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

BMW E81 Footwell ECU Light Control Module MAX Kuester FRM3R 6827065

Product currently unavailable

Part no. A1779002107

Door Module Mercedes CLA C118 W177 Front Door Right O/S Control Unit A1779002107

Product currently unavailable

Part no. 9678048880

Alternator Generator Peugeot 208 308 Partner Diesel 12V 9678048880

Product currently unavailable

Part no. 9129850

BMW X3 X5 Series E83 E53 Telematics Control Unit Module 9129850

Product currently unavailable

Part no. 7N0906093

Fuel Pump Module VW Volkswagen Sharan 7N Fuel Sender Control Unit ECU 7N0906093

Product currently unavailable

Part no. 3D0941329B

Volkswagen Passat B7 Headlight Cornering Module Control Unit 3D0941329B

Product currently unavailable

Part no. 191937503

VAG VW Volkswagen Audi Seat Skoda Relay Unit 4 Pins 12V 40A 191937503

Product currently unavailable

Mercedes W176 W204 C207 W212 C218 W246 Relay 4-Pin Black Hella 12V A0025428319

-5%

Part no. A0025428319

Mercedes W176 W204 C207 W212 C218 W246 Relay 4-Pin Black Hella 12V A0025428319

Product currently unavailable

Part no. A1779002410

Mercedes W177 Air Module SRS System Control Unit ECU A1779002410

Product currently unavailable

Part no. 03F971612

VW Volkswagen Polo 1.2 TSI CBZB Engine Wiring Harness Cable Loom 03F971612

Product currently unavailable

Part no. 9505275

BMW F40 F45 X1 F48 Mini F55 F56 Control Unit SAS Module ECU 9505275

Product currently unavailable

Part no. 8Y0959760

Audi S3 8Y Front Seat Control Module Unit Left N/S 8Y0959760

Product currently unavailable

Part no. A2074400208

Mercedes C207 Parking Sensor Wiring Loom Cable Harness Front PDC A2074400208

Product currently unavailable

Part no. 9130160

BMW X6 E71 Antenna Amplifier Diversity Control Unit Module 868 MHZ 9130160

Product currently unavailable

Part no. 9366413

FEM Module BMW F20 F21 F22 F30 F32 ECU Control Unit Fuse Box 9366413

Product currently unavailable

Part no. 1437967

BMW E46 M43 Engine Wiring Loom Harness Ignition Module Cable 1437967

Product currently unavailable

Part no. 2241253-SGM

BMW 7 E65 E66 Rear Bumper PDC Ultrasonic Sensor Schiefergruen Slate Green 449

Product currently unavailable

Part no. 6946107

BMW 7 Series E65 E66 Driver Seat Airbag Sensor Control Unit Module 6946107

Product currently unavailable

Part no. 6926318

BMW E93 Door Wiring Harness Loom Cable 6926318

Product currently unavailable

Part no. 9294309-1

BMW X3 F25 X4 F26 Dashboard Monitor Onboard Central Display Screen 6,5" 9294309

Product currently unavailable

Part no. 074903018A

Volkswagen Sharan Touareg 7L Seat Alhambra Alternator Generator 074903018A

Product currently unavailable

Part no. 6G9N-19G229-DF

Land Rover Range Rover L322 Anti Theft Alarm Siren 6G9N-19G229-DF

Product currently unavailable

Part no. 9227178-1

BMW 3 Series E92 ECU Body Control Module Junction Box L1 PL2RR JBBFE 9227178

Product currently unavailable

Part no. 7545150-1

BMW X5 E53 3.0i M54 231HP ECU Engine Kit DME 7545150 Automatic Key EWS

Product currently unavailable

Seat Module BMW E60 E61 E65 E66 Front Seat Control Unit Module ECU 6927312

-15%

Part no. 6927312-1

Seat Module BMW E60 E61 E65 E66 Front Seat Control Unit Module ECU 6927312

Product currently unavailable

Part no. 1025-03-1

BMW F32 GPS Navigation Display Screen Android Auto CarPlay 10,25"

Product currently unavailable

Part no. 5A7A3B9

BMW U06 X1 U11 Gearbox Wiring Loom Transmission Cable 5A7A3B9

Product currently unavailable

VW Volkswagen Golf MK6 Body Control Comfort Unit Module BCM 1K0937084F

-2%

Part no. 1K0937084F

VW Volkswagen Golf MK6 Body Control Comfort Unit Module BCM 1K0937084F

Product currently unavailable

Part no. 9280616

BMW F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM ECU LR01 9280616

Product currently unavailable

Part no. 7561684-7

BMW Z4 E85 2.5si N52 218HP Engine ECU Control Unit DME 7561684 Manual

Product currently unavailable

Part no. A2049009907

Mercedes W204 Navigation Radio Player Head Unit Hazard Seat Switch A2049009907

Product currently unavailable

Part no. A2045400608

Mercedes W204 Front Bumper PDC Wiring Parking Loom Harness A2045400608

Product currently unavailable

Part no. 9393669

BMW F11 LCI Comfort Module Body Control Unit Module BCM Unit ECU 9393669

Product currently unavailable

Part no. LR047569-1

Range Rover Evoque L538 Positive Plus + Battery Cable Lead LR047569

Product currently unavailable

Part no. 9807885980

Citroen Dispatch Jumpy III 9HM DV6UC 1.6 Diesel Engine Module ECU 9807885980

Product currently unavailable

Part no. 9281518

BMW F20 F21 F22 F30 Radio Professional CD Bluetooth Headunit Control 9281518

Product currently unavailable

Part no. 9136874

Mini Cooper R55 R56 R60 CAS 3 ECU Control Unit Key Reading Module 9136874

Product currently unavailable

Part no. 1H0953227

Audi Seat Volkswagen Polo 6N Turn Signal Hazard Light Relay 191 1H0953227

Product currently unavailable

Part no. L8D2-10C679-AA

Range Rover Evoque L551 Battery Management System Sensor Control L8D2-10C679-AA

Product currently unavailable

Part no. 7075943-5

BMW 5 7 X5 Series 5 E60 E61 E65 E70 Front Left Seat Height Adjustment Drive N/S

Product currently unavailable

Part no. 8506281-3

BMW E81 E87 LCI E90 N47 115HP Diesel Engine Control Unit ECU DDE 8506281 Manual

Product currently unavailable

Part no. 8652746

Mini Cooper S R60 ALL4 N18 1.6 184HP ECU Engine Control Unit DME 8652746 Manual

Product currently unavailable

Part no. 9119495

BMW E92 ECU Body Control Module Junction Box L1 PL2 JBBFE 9119495

Product currently unavailable

Part no. 7527610-4

Mini Cooper S R53 W11 170HP Engine Control Unit ECU Kit DME 7527610 Manual

Product currently unavailable

Part no. 1Y0959255C

Volkswagen New Beetle Convertible Roof Control Module Control Unit 1Y0959255C

Product currently unavailable

Part no. H1BT-15K868-ABE

Ford Fiesta Mk8 Rear Bumper Parking Sensor Wiring Loom Harness H1BT-15K868-ABE

Product currently unavailable

Part no. 9363557

Mini F55 F56 Central Cover Information Instrument Radio 8,8" 9367675

Product currently unavailable

Part no. A6461540002

Mercedes Sprinter W906 OM646 Engine Diesel Alternator Generator A6461540002

Product currently unavailable

Part no. A2219007301

Mercedes W221 Front Door Control Left N/S Module Unit ECU A2219007301

Product currently unavailable

Part no. 4E0910553L

Audi A8 4E S8 D3 Adaptive Air Suspension Control Module 4E0910553L

Product currently unavailable

Part no. 6955346

M-Audio Controller BMW E60 E61 E63 E64 Radio Player M-ASK CD Head Unit 6955346

Product currently unavailable

Part no. 7579142-17

BMW E87 LCI 116i E90 316i N43 122HP Engine Control Unit ECU DME 7579142 Manual

Product currently unavailable

Part no. 4K0919390B

Audi A6 C8 Door Panel LED Module Light Unit Front Right O/S 4K0919390B

Product currently unavailable

Part no. 0AH911023A

VW Volkswagen Touran 1T 1.2 TFSI CBZB Starter Motor 0AH911023A

Product currently unavailable

Part no. 02Z911023L

Audi R8 Gen 1 Engine Starter Motor 4.2 FSI 02Z911023L

Product currently unavailable

Part no. 8P0919475D

Audi A3 8P Parking Distance Sensor Control Unit Module Rear 8P0919475D

Product currently unavailable

Part no. 7531992

BMW X5 E53 3.0i M54 Wiring Loom Harness Engine Automatic Gearbox 7531992

Product currently unavailable

Part no. 2241239-SGM

BMW 7 E65 E66 Front Bumper PDC Ultrasonic Sensor Schiefergruen Slate Green 449

Product currently unavailable

Part no. 3C0937049D

Volkswagen Golf Mk5 Skoda Octavia Mk2 BCM Body Control Module ECU 3C0937049D

Product currently unavailable

Part no. 6924555

BMW 7 Series E65 E66 Driver's Seat Airbag Sensor Control Unit Module

Product currently unavailable

Part no. 9126251

BMW X5 E53 Navigation System Video Module Control Unit High 9126251

Product currently unavailable

Part no. 7850609

BMW F80 M3 F82 M4 LCI Cable Wheel Acceleration Sensor 7850609

Product currently unavailable

Part no. 4M0971228CH

Audi Q7 4M Alternator Mass Cable Wiring Harness Loom 4M0971228CH

Product currently unavailable

Part no. 5A243F5

BMW F70 G60 U06 Rear Ultrasonic Sensor Parking PDC Portimao Blue C31 5A243F5

Product currently unavailable

Part no. A1649004400

Sam Module Mercedes ML W164 Rear Relay Box Control SAM Unit A1649004400

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. 5Q0035842C

Skoda Superb 3V Octavia 5E CD Radio Head Unit SD Card Bluetooth 5Q0035842C

Product currently unavailable

Part no. 8699973

BMW F80 M3 F82 M4 S55 450 HP Engine Control Unit ECU DME 8699973 Dual Clutch

Product currently unavailable

Part no. 24445098

Opel Astra Vectra Zafira Immobilizer Antenna Immobilizer Module Unit 24445098

Product currently unavailable

Part no. 04E907309G

VW Golf 5G 140HP Engine ECU + BCM + Key Kit Set 1.4 Petrol 04E907309G

Product currently unavailable

Part no. 9177987

BMW E91 ECU Body Control Module H4 Electronic Box 61359177987 9177987

Product currently unavailable

Part no. A1695420518-HBL

Mercedes W245 Front Bumper Parking Distance Sensor Parktronic Horizon Blue 391

Product currently unavailable

Part no. A0009053303

Radar Sensor Mercedes W204 C117 Rear Blind Spot Right left N/O/S A0009053303

Product currently unavailable

Part no. 7512079

BMW 3 Series E46 Petrol Wiring Loom Harness Engine Gearbox Module 7512079

Product currently unavailable

Part no. A2118220114

Mercedes E CLS Class W211 W219 Bracket Anti Tow Away Sensor Bracket A2118220114

Product currently unavailable

Part no. 6Q1937049B

VW Polo 9N Seat Body Control Comfort Unit Module BCM Convenience Unit 6Q1937049B

Product currently unavailable

Part no. 5Q0971277

Volkswagen Golf Mk7 5G Cooling System Coupling Adapter Wiring Harness 5Q0971277

Product currently unavailable

Part no. 7794650

BMW E60 E61 525d Diesel M57N 177HP Engine Control ECU Module DDE 7794650

Product currently unavailable

Part no. 8586141

BMW F20 F21 F30 116d 120d 316d 320d N47N Wiring Harness Engine Module 8586141

Product currently unavailable

Part no. 9314235-1

BMW F30 Fuse Box Relay Control Unit Module 9314235

Product currently unavailable

Part no. 6770600

Mini R55 R56 Gearbox Clutch Cylinder Control Cylinder Unit 6770600

Product currently unavailable

Part no. A2129005722-1

Mercedes W204 SAM Module Fuse Box Relay Control Unit A2129005722

Product currently unavailable

Part no. A2139007839

Mercedes W167 W177 W247 Headlight Ballast Control Module Left N/S A2139007839

Product currently unavailable

Part no. 7575875-3

BMW E90 E91 E92 335i 306HP Engine N54 ECU Kit DME 7575875 + CAS3 + Key Automatic

Product currently unavailable

Part no. 8T0959795C

Audi A5 8T Rear Door Control Module Unit Left Right N/O/S 8T0959795C

Product currently unavailable

Part no. 9160189-1

BMW 1 Series E87 1 ECU Body Control Module Junction Box H2 PL2 JBBFE II 9160189

Product currently unavailable

Comfort Module Audi A6 S6 RS6 C6 4F Convienience Unit ECU 4F0910289N

-5%

Part no. 4F0910289N

Comfort Module Audi A6 S6 RS6 C6 4F Convienience Unit ECU 4F0910289N

Product currently unavailable

Part no. 8X0919475AB

Audi RS Q3 8U PDC Parking Sensor Control Unit Module 8X0919475AB

Product currently unavailable

Part no. 7797661-3

BMW X3 X5 E53 E83 M57N2 Alternator Generator Diesel Power 150A 7797661

Product currently unavailable

Part no. 06M911021

Audi S4 B9 S5 F5 Starter Motor Engine Actuator Bosch TFSI Petrol 06M911021

Product currently unavailable

Part no. DS7T-19G317-BJ

Ford Ranger Mk6 Power Control Module Inverter Distribution Unit DS7T-19G317-BJ

Product currently unavailable

Part no. RHD-CK52-14A205-FD

Range Rover L405 Ambient Lighting Door Wire Wiring Left N/S CK52-14A205

Product currently unavailable

Part no. 93868139

Renault Trafic III Opel Vivaro B Air Module Control Unit ECU 93868139 985101902R

Product currently unavailable

Part no. 04C903021A

Volkswagen Golf Sportsvan 1.5 TSI Alternator Valeo 14V 140A 04C903021A

Product currently unavailable

Part no. 03L906018LB

Audi A6 C7 2.0 TDI CGLC 177HP Engine Control Unit ECU 03L906018LA Automatic

Product currently unavailable

Part no. A0009060205

Mercedes W213 C238 Petrol Alternator Generator A0009060205

Product currently unavailable

Part no. 6G9T-14A067-AB

Ford S-Max Mondeo Mk4 Fuse Distribution Box Electrical Unit 6G9T-14A067-AB

Product currently unavailable

Part no. A4479009509-1

Mercedes W447 Comfort Control Unit Module A4479009509

Product currently unavailable

Part no. 6840399-1

Head Unit BMW F20 F21 F22 F30 F31 Radio CD Navigation GPS 6840399

Product currently unavailable

...

Showing 14158-14256 of 21551 products