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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BMW X1 E84 20dX N47N 184HP Engine Control Module ECU DDE Kit 8580308 Automatic

€237.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2055455440

Mercedes C205 Keyless Go Module Unit Bracket Mount Holder Support A2055455440

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W6947355C

Audi A5 S5 F5 Door Card Panel LED Module Light Unit Front Left N/S 8W6947355C

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9361116

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

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6856283

BMW F30 F31 Lane Change Wiring Sensor Module Master Right O/S HC-2 6856283

€104.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. YWK500040

Land Rover Discovery 3 L319 Anti Theft Alarm Siren Signal Unit YWK500040

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DG9T-14B079-BFF

Ford Mondeo Mk5 Wire Harness Loom Cable Wire DG9T-14B079-BFF

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2079059702

Mercedes-Benz W207 A207 Radio Aerial Antenna Amplifier Module Unit Right O/S

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8C11-3C190-AB

Ford Transit Yaw Sensor ESP Rotation Rate Control Unit Module 8C11-3C190-AB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DPLA-14D618-AC

Land Rover Range Rover L405 Door Control Module Front Right O/S DPLA-14D618-AC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2515400341

Mercedes W251 Negative Earth Battery Cable Wiring Harness Lead A2515400341

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. L8A2-19C279-AB-1

Range Rover Velar L560 Media GPS Display Screen L8A2-19C279-AB

€232.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8473167

BMW F30 F31 F32 LCI 330dX N57N Engine Gearbox Module Wiring Cable Loom 8578498

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8514291

Battery Cable BMW X3 F25 X4 F26 B47 Alternator Starter Base B Cable 8514291

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2465408111

Mercedes W246 Door Wiring Loom Cable Front Right A2465408111

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AB39-14B321-CF

Ford Ranger Mk6 Air Module Control Unit ECU AB39-14B321-CF

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6926961-1

BMW E60 E61 X5 E70 X6 E71 F07 F10 F11 Seat Adjustment Switch Left N/S 6926961

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K2971111B

Audi A4 S4 8K A5 S5 8T Electric Power Steering Wiring Loom Harness 8K2971111B

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9G9T-14B533-FC

Ford Mondeo Mk4 Front Door Control Module Unit Left N/S 9G9T-14B533-FC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8798223

Mini F55 F56 F60 Multimedia Satellite Navigation Display Screen 8798223

€127.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L6971693P

Volkswagen Touareg 7L Rear Door Wiring Loom Harness Cables 7L6971693P

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1725400340

Mercedes R172 Battery Holder Mount Bracket Support A1725400340

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T8971030AP

Audi A5 8T Front Door Wiring Harness Loom Cable Passenger's Side 8T8971030AP

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 46867943

Vauxhall Movano C Additional Fuse Box Module Unit 2.2 Diesel B22LUE 46867943

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6820464

Mini Cooper F55 F56 Control Unit Module Active Sound Design Amplifier 6820464

€99.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5F4971145

Seat Leon Mk3 5F Tailgate Boot Trunk Cable Wiring Loom Harness 5F4971145

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0005465402

Mercedes C117 W176 W246 Positive Battery Terminal Cover Cap Trim Red A0005465402

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9261612

Ultrasonic Parking Sensor BMW F20 F21 F23 F87 PDC Black 9261612

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W0971693M

Audi A4 B9 A5 F5 Door Wiring Loom Harness Cable Rear Left Right N/O/S 8W0971693M

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2124400414

Mercedes C207 W207 W212 Fuel Pump Module Diesel Control Unit ECU A2124400414

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0907115A

Audi A5 8T 1.8 TFSI CABD 170HP Engine Control Unit ECU 8T0907115A Manual Gearbox

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7075907

BMW Z4 E85 Left N/S Contact Bush 7075907

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2135403839

Mercedes W213 C238 Power Relay Fuse Box Unit Cover A2135403839

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A1B272-1

Mini Cooper F60 SE ALL4 B38X 220HP Engine Control ECU DME 5A1B272 Automatic

€427.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 98661313300

Porsche Boxster 986 Rear Windscreen Heating Switch Relay 5 Pins 98661313300

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6921309

BMW E65 E66 Centre Console Front Armrest Tray Cables Wiring Set 6921309

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02E911024H

Volkswagen Seat Skoda Audi 2.0 TDI Diesel Engine Starter Motor Valeo 02E911024H

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9302937

BMW F01 LCI Cable Door Rear Left Right N/O/S Wiring Harness 9262882

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CV1T-14B533-AC

Ford B-Max Mk1 Front Door Module Control Unit Passenger's Side CV1T-14B533-AC

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8P4971035J

Audi A3 8P Door Wiring Harness Loom Cable Front Right O/S 8P4971035J

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469006710

Radio CD Player Mercedes W176 W246 COMAND Nav Sat Head Unit A2469006710

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. YL5T-14A464-AA

Ford Ranger Mk3 Electrical Cable Plug Socket Connector YL5T-14A464-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9234424

BMW F10 F11 Fuse Box Power Distribution Control Unit Box Rear 9234424

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. HK72-14F681-AA

Land Rover Discovery Sport L550 Fuel Pump Gateway Module HK7214F681AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6822094

Mini F54 F55 F56 F57 Radio Sat Nav DAB Basic Media Player Head Unit 6822094

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5H0945207A-2

VW Golf GTI CD1 Tail Light Rear Lamp Socket Cable Plug Left N/S 5H0945207A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9259800

BMW F10 F12 F13 F20 F30 F06 Mini F55 F56 F57 DVD CD Changer Control Unit 9259800

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009067500

Alternator Generator Mercedes W204 W212 Diesel Engine Valeo 180A 14V A0009067500

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1669063901

Mercedes ML W166 Relay Module Box Under Rear Right Seat F4 A1669063901

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7555193

BMW F10 Control Unit Box F07 F11 Engine Ventilation Housing Box 7555193

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8517727

Mini Cooper D R60 N47N Engine Control Unit ECU 8517727 Manual

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1388911

BMW E36 E38 E21 E85 R52 R57 Change-Over Contact Relay Violet 1388911

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9387452-2

Mini F55 F56 Dashboard Central Information Display Sat Nav Screen 8.8" 9387452

€336.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0915519

Volkswagen Polo Touareg Audi A4 A6 A7 A8 Battery Overload Protection 4F0915519

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9294912-1

BMW F10 F11 X5 F15 X6 F16 Rear Seat Compartment Screen Display 9294912

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8U0955559B-1

Audi A5 8T A8 D4 RS3 8V Q7 4M Windscreen Rain Sensor Control Unit 8U0955559B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6940624

BMW E81 E87 E90 E91 E92 Ultrasonic-sensor PDC Arktis Metallic A34 6940624

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6957807

BMW X3 E83 Amplifier For Stereo System Harman/Becker AMP 6957807

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7357876430

Citroën Relay Mk3 III Stereo Sat Nav CD Radio Player Head Unit 7357876430

€564.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR053536-2

Range Rover L405 Rear Tail Lamp Light Plug Cable Wiring Right O/S EK5M-13404-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9374507-1

BMW F23 REM Rear Electronic Module Fuse Box Control Unit V2 9374507

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 06F903023C

Audi Volkswagen Seat Skoda Engine Alternator Generator 06F903023C

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906018LA-1

Audi A6 C7 2.0 TDI CGLC 177HP Engine Unit ECU Kit 03L906018LA 2 Keys Ignition

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1685405008

Mercedes A-Class W168 Door Cable Harness Wiring Loom Front Right A1685405008

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8S0907159B

Audi TT FV Acoustic Controller Control Module Unit ECU 8S0907159B

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02E911024D

Volkswagen Golf Mk7 Audi A3 8V Engine Starter Motor Start Stop Denso 02E911024D

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. NU5T-15604-KACN

VW Volkswagen Amarok Mk2 BCM Body Control Module Control Unit NU5T-15604-KACN

€222.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0035110A

Audi A6 C6 CD Player Changer Multimedia Module Control Unit 4F0035110A

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2028281114

Mercedes-Benz C CLK W202 W208 Alarm Control Module Bracket Holder A2028281114

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7823310

BMW 3 Series F30 F31 330d 330dX N57N Diesel Alternator Starter Cable B+ 7823310

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0959792H

Door Module Audi A5 8T A4 B8 Control Front Left N/S Unit 8T0959792H

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129004502

Mercedes W204 W207 Front Right Door Control Unit Module A2129004502

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4L1937503

Audi Q7 4L Fuse Relay Box Module Electrical Control Unit 4L1937503

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009006516

Bluetooth Module Mercedes S205 W205 W177 Active Parking Assist Control Rear

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W0937530

Audi Q7 4M Fuse Box Module Holder Relay Box 8W0937530

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2075401102

Mercedes W207 A207 C207 Loudspeaker Cable Wiring Loom Harness

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. EJ32-14A076-CA

Range Rover Evoque L538 Fuse Box Relay Cover Cap EJ32-14A076-CA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1729058300

Mercedes SLK R172 Pedestrian Protection Impact Crash Sensor Module A1729058300

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9261110

BMW F20 F21 F30 F31 Fuse Box Power Distribution Control Unit Box Rear 9261110

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9259467

Fuse Box BMW X3 F25 Power Distribution Control Unit Module Front 9259467

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 473974AR

Audi A5 8T Head Unit Multimedia Screen Display Android Unit Rear Camera

€237.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 95B907530E

Porsche Cayenne 92A Body Gateway Module ECU Control Unit 95B907530E

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8610006-1

Mini Cooper S R56 LCI N18 1.6 184HP Engine ECU Kit DME 8610006 CAS3 Key Manual

€493.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5H2Z-14B345-BA-1

Land Rover Discovery 4 L319 Air Module Crash Impact Sensor 5H2Z-14B345-BA X2

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9378071

BMW F12 F12 LCI Convertible Top Module 9378071

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1669005012

Mercedes W166 Front Door Module Left N/S Control Unit ECU A1669005012

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 83A947356A

Audi Q3 F3 LED Front Door LED Lighting Module Control Unit Right O/S 83A947356A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8809737

PDC Wiring BMW X4M F98 G02 Rear Bumper Parking Assistance Sensor Harness 8809737

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6927311

BMW E60 Front Seat Control Unit Module Controller ECU 6927311

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. K95301AE

Range Rover Sport L494 Discovery Parking Aid Control Module ECU K95301AE

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3M51-13K031-AF

Ford Kuga Mk1 C-Max Headlight Control Unit Module 3M51-13K031-AF

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0035462-1

Audi A5 8T MMI Multimedia Interface Unit Module Control ECU 8T0035462

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2465403005

Mercedes W176 W245 Front Right Door Wiring Loom Harness A2465403005

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1645403132

Mercedes-Benz M-Class ML W164 Wiring Loom Cable Harness Fuel Tank A1645403132

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3B0951253

Volkswagen Golf 5G Caddy 2K Crafter SY Heated Windscreen Relay 4-Pin 3B0951253

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6905950

BMW X5 Series E53 Spoiler Dualband Antenna Amplifier Aerial 6905950

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1S0919275-PHB

Audi A3 8P PDC Parking Distance Control Sensor Module Unit ECU Phantom Black Z9Y

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2K2945096T-1

VW Volkswagen Caddy Maxi 2k Rear Tail Light Lamp Plug Cable Left N/S 2K2945096T

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 52218980

Vauxhall Movano C Fuse Box Cover Covering Lid Top Housing 52218980

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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