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-Benz C W204 Rear Battery Support Holder Mount Bracket A2046190048

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 503446570201

Vauxhall Movano C BCM BCM Body Control Module Fuse Box Unit 503446570201

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8H0971589AD

Audi A4 B7 Steering Wheel Multifunction Wiring Loom Harness Cable 8H0971589AD

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3C8971121BN

VW Volkswagen Passat CC Wiring Harness Cable Front Passenger Side 3C8971121BN

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1569005100

Mercedes C204 C63 AMG Engine ECU 156.985 487HP Key Lock Set Auto A1569005100

€854.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A4159007503

Mercedes Citan W415 Body Control Module Unit BCM ECU A4159007503 284B18276R

€237.95

Free delivery: Sep 15 – 16

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Part no. A2049004406

Mercedes W204 Radio Stereo CD Player Head Unit A2049004406

€108.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1J0803219

Skoda Octavia II Battery Bracket Battery Clamp Holder Mounting 1J0803219

€23.95

Free delivery: Sep 15 – 16

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Part no. 9A260703702

Porsche 718 Boxster 982 Battery Earth Ground Cable Negative 2.0 9A260703702

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F1971693D

Audi A6 C6 Rear Door Wiring Left Right N/O/S Harness Loom Cable 4F1971693D

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2125406105

Mercedes W212 Rear LED Wiring Cable Harness Loom A2125406105

€23.95

Free delivery: Sep 15 – 16

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Part no. 7N0971557

Volkswagen Sharan 7N Front Door Wiring Loom Cable Harness Driver Side 7N0971557

€23.95

Free delivery: Sep 15 – 16

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Part no. 8626762-1

BMW F20 M435i N55 326HP Engine Control Unit ECU DME 8626762 Automatic

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8573260-11

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 + Key + FEM Manual

€284.95

Free delivery: Sep 15 – 16

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Part no. A6519007500-18

Mercedes W212 E220 CDI 651.924 170HP Engine Unit ECU Kit A6519007500 Automatic

€313.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 059911024H-1

Audi Q7 4L Engine Starter Motor Actuator 3.0 TDI Quattro 0 986 024 050

€23.95

Free delivery: Sep 15 – 16

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Part no. LR028513-2

Range Rover L322 Tail Light Lamp LED Taillight Wiring Rear Right O/S LR028513

€23.95

Free delivery: Sep 14 – 16

If paid before 14:00

Part no. CA6T-14B526-DC

Ford Fiesta Mk7 Start Stop Engine Module Control Unit ECU CA6T-14B526-DC

€23.95

Free delivery: Sep 15 – 16

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Part no. VP7EKX-13K198-AB

Ford Fiesta MK7 Front Headlight Adjustment Motor Range Control VP7EKX-13K198-AB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AG9T-14324-UC

Battery Cable Ford S-Max Negative Lead Wiring Harness Cable AG9T-14324-UC

€23.95

Free delivery: Sep 15 – 16

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Part no. 6796905

BMW F01 F01N F02 F10 AHK Towing Hitch Tow Bar Control Module Unit ECU 6796905

€151.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G8971036H

Audi A7 4G Front Door Wiring Loom Harness Passenger Side 4G8971036H

€56.95

Free delivery: Sep 15 – 16

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Part no. 03L906018BB

Volkswagen Golf GTD Mk6 2.0 TDI CFGB Engine Control ECU 03L906018BB Manual

€165.95

Free delivery: Sep 15 – 16

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Part no. KK62-14N276-AE

Range Rover Sport L494 Battery Cable Wiring Loom Harness KK62-14N276-AE

€51.95

Free delivery: Sep 15 – 16

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Part no. M8A2-14A076-BA

Range Rover Velar L560 Fuse Box Unit Upper Cover Cap Trim M8A2-14A076-BA

€23.95

Free delivery: Sep 15 – 16

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Part no. 7N0907441B

Seat Alhambra 7N VW Sharan 7n Reversing Camera Control Module ECU 7N0907441B

€189.95

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Part no. 5QA971228G

VW Volkswagen Tiguan Mk2 Touran Mk3 Positive Battery Cable Lead 5QA971228G

€23.95

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Part no. 1Z0971161G

Skoda Octavia Mk2 Rear Door Wiring Harness Cable Right O/S 1Z0971161G

€23.95

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Part no. DH22-14B192-AA-1

Range Rover Velar L560 Fuse Relay 4-Pin 20A 12V Unit Set X2 DH22-14B192-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9286024

BMW F01 F02 TV Tuner Control Unit Module ECU 9286024

€156.95

Free delivery: Sep 15 – 16

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Part no. M8D2-14C568-FB

Land Rover L550 Engine Control ECU 1.5 Petrol 269HP Automatic M8D2-14C568-FB

€332.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 51794156-2

Fiat Panda Mk2 Headlight Headlamp Wiring Harness Cable Plug Left N/S 51794156

€23.95

Free delivery: Sep 15 – 16

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Part no. 9665162580

Peugeot Partner Citroen Berlingo 1.6 HDI Engine Wiring Cable Bracket 9665162580

€23.95

Free delivery: Sep 15 – 16

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Part no. 04E0919064

Audi A8 D3 Door Lightning Module Control Unit Front Rear 04E0919064

€23.95

Free delivery: Sep 15 – 16

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Part no. 2188246

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

€70.95

Free delivery: Sep 15 – 16

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Part no. 8X0919475AL

Audi A1 S1 8X PDC Parking Assistance Control Module Unit ECU 8X0919475AL

€23.95

Free delivery: Sep 15 – 16

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Part no. 4G8035225G

Audi A6 C7 Avant Antenna Amplifier Upper Right O/S 4G8035225G

€23.95

Free delivery: Sep 15 – 16

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Part no. 8E0953549T-1

Audi A4 RS4 B7 Steering Column Control Module Unit 8E0953549T

€123.95

Free delivery: Sep 15 – 16

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Part no. 8W0971534

Audi S5 F5 Earth Line Voltage Converter Starter Alternator Harness 8W0971534

€23.95

Free delivery: Sep 15 – 16

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Part no. A2128270128-IRS

Roof Antenna Mercedes W212 Shark Trim Panel Iridium Silver - 775 A2128270128

€23.95

Free delivery: Sep 15 – 16

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Part no. 3C0951171C

Volkswagen Passat B7 Golf Mk6 Roof Alarm Sensor Module 3C0951171C

€23.95

Free delivery: Sep 15 – 16

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Part no. K8D2-14A067-CA

Land Rover Discovery Sport L550 Fuse Box Fusebox Bracket Mount K8D2-14A067-CA

€23.95

Free delivery: Sep 15 – 16

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Part no. 8366625

BMW 259 259R 259 R22 Connection Plug Relay Pink Tyco 8366625

€23.95

Free delivery: Sep 15 – 16

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Part no. 7G9T-14B533-KC

Land Rover Freelander 2 L359 Door Control Unit ECU Front Left N/S 7G9T-14B533-KC

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9315150

BMW X3 F25 Front Distribution Box Fuse Box Power Control Unit 9315150

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2038301613

Mercedes C CLK Class W203 C209 Engine Bay Fuse Box Right O/S Cover A2038301613

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8R0959655B

Audi Q5 8R Air Control Unit Module ECU 8R0959655B

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2229004619

Mercedes W205 W213 C238 Bluetooth Hermes LTE Control Unit Module A2139002210

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7P6907530J

VW Volkswagen Touareg 7P MK2 Gateway Control Unit Module ECU 7P6907530J

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9207008

Mini R55 R56 LCI R57 Door Wire Cable Harness Wiring Loom Passenger Side 9207008

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8844294

BMW X1 U11 High-Voltage Battery Module Connector 8844294

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 46863927

Vauxhall Movano C Parking Distance Control PDC Unit Module 46863927

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03C906024CD

Seat Ibiza 6j Mk4 1.4 CGGB 85HP Engine Control Unit ECU 03C906024CD Manual

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3AA906507A

VW Volkswagen Passat CC Engine Control Unit ECU Bracket Holder Tray 3AA906507A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G0951177

Audi A6 C7 A7 4G Alarm Movement Detector Roof Headliner 4G0951177

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. M8A2-14N166-AB

Range Rover Velar L560 Battery To Junction Box Wiring Loom Harnes M8A2-14N166-AB

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F0971765

Audi A6 C6 Wing Mirror Adjustment Switch Wiring Loom Cable 4F0971765

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7612455-4

BMW E90 E91 E92 E93 LCI N53 272HP Engine Control ECU DME Kit 7612455 Manual

€332.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0971693AB

Audi A4 B9 Rear Door Card Loom Wiring Loom Harness Cable 8W0971693AB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0907468M

Audi A4 B9 A5 F5 Gateway Control Module Unit ECU 8W0907468M

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. C1BT18K811PA

Ford Fiesta Mk7 Dashboard Head Media Player Panel Air Vent C1BT-18K811-PA

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4B0951173

Audi A3 8L A4 B5 A6 C5 Alarm Control Module Unit ECU 4B0951173

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8631725-8

BMW F22 F30 F32 N20 184HP Engine Control ECU Kit DME 8631725 Manual

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6944875

BMW E36 Z4 E85 Z3 Module Radar Burglar Alarm Sensor 6944875

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6F0971161T

Seat Arona KJ7 Door Wiring Harness Loom Cable Rear Right O/S 6F0971161T

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1509691

Ford Mondeo Mk4 Gearbox Earth Ground Cable Wiring Lead 8G9T-14324-PB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9367693

BMW M5 F90 G11 G12 Power Distribution Relay Fuse Box Make Contact 9367693

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8511409

BMW F10 F11 N57N Control Unit Module Box Cover Bracket Carrier Mount 8511409

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4L2910401B-1

Audi Q7 4L 3.0 TDI CRCA Quattro Engine ECU Kit Lock + Ignition + Key 4L2910401B

€854.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0959595E

Audi A3 8V Door Control Module Unit ECU Rear Left Right N/O/S 5Q0959595E

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5QA915181E

Audi Q3 RSQ3 F3 Negative Cable Battery Terminal Wiring Loom 5QA915181E

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2385452700

Mercedes C238 Rear Control Unit Module Bracket Holder Trim Panel A2385452700

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8J0945095B-3

Audi TT 8J Rear Tail Light Lamp Wiring Harness Cable Left N/S 8J0945095B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 05E907309CA-1

Audi A3 8Y 30 TFSI 1.5 DXDE 115HP Engine Module Control ECU 05E907309CA Manual

€165.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7266666

BMW F11 Touring Control Unit Rear Tailgate Boot Lid Function Module 7266666

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2045402710

Mercedes W204 Wiring Loom Cable Door Rear Left Right N/O/S A2045402710

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2469009212

Mercedes X117 Tailgate Boot Control Rear Module Unit A2469009212

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6960220

Airbag Module BMW E65 E66 Airbag A-Pillar Sensor Right O/S Control Unit 6960220

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9207025

Mini R55 R56 LCI R57 Door Wire Cable Harness Wiring Loom Driver's Side 9207025

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 522350570

Vauxhall Movano C Radio Stereo Multimedia Control Module Head Unit 522350570

€379.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6842253

BMW F48 F45 Mini F55 Front Air Module Control Unit ECU 6842253

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8578504

BMW F30 LCI 335dX N57Z Engine Gearbox Module Wiring Cable Loom Harness 8578504

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7N0959794K

VW Sharan 7N Rear Door Module Control Unit Left N/S Passenger Side 7N0959794K

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2125406505

Mercedes W212 Door Wire Wiring Loom Front Right O/S A2125406505

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. L1BT-18B955-FC-1

Ford Puma Display Screen Radio Multimedia Navigation Sat Nav L1BT-18B955-FC

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6820234

Air Conditioning Module BMW F20 F21 F30 F31 A/C Control Unit 6820234

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9339339

BMW 1 3 F20 F21 F30 F31 Driver Side Seat Wiring Loom Cable Harness 9339339

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9237968

BMW F07 GT Central Gateway Module ECU Control Unit Lear ZGW-01 High 9237968

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7P0937211A-1

VW Volkswagen Touareg 7P Fuse Box Relay Control Module 7P0937211A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G8959795A

Audi A7 4G8 Door Control Module Electrical Unit ECU Rear Right O/S 4G8959795A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. E84-SCREEN

BMW X1 E84 Radio Navigation Head Unit Android CarPlay Screen Display 10.25"

€237.95

Free delivery: Sep 15 – 16

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Part no. A1645451840

Mercedes W164 ECU Control Unit Bracket Holder A1645451840

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7620985-6

Mini Cooper S R56 LCI R60 N18 1.6 184HP Engine Unit ECU Kit DME 7620985 Manual

€569.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G9035225C

Audi A6 C7 Avant Antenna Amplifier Upper Left N/S 4G9035225C

€23.95

Free delivery: Sep 15 – 16

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Part no. A2059007437

Sam Module Mercedes S205 Relay Fuse Box Rear Control Module In Trunk A2059007437

€99.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7928690

BMW F74 Gran Coupé Radio Audio Remote Control Receiver 7928690

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2075406233

Mercedes A207 Front Seat Wiring Harness Cable Left Right N/O/S A2075406233

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 11110150000

Audi Q3 F3 Headlight LED Inner Module Unit Left N/S 11080370000

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2059001811

Mercedes W205 Rear Door Control Module Unit Left N/S ECU A2059001811

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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