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

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L6971693P

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2078202910

Seat Control Module Mercedes A207 W207 Cabrio Rear Control Unit ECU A2078202910

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1725400340

Mercedes R172 Battery Holder Mount Bracket Support A1725400340

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 7PP035504A

Porsche Cayenne 92A Nav GPS Antenna Amplifier 7PP035504A

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 914014H161

Hyundai H-1 Fuse Box Front Relay Engine Control Unit Module ECU 91401-4H161

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06K907309B

Audi TT FV 2.0 TFSI DKZB Engine Control Unit Module 06K907309B Automatic

€151.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0971035AD

Audi A8 D4 Front Door Wiring Loom Harness Cable Driver's Side 4H0971035AD

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3G0919866H

Volkswagen Tiguan 5N Media Navigation Sat Nav SD Card Europa V3 3G0919866H

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0951253C

Seat Skoda Audi VW Polo 6R Multi Use Control Module Relay 4 Pin 646 4H0951253C

€23.95

Free delivery: Sep 23 – 24

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Part no. 3D0972072AG

VW Phaeton 3D Electrical Steering Column Wiring Harness Loom Cable 3D0972072AG

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. JU5T-15604-BJH

Ford Fiesta St Mk8 Body Control Module BCM Fuse Box Control Unit JU5T-15604-BJH

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. EXHAUST-FLAP-CONTROL

Audi A3 8V 1.6 TDI CLHA Drive Exhaust Flap Control Module Unit Actuator

€28.95

Free delivery: Sep 23 – 24

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Part no. NB5T-14G087-HD

Ford Transit Custom Mk8 Bluetooth Module Unit Control ECU NB5T-14G087-HD

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. LK72-14B750-AA

Land Rover Discovery Sport L550 Front Impact Crash Sensor Unit LK72-14B750-AA

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2GA947201

VW Volkswagen T-ROC A11 Front Door Handle LED Light Cable Left N/S 2GA947201

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0907247

Audi A6 4G Keyless Entry Amplifier Control Box Module Aerial Antenna 8K0907247

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009105202-1

Mercedes ML W164 Front Seat Lumbar Module Control Unit Pump A0009105202

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2661536679-2

Mercedes W169 A170 M166.940 116HP Engine Unit Module ECU A2661536679 Automatic

€56.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 2Q0907686E

VW Golf Gti CD1 Blind Spot Lane Change Control Module Rear Right O/S 2Q0907686E

€104.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. YWK500040

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

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 83A947356G

Audi Q3 F3 LED Front Door LED Lighting Module Control Unit Left N/S 83A947356G

€23.95

Free delivery: Sep 23 – 24

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Part no. 7505513

BMW X5 SERIES E53 4.4i 4.6is 4.8is Cable Alternator Starter Base B

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7316218

Headlight Module BMW F01 F02 LCI Xenon Headlamp Control Unit Lear TMS 7316218

€47.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. A2515400341

Mercedes W251 Negative Earth Battery Cable Wiring Harness Lead A2515400341

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8387547

Fuse Box Base BMW X3 E83 Mini R50 R53 Battery Positive Cable B 8387547

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7810950-1

BMW E60 E61 LCI 530d M57N2 235HP Engine ECU KIT DDE 7810950 CAS3 + Key Automatic

€279.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 5N0035341F

Volkswagen VW Scirocco Mk3 Multimedia Interface Media-In Module Box 5N0035341F

€23.95

Free delivery: Sep 23 – 24

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: Sep 22 – 24

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Part no. A6401508334-1

Engine Control Unit Mercedes W245 B200 CDI OM640.941 140HP ECU A6401508334

€104.95

Free delivery: Sep 23 – 24

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Part no. 4H0971693N

Audi A8 D4 Door Wiring Loom Harness Cable Rear Right O/S 4H0971693N

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0971228AJ

Audi A6 C6 Alternator Main Cable Wiring Harness Loom 8K0971228AJ

€56.95

Free delivery: Sep 23 – 24

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Part no. A1729001906

Mercedes X218 CLS350 Communication Bluetooth Control Module A1729001906

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T0907468R

Audi A4 B8 Gateway Control Unit Module ECU 8T0907468R

€23.95

Free delivery: Sep 23 – 24

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Part no. MK72-18K942-AA

Land Rover Sport L550 Antenna Aerial Control Unit Module MK72-18K942-AA

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. L8D2-10C679-AB

Land Rover Discovery Sport L550 Battery Management System Sensor L8D2-10C679-AB

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GV6T-14D453-AC

Ford Kuga Mk2 Blind Spot Control Unit Module Radar Sensor GV6T-14D453-AC

€142.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6924519-2

BMW E82 E88 Rear Lamp Taillight Tail Light Wiring Cable Left N/S 6984754

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0907063DJ

Audi RS4 B8 Body Control Unit Module ECU BCM 8K0907063DJ

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. HK72-14F681-AA

Land Rover Discovery Sport L550 Fuel Pump Gateway Module HK7214F681AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2389000705

Mercedes C118 W177 W205 Bluetooth Control Module Mobile Phone ECU A2389000705

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0907397R

Audi S1 8X Front Lamp Headlight DRL Ballast Control Module Unit 4G0907397R

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2465401205

Mercedes-Benz A B W176 W246 Left N/S Parking Brake Electrical Wiring Cable

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4B0919471A

Audi TT 8N Headlight Module Ballast Relay Control Unit 4B0919471A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8580308-2

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

€237.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6914304

Mini Cooper One R50 R52 Cabrio R53 Side Air Module Impact Sensor 6914304

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6970889

BMW 7 Series E65 E66 E67 Sensor Vehicle Centre Airbag 6970889

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 52218980

Vauxhall Movano C Fuse Box Cover Covering Lid Top Housing 52218980

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0907159D

Volkswagen Golf Mk7 Sound Actuator Control Unit Module 4H0907159A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3C8941753R-2

Volkswagen Passat CC Front Headlight Wiring Harness Cable Left N/S 3C8941753R

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5F4971145

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

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. LT-1360-01

Laver Technology Electric Control Unit Module ECU LT-1360-01

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7E0915181G

Volkswagen Transporter T6 Camper T5 Battery Wiring Loom Harness Cable 7E0915181G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0131552D

VW Volkswagen Tiguan 5N DPF Sensor Mount Bracket Holder Retainer 5N0131552D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. EJ32-14301-AC-1

Range Rover Evoque L538 Negative Battery Cable Terminal EJ32-14301-AC

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. M8A2-14632-DB

Land Rover Range Rover Velar L560 Door Wiring Loom Rear Right O/S M8A2-14632-DB

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5B3E982

Mini F65 F66 F67 Negative Minus Battery Cable Clamp IBS 5B3E982

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8592700

Glow Plug Wiring BMW F48 Mini F57 Wiring Harness Engine Module 8592700

€37.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. DM5T19A067AC

Ford Focus RS Mk3 Rear Subwoofer Speaker Boot Amplifier DM5T-19A067-AC

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. E1BT18C815GE

Ford Fiesta Mk7 Radio Stereo CD Player Head Unit Multimedia E1BT-18C815-GE

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 98661313300

Porsche Boxster 986 Rear Windscreen Heating Switch Relay 5 Pins 98661313300

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2077924

Ford Kuga C520 Rear Bumper Parking Aid PDC Wire Harness Loom GV4T-15K868-MLD

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. JX7T-18808-FA

Ford Puma St Cf7 Front Door Speaker Loudspeaker Left Right N/O/S JX7T-18808-FA

€28.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. 473974AR

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

€237.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 95B907530E

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

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2709002100

Mercedes W176 W246 A180 B180 BlueEFFICIENCY 270.910 122HP Engine ECU A2709002100

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9381581

BMW i3 I01 IBS Cable Negative Battery Lead Wiring Harness Control Unit 9381581

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8X0971036T

Audi A1 8X Front Door Card Wiring Harness Loom Cable Left N/S 8X0971036T

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8S0820047

Audi TT FV 8S A/C Air Condition Climate Control Module Unit ECU 8S0820047

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9378071

BMW F12 F12 LCI Convertible Top Module 9378071

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9139899

BMW F07 F10 LCI F06 F12 F13 MMI Multimedia CD Player Reader Head Unit 9139899

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6927310

BMW E60 Seat Control Unit Module Left Right N/O/S Temic 6927270

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7171587

Mini R60 Xenon Headlight Adaptive Ballast Control Unit 7171587

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9213373

Mini Cooper R57 Convertible Cabrio Petrol Fuse Box 9213373

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0038202826

Mercedes W164 W216 W221 W251 W639 W906 Crash Sensor Impact Control A0038202826

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. JK62-13404-AH-2

Range Rover Sport L494 Tail Light LED Right O/S Harness Wire Loom JK62-13404-AH

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 82A945094C-2

Audi A1 GB Rear LED Tail Light Lamp Wiring Plug Cable Right O/S 82A945094C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. LR053540-2

Range Rover L405 Rear Tail Lamp Light Plug Cable Wiring Left N/S EK5M-13405-AA

€23.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 5N0035554J

Audi Q7 4L VW Passat A3 Touareg 7P Multimedia Interface Cable Media 5N0035554J

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8574380

BMW F10 520d N47N 184HP Engine Control Unit ECU DDE 8574380 Automatic

€99.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F9035225D

Audi A6 C6 Antenna Amplifier Control Unit Module ECU 4F9035225D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8S0907159B

Audi TT FV Acoustic Controller Control Module Unit ECU 8S0907159B

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7K08200A

Audi RSQ3 8U Wiring Loom Harness Cable Connector Adapter 7K08200A

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4L0959655C

Audi Q7 4L Air Module Control Unit ECU Impact Sensor 4L0959655C

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

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