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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Volkswagen Transporter T6 BCM Body Control Module 433MHZ ECU 2.0 TDI 7E0937090B

€270.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1175402605

Mercedes C117 Rear Door Wiring Loom Harness Cable Left N/S A1175402605

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6M21-13404-FG-2

Ford Galaxy Mk3 Tail Light Lamp Right O/S Cable Wire Harness Loom 6M21-13404-FG

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9257426

Fuse Box Grouping BMW F10 F11 Fuse Placement Map Card Diagram 9257426

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8483814

BMW G20 Starter Wiring Battery Alternator Cable Harness Loom 8483814

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7835548

BMW 5 6 Series E60 E61 LCI E63 E64 M5 M6 Earth Cable Starter Battery 7835548

€26.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0555452928

Mercedes W204 C207 C209 W212 W222 Engine Wiring Loom Harness Cable A0555452928

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6920469

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6929556

BMW E65 E66 Driver's Seat Air Module Sensor Control Unit Module 6929556

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1439743

BMW E46 X5 E53 E60 E65 X3 E83 Z4 E85 Z3 Cable Alternator Starter 1439743

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 01396660080

Citroën Relay III Relay Boxer Alarm Siren Anti-Theft Signal Moduele 01396660080

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0907383L

Audi A8 D4 Trailer Detection Control Module Unit ECU 4H0907383L

€227.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9160558

BMW 5 Series E60 E60N E61 E61N LCI Airbag ECU Control Unit Module

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7605076

BMW F06 F10 F11 F12 F13 Wiring Harness Cable Engine Ignition Module N55 7605076

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2478207502

Mercedes C118 W177 W243 W247 Centre Console Dual USB-C Socket Ports A2478207502

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 06F903023HX

Volkswagen Golf Mk5 2.0 TFSI Petrol Alternator Generator 06F903023HX

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5N0035342E

VW Volkswagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9339823

BMW X3 G01 G11 G12 G30 G31 Battery Positive Terminal Pint Jump Start 9339823

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2048208526

Mercedes W204 Parking Sensor Parktronic Display Control A2048208526

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AH42-15K603-AA

Range Rover L405 Aerial Antenna Control Unit Keyless Entry AH42-15K603-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3R0907279

Seat Exeo On Board Power Supply Control Unit ECU 3R0907279

€165.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3R0971095

Seat Exeo 3R Front Bumper Wiring Loom Harness Cable 3R0971095

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059006330

Mercedes W205 SAM Module Front Body Comfort Control Unit ECU A2059006330

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8573257-6

BMW F10 F11 520d Diesel N47N 184HP Engine Control Unit ECU DDE 8573257 Automatic

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 059907309L-1

Audi A6 C8 A7 4K 3.0TDI Quattro CCVB 286HP Engine ECU Kit 059907309L Automatic

€408.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2118705726

Air Module Mercedes W211 C219 Air System Control Unit ECU A2118705726

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7627023

BMW F20 F21 F30 Petrol N13 Automatic Gearbox Engine Sensor Module 1 Wiring

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6915327-1

BMW E46 E60 E81 E87 E90 E91 F10 F20 F30 2x Relay Make Contact Sky Blue 6915327

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DT1T14B321AG

Ford Transit Connect Mk2 II Air Module Control Unit ECU DT1T14B321AG

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7640132-2

Alternator BMW F20 LCI F30 Mini F56 F60 Alternator Generator DENSO 180A 7640132

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6821970

Mini Cooper One F54 F55 F56 F60 ECU Body Domain Controller BDC Module 6821970

€237.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5E2857367B

Skoda Octavia Mk3 5E AUX USB Socket Port Console Panel Trim Cover 5E2857367B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5F0035871

Seat Leon 5F MK3 Radio Multimedia Stereo Head Unit 5F0035871

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2115420518

Mercedes W211 W219 Earth Ground Cable Battery Wiring Loom Engine A2115420518

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6M21-13405-FG-2

Ford Galaxy Mk2 Outer Tail Light Lamp Rear Left N/S Harness Loom 6M21-13405-FG

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8617778

Earth Ground Cable BMW i3 I01 Hybrid Rex Electric Engine Wiring 8617778

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8512415-5

Mini Cooper D R56 LCI N47N 112HP Engine ECU Kit DDE 8512415 CAS3 Key Automatic

€161.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7CA971691

VW Volkswagen Crafter Sy Sliding Door Wiring Harness Cable Left N/S 7CA971691

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0038208426

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0937529

Volkswagen Passat B7 Golf Mk6 Relay Repair Plug Wiring Connector Loom 4H0937529

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0907101H

Audi A8 D4 Fuse Box Relay Mounting Board Holder 4H0907101H

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9274428

Mini Cooper F54 F55 F56 F57 F60 PDC Parking Sensor Ultrasonic Black 9274428

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6950525

BMW 3 6 Series E63 E64 E93 DWA Alarm System Module Unit 65756950525 6950525

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DN1T-15K600-CE

Ford Fiesta Mk7 Body Control Module BCM Unit Central Locking DN1T-15K600-CE

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2273171

Ford Fiesta Mk7 Fuel Injector Wiring Loom Harness Cable Connector JX7T-9F666-AC

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2468200664-2

Mercedes W246 Rear Lamp Right O/S Tail Light Harness Wire Loom A2468200664

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9268336

BMW MINI Clubman R55 R55N LCI Cable Adapter Lead Sensor Side Airbag 9207117

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9118468

BMW X5 X6 Series E70 E71 Seat Backrest Adjustment Adapter Lead Cable 9118468

€27.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9335243

Head-Up Display Mini Cooper F54 F55 F56 F57 Hud Project Dash Screen 9335243

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0907468F

Audi A5 8T Gateway Control Module Unit ECU 8T0907468F

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2229001414

Module Mercedes C205 Front Door Left N/S Control Module Unit A2229001414

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. HK72-19C164-ZD

Land Rover Discovery Sport L550 Audio Speaker Amplifier HK72-19C164-ZD

€241.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8H42-10E887-AB

Land Rover Discovery 3 L319 Sat Navi Navigation DVD Drive Reader 8H42-10E887-AB

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9317173

BMW F20 F21 F30 F31 REM Rear Electronic Module Fuse Box Control Unit V1 9317173

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8639583-1

BMW F20 F21 F30 LCI M140i 340i B58 Wiring Harness Motor Sensor Module 8639583

€180.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1775408312

Door Wiring Mercedes W177 W247 Driver Side Cable Harness Loom A1775408312

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9343304

BMW X5 F15 X4 F26 Antenna Aerial Diversity Trap Circuit Control Module 9343304

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0941824

Audi S6 C6 Wirie Cable Fuse Box Holder Support 4F0941824

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8516739-6

Mini SD R56 LCI R60 143HP N47N Engine ECU Kit DDE 8516739 + CAS3 + Key, Manual

€104.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8J0907361

Audi TT 8J Central Electric System Fuse Box Housing Bracket Retainer 8J0907361

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9242204

Wiring BMW F12 F13 F06 Cable Set For Electric Parking Brake Handbrake 9242204

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2218101817-1

Mercedes W221 Headlining Interior Mirror Rear Left Right N/O/S A2218101817

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DV6T-14A073-SM

Ford Transit Connect BCM Body Control Module Fuse Box Unit DV6T-14A073-SM

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2139004709

Mercedes W213 Door Module Rear Left N/S Control Unit A2139004709

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W8035225M

A5 F5 Radio Aerial Antenna Amplifier Booster Module Upper Right O/S 8W8035225M

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1664401606

Mercedes W166 Rear Door Wiring Harness Cable Loom Left Right N/O/S A1664401606

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8P0907115K

Audi A3 8P 2.0 TFSI BWA 200HP Engine Control Unit Module ECU 8P0907115K Manual

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DG9T-9B243-BB

Ford Mondeo Mk5 Rear Body Wiring Harness Fuel Filler Flap Cable DG9T-9B243-BB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2229001306

Mercedes W910 Gearbox Module Transmission Basic Control Unit A2229001306

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9289679

BMW X5 F15 X6 F16 Antenna Amplifier Control Unit Module 9289679

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. YTB500132

Land Rover Discovery 3 L319 Battery Cable Negative Wrinig Harness YTB500132

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5F0945307K-2

Seat Leon Mk3 Cupra Rear Tail Light Lamp LED Wiring Inner Left N/S 5F0945307K

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1507422

Ford Fiesta Mk5 Fuse Box Power Distribution Junction Relay 2S6T-14A073-BC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P5971384J

Porsche Cayenne 92A Seat Backrest Wiring Loom Cable Left Right N/O/S 7P5971384J

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6512011909

Mercedes W212 OM651 Alternator Support Bracket Belt Tensioner Holder A6512011909

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9268438

BMW F10 F11 F01 F02 F03 Crash Impact Air Module Central Sensor Unit 9268438

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0962131-1

Audi A3 8V Q3 F3 VW Golf M7 Antenna Control Module Keyless Entry Line 5Q0962131

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8642705

Mini Cooper F56 B38 136HP Engine Control ECU DME 8642705 Automatic

€227.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8506444-1

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8506444 CAS3 + Key

€332.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 82A945092C-2

Audi A1 GB Sportback Rear Tail Light Wiring Cable Outer Right O/S 82A945092C

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8X0971029D

Audi A1 8X Door Loom Wiring Harness Cable Front Driver Side O/S 8X0971029D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5K4971694BC

VW Volkswagen Golf Gti 5k Door Wiring Loom Connector Rear Right O/S 5K4971694BC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8P0959655J

Audi A3 E 104 T Air Module ECU Sensor Control Unit 8P0959655J

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P0937211A

Porsche Cayenne 92A 3.0 TDI Fuse Box Relay Control Module 7P0937211A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8605454

Engine Wiring BMW F10 F21 F30 LCI F36 N20 Loom Module Harness Cable 8605454

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0945094-2

Audi A5 8T Rear Tail Light Lamp Right O/S Harness Loom Wire Wiring 8T0945094

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009069905

Mercedes W205 W213 Engine Alternator Generator M264 Petrol A0009067703

€161.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6751504

Module Holder BMW X5 E53 Rear Tyre Pressure Control Module Mount Bracket 6751504

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V5971687Q

Audi A3 8V Door Wiring Harness Loom Rear Left Right N/O/S 8V5971687Q

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F1971036A

Audi A6 C6 Front Passenger Door Wiring Left N/S Harness Loom Cable 4F1971036A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9118467

BMW X5 X6 Series E70 E71 Seat Backrest Adjustment Adapter Lead Cable 9118467

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0907801E

AUDI A7 4G8 Electric Handbrake Control Module TRW 4H0907801E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129009505

Mercedes W212 PDC Parking Distance Control Unit Module Sensor A2129009505

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AV1T-14A584-CDD

Ford B-Max Door Loom Wiring Harness Cable Driver Side Front AV1T-14A584-CDD

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8P0862335S

Audi S3 8P Interface Bluetooth Control Module Harman Becker ECU 8P0862335S

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W0915181A

Audi A5 F5 HV Battery Negative Cable Terminal 8W0915181A

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-17509-AC

Range Rover Evoque L538 Control Unit Module BJ32-17509-AC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A9078201200

Mercedes Sprinter W907 Wiring Connector Cable Plug Terminal Housing A9078201200

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2139005213

Mercedes W213 Door Control ECU Module Front Left N/S A2139005213

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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