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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ICM Control Unit BMW F01 F02 LCI F06 F10 F11 F13 ECU Module 6875997

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8F0971035H

Audi A5 8F Cabriolet Door Card Wiring Harness Front Driver's Side 8F0971035H

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8508208-1

BMW F10 F11 520d 530d N47N N57 E-Box Control Unit Box 8508208

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5A20558

BMW X2 F39 F45 F46 Automatic Gearbox ECU Control Module EGS Unit 5A20558

€313.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V4T-18C939-LD

Ford Kuga MK1 Sony Radio CD Head Unit 8V4T-18C939-LD

€123.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6900583

BMW E65 E66 Power Distribution Box 6900583

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G5945095C-2

Audi A6 C7 Rear Tail Light Lamp LED Wiring Harness Cable Left N/S 4G5945095C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. F2GT-14C676-AA

Ford Mondeo Mk5 Air Unit Module Crash Impact Sensor F2GT-14C676-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HK62-14687-EB

Range Rover Sport L494 Door Wiring Loom Harness Rear Left N/S HK62-14687-EB

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. R8E2-14D620-AA

Range Rover Evoque L551 Rear Door Control Module ECU Drivers Side R8E2-14D620-AA

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9399997

BMW X5 F15 LED Light Lamp Control Module 9399997

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06F906056HD

Volkswagen Eos 1F 2.0 FSI BVY 150HP Engine Control Unit ECU 06F906056HD Manual

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1Z0197121DL

Skoda Octavia Mk2 Front Door Wiring Harness Cable Passenger Side 1Z0197121DL

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1690663980

Vauxhall Movano C Wiring Harness Cable Loom 1690663980

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8T0971030S

Audi A5 8T Front Door Wiring Loom Harness Cable Passenger Side 8T0971030S

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8X0971035BL

Audi A1 S1 8X GB Front Door Wiring Loom Harness Cable Driver's Side 8X0971035BL

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2218204189

Mercedes W221 Antenna Amplifier Aerial A2218204189

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5F4035225B

Seat Leon Mk3 Antenna Amplifier Module FM Right O/S Aerial Booster 5F4035225B

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HG9T-14B560-BB

Ford Mondeo Mk5 Centre Console Wiring Cable Adapter Loom HG9T-14B560-BB

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9291958

BMW F20 Front Door Wiring Cable Loom Harness Driver's Side 9291958

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BK2T-10N725-AG

Ford Transit Custom Mk8 Battery Box Lid Tray Cover Panel Trim LK4T-10N725-BA

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1T0906216

Volkswagen Caddy 2C Engine Control Unit Support ECU Holder 1.6 TDI 1T0906216

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6929557

Air Module BMW E65 E66 Driver's Seat Sensor Control Unit 6929557

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2T1U-10300-CG

Ford Transit Connect Focus Mk1 Engine Alternator Generator 110A 2T1U-10300-CG

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0951253A-2

Seat Skoda Audi VW Polo 6R Multi Use Control Relay 4 Pin 645 4H0951253A SET X3

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5QA971228AK

Audi Q3 F3 VW Tiguan Skoda Kodiaq Wire Positive Battery Cable Lead 5QA971228AK

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K5907551D-1

Audi S5 8T 3.0 TFSI CGWC 333HP Quattro Engine ECU Kit Ignition + Key 8K5907551D

€336.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2135404953

Mercedes W205 Battery Cable Electrical Wiring Harness Hybrid A2135404953

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1775408609

Door Wiring Mercedes W177 W247 Front Passenger Side Cable Harness A1775408609

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A9075407160

Mercedes W907 W910 Battery Electrical Wiring Harness Ground Line A9075407160

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BM51-13405-AK-1

Ford Focus Mk3 Rear Tail Light Lamp Wiring Cable Left N/S BM51-13405-AK

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DWM500110

Range Rover Sport L320 Battery Tray Holder Bracket Inner Left N/S DWM500110

€23.95

Free delivery: Sep 15 – 16

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Part no. 8V0035399C

Audi A3 8V A-Pillar Speaker Tweeter Front Left Right N/O/S 8V0035399C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7304902

BMW F11 F11N Rear Function Body Control Module ECU 7304902

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2059004013

Mercedes W205 Air Conditioning Control Module A/C ECU Unit A2059004013

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BJ32-14D617-AD

Land Rover Discovery 4 L319 Door Module Front Passenger Side BJ32-14D617-AD

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8E0907273

Audi A4 S4 RS4 8H 8E B7 Tyre Pressure Control Unit Module 8E0907273

€23.95

Free delivery: Sep 15 – 16

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Part no. 7521582

BMW E46 E83 E85 Engine Electronics Unit Box Cover Trim 7521582

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DS73-14E073-BH

Ford Mondeo Mk4 Door Interior Light Wiring Harness Front Left N/S BS71-13A602-BD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9390835

Sound Amplifier BMW X5 F15 X6 F16 Active Harman Becker Design 9390835

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. R8E2-14D619-AA

Range Rover Evoque L551 Rear Door Control Unit ECU Passenger Side R8E2-14D619-AA

€104.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9297613

BMW F12 Front Seat Wiring Loom Harness Cable Right O/S Side 9297613

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F0959792B

Audi A6 C6 Front Door Control Module Unit ECU Passenger's Side 4F0959792B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8X0971679C

Audi A1 8X Dash Panel Glove Box Light Wiring Harness Cable Loom 8X0971679C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2129060205

SAM Module Mercedes W207 A207 C207 Rear Control Unit ECU A2129060205

€99.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2044402607

Earth Ground Cable Mercedes W204 W207 Battery Wiring Loom Engine A2044402607

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8591073-14

BMW F45 Engine Control Unit ECU 115HP 1.5 Diesel 216d B37 B37C15A 8591073 Manual

€474.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0951253-1

Audi A3 8P Multi Use Control Module Relay 4 Pin Light Green Unit Set 4H0951253

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G0907392

Audi A6 A7 Control Module Bracket Holder Mount Carrier 4G0907392

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 575035816A

Seat Ibiza Mk5 KJ1 Multimedia Radio CD Player Head Unit 575035816A

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. LR073579-1

Land Rover Discovery Sport L550 Battery Cable Positive Terminal GK72-14A280-EB

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. CADDY-2C-SCREEN

VW Caddy 2C Dashboard Display Screen Radio Multimedia Head Unit

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A9105400805

Mercedes Sprinter W910 Fuel Tank Wiring Loom Cable Harness A9105400805

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8489450

BMW F20 F21 LCI F22 M140i M240i B58 340HP Engine Control Unit ECU DME 8489450

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V5971687E

Audi A3 8V Rear Door Wiring Cable Harness Loom Left Right N/O/S 8V5971687E

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4E0941286G

Audi S8 D3 Front Headlight Level Control Sensor Right O/S 4E0941286G

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. WR09-C01-AA

Land Rover Discovery L550 Sunroof Sliding Roof Drive Motor Actuator WR09-C01-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1321501579

Smart Fortwo 451 M132 71HP Engine Control Module Unit ECU A1321501579 Automatic

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8X0971035BK

Audi A1 8X Front Door Loom Wiring Harness Cable Driver's Side O/S 8X0971035BK

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1321540001

Smart Fortwo 451 Alternator Generator 90A M132 Petrol Engine A1321540001

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2059007521

Module Mercedes W205 Air Conditioning A/C System Control Module A2059007521

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055455400

Mercedes W205 Battery Power Connection Wiring Bar Rail Busbar A2055455400

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2661536779-1

Mercedes W245 M266.920 95HP Engine Control Module Kit A2661536779 Automatic

€127.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8T0945095H-2

Audi A5 8T Rear Tail Light Lamp Wiring Harness Cable Plug Left N/S 8T0945095H

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8633997

Ground Line BMW G11 G12 G20 G30 G31 Battery Earth Cable Wire 8633997

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A7899061600

Mercedes W205 Converter Unit Module Control ECU DCDC48V A7899061600

€232.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HK62-14B518-EB

Range Rover Sport L494 Door Wiring Loom Harness Rear Right O/S HK62-14B518-EB

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6840409

BMW F45 F46 Mini F54 F55 F56 Navigation Headunit Head Unit Basic Media 6840409

€104.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9262871

BMW F01 Front Door Wiring Loom Cable Harness 9262871

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9651709980D

Ford Galaxy Mk2 Glow Plug Wiring Loom 2.0 TDCi Diesel 9651709980D

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1381630

Ford Fiesta St Mk5 Battery Negative Cable Wire Harness 1381630 6S6T-14301-DB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6G9T-14A067-AB-1

Land Range Rover Sport L550 Fuse Box Cover Bracket Housing 6G9T-14A067-AB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9225099

Battery Cable BMW X3 F25 Red Positive Plus Pole Blow Off 9225099

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055405626-1

Mercedes C Class W205 C350e Hybrid Battery Wiring Loom A2055405626

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A9069820109-1

Mercedes W907 Positive Battery Terminal Cover Cap Trim Red A9069820109

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9882602

Gearbox Cable BMW F90 M5 F91 M8 Engine Wiring Automatic Transmission 9882602

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5E0035411D

Skoda Octavia RS 5E Front Bass Loudspeaker Digital Sound System DSP 5E0035411D

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8L0906018N

Audi A3 8L Engine ECU Kit Key APY 1.8 Petrol Quattro 210HP 8L0906018N Manual

€360.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9136612

BMW X6 E71 Front PDC Parking Sensor Wiring Loom Harness Cable 9136612

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1669003602

Mercedes W204 R172 DAB Receiver Digital Audio Control Unit Module A1669003602

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 982971035G

Porsche 718 Boxster 982 Cayman Door Wiring Harness Driver Side O/S 982971035G

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9426359

BMW G20 High Voltage Cable Harness Loom Wire Wiring EDH Hybrid 330e B48X 9426359

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3G0919605D-1

Volkswagen Golf Mk7 Multimedia Radio Sat Nav Radio Display Screen 3G0919605D

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1175402601

Mercedes C117 Parking Sensor Wiring Rear Bumper Parktronic Loom Cable Harness

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FK72-14D617-BE

Land Rover L550 Front Door Control Unit Module Passenger Side FK72-14D617-BE

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. EM5T-18B955-BD

Ford Transit Connect Tourneo Dashboard Head Unit Display Screen EM5T-18B955-BD

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03L907309K

VW Transporter T5 2.0 TDI CAAA 84HP Engine Unit Module ECU 03L907309K Manual

€184.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. C1BT-19C175-AB

Ford Fiesta Mk7 GPS Sensor Antenna Module C1BT-19C175-AB

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AV1T-18812-EB

Ford B-Max Roof Antenna Wiring Harness Cable AV1T-18812-EB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 80C919616

Audi Q5 FY Multimedia Volume Control Button Switch Knob Head Unit 80C919616

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. CF6N-18C815-HB

Range Rover Evoque L538 Radio CD Player Sat Nav Head Unit CF6N-18C815-HB

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3508099

BMW X3 SERIES E83 Wiring Loom Harness Passenger Side 3508099

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0065424220

Mercedes W164 W251 High Tone Horn Signal Right O/S A0065424220

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3405815

BMW X3 Series E83 E83N Inclination Indicator Alarm System 65753405815 3405815

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9387266

FEM Module BMW F23 F36 Body Control Unit ECU LR01 9387266

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8F0971029BD

Audi A5 8F Front Door Wiring Loom Harness Cable Driver's Side 8F0971029BD

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GH22-12C520-PAC

Land Rover Discovery 4 L319 3.0 306DT 256HP Engine ECU GH22-12C520-PAC Automatic

€431.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4M0959592N

Audi Q7 4M Front Door Module Control Unit ECU Passenger Side 4M0959592N

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. M8A2-12A659-BC

Land Rover Range Rover Velar L560 Engine Control Unit ECU Bracket M8A2-12A659-BC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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