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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BMW Mini Cooper R55 R56 LCI N16 Engine Wiring Loom Injection Ignition

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6920469

BMW E65 E66 E67 Sensor A-pillar Right Airbag 65776920469 6920469

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 83A907428C

Audi RSQ3 F3 Reversing Camera Control Unit Module 83A907428C

€360.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 1T0971095AN

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

€37.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8865048

Bmw X1 U11 Low Voltage Wiring Harness Cable Loom 8865048

€80.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 7N0951253

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5QA919294L

Audi Q2 GA Park Parking Assist PDC Distance Control Unit Module 5QA919294L

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7533283

BMW X3 Z4 Series E83 LCI E85 E86 Cover Top Power Distribution Fuse Box 7533283

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9824925

Mini F55 F56 F60 LCI Navigation Touch Screen 8.8" Display Nav Head Unit 9824925

€446.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1698207326

Mercedes-Benz A B Class W169 W245 Door Control Unit Left N/S Front A1698207326

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5QS907338B

Audi A3 S3 8Y Headlight Head Light Lamp Range Control Unit Module ECU 5QS907338B

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9188582

BMW X3 F25 Holder Audio Amplifier Telephone Bracket Mount Trim 9188582

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6926333

Door Cable BMW E93 Convertible Wiring Loom Front Cables Passenger Side 6926332

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2669000200

Mercedes W245 B180 266.940 Engine Control Module ECU A2669000200 Automatic

€222.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L0971767A

Porsche Cayenne 9PA Windscreen Washer Wiring Loom Cable 7L0971767A

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 9257494

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

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2199001100

Mercedes W219 Head Unit CD Player Navigation COMAND Radio Audio Unit A2199001100

€294.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4K0971727

Audi A6 C8 Pressure Sensor Wiring Loom Harness Cable 4K0971727

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9326404

BMW F34 Front Door Wiring Loom Harness Cable Driver Side 9326404

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. F20 F30 PLUG SOCKET LOOM PDC

PDC Plug BMW F20 F22 F30 F32 Loom Socket Parking Sensor Wiring Harness

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4L0907355B-1

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

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8P0907530A

Audi A3 8P Gateway Module Control Unit Gateway Module ECU 8P0907530A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. F1FT10C679BA

Ford Transit Mk7 V Negative Battery Terminal Cable Wiring F1FT10C679BA

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A2118203375

Antenna Booster Mercedes W211 Rear Boot Lid Tailgate Amplifier A2118203375

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6927572

BMW X3 E83 Z4 E85 Wiring Seat Occupancy Cable 6927572

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7587548-5

Mini Cooper S R55 R56 N14 1.6 174HP ECU Kit DME 7587548 CAS3 + Key Manual

€398.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8377658

BMW X5 SERIES E53 TV amplifier 8377658

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9079000304

Mercedes Sprinter W907 W910 Air Module Sensor Unit ECU A9079000304

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6927705

BMW 5 Series E60 E60N E61 E61N Battery lead positive underfloor 80 MM² AL petro

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0038208426

Crash Sensor Mercedes ML W164 W221 Front Rear Impact Airbag Unit A0038208426

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048703996

Mercedes W204 Multimedia Audio CD Player Radio Head Unit A2048703996

€322.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9122100

BMW 1 Series E88 Mini Cooper R57 R59 Sat Nav GPS Antenna Amplifier 9122100

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2N0915181G

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

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0955559C

Volkswagen Golf 8 Rain Sensor Front Windscreen 5Q0955559C

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A2055407412

Mercedes W205 Alternator Ground Cable Wiring Loom A2055407412

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6805893

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

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6797439

BMW F07 GT ICM Management Control Unit Module DSC Brakes 6797439

€66.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 9157157

BMW E60 E61 E63 E64 Gateway Module Control Unit ECU 9157157

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9229972

Module BMW Z4 E89 Convertible Cabrio ECU Control Unit Controller 9229972

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 504092575

Iveco Daily 3 Electrical Wire Earth Cable Battery Power Wiring 504092575

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6995617

BMW F40 F44 G20 G21X5 G05 X6 G06 Immobilizer Emergency Start Coil 6995617

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. Q0003188V008000000-1

Smart Fortwo C450 Engine Starter Motor Actuator Q0003188V008000000

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3Q0941329

Volkswagen Skoda Seat Audi Diesel Engine Adblue Module Control Unit 3Q0941329

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2218201811-2

Mercedes W221 Bluetooth Hands Free Mobile Phone Adapter Connector A2218201811

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0015467435

Battery Cover Mercedes W906 Battery Positive Pole Cover Red A0015467435

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 9360501-3

BMW F40 F48 Mini F56 Distribution Fuse Box Rear Electric Power Fuse Box 9360501

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8K0907063AJ

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

€61.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A9078200301

Mercedes W907 Radio Professional System Controller Head Unit A9078200301

€94.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 6964140

BMW 7 Series E65 E66 Control Unit Door Rear Passenger Side 6933264

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8512499-8

BMW E87 E90 LCI N47 118d 318d 143HP Diesel ECU Kit DDE 8512499 CAS3 + Key Manual

€151.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 5N0035342G-1

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

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7515197-1

Mini Cooper One R50 W10 Battery Cable Wiring Plus Pole 7515197

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055401516

Mercedes W205 Battery Cable Negative Lead Wiring Harness Control A2055401516

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2Q0937615A

Volkswagen Polo Mk6 Fuse Relay Box Power Supply Unit 2Q0937615A

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8865047

Bmw X1 U11 Low Voltage Wiring Harness Cable Loom 8865047

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6974373-1

BMW E81 E84 E87 E88 E90 Ultra Sonic Module Alarm System 9149671

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0055461340-1

Mercedes Vito W447 Energy Distributor Plug Module A0055461340

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V4971030H

Audi S3 8V 5Dr Front Door Wiring Harness Loom Passenger Side 8V4971030H

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7515197-2

MINI Cooper One R50 W10 Battery Cable Plus Pole 7515197

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6928050

BMW 7 Series E65 E66 E67 Battery Cable Wire Earth Ground Minus Negative L=260MM

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W0959592E

Audi A4 B9 Front Door Control Module Unit Passenger Side ECU 8W0959592E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 09D927750AK

Porsche Cayenne 955 9PA Automatic Gearbox Module Control Unit ECU 09D927750AK

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. K8D2-19C097-AA

Land Rover Discovery Sport L550 Aerial Antenna Control Module K8D2-19C097-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2079013700

Mercedes-Benz E-Class W207 Windscreen Windshield Rain Sensor Control Unit

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8H2214N131CA

Land Rover Discovery 4 Driver's Seat Memory Wiring Loom Harness 8H22-14N131-CA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L906018KP

Audi TT 8J CFGB 2.0 TDI Quattro 170HP Engine ECU Kit 03L906018KP Automatic

€146.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CPLA-17D547-AJ

Land Rover Discovery Sport L550 Windscreen Rain Sensor Module CPLA-17D547-AJ

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR024071

Range Rover L322 Car Ignition Key Remote Control 433.92MHZ LR024071 AH4215K601BF

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6821404

High Voltage Cable BMW F45 Mini F60 Hybrid Plugin Alternator 6821404

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4145401130

Mercedes Vaneo W414 Starter Wiring Harness Battery Ground Cable A4145401130

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8574093-5

BMW F10 F30 320d 520d 163HP Engine Control N47N ECU DDE 8574093 Automatic

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2389009000

Air Module Mercedes A205 A238 A217 SRS Protection Control Unit A2389009000

€99.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2125404600

Mercedes W212 AMG Front Bumper Parking Sensor PDC Wiring Harness A2125404600

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129004001

Mercedes W212 Fuse Box Control Unit Module SAM Relay Electrical Unit A2129004001

€161.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9111165-PB

BMW E81 E82 E87 E88 E90 E91 Ultrasonic Sensor PDC Platinbronze A53 9111165

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009820912

Mercedes W176 W222 W246 Voltage Converter Power Distributor Fuse A0009820912

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. L0283086

Range Rover L405 Rear Seat Bench Cooler Blower Unit Right O/S L0283087AA

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3405815

BMW X3 Series E83 E83N Inclination Indicator Alarm System 65753405815 3405815

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 83F877041A

Audi Q3 F3 Mk2 Panoramic Sunroof Control Unit Module ECU 83F877041A

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

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