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

Mercedes W204 W207 W212 W221 Starter Motor A6429060900

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6M5T-F221050-CA

Ford Kuga C394 Windscreen Washer Wiring Loom Harness Cable 6M5T-F221050-CA

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1487246

Mini R50 R52 R53 Engine Block Ping Knock Sensor Petrol 1487246

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A374F9

BMW F40 Radio CD Player Head Unit Navigation Sat Nav CIC Alpine 5A374F9

€450.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6519007401-11

Mercedes W212 E250 CDI Engine Control Module ECU 170 HP SET Manual A6519007401

€170.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8736251

BMW X4M F98 X4 G02 X3 G01 Rear Fuse Box Power Distribution Fuse Box 8736251

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P5971384AA

Porsche Cayenne S 92a Seat Wiring Harness Loom Cable Front Right O/S 7P5971384AA

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2129005101

Fuse Box Mercedes W212 Rear SAM Relay Fuse Box Control Module A2129005101

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1J0971839A

Audi A3 8L TT 8N Engine Bay Wiring Harness Loom Cable Guide Holder 1J0971839A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 46867282

Vauxhall Movano C Electric Wire Harness Loom Cable Wiring Connector 46867282

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. N000000004325-1

Mercedes W169 W204 W211 C219 Replacement Fuse Kit Set N000000004325

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. V23136-B1001-X51

Land Rover Range Rover Evoque L538 4-Blade Relay 40A 12V V23136-B1001-X51

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A717D2

Mini F66 F67 Interior Wiring Loom Harness Cable 5A717D2

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8473185-7

Mini F56 Cooper SD B47 170HP Engine ECU Kit DDE 8473185 FEM 2 Keys Manual

€379.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7075944-2

BMW E60 E65 E70 Front Right Seat O/S Height Adjustment Drive 7075944

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03C906026J

Skoda Fabia Mk2 1.4 TSI 180HP Engine Control Unit ECU Kit 03C906026J Automatic

€213.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 059971627R

Audi S5 F5 A6 C8 Engine Wiring Harness Loom Harness 3.0 TDI DDVB 059971627R

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. ET7T18B955BB

Ford Fiesta Mk7 Dashboard Display Multifunction Screen Monitor ET7T-18B955-BB

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9282069

BMW 5 Series F10 F11 Cable Loom Front Driver's Door Wiring Harness 9255986

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6937229

BMW E65 E66 Light Module Control Unit Left N/S 6937229

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1185405713

Mercedes CLA C118 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1185405713

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L911024

Audi A4 B8 A5 8T Diesel 2.0 TDI Starter Motor Manual 03L911024

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0971230BC

Audi A3 8V Battery Cable Starter Alternator Wiring Harness 5Q0971230BC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9189905

BMW X5 E70 X6 E71 Safety Control Unit Air Module Bag ECU Bosch 9189905

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6873418

BMW 1 2 Series F20 F21 F30 Brake Disc Protection Plate Front Right O/S 6873418

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8578995-1

BMW F10 520d F20 320d N47N 184HP Engine Module Unit ECU DDE Kit 8578995 Key CAS4

€170.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8620771

BMW F20 F21 F30 F32 N55 Power Distribution Module Bracket Cover Carrier 8620771

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. YMC000610

Land Rover Freelander L314 Air Module Sensor Control Unit 8H22-14D374-AD

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1648207789

Mercedes W164 Aerial Antenna Amplifier A1648207789

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9107381

Mini F54 Kafas Camera Control Module Unit ECU 9107381

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2515408635

Mercedes R320 W251 Positive Plus + Battery Wiring Harness Cable A2515408635

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. RK72-19C164-HA

Land Rover Range Rover Evoque L551 Sound Amplifier Module Unit RK72-19C164-HA

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. N9D3-14D620-AA

Range Rover Velar L560 Door Control Module ECU Rear Right O/S N9D3-14D620-AA

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2038219751

Mercedes C-Class W203 Roof Alarm Motion Sensor Cover Trim Grey A2038219751

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3451658

BMW 3 X3 Series E46 E83 LCI Earth Cable Flow Electric Battery Negative 6919584

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8J0907115N-3

Audi TT 8J Engine ECU Ignition + Key Kit 2.0 TFSI BWA 200HP Automatic 8J0907115N

€180.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7E0937545A

Volkswagen Transporter T5 Main Fuse Socket Connector Housing Bracket 7E0937545A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8844293

BMW X1 U11 High-Voltage Battery Module Connector Wiring Harness Cable 8844293

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P5035209

Porsche Cayenne 92A Amplifier Control Unit Module Mount Bracket 7P5035209

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1695403945-1

Mercedes W169 W245 Central Gateway Control Unit Module ECU A1695403945

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C8937049AC-1

Volkswagen Tiguan 5N Module BCM Body Control Unit Module ECU 3C0937049E

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9192666

BMW F01 F10 F11 Cover Positive B Battery Terminal Point Case 9192666

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. JK2T-19L540-AA

Ford Transit Custom Load Door Wiring Harness Loom Left N/S JK2T-19L540-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. K1BT-14F642-AB

Ford Fiesta Mk8 Port Data Link Module OBD Smart Link Control Unit K1BT-14F642-AB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. E1BT-14K012-PDB

Ford Fiesta Mk7 Engine Fuse Box Control Unit Module E1BT-14K012-PDB

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6J4971161E

Seat Ibiza Mk4 Door Wiring Front Rear Right O/S Harness Loom Cable 6J4971161E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2741504704

Mercedes X253 Engine Wiring Harness Line Supply Line A2741504704

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 913463601

Seat Module BMW E65 Front Seat Control Unit Module ECU 913463601

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4K5035225P

Audi A6 C8 Aerial AMP Antenna Amplifier Module Control Unit 4K5035225P

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8367769

BMW X3 Series E83 Battery cable holder mounting parts B Base 8367769

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CPLA-18C858-DC

Range Rover L405 Touch Screen Display Pad Left N/S CPLA-18C858-DC

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2128204585

Mercedes-Benz A B W176 W246 Glove Box Aerial Antenna Booster Amplifier

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1720325

Ford Ranger Mk3 2.2 TDCI Diesel Starter Motor AB39-11000-AA

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7PP907357G

Porsche Macan 95B Headlight Control Module Unit Hella 7PP907357G

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L0915138C

Audi Q7 4L Battery Mounting Bracket Part Holder 7L0915138C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 99661826501

Porsche Boxster 986 911 996 Alarm Siren Signal Control Tilt Relay 99661826501

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0971230KC

Audi Q2 GA Alternator Wiring Loom Harness Cable 5Q0971230KC

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2055407816

Mercedes W205 2.2 Diesel Negative Earth HV Battery Cable Lead Wire A2055407816

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HK62-15B484-DA

Range Rover Sport L494 Rear Bumper Parking Sensor Wiring Loom HK62-15B484-DA

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7616500

BMW E90 E91 E92 N52 N52N Engine Starter Motor Valeo 7616500

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7520019

Mini Cooper One R50 Petrol W10 W11 Engine Control Unit DME 7520019 Automatic

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6C0915423

Volkswagen Polo 6R Mk5 Battery Terminal Overload Protection Fuse 6C0915423

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DT1T-18D815-FD

Ford Transit Connect Mk2 Radio Stereo Head Unit Control Panel DT1T-18D815-FD

€80.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P6971121D

VW Volkswagen Touareg 7P Front Door Wiring Harness Passenger's Side 7P6971121D

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 82A945093C-2

Audi A1 GB Rear LED Tail Light Lamp Wiring Plug Cable Left N/S 82A945093C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K8971104D

Volkswagen Scirocco III Rear Number Plate Wiring Harness Cable Loom 1K8971104D

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0906121L

Volkswagen Golf Mk7 Fuel Pump Control Module ECU 2.0 TDI 5Q0906121L

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6C11-12A650-AL-1

Ford Transit MK7 2.2 TDCI 86 HP Diesel Engine Control ECU 6C11-12A650-AL Manual

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1454649-1

Ford Ranger Mk4 Radio CD DVD Player Head Unit Navigation UW1B66DSXD

€85.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6R0959655L

Skoda Fabia 5J VW Polo 6R Air Module Control Unit SRS 6R0959655L

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 04L907309B-4

Seat Leon 5F 1.6 TDI CLHA 105HP Engine Control Unit ECU Kit 04L907309B Manual

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1775407732

Mercedes W177 Engine Starter Wiring Loom Harness 2.0 Diesel 654920 A1775407732

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8P0971148A

Audi A3 8P Tailgate Heated Rear Window Wiring Harness Loom 8P0971148A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8C1T-14A073-CG

Ford Transit Mk7 Fuse Box BCM Body Control Module 8C1T-14A073-CG

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2035401113

Mercedes C Class W203 Solenoid SOLV Valve Wiring Harness Diesel A2035401113

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9075402605

Mercedes W907 Fuse Box Control Unit Module Q2 A9075402605

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9442117

BMW 1 2 Series F40 F44 IBS Negative Battery Lead 9442117 61219442117

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0937084DF

Volkswagen Golf 5G Body Control Module Onboard Unit 5Q0937084DF

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6995617

BMW F40 F44 G20 G21X5 G05 X6 G06 Immobilizer Emergency Start Coil 6995617

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0128206610

Mercedes W204 W207 Roof Panel Alarm Sensor Module Control Unit A0128206610

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8U0971029H

Audi Q3 8U Front Door Wiring Loom Harness Cable Driver's Side 8U0971029H

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 05E907309-4

Skoda Octavia 5E 1.5 TSI DADA 150HP Engine Control ECU Kit 05E907309 Manual

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7848839

BMW F80 F82 F91 F92 Trunk Boot Lid Automatic Smart Openning Sensor 7848839

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9384100

Mini F54 Clubman F60 Countryman KaFAS Camera Windscreen Unit Front 9384100

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9387626-1

MINI Cooper One F55 F56 Rain / Light / Solar HUD Sensor Windshield 9387626

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P5945093K-2

Porsche Cayenne 92A Rear Boot Tailgate Light Wiring Harness Left N/S 7P5945093K

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. M8A2-14B518-AB

Range Rover Velar L560 Door Wiring Loom Cable Front Right O/S M8A2-14B518-AB

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4H0971095AS

Audi A8 D4 Front Bumper Parking Sensor PDC Wiring Loom Harness 4H0971095AS

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1695450003

Mercedes W169 Fuse Box Cover Trim Panel A1695450003

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9294912-2

BMW F10 X5 F15 Rear Seat Compartment Screen Display 9,2" Surround Trim 9294912

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P5971364CN

Porsche Cayenne S 92a Seat Wiring Harness Cable Loom Front Right O/S 7P5971364CN

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7N0907530G

Volkswagen Passat B7 Gateway Control Unit Module ECU 7N0907530G

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9361116

BMW F10 LCI Body Control Module ECU Unit JBBFEIII V2 PL6 9361116

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 82A971104K

Audi A1 GB Rear Bumper PDC Parking Sensor Wiring Loom 82A971104K

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2208204942-1

Seat Adjustment Motor Mercedes W220 W221 Front Right Actuator O/S A2208204942

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6991400

BMW I4 G26 High Voltage Battery Inverter Control Jump Start Unit 6991400

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P5035503

Porsche Cayenne 92A Aerial Antenna Amplifier 7P5035503

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2049060503-1

Mercedes W204 Rear Light Tail Lamp Plug Socket Wiring Right O/S A2115450328

€118.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6J0907159A

Seat Ibiza Mk4 Cupra Sound Impact Control Module 1.4 TSI Petrol 6J0907159A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

...

Showing 2971-3069 of 20597 products