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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Mercedes W212 Vito W447 Adblue Injector Nozzle Wiring Harness Cable A0005400902

€23.95

Free delivery: Nov 12 – 13

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Part no. 7222633-1

BMW E90 E91 LCI Flat Cable Wiring Wire CAS Start Stop ECU Loom 7222633

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95561874000

Porsche Cayenne 9PA Electric Seat Adjustment Control Unit 95561874000

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K2907551A

Audi S4 B8 S5 8T 3.0 TFSI CREC Quattro 333HP Engine ECU 8K2907551A Automatic

€417.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CK52-14A578-CD

Range Rover L405 Rear Seat Heated Wiring Harness Cable CK52-14A578-CD

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L911024

Audi A4 B9 A5 F5 A6 C8 Starter Motor 2.0 TDI CNHA Diesel 04L911024

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-18B955-FF

Ford Fiesta Transit Custom Mk8 Radio Sat Nav Display Touch Screen H1BT-18B955-FF

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6886C

Hikity 6886C Car Radio Media Player 1 DIN 6.86" 2GB/64GB Android 13

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0910402E

Audi A8 D3 Engine Control Unit ECU 232HP 3.0 Diesel ASB 4E0910402E Automatic

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DK62-14300-CF

Range Rover L405 Sport L494 Positive Battery Cable Wiring DK62-14300-CF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FPLA-14F427-JB

Range Rover Sport L494 Steering Rack Wiring Loom Harness Wire FPLA-14F427-JB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009821012

Mercedes W166 W213 C238 Power Distribution Plate Control Unit Module A0009821012

€23.95

Free delivery: Nov 12 – 13

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Part no. 1Q2941006B-2

VW Volkswagen Eos 1F Front Headlight Cable Wire Loom Plug Right O/S 1Q2941006B

€23.95

Free delivery: Nov 12 – 13

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Part no. BJ32-14D620-AD

Land Rover Discovery 4 L319 Door Control Module Rear Right O/S BJ32-14D620-AD

€56.95

Free delivery: Nov 12 – 13

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Part no. BJ32-14F504-AH

Range Rover Evoque L538 Active Suspension Control Module ECU BJ32-14F504-AH

€28.95

Free delivery: Nov 12 – 13

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Part no. A2055400428

Battery Wiring Mercedes GLC X253 C253 Diesel OM651 Starter Cable A2055400428

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DU5T-14C687-J4CP7

Ford Mondeo Mk5 Front Seat Wire Harness Loom Left Right N/O/S DU5T-14C687-J4CP7

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1488566

Ford Fiesta Mk5 ST Rngine Starter Motor 2.0 Petrol ST150 5S6Y-11000-AB

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7835872

BMW 5 Series E60 E63 E64 Carrier Holder Amplifier/Video Module Fairing EDC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-13405-AD-2

Land Rover Discovery L550 Rear Light Wiring Outer Left N/S LED FK72-13405-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129007024

Mercedes CLS C218 Front Fuse Relay Box On Board Supply A2129007024

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0014460340

Mercedes W245 B150 CDI OM266.920 Engine Control Unit Module ECU A0014460340

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0035061N-1

Audi A4 B8 A5 8T Q5 8R A8 D4 Stereo DAB CD Player Radio Head Unit 4G0035061N

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7528933

BMW E90 E81 E92 E94 ECU Computer Module Housing Box Trim Carrier Bracket 7528933

€23.95

Free delivery: Nov 12 – 13

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Part no. 7195197

BMW E88 Convertible Folding Top Roof ECU Module CVM Bracket Holder Mount 7195197

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7522284

Mini Cooper One R50 R52 W10 Battery Cable Plus Pole 7522284

€23.95

Free delivery: Nov 12 – 13

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Part no. GX53-18K812-CF

Land Rover Discovery Sport L550 Radio Multimedia Head Unit GX53-18K812-CF

€51.95

Free delivery: Nov 12 – 13

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Part no. 1420000131

Audi A5 S5 F5 Headlight Module LED Headlamp Control Unit 000330028P

€94.95

Free delivery: Nov 12 – 13

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Part no. D1BT-14D212-NA

Ford Fiesta Mk7 Bluetooth Control Module Unit ECU D1BT-14D212-NA

€23.95

Free delivery: Nov 12 – 13

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Part no. A6461503378

Mercedes W639 Engine Control Unit ECU 88HP 2.1 Diesel 109 CDI Manual A6461503378

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018RC-1

Audi Q3 8U 2.0 TDI CFGC Quattro Engine ECU Kit 03L906018RC Ignition + Key Manual

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6928944

BMW X3 Series E83 Battery Positive Cable Fuse Box 61136928944 6928944

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698209926

Mercedes W169 W245 ECU Air Control Unit Sensor Module A1698209926

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. Q0012837V001000000

Smart Roadster 452 Tweeter Speaker Audio Sound Unit 0012837V001

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1P0907115AD

Seat Leon Engine Control Unit ECU 2.0 TSI CCZB 211HP FR 2 Keys 1P0907115AD

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9313607-1

BMW F30 F31 F32 Front Bumper PDC Wiring Loom Cable Harness 9313607

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8472346

Mini Cooper D F60 2.0 B47 Diesel Engine Control Unit ECU 8472346 Automatic

€284.95

Free delivery: Nov 12 – 13

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Part no. 7604347-1

BMW F20 F30 F31 F32 Bracket Holder Power Distribution Control Unit 7604347

€23.95

Free delivery: Nov 12 – 13

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Part no. FK721-4C676-AA

Jaguar Xf X260 Air Unit Module Crash Sensor 2.0 Diesel 204DTD FK721-4C676-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4565401317

Smart C451 Fortwo Throttle Acceleration Pedal Sensor Module Unit A4565401317

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1719477-1

Ford Transit Custom Mk8 Transit Mk7 Glow Plug Relay Control Unit 1719477

€23.95

Free delivery: Nov 12 – 13

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Part no. 839100K011

Toyota Hilux HL2 Interior Time Clock Black 839100K011

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8510832

BMW E90 E91 LCI N47N 318d 143HP Engine Control Unit ECU DDE 8510832 Automatic

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005468502

Battery Cover Mercedes W205 W212 Battery Positive Pole Cover Red A0005468502

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5971694AD

Porsche Cayenne 92A Door Wire Wiring Loom Harness Rear Right O/S 7P5971694AD

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6809542

Mini F55 Rear Door Wiring Loom Harness Cable 6809542

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8685853

BMW F40 X1 F48 Mini F55 F56 F60 Engine Injector Wiring Loom Harness 8685853

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-14B533-AE

Ford Fiesta Mk8 Door Control Module Unit ECU Front Left N/S H1BT-14B533-AE

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7514357

BMW Z4 E85 Roadster Cabrio Cable Alternator Starter Base B 7514357

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. NNN500400-1

Range Rover L322 Engine Module ECU Unit 4.4 V8 Petrol NNN500400

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9334789

BMW G11 G12 G30 G31 G32 Wiring Harness Cable Duct Holder Left N/S 2018 9334789

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229052705

Mercedes W205 Rear Switch Unit Tailgate Trunk Boot Lid Control ECU A2229052705

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LPLA-14F447-AH

Land Rover Range Rover Sport L494 ABS Pump Control Module LPLA-14F447-AH

€545.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BB13D278AC

Ford Fiesta MK7 Front Headlamp DRL Light Lamp Control Unit Module H1BB-13D278-AC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C1T14A481CA

Ford Transit Mk7 Under Bonnet Fuse Box Module Onboard Supply 6C1T14A481ACA

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0951253A

VW Crafter SY Skoda Fabia Mk4 5 Pin Switch Relay 12V Number 655 8X0951253A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635407505

Mercedes W163 Electric Seat Adjuster Motor Wiring Harness Cable A1635407505

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8715708

BMW F40 F44 Front Parking Sensor Wiring Loom Harness Cable 8715708

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9247939

BMW X3 F25 Radio Head Unit CD Player Autoradio Alpine 9247939

€327.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971615DA

Audi A3 S3 RS3 8P VW Caddy 2K Engine Wiring Loom Cable Guide Mount 1K0971615DA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV6N-19G481-AG

Ford Focus Mk3 Keyless Entry Control Module ECU Unit AV6N-19G481-AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8F0971029BF

Audi A5 8F Cabriolet Front Door Wiring Loom Harness Driver's Side 8F0971029BF

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0971095AG

Audi A8 4H D4 Front Bumper PDC Parking Sensors & Wiring Loom 4H0971095AG

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6907519-1

BMW 7 SERIES E65 E66 E67 Battery cable plus pole 6907519

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018FJ

Seat Leon FR 1P Engine Control 140HP ECU 2.0 TDI CFHC Diesel Manual 5K0937087R

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V4971693F

Audi A3 8V Rear Left Right N/O/S Door Card Wiring Loom Harness 8V4971693

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2174850

Ford Ranger Wildtrak TKE Engine Starter Motor 12V 3.2 TDCI Diesel EB3T-11000-BD

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9897192

Mini F45 F46 F56 Engine Control Unit ECU Module Unit Control Panel 9897192

€213.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L907309A-4

Audi A3 8V 2.0 TDI 150HP Engine ECU Kit Ignition With Key Automat 04L907309A

€99.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9354071

BMW F45 F48 Door Adapter Line Wire Wiring Harness Rear Left Right N/O/S 9354071

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6809049

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 6809049

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GX63-15C859-DL

Land Rover Discovery L550 Parking Aid Distance System Module GX63-15C859-DL

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1378330080

Citroen Relay Peugeot Boxer Positive Battery Cable 1378330080

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5E3972297D

Skoda Octavia IV Door Harness Loom Cable Wiring Rear Left Right N/O/S 5E3972297D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 07L971821

Audi A8 D3 Cable Guide Ignition Coil With Spark Plug Connector 07L971821

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 80A971693R

Audi Q5 FY Door Panel Wiring Harness Cable Rear Left Right N/O/S 80A971693R

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1664402406

Mercedes ML W166 Front Door Wiring Harness Cable Driver Side A1664402406

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0915429G

Audi A4 B8 A5 F5 A6 C6 A7 4G Battery Cover Lid Cap Surround 8K0915429G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8605458

Wiring BMW X1 E84 F11 N20 Engine Sensor System Module Wiring Harness 8605458

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0035423019-1

Power Relay Control Mercedes W176 W246 Module 4 Pin 12V 20A SET A0035423019

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6M21-13A602-EB-1

Ford Galaxy Mk3 Rear Lamp Right O/S Tail Light Cable Loom Harness 6M21-13A602-EB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CX-DH801N

Panasonic 8 Disc DTS MP3 Radio Music Audio DVD Changer CX-DH801N

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9648588880

Peugeot 206 2.0HDI 90HP DW10TD Engine Control Unit ECU 9664843780 Manual

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1718300272

Mercedes A B ML Class W166 W169 W245 Interior Temperature Sensor A1718300272

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7856817

BMW F90 M5 F91 M8 Battery Cable Wire Lead Positive Alternator Starter B+ 7856817

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 01396660080

Citroën Relay III Relay Boxer Alarm Siren Anti-Theft Signal Moduele 01396660080

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907383L

Audi A8 D4 Trailer Detection Control Module Unit ECU 4H0907383L

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971687BR

Audi A4 B9 Rear Right O/S Door Wiring Loom Harness 8W0971687BR

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2124407952

Battery Cable Mercedes W212 W218 Negative Lead Terminal Harness A2124407952

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0907376A

Volkswagen VW Golf Scirocco Mk3 Electric Damping Control Module 3C0907376A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6P0907159

Seat Ibiza 6J Cupra Sound Control Module ECU Unit 6P0907159

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA919275B-KYG

Audi A3 S3 8Y PDC Parking Distance Sensor 5WA919275C Kyalami Green - Z6A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95560301601

Porsche Cayenne 9PA Alternator Generator 3.2 V6 Petrol 95560301601

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645400850

Mercedes W164 W251 Positive Battery Cable Wiring Loom OM642 Diesel A1645400850

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1131531579

Mercedes W215 W220 S 55 AMG 113.986 360HP Engine ECU Control Unit A1131531579

€184.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0907383H-1

Audi Q7 4L Towbar Trailer Hitch Control Module Unit ECU HELLA 5DS010154-11

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0937517B

Audi RS4 B8 Positive Battery Distribution Terminal Junction Relay Box 8K0937517B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2489054201

Antenna Amplifier Mercedes X117 W176 W205 Rear Aerial Module A2489054201

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH22-19C166-AA

Land Rover Discovery 4 L319 USB iPod Port Socket AH22-19C166-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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