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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Mercedes SLK R172 Sun Visor Wiring Harness Cable Loom A1725408605

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0971349AQ

Volkswagen VW Golf Mk6 Alternator Cable Wiring Harness Loom 1K0971349AQ

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5K7955559B

VW Volkswagen Caddy 2K Front Windscreen Rain Light Solar Sensor Unit 5K7955559B

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8R0907401J-1

Audi Q5 8R 3.0 TDI CCWA 240HP Quattro Engine ECU Kit Ignition + Key 8R0907401J

€237.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0907063GG

Audi A6 C7 A7 4G Onboard Supply BCM Body Control Module Unit ECU 4H0907063GG

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K5035225C

Audi A4 B8 Antenna Amplifier Diversity 8K5035225C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DH52-10C652-AC

Land Rover FREELANDER 2 L359 Battery Cable Wire DH52-10C652-AC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CH22-14633-CC

Land Rover Discovery 4 L319 Rear Door Wiring Loom Harness Left N/S CH22-14633-CC

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 4G8971085CH

Audi A7 4G Rear Bumper Wiring Harness Cable Sensor PDC Radar 4G8971085CH

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 85E959354

Skoda Octavia IV Impact Crash Sensor Module Front Left Right N/O/S 85E959354

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7607685

Mini One R56 LCI R60 N16 98HP Petrol Engine ECU DME 7607685 Control Unit Manual

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. XUC000201A

Range Rover Sport L320 Aerial Antenna Amplifier Module XUC000201A

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9244422

BMW X5 E70 LCI Front Bumper PDC Loom Cables Wiring Set 9244422

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0065454601

Energy Distributor Mercedes W204 OM656 Power Control Unit Module A0065454601

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3426159

BMW X3 E83 2.5i 3.0i M54 Wiring Loom Harness Engine Automatic Gearbox 3426159

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9264568-1

BMW E82 LCI Body Control Module Unit PL2RR JBBFE IIIR L1 9264568

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. M8D2-12A692-A

Land Range Rover Evoque L551 Engine Control Module ECU Bracket M8D2-12A692-A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9267465

BMW F01 Body Control Module ECU Junction Box V5 PL6 JBBFE III Lear 9267465

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6862375

BMW F15 F16 Steering Column Control Module ECU Bracket Mount Housing 6862375

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0915429F

Audi TT FV A1 8X A3 8V A4 B8 A5 8T A6 C7 Battery Trim Cover Cap Black 8K0915429F

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4E0035785D

Audi A4 B8 A5 8T MMI Multimedia Interface Control Unit Module 4E0035785D

€99.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V4945092-2

Audi A3 S3 8V Rear Tail Light Wiring Harness Cable Plug Right O/S 8V4945092

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9194064

Board Monitor BMW X5 X6 E70 E71 Sat Nav System Screen 8,8" 9194064

€108.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6958526

BMW 5 X5 X6 Series E60 E61 E70 E71 F07 F10 F11 Seat Adjustment Switch Right O/S

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V0919813B

Volkswagen Golf Mk7 GTI Card Reader Toll DSRC Module 8V0919813B

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1310208

Ford Transit Mk7 AUX Connector Adapter Port Socket 3S7T-19A164-AB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6401500434-1

Mercedes W169 A160 CDI OM640.942 82HP Engine Unit ECU Kit A6401500434 Automatic

€227.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6824116

BMW 3 F30 LCI 330e Hybrid High Voltage Battery Wiring Inverter Cable 6824116

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2475400600

Mercedes W177 Rear Axle Wheel RPM Speed Right Sensor Wire Harness A2475400600

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9297787

BMW F10 F20 F30 Battery For Telematics Control Unit Module 9297787

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0959435A

Volkswagen Golf CD1 Keyless Go Module ECU Entry Control Unit 5Q0959435A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8321087-1

BMW E60 Front Seat Height Adjustment Electric Motor Actuator 0390203234 8321087

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0907063CD

Audi A8L 4H Onboard Comfort Control Module CCM Unit ECU 4H0907063CD

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0907440A

Audi A4 B8 Q7 4L GPS Vehicle Tracking Location Control Unit Module 8K0907440A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CK52-14K016-AA

Range Rover L405 448DT Diesel Fuse Box Cover Lid Panel Top CK52-14K016-AA

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CPLA-19E906-AA

Land Rover Range Rover L405 Air Quality Sensor CPLA-19E906-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2469000012-1

Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9367807

BMW X5 F15 Battery B+ Engine Compartment Positive Terminal Point 9367807

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1529782

Ford Transit Mk7 Roof Antenna Aerial Antenna Base Wiring Loom 1529782

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0971687BF

Audi A8 D4 Door Wiring Loom Harness Rear Left Right N/O/S 4H0971687BF

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9367376

Control Unit BMW F01 F02 F07 F10 F11 CAS4 Key Reading Module 9367376

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3R0907274

Seat Exeo TPMS Tyre Pressure Monitor Module Control Unit ECU 3R0907274

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5E9035577B

Skoda Octavia 5E Radio Aerial Antenna Amplifier Module 5E9035577B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8P0907115AP-3

Audi S3 8P 2.0 TFSI CDLA 265HP Engine ECU Kit BCM Module Key 8P0907115AP Manual

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6817762

Mini F54 F55 F56 F57 Head-Up Display HUD Dashboard Dash Screen 6817762

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. R8A2-12B684-VAB

Range Rover L551 Engine Control Unit ECU 204HP 2.0 Diesel Hybrid R8A2-12B684-VAB

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8T0971369AC

Audi A4 B8 A5 8T Front Lumbar Support Harness Wiring Cable Right O/S 8T0971369AC

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6951629

BMW Z4 X3 E83 E85 Mini R50 DVD GPS Navigation System Computer 6951629

€99.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. ET76-14B321-AF

Ford Transit Courier Air Module Control Unit Module Driver Side ET76-14B321-AF

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6838609

Antenna Amplifier BMW F40 Aeral Diversity Control Unit FM DAB Live Dash 6838609

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4145400130

Mercedes-Benz Vaneo W414 Cable Starter Line Positive Line Battery A4145400130

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9T16-14B296-AA

Ford Transit Connect Yaw Sensor ESP Rotation Rate Control Unit 9T16-14B296-AA

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. K8D2-14B750-AC

Land Range Rover Evoque L551 Front Bumper Crash Impact Sensor K8D2-14B750-AC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9176194

Mini Cooper R57 R58 R59 Radio Aerial Antenna Amplifier FM 9176194

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CC1T-10300-BD

Ford Transit Mk8 2.2 TDCi Diesel Engine Alternator Generator Unit CC1T-10300-BD

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0941824A

Audi A1 A4 A6 A7 A8 Fuse Box Connector Socket Module Unit 8K0941824A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F1971693G

Audi A6 C6 Rear Door Wiring Harness Cable Loom Left Right N/O/S 4F1971693G

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0971029AP

Audi A4 B8 Door Wiring Harness Loom Cable Front Driver's Side 8K0971029AP

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8648846

BMW F39 F45 F48 LCI Mini Cooper F60 Negative Earth Ground Cable 8648846

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L906018JG-1

Audi A5 8T 2.0 TDI CGLC 177HP Diesel Engine Control ECU Kit 03L906018JG Manual

€137.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8N0959643A

Audi TT 8J Crash Impact Sensor Unit Air Module 8K0955557C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2Q0915343A

Volkswagen Polo Mk6 AW Battery Holder Cover Surround Mount 2Q0915343A

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W0959595N

Audi A4 B9 Door Module Rear Right Left N/O/S Control Unit 8W0959595N

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2518703390

Mercedes W251 Rear Passengers Entertainment Control Unit A2518703390

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8512415-12

Mini Cooper SD R60 ALL4 N47N 143HP Engine Control Unit ECU DDE 8512415 Automatic

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4148200526

Mercedes Vaneo W414 Front Left Right Door N/O/S Control Unit Module A4148200526

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8570059

BMW X3 F25 Engine Wiring Start/Stop Manual Gearbox Loom Cable 18d N47 8570059

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059008826

Mercedes C205 SAM Module Rear Comfort Control Unit ECU A2059008826

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5B610A6

BMW F70 F78 F74 Gran Coupé Interior Light Control Module Right O/S 5B610A6

€156.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W0907144E

Audi S5 F5 Steering Rack Active Steering Module Control Unit ECU 8W0907144E

€222.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5A4A7C0

BMW G20 LCI Wiring Loom Harness Cable Front Left N/S 5A4A7C0

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CJ32-10E889-AG

Range Rover Evoque L538 Onboard Multimedia Display Screen CJ32-10E889-AG

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8602973

Battery Cable BMW F45 Mini F54 F56 B48 Alternator Starter Wiring 8602973

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DS7T-14F239-CH

Ford Mondeo MK5 Dashboard Multimedia Display Screen Radio Map DS7T-14F239-CH

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049005908-3

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

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055402594

Mercedes W205 Hybrid Power Electronic Drive Control Unit Wiring A2055402594

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6900583-1

BMW 7 Series E65 E66 Cable Wire Power Distribution Box 6900583

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6926962

BMW E60 E61 Front Seat Adjustment Switch Right O/S 6926962 6930048

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7534921-1

BMW 3 X3 Z4 Series E46 E83 E85 Engine Control Unit Box Bottom Part 7534921

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9290357

BMW F10 F20 F22 F30 Navigation Head Unit Harman Sat Nav Unit High 9290357

€522.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1545445-2

Ford Kuga MK1 Rear Tail Light Inner Left N/S Cable Wire Harness 8V41-13A603-AD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5G4971694K

Volkswagen Golf Mk7 Rear Door Wiring Loom Harness Cable Right O/S 5G4971694K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BJ32-14B006-AA

Range Rover Evoque L538 Crash Impact Sensor Unit Front Rear BJ32-14B006-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4519003401

Smart Fortwo C451 Cabrio Door Control Unit Module ECU A4519003401

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0941824D

Audi Volkswagen Fuse Box Connector Socket Module Unit 8K0941824D

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9221462

BMW F01 Front Seat Control Unit Module ECU Left Temic 9221462

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2219005503

Mercedes W221 Air Suspension Module Regulation Control Unit A2219005503

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LX6A-9D370-CB

VW Volkswagen Amarok Mk2 Fuel Injection Pump Control Unit Module LX6A-9D370-CB

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9231178

BMW F22 F30 F80 M3 F32 Radio Antenna Amplifier AM FM 9231178

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0959792D

AUDI S5 8T Door Control Module ECU Front Left N/S 8K0959792D

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W0906093F

A4 B9 35 TFSI Fuel Pump Sender Control Relay Module Unit ECU 8W0906093F

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9286953

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 9286953

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0005468502

Battery Cover Mercedes W205 W212 Battery Positive Pole Cover Red A0005468502

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9330951

Control Unit BMW F01 F07 F10 F11 F25 Air Module ECU Unit Continental 9330951

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BH22-14632-CA

Land Rover Discovery 4 Door Wiring Loom Harness Rear Right O/S BH22-14632-CA

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4K0971227A

Audi A6 C8 4K Battery Positive Wiring Harness Voltage Converter 4K0971227A

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DZ7Y-M200S

VW Golf Mk6 Radio Head Unit 7" Screen Android 12 CarPlay 8+128GB DZ7Y-M200S

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P5035225H

Porsche Cayenne 92A Anetenna Aerial Amplifier Module Left N/S 7P5035225H

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

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