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 Kuga Mk1 Xenon Headlight Lamp Left N/S Wire Harness Cable 8V41-13D155-BF

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DK62-14B687-DD

Land Rover Range Rover L405 Seat Wire Loom Harness Rear Left N/S DK62-14B687-DD

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2465400335

Mercedes W176 W246 Negative Earth Cable Battery Terminal Wiring A2465400335

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 83A907428C

Audi RSQ3 F3 Reversing Camera Control Unit Module 83A907428C

€360.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0971023

Audi A8 D4 A8 S8 4H Front Bonnet Wiring Loom Cables Harness 4H0971023

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6G9T-14B192-DA

Ford Galaxy Mondeo Transit Relay 4-Pin Black FoMoCo Unit 6G9T-14B192-DA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8489647-4

Mini Cooper F55 B38 1.5 136HP Engine ECU Kit DME 8489647 BDC Key Manual

€393.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1T0971095AN

Volkswagen Touran 1T Front Bumper Parking Sensor PDC Wiring Loom 1T0971095AN

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8387541

BMW X5 E39 E53 Fuse Box Housing 8 Fold Voltage Regulator Boot 8387541

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1729062100-2

Mercedes R172 Rear Tail Light Lamp Wiring Harness Cable Right O/S A1729062100

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8865048

Bmw X1 U11 Low Voltage Wiring Harness Cable Loom 8865048

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2465410905

Mercedes W176 W246 C117 X156 Battery Fuse Relay Box Top Cover Trim A2465410905

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3453954

Mini Cooper One R57 R58 Aerial Antenna Amplifier Diversity Module 3453954

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V0035504B

VW Volkswagen Golf GTI Mk7 Chip Card Reader Road Toll Sender Control 8V0035504B

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G5945093G-2

Audi A6 C7 Rear Tail Light Lamp LED Wiring Cable Inner Left N/S 4G5945093G

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03C906027AE

Seat Ibiza 6J Mk4 1.4 TSI CAVE 180HP Engine Control ECU 03C906027AE Automatic

€222.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7N0951253

VW Volkswagen Scirocco Mk3 Power Starter Motor Relay 12V 50A Plug 7N0951253

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7625998

BMW F20 F21 F22 F30 F31 F32 F33 Line Cable Power Distribution Module 7625998

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7W93-11A134-AA

Jaguar XF 250 Power Adapter Battery Positive Terminal 7W93-11A134-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0919887M

Audi A5 8T Navigation System Car Sat Nav Computer Head Unit 4F0919887M

€104.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8J0907159B

Audi TT 8J Alarm Signal Body Sound Impact Control Module Unit 8J0907159B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9252651

BMW 1 2 3 Series F20 F21 F22 F30 Radio Remote Control Receiver 868 MHZ 9252651

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2389053301

Tailgate Trunk Mercedes X117 X156 W205 Boot Rear Control Module Unit A2389053301

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1S0919275D-BLK

Audi Q3 8U PDC Parking Distance Control Sensor Black - Z9Y 1S0919275D

€23.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 9350676

Mini Cooper One F54 F55 F56 F60 ECU Body Domain Controller BDC Module 9350676

€99.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9346806

BMW F01 F02 F03 LCI F06 F10 F13 Antenna Amplifier Diversity 868 MHZ 9346806

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9286941

BMW F10 ECU Body Control Module Junction Box V2 PL6 JBBFE III 9286941

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2045402210

Mercedes W204 Front Door Electrical Cable Wiring Loom A2045402210

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2669000200

Mercedes W245 B180 266.940 Engine Control Module ECU A2669000200 Automatic

€222.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9387266

FEM Module BMW F23 F36 Body Control Unit ECU LR01 9387266

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L0971767A

Porsche Cayenne 9PA Windscreen Washer Wiring Loom Cable 7L0971767A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L0937401B

Audi Q7 4L Power Distribution Box Control Unit Plus Housing Cover 7L0937401B

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9383681

Mini F55 Fuse Box Front Body Control Module ECU BCM Unit 13275881

€123.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR007521

Land Rover Discovery 4 L319 Glow Plug Wire Wiring Cable Left N/S 4R8Q-12A378-AF

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7583740

BMW Z4 E89 Earth Battery Cable Wiring Loom Harness Line 7583740

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9257494

BMW X3 F25 Stereo Radio Sat Nav Head Unit CD Player 9257494

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2079053300

Mercedes-Benz W207 Cabrio A207 Rear Left N/S Radio Aerial Antenna Amplifier

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0051511101

Mercedes W168 W414 Starter Motor E16 M166 Petrol Engine A0051511101

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4K0971727

Audi A6 C8 Pressure Sensor Wiring Loom Harness Cable 4K0971727

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9326404

BMW F34 Front Door Wiring Loom Harness Cable Driver Side 9326404

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4L0907355B-1

Audi Q5 8R Adblue Metering Control Module Unit ECU 4L0907355B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9314399

BMW X5 F15 Front Seat Wiring Loom Harness Cable Right O/S 9314399

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V4T-14297-AAB

Ford Kuga C394 Heated Windscreen Wire Harness Cable Loom 8V4T-14297-AAB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A4475401440

Mercedes Vito W447 Fuse Box Relay Control Unit Module A4475401440

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. F1FT10C679BA

Ford Transit Mk7 V Negative Battery Terminal Cable Wiring F1FT10C679BA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3456016

Mini R55 R56 R57 R58 R60 Control Unit PDC Parking Sensor Module 3456016

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2721540002

Alternator Generator Mercedes R171 W209 M272 Petrol Engine 150A A2721540002

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7799146

Mini R55 R56 Alternator Supporting Bracket Mount Generator Diesel W16 7799146

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6459060800

Starter Motor Mercedes W176 W246 C117 Diesel Engine Denso A6459060800

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8321087-1

BMW E60 Front Seat Height Adjustment Electric Motor Actuator 0390203234 8321087

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2048703996

Mercedes W204 Multimedia Audio CD Player Radio Head Unit A2048703996

€322.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9805524-LW

Mini R60 Rear PDC Ultrasonic Parking Sensor Light White 9805524

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0907468M

Audi A6 C6 Diagnostic Interface Gateway Module ECU Control Unit 4F0907468M

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2661503133

Engine Wiring Mercedes W169 W245 M266 Petrol Cable Loom Harness A2661503133

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2N0915181G

Volkswagen Crafter Mk2 Negative Minus - Battery Terminal Wiring Cable 2N0915181G

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8377415

BMW E60 E61 E63 E64 Fuel Fillter Flap Cover Actuator 8377415

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P6971694F

VW Volkswagen Touareg 7P Door Wiring Harness Rear Left Right N/O/S 7P6971694F

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2055407412

Mercedes W205 Alternator Ground Cable Wiring Loom A2055407412

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6944962

BMW E60 E61 Centre Console Switch Centre DSC PDC 6944962

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8512047

BMW E90 E91 LCI N47N 320d ed ECU KIT DDE CAS 3 Key 8512047 Manual

€165.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3405815

BMW X3 Series E83 E83N Inclination Indicator Alarm System 65753405815 3405815

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6927000

BMW E63 E64 Amplifier Holder Catch Bracket Video Module 6927000

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 0-390-201-999

BMW 5 Series E60 E61 Front Seat Backrest Adjustment Bosh 0 390 201 999

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9231283-AZB

BMW E70 F10 F11 PDC Parking Sensor Ultrasonic Sensor Azurit Black - S34 9231283

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9157157

BMW E60 E61 E63 E64 Gateway Module Control Unit ECU 9157157

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3428557

BMW Z4 E86 Alarm System Ultrasonic Roof Control Module 3428557

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2205401124-1

Fuse Box Unit Mercedes CL S C215 W220 1 Front Right O/S ECU A2205401124

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1679001520

Mercedes C118 W167 W177 W247 Ignition Control Module Unit ECU A1679001520

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2139007436

Mercedes W177 W213 Gearbox Transmission Control Module Unit ECU A2139007436

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. Q0003188V008000000-1

Smart Fortwo C450 Engine Starter Motor Actuator Q0003188V008000000

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5WA962133F

Audi Volkswagen Seat Keyless Entry Module Aerial Antenna 5WA962133F

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 80A907247A

Audi Q5 FY Keyless Entry Amplifier Control Box Module Aerial Antenna 80A907247A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8200881264

Alternator Support Nissan Qashqai Renault 2.0 dCi Engine Bracket 8200881264

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-14D618-AC

Land Rover Freelander 2 L359 Door Control Module Driver's Side BJ32-14D618-AC

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9283526

Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9283526

€161.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9210861

BMW F10 F11 Power Distribution Fuse Box Front 9210861 61149210861

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-13K031-AC-1

Range Rover Evoque L538 Headlight Control Module Unit BJ32-13K031-AC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8513184-2

BMW X3 F25 20dX Diesel N47N 184HP Engine Module ECU Kit DDE 8513184 Automatic

€123.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8582803-3

BMW X5 F15 N57N 258HP Engine Control Module Unit ECU DDE Kit 8582803 Automatic

€218.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0971365

Audi A4 B8 Seat Occupancy Belt Alarm Wire Wiring Cable Loom Harness 8T0971365

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3C0907651

Volkswagen VW Golf Mk6 1K Acceleration Sensor 3C0907651

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0907063AJ

Audi A5 8T Body Control Comfort Unit Module BCM Unit ECU 8K0907063AJ

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02Z911023R

Audi A3 8P VW Golf 5k Starter Motor 1.4 TFSI CAXC Petrol 02Z911023R 0001142003

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GOLF-5K-SCREEN-1

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

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1698702710

Mercedes-Benz A B Class W169 W245 Tow Protection ECO Switch Button Unit Module

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2139002817

Mercedes W177 W205 C257 Radar Sensor Front Control Unit Module A2139002817

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9123043

BMW E81 E87 E91 LCI Steering Column Switch Cluster Wiper Stalk 9123043

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. H1BT-15K868-ABD

Ford Fiesta MK7 MK8 Rear Parking Sensor PDC Wiring Loom Harness H1BT-15K868-ABD

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7545165

BMW E87 E90 116i 316i Petrol N45 Wire Wiring Harness Engine Gearbox Mod Loom

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3M5T-12A343-AA

Ford Focus Mk2 8-Pin Glow Plug Relay 2.0 TDCI G6DA DW10 1343078 3M5T-12A343-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2218702286

Mercedes W221 Front Seat Heater Control Unit Module ECU A2218702286

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 284B68764R

Mercedes W415 Fuse Box Relay Control Unit Module 284B68764R

€165.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8570849

BMW F20 F21 F30 F31 LCI 116i 118i 318i B38 Petrol Engine Starter Motor 8570849

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2218230050

Mercedes W221 Centre Console Telephone Keypad Control Unit Module A2218230050

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6911519

BMW E65 E66 E67 Wiper Switch Stalk Steering Column Wheel 6911519

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3AA919041

VW Sharan 7N Voltage Stabilizer Converter Electric Control Unit Module 3AA919041

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8661796

BMW G11 G12 G20 G21 G30 G31 High Voltage Plug Cover Housing 8679679

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5N0035342G-1

VW Scirocco Mk3 Polo Mk5 Multimedia Electronic Control Module ECU 5N0035342G

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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