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 Mustang GT Mk6 BCM Body Control Module Alarm Keyless Entry HR3T-15604-HFE

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9167237

BMW E92 F32 E61 Seat Belt Module Control Unit LCPA ECU 9167237

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7419610-1

BMW F30 F31 LCI Headlight LED Module Insert Light Source Control Unit 7419610

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BV61-12A650-DGB-1

Ford Focus Mk3 1.6 TDCI T1DB 115HP Engine Control ECU BV61-12A650-DGB Manual

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GB3T-14D068-KC

Ford Ranger Mk3 Fuse Box Relay Panel 2.2 TDCI 4x4 GB3T-14D068-KC

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L5971104

Porsche Cayenne 955 9PA Rear Bumper PDC Sensor Wiring Loom Cable 7L5971104

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8044503

BMW F06 F10 F12 F13 Fuel Injectors Wiring Loom Harness Cable 8044503

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K5971030D

Audi A6 C8 Door Card Wiring Loom Harness Cable Front Passenger Side 4K5971030D

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0907530AG

Skoda Octavia 5E Mk3 Superb Mk3 Gateway Control Unit Module 5Q0907530AG

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR037711-2

Range Rover Evoque L538 Rear Tail Light Lamp Connector Wire Left N/S LR037711

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906022RC-1

Audi TT 8J 2.0TDI 170HP CBBB Quattro Engine ECU Kit BCM Key 03L906022RC Manual

€170.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3T9035577A

Skoda Superb Mk2 B6 Aerial Antenna Amplifier Module Control Unit 3T9035577A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. KK62-14N244-AE

Range Rover Sport L494 Alternator Wire Harness Cable Hybrid KK62-14N244-AE

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2216890614

Mercedes W221 PDC Distance Control Holder Bracket A2216890614

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8634167

Alternator BMW G11 G12 LCI G20 G21 G30 G31 Alternator 250A Denso 8634167

€123.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. JK2T15K868AB

Ford Transit Custom Rear Bumper PDC Cables Wiring Loom Harness JK2T-15K868-AB

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9329345

BMW F20 F21 F30 F31 Bluetooth Telephone Control Module Unit 9329345

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6933268

BMW 7 Series E65 E66 Control Unit Door Rear Passenger Side 6933268

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9287441

BMW F21 F22 F23 Wiring Loom Harness Passenger Side 9287441

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P6035730B

VW Volkswagen Passat B7 Caddy 2C Bluetooth Control Module Unit ECU 7P6035730B

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2229001306

Mercedes W910 Gearbox Module Transmission Basic Control Unit A2229001306

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5K0937086AA-1

VW Volkswagen Caddy 2k Body Control Module BCM 2.0 TDi Automatic 5K0937086AA

€170.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V0919129

Volkswagen Golf R Mk7 A3 8V TV Tuner Control Unit Module ECU 8V0919129

€104.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BM2T-14B321-AC

Ford S-Max Mk1 Air Module Control Module Unit ECU BM2T-14B321-AC

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2H0911023K

Volkswagen Crafter 35 Starter Motor 2.0 TDI Bosch 2H0911023K

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9262215

BMW F01 Front Bumper Parking Sensor PDC Wiring Loom Harness Cable 9262215

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2479002307

Mercedes W177 W247 4Matic Transfer Control Unit Module ECU A2479002307

€137.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4535406211

Smart A453 Wiring Loom Harnes Cable A4535406211

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G8971365

Audi A7 4G Seat Cable Front Left Right N/O/S Wiring Loom Harness 4G8971365

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2465405933

Battery Cable Mercedes W176 W246 Terminal Starter Wiring Harness A2465405933

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906018JG-2

Audi A5 8F Engine Control Unit ECU 2.0 TDI CGLC 177HP Manual 03L906018JG

€127.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6911584

BMW E65 E66 Steering Wheel MFL Phone Switch Buttons Left N/S 6911584

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9160558

BMW 5 Series E60 E60N E61 E61N LCI Airbag ECU Control Unit Module

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F1971845A

Audi R8 42 Fuse Box Electrical Connector Relay Control Unit Module 4F1971845A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CK52-14301-BC

Range Rover L405 Negative Battery Terminal Cable Lead Wiring CK52-14301-BC

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2049002013

W204 Mercedes Sat Nav CD Player Radio Stereo Head Unit A2049002013 W204

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K8971036F

Audi A6 C8 Door Card Wiring Loom Harness Cable Front Passenger Side 4K8971036F

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 83A945092-2

Audi Q3 F3 LED Tail Light Rear Right O/S Plug Wire Cable Connector 83A945092

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0419065D

Audi A4 B9 A5 F5 Power Steering Column Control Unit Module 8W0419065D

€47.95

Free delivery: Aug 7 – 11

If paid before 14:00

Part no. 9117801

Battery Bracket BMW X3 G01 X4 G02 Rear Holder Mount Carrier Support 9117801

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5B824D2

BMW F74 Gran Coupé Emergency Module Telematics Control Unit 5B824D2

€303.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9387561

Head Unit BMW I3 I8 Mini F56 Navigation Sat Nav DAB High Control Module 9387561

€227.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9312764-1

BMW F10 LCI Body Control Module ECU Junction Box PL6 JBBFE III V2 9312764

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906022FL-1

Audi A6 C6 2.0 TDI 233HP CAGB Engine Control ECU Kit 03L906022FL Key + Lock

€180.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9214813

BMW X5 E70 Safety Airbag Control Unit Module ECU X6 E71 Bosch 9214813

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2045458601-1

Mercedes W204 Fuse Box Rear Relay Control Unit Module SAM A2045458601

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6549001300-1

Mercedes W213 C238 Glow Plug Relay Diesel OM654 Preglow Module A6549001300

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2711504979-1

Mercedes W204 156HP Engine Control Unit ECU KIT SET Petrol Automatic A2711504979

€560.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YMD001991

Range Rover L322 Parking Sensor PDC Wiring Harness Cable YMD001991

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1439740

BMW X5 E53 Cable Starter-Base B Electrical Cable Wiring 3.0i M54 Petrol 1439740

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971765F

Audi A4 B8 A5 8T AdBlue Additive Fuel Tank Wiring Loom 2.0 TDI 8K0971765F

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LPLA-10C307-AD

Range Rover Sport L494 Starter Motor Cable Wire Loom 3.0 Diesel LPLA-10C307-AD

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L903023

Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2465406432

Battery Cable Mercedes W176 W246 Negative Lead Wiring Harness A2465406432

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T2035110A

Audi A5 8T Radio Head Unit Navi CD DVD Player Changer 8T2035110A

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2124405833

Door Wiring Mercedes W212 Loom Cable Rear Left Right N/O/S A2124405833

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6933267

BMW 7 Series E65 E66 E67 Control Unit Door Front Passenger Side 6933267

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0971365H

Audi A8 D4 Seat Wiring Harness Cable Seat Belt Warning System 4H0971365H

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P5971073AB

Porsche Cayenne 92A VTS Vehicle Tracking System Wiring Loom Harness 7P5971073AB

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P5971411A

Porsche Cayenne 92A Air Heater Flap Actuator Motor Wiring Cable 7P5971411A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6850765

Mini F46 F45 F60 Braking Cable DSC Pulse Generator Sensor Wiring Front 6850765

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V0919813

VW Volkswagen Golf R Mk7 Toll Reader Device Module Chip Card Reader 8V0919813

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009056001

Battery Cable Mercedes W213 S213 Negative Lead Wiring Harness A0009056001

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 05L907309T

Skoda Karoq Tiguan Mk2 Engine Control Module Automatic 2.0 TDI ECU 05L907309T

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F9035225AA

Audi A6 C6 Antenna Amplifier Control Unit Module 4F9035225AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 859800D060

Toyota Yaris XP10 Door Control Module Unit ECU 859800D060

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1812480

Ford Focus Mk3 Seat Air Module Sensor Front Passenger Side BM51-A625B02-AC

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CV1T-14B533-AG

Ford Fiesta Mk7 Front Door Module Control Unit ECU Passegner Side CV1T-14B533-AG

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AH2210300AB

Land Rover Range Sport L320 Diesel Engine Alternator Generator AH22-10300-AB

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GJ32-14D619-BA

Land Rover Discovery Sport L550 Door Module Rear Passenger Side GJ32-14D619-BA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0035225N

Audi A8L 4H Antenna Aerial Amplifier 4H0035225N

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DG9T-14633-GCG

Ford Mondeo Mk5 Door Wiring Harness Loom Cable Rear Left N/S DG9T-14633-GCG

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6S6Y-14401-NDF

Ford Fiesta St Mk5 Fuse Box Relay Box Module 2.0 DURATEC ST150 6S6Y-14401-NDF

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. HPLA-9137-BD

Land Rover Range Rover Sport L494 Steering Wheel Airbag Wiring Loom HPLA-9137-BD

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009060803

Alternator Mercedes W176 C117 X156 X117 Petrol Engine Generator A0009060803

€118.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8379766

BMW E65 E90 E91 E92 E93 Auto Boot Release Switch Tailgate 8379766

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DPLA-14F70-BB

Range Rover L405 L494 Power Distribution Control Unit Module DPLA-14F70-BB

€284.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8E2-14D600-AC

Range Rover Velar L560 Front Seat Module ECU Left Right N/O/S M8E2-14D600-AC

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7PP035730B

Porsche Cayenne 92A Multimedia Music Navi CD Radio Player Head Unit 7PP035730B

€507.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6933270

BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver Side 6933270

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1765400103

Battery Cable Mercedes C117 W176 Starter Alternator Wiring Harness A1765400103

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0971366M

Audi A8 D4 Seat Frame Wiring Harness Front Left N/S 4H0971366M

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6942550

BMW E90 Front Seat Wire Cable Harness Wiring Loom 6942550

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9341546

BMW F40 G20 G30 Accelerating Sensor 9341546

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BG9T-15K867-SC

Ford Mondeo Mk4 Front Bumper Parking Sensor Wiring Loom Harness BG9T-15K867-SC

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C0919275S-BLK1

Audi TT 8J PDC Parking Assist Distance Sensor Control 3C0919275S Black

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GOLF-5K-SCREEN-3

VW Golf Mk5 Mk6 Passat B6 B7 Car Radio Display MMI Multimedia Touch Screen 7"

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CS7T-14D212-AF

Ford S-Max Telematics Bluetooth Control Module ECU Unit CS7T-14D212-AF

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1775402111

Mercedes W177 Door Harness Loom Cable Wiring Rear Left Right N/O/S A1775402111

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0959595G

Audi A4 B9 Rear Door Control Module Unit ECU Left Right N/O/S 8W0959595G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6929556

BMW E65 E66 Driver's Seat Air Module Sensor Control Unit Module 6929556

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7790996

Mini One D R50 W17 Base B+ Battery Terminal Point Engine Compartment 7790996

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1768200704

Sunroof Wiring Mercedes C117 W176 Panoramic Motor Cable Harness A1768200704

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5G6867657

Volkswagen Golf 5G Mk7 Rear Lamp Light Bulb Cover Left N/S 5G6867657

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T8971687S

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Left N/S 8T8971687S

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CK52-14632-AE

Range Rover L405 Door Wiring Loom Harness Cable Rear Right O/S CK52-14632-AE

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-19G490-AE

Range Rover L405 Camera Module Rear View Parking Camera Unit CPLA-19G490-AE

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8D0973822

Audi Q3 F3 Flat Connector Lid Lock Connector Micro Switch Wire Bonnet 8D0973822

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK3T-14335-BB

Ford Transit MK8 Interior Reading Roof Light Wiring Cable Adapter BK3T-14335-BB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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