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 TT 8S Headlight Head Light Lamp Range Control Unit Module ECU 4H4907357G

€66.95

Free delivery: Nov 12 – 13

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Part no. 5F4971687C

Seat Leon 5F Rear Door Wiring Loom Harness Cable Wire Left N/S 5F4971687C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CJ5T-19H464-CA

Ford Kuga Mk2 GPS Positioning Sensor Control Unit CJ5T-19H464-CA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0035225BQ

Audi A8 D3 Aerial Amplifier Antenna Receiver Signal Booster Unit 4E0035225BQ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7824732

BMW F44 218d B47C20B 150HP Engine Module Control Unit ECU DDE 7824732 Automatic

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129060017

Mercedes W212 Hybrid Engine Bay Fuse Relay Box Housing A2129060017

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8589891

Starter Motor BMW G20 G21 G30 G31 G32 GT G11 B57 3.0 Diesel Engine 8589891

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14A481-BA

Land Rover Discovery Sport L550 2.0 Diesel Fuse Box BJ32-14A481-BA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BG9T-14A073-CK

Ford Mondeo Mk4 Galaxy S-Max BCM Body Control Module Fuse Box BG9T-14A073-CK

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7555166

BMW F01 F02 F03 F04 ECU Bracket Engine Module Box Housing Holder Mount 7555166

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8983102020

Toyota Aygo B1 Impact Crash Sensor Air Module Unit Right O/S Side 8983102020

€23.95

Free delivery: Nov 12 – 13

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Part no. 896610DB00

Toyota Yaris P9 Engine Control Unit 1.3 Petrol 1NRFE 100HP Manual 896610DB00

€70.95

Free delivery: Nov 12 – 13

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Part no. 826620K470

Toyota Hilux Mk7 Engine Room Relay Block Upper Cover Trim 826620K470

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8517862-14

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP ECU Kit DDE 8517862 + Key + FEM

€270.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YQS500170

Range Rover L322 Fuse Box Cover Lid Panel YQS500170

€28.95

Free delivery: Nov 12 – 13

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Part no. EJ32-19G307-BB

Range Rover Evoque L538 Telematics Module Bracket Support Mount EJ32-19G307-BB

€23.95

Free delivery: Nov 12 – 13

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Part no. A0009008709

Mercedes W213 Tyre Pressure Control Module Unit A0009008709

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7N0971104E

Seat Alhambra 7N Rear Bumper PDC Parking Sensor Wiring Loom 7N0971104E

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T2907560E

Audi RS4 B7 RS5 8T 4.2 FSI 450HP Engine Control Unit ECU 8T2907560E Automatic

€374.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669005612

Door Module Mercedes ML W166 Rear Right O/S Door Control Unit A1669005612

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5M51-14C288-AA

Ford Mondeo Mk4 Front Seat Occupancy Mat Sensor Unit Wiring Cable 5M51-14C288-A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2E0971237G

Volkswagen Crafter 35 Sprinter Negative Battery Wiring Cable Lead 2E0971237G

€23.95

Free delivery: Nov 12 – 13

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Part no. 6R0915441

Seat Ibiza 6j Fuse Box Cover End Cap Lid Top Covering Panel 6R0915441

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0035504A

Volkswagen Golf R Mk7 Toll Pay Module Road Toll Sender Receiver Unit 8V0035504A

€23.95

Free delivery: Nov 12 – 13

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Part no. 8X0971365

Audi A1 8X Driver's Seat Cable Seat Belt Warning Wiring Loom Harness 8X0971365

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8576341-1

BMW F20 F30 F31 116d 316d 116HP N47N Engine ECU Control Unit DDE 8576341 Manual

€61.95

Free delivery: Nov 12 – 13

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Part no. 7333939

BMW F11 Control Unit Rear Tailgate Boot Lid Function Module ECU 7333939

€23.95

Free delivery: Nov 12 – 13

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Part no. 8631634

BMW X5 F15 Earth Ground Cable Negative Battery Lead Wiring 8631634

€32.95

Free delivery: Nov 12 – 13

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Part no. 95B971693F

Porsche Macan 95B-2 Rear Door Card Wiring Harness Left Right N/O/S 95B971693F

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3D0919283C

Volkswagen VW Phaeton 3D PDC Parking Sensor Control Unit Module 3D0919283C

€23.95

Free delivery: Nov 12 – 13

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Part no. A1769052400-1

Mercedes W176 Pressure Crash Impact Sensor Control Module A1769052400

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9207852

BMW X5 X6 Series E70 E71 Cable Loom Door Front Passenger Wiring Harness 6900922

€47.95

Free delivery: Nov 12 – 13

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Part no. 8578945-4

BMW F20 F21 F30 116d 316d N47N 116HP ECU Engine Contol Unit DDE 8578945 Manual

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971227A-1

Audi A4 S4 8W A5 S5 F5 Battery Wiring Harness Cable Loom Distributor 8W0971227A

€66.95

Free delivery: Nov 12 – 13

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Part no. A1765406602-1

Mercedes W176 Front Bumper Electrical Wiring Harness Parktronic A1765406602

€56.95

Free delivery: Nov 12 – 13

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Part no. 8R0035474D

Audi Q5 8R AUX Interface Connector Wiring Cable Adapter 8R0035474D

€23.95

Free delivery: Nov 12 – 13

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Part no. 02M911024P

Audi A3 8P 2.0 TDI CBBB Diesel Starter Motor 02M911024P

€32.95

Free delivery: Nov 12 – 13

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Part no. 3C0909141

Audi S1 8X Skoda Octavia Mk3 Keyless Entry Antenna Control Module 3C0909141

€23.95

Free delivery: Nov 12 – 13

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Part no. 9364818

BMW Z4 E89 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9364818

€94.95

Free delivery: Nov 12 – 13

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Part no. BV61-12A650-NN

Ford Focus Mk3 1.6 TDCI T1DB 115HP Engine Control ECU BV61-12A650-NN Manual

€85.95

Free delivery: Nov 12 – 13

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Part no. A2054402032-1

Mercedes W205 Centre Console Lighting Wiring Harness Cable Loom A2054402032

€37.95

Free delivery: Nov 12 – 13

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Part no. A4519024000

Smart Fortwo 451 Fuse Box Control Module Unit A4519024000

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0907468A

Audi A4 B8 Quattro A5 8T Gateway Control Unit Module 8R0907468A

€23.95

Free delivery: Nov 12 – 13

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Part no. CPLA-14F681-AJ

Land Rover Range Rover L405 Gateway Module Control Unit ECU CPLA-14F681-AJ

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7928663

Antenna Receiver Mini F54 F55 F56 F57 BMW F15 F20 F30 F32 Control Unit 7928663

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218707385

Mercedes W221 Rear DVD Entertainment System Video Player Unit A2218707385

€370.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5971691

VW Volkswagen Caddy 2K Sliding Door Wiring Loom Harness Cable Left N/S 2K5971691

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8423160070

Toyota Celica T23 Control Unit Door Courtesy Light Sensor Switch 8423160070

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A8E2E6-1

BMW F74 Gran Coupé Headlight Lamp Right O/S Wiring Loom Harness Wire ECE 5A8E2E6

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479004004

Mercedes-Benz A Class W177 Headlight Control Unit Ballast Module LED A2479004004

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0945096N-2

Volkswagen VW Polo 6R Rear Tail Light Side Panel Lamp Wiring Left N/S 6C0945096N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9232063

BMW F30 Control Module Sensor 9232063

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8F0971035F

Audi S5 A5 8F Front Door Trim Wiring Harness Cable Loom Left N/S 8F0971035F

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2761509875

Mercedes W213 W222 A238 M276 Starter Screening Plate Shield A2761509875

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906018FC-3

Volkswagen Golf Mk5 2.0 TDI BMN 170HP Engine Control ECU Kit 03G906018FC Manual

€156.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1748650

Ford Transit Mk7 Engine StarterMotor 2.2 TDCI RE6C1T-11000-AE

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049060405

Mercedes W204 Front Fuse Board Box Relay Unit Case A2049060405

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M51-10723-BC

Ford Kuga Mk1 C394 Battery Tray Box Cover Housing Trim Panel 4M51-10723-BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5035481D

Porsche Cayenne 92A Subwoofer Bass Low Tone Speaker Bose 7P5035481D

€99.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. EJ32-14F70-AA

Range Rover Evoque L538 Start Stop Power Supply Control Module EJ32-14F70-AA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907530AK

Skoda Octavia MK3 Central Gateway Control Module ECU 5Q0907530AK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8737097-1

BMW G30 G31 Tailgate Control Unit Module ECU 8737097

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JK2T-18D815-CH

Ford Transit Custom Radio Head Unit Multimedia Player JK2T-18D815-CH

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2321615

Ford Fiesta Mk7 Alternator Generator 1.6 Petrol Engine AV11-19D629-AC 2321615

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DPLA-18C858-BC

Range Rover L405 Display Touch Screen Control Module Unit DPLA-18C858-BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6946528

BMW 1 3 X1 Series E81 E87 E90 E91 E92 Ultra Sonic Module Alarm System 6946528

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2711535679

Mercedes S203 Engine Control Unit ECU 1.8 Petrol 163 HP A2711535679 Automatic

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8971365L

Audi A7 4G Front Seat Belt Warning Wiring Cable Left Right N/O/S 4G8971365L

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059065105-2

Mercedes S205 Estate Rear Lamp Inner Wiring Harness Cable RIght O/S A2059065105

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8621020

BMW G20 G30 G11 G12 HV Accumulator Battery Positive Cable Wiring Plug 8621020

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8803369

BMW X1 F48 Dashboard Monitor Display Central Information Screen 6,5" 8803369

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9283526-1

Mini R55 R56 R57 R60 R61 Navigation Head Unit Sat Nav DAB CHAMP 2 9283526

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1P0035726A-1

Seat Leon Mk2 1P USB AUX Port Socket Connection Media Adapter 1P0035726A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8Z0951253

Skoda Octavia II 5 Pin Black Relay Control Module Unit Set Kit 8Z0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. J8A2-13E005-AC

Range Rover Velar L560 LED Headlight Ballast Control Unit Module J8A2-13E005-AC

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. MX73-19C164-BA

Range Rover Velar L560 Audio Speaker Amplifier Control Module MX73-19C164-BA

€465.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6876893

Sensor BMW F82 F80 F34 Lane Change Warning Module Master Rear Right O/S 66876893

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L903023M

Volkswagen Tiguan Mk2 Golf Mk7 Crafter Mk2 Alternator 180A 14V 2.0TDI 03L903023M

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DV4T-14B321-EE

Ford Kuga Mk2 Air Module Control Unit ECU DV4T-14B321-EE

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2049060205-1

Mercedes C-Class C204 Rear SAM Fuse Box Relay Control Module 2049060205

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7838512

BMW E90 E92 E93 M3 Battery Alternator Starter Cable Wiring 7838512

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6943285

BMW E65 Xenon Headlight Control Module LM E6X LWR 6943285

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K9035225A

Antenna Amplifier Audi A4 S4 B8 Radio Aerial AM/FM 8K9035225A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK3T-11000-CB-2

Ford Transit Custom MK8 V363 Starter Motor 2.2 TDCi BK3T-11000-CB

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8518802

BMW F30 F31 330dX N57N Engine Gearbox Module Wiring Cable Loom Harness 8518802

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9T-14A481-AA

Land Rover Discovery Sport L550 Fuse Box Module Control Unit 50EH199762ST3

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DH52-18C815-BC

Land Rover Freelander 2 L359 Radio Head Unit DAB CD Player DH52-18C815-BC

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0971030

Audi Q3 8U Front Door Wiring Harness Wire Loom Cable Right O/S 8U0971030

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A8E2E5-1

BMW F74 Gran Coupé Headlight Head Light Headlamp Wiring Front Left N/S 5A32B47

€23.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 1561230

Ford Fiesta Mk7 Tailgate Strut Bracket Support Mount Right O/S 8A61-A41836-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420035225S

Audi R8 42 Spyder Gen 1 Audio Antenna Amplifier Module Unit 420035225

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8704090

BMW F20 F21 F30 Mini F55 F56 HSD Cable HU CID Wiring Cable 8704090

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139005819

Mercedes W213 Multi Purpose Camera Module Unit Control System A2139005819

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9206056-TS

BMW F07 GT Rear PDC Parking Distance Sensor Titan Silver - 354

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139003920

Mercedes W213 C238 Stereo Radio Player Sat Nav GPS Control Unit A2139003920

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7N0937503

Audi Q3 8U Skoda Yeti VW Caddy Mk2 Tiguan 7L Fuse Relay Box Housing 7N0937503

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9353046

Mini Cooper One F54 F55 F56 F60 Seat Air Module Sensor Control Unit 9353046

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FG9T-14F642-CB

Ford Mondeo Mk5 OBD Diagnostic Port Data Port Socket Module FG9T-14F642-CB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6971693E

Volkswagen Touareg 7L Rear Door Wiring Loom Harness Left Right N/O/S 7L6971693E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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