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 E60 E61 E63 E85 Air Module Control Unit Module ECU ACSM 9145400

Product currently unavailable

Part no. 6874797

BMW F25 VDC1 Suspension Control Module Unit ECU 6874797

Product currently unavailable

Part no. 2095989

Ford Focus Mk3 Rear Door Control Module Door Left Right N/O/S BV6N-14B532-BJ

Product currently unavailable

Part no. 7640005-8

Mini Cooper R56 N12 1.6 120HP ECU Kit Engine DME 7640005 + CAS3 + Keys Manual

Product currently unavailable

Part no. 6961142

BMW X5 E53 Light Check Module Control Unit ECU Lear LCM IV LWR 6961142

Product currently unavailable

Part no. 9362445

BMW F20 F21 F22 Audio Amplifier Harman Kardon Active Sound Design Unit 9362445

Product currently unavailable

Part no. 1729981

BMW 5 7 X5 Series E34 E38 E39 E53 Petrol Starter Motor 1729981

Product currently unavailable

Part no. 5Q0937125A-1

Audi TT 8J A3 8V VW Golf Mk7 Fuse Relay Box Engine Bay Supply Unit 5Q0937125A

Product currently unavailable

Part no. 7852338

Ventilation Valve BMW F90 M5 F91 M8 S63M Fuel Tank Pipe Cyl. 5-8 7852338

Product currently unavailable

Part no. 8610635-1

BMW F20 F30 F32 120i 320i 420i N20 184HP ECU Kit DME 8610635 + Key + FEM Manual

Product currently unavailable

Part no. 7H0919506D

VW Transporter T5 Engine Cooling Radiator Fan Control Unit Module 7H0919506D

Product currently unavailable

Part no. A2115407545

Mercedes W211 Central Gateway Control Unit Module Relay ECU A2115407545

Product currently unavailable

Part no. A2641591400

Ignition Coil Mercedes W177 M260 Petrol Ignition Cable Connector A2641591400

Product currently unavailable

Part no. 8P4971030K

Audi A3 8P Cable Door Harness Wiring Loom Passenger Front Left N/S 8P4971030K

Product currently unavailable

Part no. 6933514

BMW E46 PDC Cable Wiring Harness Loom Rear Bumper 6933514

Product currently unavailable

Part no. 8486560

BMW F40 Steptronic Double Clutch Gearbox Transmission Control Module 8486560

Product currently unavailable

Part no. A0009828123

Mercedes W906 Starter Terminal Relay 12V A0009828123

Product currently unavailable

Part no. 8J0907115N

Audi TT 8J 2.0 TFSI BWA 200HP Engine Control Module ECU Manual 8J0907115N

Product currently unavailable

Part no. 6943830

Key Reading Module BMW E60 E87 E90 CAS 3 ECU Control Unit 6943830

Product currently unavailable

Part no. 6920461

BMW E60 E61 E63 E65 Amplifier Stereo HiFi Harman/Becker 6920461

Product currently unavailable

Part no. 6943833

BMW X5 E70 CAS3 Control Unit Key Reading Module 6943833

Product currently unavailable

Part no. 7599881-6

BMW E81 E87 LCI 116i 1.6 Petrol N43 122HP ECU Kit DME 7599881 CAS3 Key Manual

Product currently unavailable

Part no. AG9N-10C679-DD

Ford Mondeo Mk4 Negative Battery Terminal Cable 2.0 TDCi AG9N-10C679-DD

Product currently unavailable

Part no. 9S7J-14D466-CCE

Ford Mondeo Mk4 Rear View Camera Wiring Harness Cable 9S7J-14D466-CCE

Product currently unavailable

Part no. 7568842-5

BMW E60 E61 E90 E91 E92 N54 306HP Engine Control Unit DME ECU 7568842 Manual

Product currently unavailable

Part no. 9230445-2

BMW 3 Series E92 Footwell Light Control Module Max Brose Lear FRM3R PL2 9230445

Product currently unavailable

Part no. 9230617-1

BMW F10 F11 Seat Loom Cable Lordosis Lumbar Pump Control Front Right O/S 9230617

Product currently unavailable

Part no. 7812500-5

BMW E60 E61 LCI 520d N47 Diesel Engine Control Unit ECU DDE 7812500 Manual

Product currently unavailable

Part no. 03N907309

VW Tiguan Mk2 Engine Control Module Unit ECU 2.0 Diesel CUAA 03N907309 Automatic

Product currently unavailable

Part no. 7LA971158A

VW Volkswagen Transporter T6 Battery Wiring Harness Cable 7LA971158A

Product currently unavailable

Part no. 7580279-1

BMW E81 E87 LCI E90 E91 118i 318i N43 143HP Engine ECU DME 7580279 Automatic

Product currently unavailable

Part no. A1635402810

Mercedes-Benz M ML W163 OM612 Engine Wiring Harness Loom Cable A1635402810

Product currently unavailable

Part no. 09D927750HT

Audi Q7 4L Automatic Transmission Gearbox Control Unit Module 09D927750HT

Product currently unavailable

Part no. 8J0907115AJ

Audi TT Mk2 8J 2.0 TFSI CESA 211HP Engine Control Unit ECU 8J0907115AJ Automatic

Product currently unavailable

Part no. 7E0971072FH

Volkswagen Transporter T5 Alternator Starter Wiring Loom Harness 7E0971072FH

Product currently unavailable

Part no. GN15-14B006-AA

Ford Transit Mk8 Fiesta Mk8 Crash Impact Sensor Air Module GN15-14B006-AA

Product currently unavailable

Part no. A6461541102-2

Alternator Generator Mercedes Vito W639 Sprinter W906 14V 180A Valeo A6461541102

Product currently unavailable

Part no. A2129009328

Door Module Mercedes W204 W212 Front Right O/S Control Unit A2129009328

Product currently unavailable

Part no. 5Q0906121N

VW Volkswagen Golf 5g R 5G Fuel Pump Control Module ECU 1.6 TDI 5Q0906121N

Product currently unavailable

Part no. 9149080-2

BMW Mini Cooper R57 R57N LCI 2 Cabrio Aerial Roof Antenna Base 9149080

Product currently unavailable

Part no. A1408201426

Mercedes W140 Seat Memory Control Unit Module Front Left N/S A1408201426

Product currently unavailable

Part no. 7794650

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

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. 9114356

BMW E60 Dashboard Dash Onboard Display Monitor Screen 8.8" CCC

Product currently unavailable

Part no. 55568896

SAAB 9-3 1.9 TTiD ECU DDE Engine Control Unit Module 55568896

Product currently unavailable

Part no. 6980130

Module ULF BMW X3 X5 E53 E83 E87 Hands Free Bluetooth Charging 6980130

Product currently unavailable

Part no. 4F0907289N

Audi A6 C6 Body Control Comfort Unit Module BCM Unit ECU 4F0907289G

Product currently unavailable

Part no. 81A919604B

Audi Q2 GA Multimedia Multifunction Sat Nav Radio Display Screen 81A919604B

Product currently unavailable

Part no. 8513250-3

BMW F10 F11 520d Diesel N47N 184HP Engine ECU Kit DDE 8513250 CAS4 Key Automatic

Product currently unavailable

Part no. 7610009-1

Mini Cooper S R56 N14 1.6 174HP ECU Kit DME CAS 3 Key 7610009 Manual

Product currently unavailable

Part no. 5WA035284F

VW Volkswagen Golf Mk8 Online Services Module Control Unit ECU 5WA035284F

Product currently unavailable

Part no. 6950089

BMW E81 E87 E90 Hands Free Electronics Charging Bluetooth Module MULF 6950089

Product currently unavailable

Part no. 9809260680

Peugeot 408 Tailgate Release Opener Sensor Module Control Unit 9809260680

Product currently unavailable

Part no. 6834091

BMW F87 F80 F82 Audio Amplifier Harman Becker Active Sound Design System 6834091

Product currently unavailable

Part no. 03L903024M-1

Volkswagen Tiguan 5N Golf Mk5 Audi A3 8P Alternator Generator Diesel 03L903024M

Product currently unavailable

Part no. 04E907309A-3

Audi A3 8V 1.4 TFSI CMBA 122HP Engine Control Unit ECU Manual 04E907309A

Product currently unavailable

Part no. 7E0919475T

Volkswagen Transporter T6 PDC Parking Assist Aid Control Module 7E0919475T

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. 7E0937617

Volkswagen Transporter T5 Fuse Box Control Module Unit 7E0937617

Product currently unavailable

Part no. A2139000814

Mercedes W205 W213 C238 Tailgate Lift Boot Lid Control Unit Module A2139000814

Product currently unavailable

Part no. 4F0907289E

Audi A6 C6 Comfort Convenience System Control Module Unit ECU 4F0907289E

Product currently unavailable

Part no. 8470176-7

BMW F21 LCI Engine Control Unit ECU 2.0 Diesel B47D20A 150 HP Manual 8470176

Product currently unavailable

Part no. A6401501891-1

Mercedes W169 W245 A200 B200 CDI OM640.941 140HP Engine ECU Kit Key A6401501891

Product currently unavailable

Part no. BK2T-15K868-BB

Ford Transit Custom Rear Parking Sensor Wiring Loom PDC BK2T-15K868-BB

Product currently unavailable

Part no. A2118208285

Mercedes W211 Door Module Front Right O/S Driver Control Unit ECU A2118208285

Product currently unavailable

Part no. A6461501077-2

Mercedes Vito W639 OM646.980 116HP Engine ECU Control Set A6461501077 Manual

Product currently unavailable

Part no. 9389656

BMW F80 M3 F82 M4 F20 F21 Reversing Camera Connecting Wiring Line Cable 9389656

Product currently unavailable

Part no. A2711540902-1

Alternator Generator Mercedes W203 W209 Engine M271 120A 14V A2711540902

Product currently unavailable

Part no. 8P0035186AB-1

Audi A3 8P Multimedia Radio CD Player Head Unit 8P0035186AB

Product currently unavailable

Part no. 4M0971228CH

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

Product currently unavailable

Part no. A4479058203

Mercedes Vito W447 Radio Remote Control Alarm Key Fob Unit A4479058203

Product currently unavailable

Part no. A2035454601

Mercedes W203 A209 Fuse Box Central Electrics Control Unit Module A2035454601

Product currently unavailable

Part no. 8674691

BMW 3 F30 LCI 330e Hybrid KLE Convenience Charging Control Unit ECU 8674691

Product currently unavailable

Part no. A2059008204

Mercedes W205 SAM Module Fuse Box Relay Control Unit A2059008204

Product currently unavailable

Part no. 5K4971693BC

Volkswagen Golf Mk6 Door Wiring Loom Harness Connector Rear Left N/S 5K4971693BC

Product currently unavailable

Part no. 9160186

BMW 3 Series E92 ECU Body Control Module Junction Box L1 PL2 JBBFE II 9160186

Product currently unavailable

Part no. 1393415-3

BMW E90 E91 F10 Mini R50 R52 Change Over Contact Relay Grey 5 Pins Set 1393415

Product currently unavailable

Part no. 04E907309AF

Volkswagen Polo 5 6R 1.2 TSI CJZC 90HP ECU Engine Control 04E907309AF

Product currently unavailable

Part no. 8T0945221

Audi A5 8T Rear LED Light Bulb Carrier Harness Cable Left Right N/O/S 8T0945221

Product currently unavailable

Part no. 6957343

BMW 3 5 Series E60 E90 Dashboard Onboard Monitor Display Screen 8.8 CCC 6957343

Product currently unavailable

Part no. A2711500391-12

Mercedes W204 C207 W212 M271.820 156HP Engine ECU Kit A2711500391 Automatic

Product currently unavailable

Part no. A1669008606-1

Seat Module Mercedes W176 W246 Front Left N/S Memory Control Unit A1669008606

Product currently unavailable

Part no. 8510829

BMW E90 E91 LCI N47N 320ed 320d ed 163HP ECU Engine Control DDE 8510829 Manual

Product currently unavailable

Part no. 8E0937503

Audi A4 B6 B7 Seat Exeo Fuse Relay Box Holder Board 8E0937503

Product currently unavailable

Part no. A1645400672

Mercedes ML W164 Fuse Box Relay Module Front Control Unit Module A1645400672

Product currently unavailable

Part no. A2741501802

Mercedes W213 Engine Wiring Harness Cable Loom A2741501802

Product currently unavailable

Part no. 8516753

BMW F01 730d N57 245HP Engine Control Unit ECU Module DDE 8516753 Automatic

Product currently unavailable

Part no. A2118208185

Mercedes W211 Door Module Front Left N/S Driver Control Unit ECU A2118208185

Product currently unavailable

Part no. 9289614

BMW F10 F11 F20 F21 F30 F31 F32 Navigation DAB Head Unit High 9289614 9290361

Product currently unavailable

Part no. A6519007600-2

Mercedes W176 A200 CDI BlueEFFICIENCY OM651.901 Engine Module ECU A6519007600

Product currently unavailable

Part no. 4G0919475H

Audi A6 A7 4G8 A8 RS6 Parking Aid PDC Control Unit Module ECU 4G0919475H

Product currently unavailable

Part no. 5WA937125A

Volkswagen Golf Mk8 Audi S3 8Y Skoda Octavia MK4 VRS Fuse Relay Box 5WA937125A

Product currently unavailable

Part no. 9176686-1

BMW 3 X3 X5 E46 E53 E83 Mini R50 DVD GPS Navigation System Computer Unit DAMAGE

Product currently unavailable

Part no. 93867998

Vauxhall Vivaro B Radio Stereo Head Unit Mount Bracket Holder Support 93867998

Product currently unavailable

Part no. 06B903016AF

Audi A3 8P A4 B7 TT 8J Alternator Generator 140A 14V FSI TFSI Petrol 06B903016AF

Product currently unavailable

Part no. A2469067901-1

Battery Positive Mercedes C117 W176 W246 Plus Pole Terminal Lead A2469067901

Product currently unavailable

Part no. 3457168

Mini Cooper R58 Fuse Distribution Box PL3 SPEG H8 DC/DC 3457168

Product currently unavailable

Part no. 5E0919605M

Skoda Octavia Mk3 5E Multifunction Display Screen Control Unit 5E0919605M

Product currently unavailable

Part no. 6Q0909606K

Volkswagen Polo Mk4 Skoda Fabia Seat Leon Mk1 Front Impact Sensor 6Q0909606K

Product currently unavailable

...

Showing 16435-16533 of 22739 products