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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Ford Transit Custom OBD Data Link Diagnostic Module Control Unit GK2T-14F642-AB

€23.95

Free delivery: Sep 14 – 15

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Part no. CV6T-14014-RFG

Ford Kuga Mk2 Fuse Relay Box Control Module 2.0 TDCi Diesel CV6T-14014-RFG

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6395480174

Mercedes-Benz Vito W639 Fuse Box Cooling Outlet Pipe Air Duct A6395480174

€23.95

Free delivery: Sep 14 – 15

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Part no. 500553103080

Fiat Panda Mk2 Starter Motor +Line 1.1 Petrol 187 A1.000 Manual 500.553.103.080

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2613368

Ford Kuga Mk3 Battery Negative Minus Earth Cable Terminal LX6T-10C679-BG

€37.95

Free delivery: Sep 14 – 15

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Part no. 4E0971225F

Audi A8 D3 Battery Starter Alternator Positive Cable Wire Looom 4E0971225F

€23.95

Free delivery: Sep 14 – 15

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Part no. 8R0907364B

Audi Q5 8R A5 8T A4 B8 Active Suspension Module Damping Control Unit 8R0907364B

€42.95

Free delivery: Sep 14 – 15

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Part no. 420941824

Audi R8 42 Spyder Fuse Box Battery Terminal Cover Housing Clamp 420941824

€32.95

Free delivery: Sep 14 – 15

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Part no. 6805893

Mini F60 Countryman Door Wiring Harness Rear Left Right N/O/S 6805893

€37.95

Free delivery: Sep 14 – 15

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Part no. 9393659

BMW F13 Central Gateway Control Lear Module Unit ECU 9393659

€32.95

Free delivery: Sep 14 – 15

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Part no. A1664409735

Mercedes ML W166 Battery Cable Alternator Starter Motor Wiring A1664409735

€32.95

Free delivery: Sep 14 – 15

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Part no. 3456478

Mini R58 Door Module Harness Wiring Loom Cable Set Driver's Side 3456478

€23.95

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Part no. 7L5035507G

Porsche Cayenne 955 9PA Audio Antenna Amplifier 7L5035507G

€23.95

Free delivery: Sep 14 – 15

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Part no. A1775404910

Cable Wiring Mercedes W177 W247 Fuel Pump Sending Unit Plug Socket A1775404910

€47.95

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Part no. 7210576-2

BMW F06 F12 Rear Lamp Tail Light Wiring Harness Plug Socket Right O/S 7210576

€23.95

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Part no. 5E7035577

Skoda Octavia Mk4 NX Aerial Antenna Amplifier Control Unit 5E7035577

€32.95

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Part no. 7527610-13

MINI One R50 W10 90HP Engine ECU Control Unit Module DME 7527610 Automatic

€28.95

Free delivery: Sep 14 – 15

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Part no. A1729058300

Mercedes SLK R172 Pedestrian Protection Impact Crash Sensor Module A1729058300

€32.95

Free delivery: Sep 14 – 15

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Part no. 5N0971104AC

Volkswagen Tiguan 5N Rear Bumper PDC Parking Sensor Wiring Harness 5N0971104AC

€47.95

Free delivery: Sep 14 – 15

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Part no. AMR5633

Land Rover Freelander L314 Burglar Bonnet Alarm Sensor Switch Anti Theft AMR5633

€23.95

Free delivery: Sep 14 – 15

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Part no. F1B1-12A650-ZC

Ford Fiesta St Mk7 Engine Control ECU 182HP 1.6 Petrol F1B1-12A650-ZC Manual

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1779069505

Mercedes C118 W177 H247 X243 Centre Console Ambient Light Wiring A1779069505

€61.95

Free delivery: Sep 14 – 15

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Part no. 5M0035724

Volkswagen VW Golf Mk6 1K Aux Socket Port Switch 5M0035724

€23.95

Free delivery: Sep 14 – 15

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Part no. A2059004433

Mercedes W205 Head Unit Radio CD Player Audio Sat Nav Multimedia A2059004433

€237.95

Free delivery: Sep 14 – 15

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Part no. 0C8927749AN

Porsche Cayenne Turbo 92a Automatic Gearbox Control Module ECU Unit 0C8927749AN

€341.95

Free delivery: Sep 14 – 15

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Part no. 03L903023K-1

Audi A3 8P A4 A5 B8 Q5 Alternator Generator Diesel Electrical Unit 03L903023K

€56.95

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Part no. 8377601

BMW E38 Door Windows Control Unit Module ECU ZB PMBT LOW 8377601

€23.95

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Part no. 1744987

BMW E39 Battery Clamp Fuse Cable Positive 1744987

€23.95

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Part no. 9268336

BMW MINI Clubman R55 R55N LCI Cable Adapter Lead Sensor Side Airbag 9207117

€23.95

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Part no. 03L906018AC-1

Audi A4 B8 A5 8T 2.0 TDI CJCA 143HP Engine Control ECU Kit 03L906018AC Manual

€132.95

Free delivery: Sep 14 – 15

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Part no. 7852129

Alternator BMW F90 M5 F91 M8 S63M Petrol Engine Generator 250A Valeo 7852129

€189.95

Free delivery: Sep 14 – 15

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Part no. A2539009309

Mercedes C253 W293 Rain And Light Sensor Control Unit Module ECU A2539009309

€66.95

Free delivery: Sep 14 – 15

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Part no. 9202014

BMW F10 F11 X5 E70 F13 Windscreen Rain Light Solar Sensor Control Unit 9202014

€23.95

Free delivery: Sep 14 – 15

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Part no. 8W6971035AN

Audi A5 F5 Front Door Wiring Harness Cable Driver's Side 8W6971035R

€56.95

Free delivery: Sep 14 – 15

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Part no. 9387626

Mini F54 F55 F56 F57 F60 Windshield Rain Light Solar Sensor 9387626

€23.95

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Part no. 7831436

Alternator BMW M3 E46 Z3M E36 Petrol S54 Generator Valeo 120A 7831436 7830791

€108.95

Free delivery: Sep 14 – 15

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Part no. 6956939-1

Changer Unit BMW E63 E64 6-disc Compact CD Head Player 6956939

€47.95

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Part no. 6854028

BMW F06 F10 F11 F12 F13 ICM Control Unit Module Air Module ECU 6854028

€123.95

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Part no. A2075403332

Convertible Cable Mercedes A207 C207 Roof Rail Wiring Harness A2075403332

€32.95

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Part no. LR093066

Range Rover Sport L494 Glow Plug Wiring Right O/S 3.0 SDV6 Diesel 4R8Q-12A378-BH

€28.95

Free delivery: Sep 14 – 15

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Part no. A2118203042

Mercedes E-Class W211 S211 Front Right Door O/S Window Lifter Motor Regulator

€23.95

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Part no. 5Q0907530C

Audi A3 8V Central Gateway Control Unit Relay Module ECU 5Q0907530C

€23.95

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Part no. AV6T-14K131-AC

Ford Focus Mk3 Fuse Relay Box Board Housing AV6T-14K131-AC

€23.95

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Part no. 9365304

BMW F10 F20 F23 F30 Bluetooth Teleservices GPS Telematics Control Module 9365304

€28.95

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Part no. AH22-14K011-AB

Land Rover Discovery 4 L319 Radiator Wiring Harness Cable AH22-14K011-AB

€23.95

Free delivery: Sep 14 – 15

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Part no. A2059009643

Mercedes W205 Telematics Bluetooth Module Control Unit ECU A2059009643

€51.95

Free delivery: Sep 14 – 15

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Part no. 9307421

Camera Control Unit BMW F20 F21 F30 F31 KaFAS 2 Camera Module ECU 9307421

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L906012Q-2

Volkswagen Crafter 2.0 TDI CKTB 109HP Engine Module ECU Kit 03L906012Q Manual

€393.95

Free delivery: Sep 14 – 15

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Part no. 9226367

BMW F10 F11 Radio Multimedia Sat Nav Central Head Unit Module 9226367

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2049000308

Mercedes C204 Radio Multimedia CD Player Head Unit A2049000308

€165.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P5971771A

Porsche Cayenne 92A Automatic Gearbox Wiring Loom Harness Cable 7P5971771A

€28.95

Free delivery: Sep 14 – 15

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Part no. 5A86B86

BMW F40 F44 Body Control Module Body Domain Controller Unit BDC ECU 5A86B86

€104.95

Free delivery: Sep 14 – 15

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Part no. LR002139

Land Rover Freelander L359 Sunroof Sliding Roof Drive Motor 6H52-F53508-AC

€113.95

Free delivery: Sep 14 – 15

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Part no. YWC500550

Range Rover Velar L560 Parking Distance Aid PDC Control Unit Module YWC500550

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469008819-2

Radio Head Unit Mercedes W176 W246 Audio 20 Media Player Navigation A2469008819

€265.95

Free delivery: Sep 14 – 15

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Part no. A0009002218

Mercedes C253 Fuel Pump Module Control Unit ECU A0009002218

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2055408542

Mercedes W205 Front Passenger Door Wiring Harness Cable A2055408542

€80.95

Free delivery: Sep 14 – 15

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Part no. AS7T-14B321-AC

Ford Mondeo Mk4 Air Control Module ECU Restraint Sensor Unit AS7T-14B321-AC

€70.95

Free delivery: Sep 14 – 15

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Part no. 3AF035552E

VW Volkswagen Passat B7 Radio Aerial Antenna Amplifier Right O/S 3AF035552E

€23.95

Free delivery: Sep 14 – 15

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Part no. 7210580-2

BMW F06 F12 F13 Rear Tailgate Trunk Lid Boot Lamp Light Wiring Right O/S 7210580

€23.95

Free delivery: Sep 14 – 15

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Part no. 5A7A0E5

Mini F65 F66 BMW F70 F74 Engine Wiring Harness Valvetronic Servomotor 5A7A0E5

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9261614-2

PDC Sensor BMW F20 F21 F22 Rear Bumper Ultrasonic Glacier Silver SET x4 9261614

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5N0971369K

VW Tiguan 5N Front Seat Backrest Adjustment Wiring Harness Left 5N0971369K

€28.95

Free delivery: Sep 14 – 15

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Part no. 03C906016FR

Audi A1 8X 1.4 TFSI CAXA 122HP Engine Control Unit ECU 03C906016FR Manual

€94.95

Free delivery: Sep 14 – 15

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Part no. BV6N-14B532-BJ

Ford Focus Mk3 Rear Door Control Module Left Right N/O/S BV6N-14B532-BJ

€23.95

Free delivery: Sep 14 – 15

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Part no. 7621063

BMW X3 F25 X4 F26 Earth Ground Cable Line Strap Battery Lead 7621063

€23.95

Free delivery: Sep 14 – 15

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Part no. A0005400864

Mercedes C300h W205 Hybrid Negative Battery Ground Earth Cable A0005400864

€23.95

Free delivery: Sep 14 – 15

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Part no. 8E0972112A

Skoda Yeti 5L Rear Bumper PDC Parking Sensor Wiring Loom Harness 8E0972112A

€32.95

Free delivery: Sep 14 – 15

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Part no. 4E0907383H

Audi A8 D3 Towbar Trailer Hitch Control Module Trailer Detection ECU 4E0907383H

€94.95

Free delivery: Sep 14 – 15

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Part no. 5Q1937084C

Audi Q2 GA Module BCM Body Control Unit Module ECU 5Q1937084C

€108.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2079059702

Mercedes-Benz W207 A207 Radio Aerial Antenna Amplifier Module Unit Right O/S

€23.95

Free delivery: Sep 14 – 15

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Part no. FK72-15K602-BA

Land Rover Discovery L550 Radio Remote Control Receiver 434 MHz FK72-15K602-BA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9380999

BMW I01 IO1 LCI B+ Distributor Bracket Holder Mounting Base 9380999

€23.95

Free delivery: Sep 14 – 15

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Part no. BJ32-14F667-AH

Range Rover Evoque L538 Dashboard Display Screen Multifunction BJ32-14F667-AH

€89.95

Free delivery: Sep 14 – 15

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Part no. 241268711R

Door Wiring Renault Master 3 Rear Sliding Cable Harness 241268711R

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8J0945096G-2

Audi TT 8J Rear Tail Lamp Light Wiring Harness Plug Right O/S 8J0945096G

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2135405044

Mercedes W213 Door Wiring Loom Harness Cable Front Driver's Side A2135405044

€42.95

Free delivery: Sep 14 – 15

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Part no. A2048200104

Sun Roof Wiring Mercedes W204 Panoramic Roof Motors Drive Harness A2048200104

€23.95

Free delivery: Sep 14 – 15

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Part no. 8R0035464A

Audi Q5 8R Amplifier AMP Booster Mount Bracket 8R0035464A

€28.95

Free delivery: Sep 14 – 15

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Part no. 8740048

BMW G11 G30 G31 G32 SCR Control Module AdBlue Controller ECU Diesel 8740048

€32.95

Free delivery: Sep 14 – 15

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Part no. 1Q0971557F

Volkswagen Eos 1F Front Door Wiring Loom Driver Side 1Q0971557F

€32.95

Free delivery: Sep 14 – 15

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Part no. 6937668

BMW X5 Series E53 Fuse Box Label Trim Cover Panel Sticker 6937668

€23.95

Free delivery: Sep 14 – 15

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Part no. 7G92-15C670-AD

Land Rover Freelander 2 L359 Sunroof Actuator Wiring Loom Cable 7G92-15C670-AD

€28.95

Free delivery: Sep 14 – 15

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Part no. LR025607-1

Land Rover Freelander 2 L359 Rear Tail Light Left N/S Harness Wire LR025607

€56.95

Free delivery: Sep 14 – 15

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Part no. 8K0941031D-2

Audi A4 B8 Headlight Headlamp Wiring Harness Cable Plug Left N/S 8K0941031D

€23.95

Free delivery: Sep 14 – 15

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Part no. A2049005908-4

Mercedes W204 Satelite Navigation CD Player Radio Sat Nav Head Unit A2049005908

€132.95

Free delivery: Sep 14 – 15

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Part no. 4M0959792H

Audi A5 F5 Door Module Control Unit ECU Front Passenger Side 4M0959792H

€42.95

Free delivery: Sep 14 – 15

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Part no. DM5T-15K857-BFC

Ford C-Max Mk2 Centre Console Wiring Loom Harness Cable DM5T-15K857-BFC

€28.95

Free delivery: Sep 14 – 15

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Part no. 9317092

Mini One F55 F56 Cable Electric Automatic Hold Brake Handbrake 9317092

€23.95

Free delivery: Sep 14 – 15

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Part no. 1K0951253A-1

Volkswagen Audi Seat Skoda Glow Plug Relay Unit 4 Pin Black 460 1K0951253A SET

€23.95

Free delivery: Sep 14 – 15

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Part no. 8W0971228BH-1

Audi A4 B9 A5 F5 Starter Motor Battery Cable Wiring Harness 8W0971228BH

€189.95

Free delivery: Sep 14 – 15

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Part no. 3456421

Mini Roadster R59 Aerial Roof Antenna Base Module 3456421

€23.95

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Part no. 3450286

BMW X3 E83 LCI N47 Earth Cable Flow Electric Battery Negative 3450286

€23.95

Free delivery: Sep 14 – 15

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Part no. 5M5T14B192AA

Ford Transit Custom Mk8 Relay 4-Pin Black 12V 20A 5M5T-14B192-AA

€23.95

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Part no. A2218700992

Mercedes W221 Rear Seat Bench Module Control Unit Controller A2218700992

€23.95

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Part no. 8708257

BMW F20 F21 F22 F30 F31 LCI Head Unit Sat Nav Radio Media Navigation 8708257

€621.95

Free delivery: Sep 14 – 15

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Part no. 420035223C

Audi R8 42 Spyder Audio Amplifier System Unit Control Unit Module 420035223C

€417.95

Free delivery: Sep 14 – 15

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Part no. A1715409606

Mercedes R171 Wiring Cable Harness Front Passenger Door Wiring Loom A1715409606

€42.95

Free delivery: Sep 14 – 15

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Part no. 9389600

BMW Gran Turismo G32 Radio Aerial Antenna Amplifier AM/FM 9389600

€28.95

Free delivery: Sep 14 – 15

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