M5 F90 Positive Battery Cable Underfloor Wiring Loom 6807324

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DPLA-14D375-CB

Range Rover Sport L494 Interior Light Wiring Harness Cable DPLA-14D375-CB

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8648856

BMW F39 F45 F48 F49 Mini Cooper F60 Earth Ground Cable 8648856

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-19A391-AA

Land Rover Discovery Sport L550 Hands Free Speak Microphone FK72-19A391-AA

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-14D619-BD

Range Rover Sport L494 Rear Door Module Control Unit Left N/S HPLA-14D619-BD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9857620

Door Wiring Mini F60 Cable Loom Rear Left Right N/O/S Harness 9857620

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7PP962132

Porsche Cayenne 92A Keyless Entry Antenna Module Control Unit 7PP962132

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A74B11

BMW G60 G68 G70 U06 X2 U10 X1 U11 Tailgate Lift Control Module ECU 5A74B11

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6842256

BMW X2 F39 F45 X1 F48 Active Gran Tourer Air Module ECU Control Unit 6842256

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A5D069

BMW U06 X1 U11 Electric Auxiliary Heater Wiring Harness Ground Cable 5A5D069

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9385026-1

BMW F01 F07 LCI F10 F11 F25 Air Module Control Unit ECU 9385026

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. UM4667730

Mazda 6 GJ NAIS Relay Electrical Unit Module 4 Pin 12V Black UM46-67-730 Set x2

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AM21-13A603-AF-2

Ford S-Max Rear Tail Light Inner Wiring Harness Cable Left N/S AM21-13A603-AF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8781451-1

BMW F21 Body Control Module V11 Max FEM ECU Control 2.0 Diesel Manual 8781451

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BF6N-18C815-HG

Land Rover Range Rover Evoque Radio CD Player Head Unit BF6N-18C815-HG

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9383709

BMW X5 F15 X6 F16 M Sport Fuse Box Body Control Module BCM ECU Unit 9383709

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7948147

BMW F40 F44 Rear Seat Bench Occupancy Mat Control Unit Sensor 7948147

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3413934-1

BMW X3 E83 Rear Bumper Wiring Loom PDC Harness 3413934

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0907530BF

VW Polo Mk6 Seat Ibiza Mk5 Central Gateway Control Unit Relay ECU 3Q0907530BF

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E1971035AH

Audi A4 B7 Front Door Wiring Harness Cable Loom Driver Side 8E1971035AH

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4D0907131

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 12V 4D09907131

€23.95

Free delivery: Nov 12 – 13

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Part no. 8XA941005A-2

Audi A1 8X Front Headlamp Wiring Loom Harness Cable Left N/S 8XA941005A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P4971036F

Audi A3 8P Front Passenger Door Wiring Left N/S Harness Loom Cable 8P4971036F

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6421508100-3

Mercedes V251 642.950 4-Matic 224HP Engine Control ECU A6421508100 Automatic

€279.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06F906056ER

Skoda Octavia 1Z Engine Control ECU 150 HP 2.0 Petrol BVY Manual 06F906056ER Kit

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14K138-BDG

Ford Fiesta Mk7 Wire Wiring Harness Loom Passenger Front Left N/S C1BT14K138BDG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971250AE

Volkswagen Scirocco Mk3 Negative Battery Terminal Cable Wiring 1K0971250AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9339192

BMW F45 F46 Battery Cable Positive Wire Lead Terminal 9339192

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JB3T-14B321-FA

Ford Ranger Wildtrak Mk6 SRS Air Module ECU Control Unit Module JB3T-14B321-FA

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6925642

BMW 5 6 Series E60 E61 E63 Reserve Fuse Carrier Housing 6925642

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14633-BC

Range Rover L538 Door Wiring Loom Harness Cable Rear Right O/S BJ32-14633-BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH4N-15607-AD

Range Rover Sport L320 Keyless Entry Module Control Unit AH4N-15607-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH42-18C941-AF

Land Range Rover Sport L319 L320 Audio Module Stereo Unit AH42-18C941-AF

€23.95

Free delivery: Nov 12 – 13

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Part no. BH22-14A614-CA

Land Rover Discovery 4 L319 Ambient Air Temperature Sensor Wiring BH22-14A614-CA

€51.95

Free delivery: Nov 12 – 13

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Part no. A4519060800

Smart Fortwo C451 Electrical Centre Base Module Unit Footwell A4519060800

€308.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B92741

BMW F74 X2 U10 Music Navi CD Radio Player Head Multimedia Unit 5B92741

€512.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJD4145BA

Jaguar XK8 X100 XKR Dashboard Dash Tweeter Speaker Audio Unit LJD4145BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8Y0907159C

Audi A3 S3 8Y Impact Sound Gateway Control Module System Unit 8Y0907159C

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

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