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.

More information

Find it faster

Match to your vehicle

Make

Mini Cooper R56 LCI N16 1.6 Petrol Engine ECU Kit DME 7607685 + CAS 3 + Key

Product currently unavailable

Part no. 9146330

BMW X5 E60 E65 E70 Front Right Seat O/S Height Adjustment Drive

Product currently unavailable

Part no. A2045404150

Fuse Box Mercedes W204 W212 SAM Relay Control Unit Module A2045404150

Product currently unavailable

Part no. 03L903023-3

Volkswagen Scirocco Mk3 Audi A3 8V Diesel Engine Alternator 14V 140A 03L903023

Product currently unavailable

Part no. 8386207

BMW E39 Headlight Control Module LCM III LWR 8386207

Product currently unavailable

Part no. 8578946-3

BMW F20 F30 F32 120d 320d 420d 184HP N47N Engine ECU Kit DDE 8578946 Automatic

Product currently unavailable

Part no. 5Q0906121R

Seat Alhambra 7n Fuel Pump Control Unit ECU Module 2.0 TDI 5Q0906121R

Product currently unavailable

Part no. 7557809-2

BMW E87 E90 116i 316i Petrol Engine N45 ECU Kit DME 7557809 + CAS2 + Key Manual

Product currently unavailable

Part no. 1429861

BMW E38 728i M52 193HP Engine Control Unit ECU Module DME 1429861 Automatic

Product currently unavailable

Part no. 8519668-4

BMW E90 E91 LCI 320d N47N 184HP Engine Control ECU Kit DDE 8519668 Automatic

Product currently unavailable

Part no. 8H0035225J

Audi A4 B7 Cabrio Aerial Antenna Amplifier Module Unit Left N/S 8H0035225J

Product currently unavailable

Part no. YQE500300

Land Rover Discovery 3 Range Rover Sport Body Control ECU Fuse Box YQE500300

Product currently unavailable

Part no. 6G9T-15K602-AD

Ford Transit Mk7 Keyless Entry Receiver Control Unit Module 6G9T-15K602-AD

Product currently unavailable

Part no. 3456034-2

Footwell Module Mini R56 Cooper Light LOW EKS ECU PL3 FRM3R Lear 3456034

Product currently unavailable

Part no. A1645458532

Mercedes ML W164 SAM Module Passenger Side Control Unit A1645402501

Product currently unavailable

Part no. A0045452905

Mercedes Relay Fuse Unit Module 4 Pins Grey A0045452905

Product currently unavailable

Part no. 8614302-2

BMW F20 F21 F30 116i 316i N13 Engine Control Unit ECU Module DME 8614302 Manual

Product currently unavailable

Part no. 5K0937084D

Volkswagen Scirocco Mk3 Comfort BCM Control Module Unit ECU 5K0937084D

Product currently unavailable

Part no. A2105401830

Mercedes-Benz E-Class W210 Battery Positive Plus Cable Loom Harness A2105401830

Product currently unavailable

Part no. BH22-10E887-BC

Land Rover Discovery 4 L319 Radio Head Unit Multimedia Display BH22-10E887-BC

Product currently unavailable

Mercedes CL203 Antenna Amplifier Control Module Unit Aerial Booster A2038701689

-15%

Part no. A2038701689

Mercedes CL203 Antenna Amplifier Control Module Unit Aerial Booster A2038701689

Product currently unavailable

Part no. GK2T-18C394-BBC

Ford Transit Custom Mk8 Rear Door Wiring Loom Harness Left N/S GK2T-18C394-BBC

Product currently unavailable

Part no. 3457528

Mini Paceman R61 Footwell Light Module High EKS ECU PL3 FRM3R 3457528

Product currently unavailable

Part no. 93455416

Renault Trafic III Vauxhall Vivaro B Positive Battery Cable Lead Wire 93455416

Product currently unavailable

Part no. 6986081-1

BMW 5 6 Series E60 E61 E63 6-disc Compact CD Changer Without Magazine 6986081

Product currently unavailable

Part no. A2118700726

Mercedes W211 Seat Memory Control Unit Module Front Right O/S A2118700726

Product currently unavailable

Part no. A2129006624

Fuse Box Mercedes W204 Front Relay Control Unit Module SAM A2129006624

Product currently unavailable

VW Volkswagen Touareg 7L Transfer Box Control Unit Module ECU 0AD927755BG

-5%

Part no. 0AD927755BG

VW Volkswagen Touareg 7L Transfer Box Control Unit Module ECU 0AD927755BG

Product currently unavailable

Part no. 7810950-2

BMW E70 3.0d M57N2 235HP Engine ECU KIT DDE 7810950 CAS3 Key Automatic

Product currently unavailable

Part no. CC1T-11000-AB

Ford Transit Engine Starter Motor Actuator Starter CC1T14000AB

Product currently unavailable

Part no. 7640755-4

BMW F20 F21 114i N13 102HP Engine Unit ECU Kit DME 7640755 Key FEM Lock Manual

Product currently unavailable

Part no. BK3T-14401-ELC

Ford Transit Mk8 Fuse Box Power Distribution Junction Relay BK3T-14401-ELC

Product currently unavailable

Part no. 9253477

BMW E92 ECU Body Control Module Junction Box L1 PL2RR JBBFE IIIR 9253477

Product currently unavailable

Part no. A1669006507

Door Module Mercedes ML W166 C292 Rear Right O/S Door Control Unit A1669006507

Product currently unavailable

Part no. D1BT-14D212-CC

Ford Fiesta Mk7 Bluetooth Control Module Unit ECU D1BT-14D212-CC

Product currently unavailable

Part no. A2059061605

Mercedes W205 S205 C253 Door Ambient Light Wiring Front Right O/S A2059061605

Product currently unavailable

Part no. 9H22-10E889-AA

Land Rover Discovery 3 L319 Sat Nav Radio Display Screen Unit 9H22-10E889-AA

Product currently unavailable

Part no. 7557809-3

BMW 1 3 E87 E90 N45 116i 316i Petrol ECU Kit DME 7557809 + CAS 2 + Key Manual

Product currently unavailable

Part no. A2049007806

Mercedes W204 Sound Audio Amplifier Unit Harman Becker A2049007806

Product currently unavailable

Part no. 06L907309A

Audi A4 B9 2.0 TFSI CVKB 190HP Engine Control Unit ECU 06L907309A Automatic

Product currently unavailable

Part no. 8U0035192E

Audi Q3 8U Multimedia MMI Radio CD Sat Nav Head Unit Module ECU 8U0035192E

Product currently unavailable

Part no. 8740343-3

BMW F20 F30 F32 LCI B48 184HP Engine Control Unit ECU DME 8740343 Manual

Product currently unavailable

Part no. 5E0919605H

Skoda Octavia 5E Sat Navi Stereo Radio Display Audio Head Unit Player 5E0919605H

Product currently unavailable

Part no. 9170717

BMW 1 Series E87 LCI CCC CD Professional Navigation System Controller 9170717

Product currently unavailable

Part no. 6J4971161M

Seat Ibiza 6J Door Wiring Rear Right O/S Harness Loom Cable 6J4971161M

Product currently unavailable

Part no. 7PP959793L

Porsche Cayenne 92A Front Door Control Module Unit ECU Left N/S 7PP959793L

Product currently unavailable

Part no. 2454938

Ford Transit Custom Mk8 Alternator Generator 14V 220A GK2T-10300-BD

Product currently unavailable

Part no. 8507981

BMW F07 GT F10 F11 Engine Wiring Loom Harness Cables M57Z Diesel 8507981

Product currently unavailable

Part no. FK72-19C299-AA

Land Rover Evoque L538 Sat Nav Radio Display Screen 8 Inch FK72-19C299-AA

Product currently unavailable

Part no. 9640825280

Starter Motor Citroen Berlingo Peugeot Partner Engine Diesel 1.6 HDI 9640825280

Product currently unavailable

Part no. A2069055100

Mercedes C118 W167 W177 W206 W247 Stereo Amplifier Harman Kardon A2069055100

Product currently unavailable

Part no. 1EA959655ET

Volkswagen Caddy SB Air Module Control SRS ECU 1EA959655ET

Product currently unavailable

Part no. 99761826006

Porsche Cayman 987C BCM Body Control Module Unit ECU 99761826006

Product currently unavailable

Part no. 7553166-5

BMW E60 E90 E91 N52 325i 525i 218HP Engine Control Unit ECU DME 7553166 Manual

Product currently unavailable

Part no. 8T0971366CE

Audi A5 8T Front Seat Cable Wiring Loom Harness Left Right N/O/S 8T0971366CE

Product currently unavailable

Part no. A1729006503

Mercedes SLK R172 Roadster Folding Roof Module Vario Control Unit A1729006503

Product currently unavailable

Part no. 8T0907560F

Audi S5 8T 4.2 FSI CAUA Quattro 354HP Engine Control ECU Kit 8T0907560F Manual

Product currently unavailable

Part no. 9263797-1

BMW X1 E84 Footwell Light Module Control Unit ECU PL2 FRM3R 9263797

Product currently unavailable

PDC Wiring Mercedes R172 Parktronic Parking Sensor Cable Rear A1725407805

-15%

Part no. A1725407805

PDC Wiring Mercedes R172 Parktronic Parking Sensor Cable Rear A1725407805

Product currently unavailable

Part no. 6868254

BMW F33 ECU ICM Control Sensor Unit Air Module ECU 6868254

Product currently unavailable

Part no. 1735752

BMW E36 Electrical Fuse Relay Box Covering Panel Trim Socket Petrol 1735752

Product currently unavailable

Part no. 06J903023A

Audi A3 8V VW Golf Mk7 Alternator Generator 14V 140A 2.0 TFSI 06J903023A

Product currently unavailable

Part no. 8578115-1

BMW F10 F11 535d F13 640d N57Z 313HP ECU Kit DDE 8578115 Key CAS4 Automatic

Product currently unavailable

Part no. 5A7A3B9

BMW U06 X1 U11 Gearbox Wiring Loom Transmission Cable 5A7A3B9

Product currently unavailable

Part no. CV2T-10C679-BG

Ford Fiesta Mk7 Battery Negative Lead Terminal Cable Loom Harness CV2T-10C679-BG

Product currently unavailable

Part no. 7794626

BMW X5 E53 3.0d M57N 218HP ECU Engine Control Unit DDE 7794626 Automatic

Product currently unavailable

Part no. 8573257-7

BMW F30 F31 320d ed Diesel N47N 163HP ECU Kit DDE 8573257 + Key + FEM Automatic

Product currently unavailable

BMW F20 F21 M135i N55 326HP Petrol Engine Control Unit ECU DME 8626472 Automatic

-40%

Part no. 8626472-1

BMW F20 F21 M135i N55 326HP Petrol Engine Control Unit ECU DME 8626472 Automatic

Product currently unavailable

Part no. A2129000217

Mercedes W212 Radio Head Unit Navi CD Player Control Unit A2129000217

Product currently unavailable

Part no. 8K0906264B-1

Audi A4 B8 1.8 TFSI CJEB 170HP Engine ECU Kit 8K0906264B Key + Ignition + Lock

Product currently unavailable

Part no. 8610006

Mini Cooper S R56 LCI N18 1.6 184HP Engine Control Unit ECU DME 8610006 Manual

Product currently unavailable

Part no. 2K5972176

VW Volkswagen Caddy MK3 Trunk Boot Tailgate Wiring Cable Loom 2K5972176

Product currently unavailable

Part no. HX63-18K812-CG

Land Rover Discovery Sport L550 Sat Nav Radio CD Player Head Unit HX63-18K812-CG

Product currently unavailable

Audi A6 C8 Q7 4M Glow Plug Relay Unit Control Module 3.0 TDI 059907282

-15%

Part no. 059907282

Audi A6 C8 Q7 4M Glow Plug Relay Unit Control Module 3.0 TDI 059907282

Product currently unavailable

Part no. 7559178-5

BMW E60 525i E90 E91 325i N52 Engine ECU Kit DME 7559178 CAS2 + Key Automatic

Product currently unavailable

Part no. BU3T-12B637-CCB

Peugeot Boxer 2.2 HDI Diesel Engine Wiring Cable Loom Harness BU3T-12B637-CCB

Product currently unavailable

Part no. 7N0907530D

Volkswagen Touran 1T Body Gateway Module ECU Control Unit 7N0907530D

Product currently unavailable

Part no. 8695512-1

BMW F80 M3 F82 F83 M4 431hp Engine Control ECU Kit DME 8695512 + FEM Module Key

Product currently unavailable

Part no. 8519005

BMW X1 E84 18dX Diesel N47N 143HP Engine Control Unit ECU DDE 8519005 Manual

Product currently unavailable

Part no. 8379627

BMW 5 Series E39 Left N/S Air Box Pollen Microfilter Service Cover 8379627

Product currently unavailable

Part no. 9261703

Audio Amplifier BMW F10 F11 F12 F13 Harman Kardon Top HIFI Sound Unit 9261703

Product currently unavailable

Part no. 1K0971349FL

Audi A3 8P Alternator Main Cable Wiring Harness Loom 1K0971349FL

Product currently unavailable

Part no. 8639582-3

BMW F30 335i F32 F33 435i N55 306HP Engine Control ECU Kit 8639582 Automatic

Product currently unavailable

Part no. 8587952

BMW F20 F21 F30 LCI 120d 320d B47 Diesel ECU Engine Unit DDE 8587952 Automatic

Product currently unavailable

Part no. 02Z911021C

Volkswagen Polo 6C Starter Motor Actuator 1.4 TDI Diesel Engine 02Z911021C

Product currently unavailable

Part no. 7621178-4

BMW E81 E87 LCI E90 N43 118i 318i Engine Control Unit ECU DME 7621178 Manual

Product currently unavailable

Part no. 8K0907063BE

Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907063K

Product currently unavailable

Part no. A2055402324-1

Mercedes W205 Centre Console Ambient Lighting Light Wiring Harness A2055402324

Product currently unavailable

Part no. A4518200359-2

Smart Fortwo 451 Cabrio Headlight Front Left N/S Harness Wire Cable A4518200359

Product currently unavailable

Part no. A6401504033

Mercedes-Benz B-Class W245 180CDI Engine Wiring Harness Loom Cable A6401504033

Product currently unavailable

Part no. 7579142-4

BMW E87 LCI E90 120i 320i Petrol N43 170HP ECU Kit DME 7579142 CAS3 Key Manual

Product currently unavailable

Part no. 8U0857273E

Audi Q3 S Line Multimedia Radio Sat Nav Screen Display Head Unit 8U0857273E

Product currently unavailable

Part no. 022906032DP

Audi TT 8N 3.2 FSI BHE Quattro 250HP Engine Control ECU 022906032DP Automatic

Product currently unavailable

Part no. 7607685-1

Mini R56 R57 LCI One N16 1.6 98HP Petrol Engine ECU Kit DME 7607685 CAS3 + Key

Product currently unavailable

Part no. A9069006102

Mercedes Sprinter W906 Radio CD Player Audio Stereo Head Unit A9069006102

Product currently unavailable

Part no. A0131542102

Alternator Mercedes Vito W639 OM646 Engine Alternator Generator A0131542102

Product currently unavailable

Part no. 7G9N-10D893-AB

Land Rover Freelander 2 L359 Bluetooth Module Control Unit ECU 7G9N-10D893-AB

Product currently unavailable

Part no. A6421506100-1

Mercedes W164 ML320 CDI 4-Matic OM642.920 Engine ECU Kit A6421506100 Key Lock

Product currently unavailable

Part no. A4539050301

Smart Fortwo C453 Interior Temperature Sensor Cable Wiring A4539050301

Product currently unavailable

...

Showing 18910-19008 of 21307 products