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 E60 E61 E63 E64 Bluetooth Telematics Control Unit Module 6946337

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Part no. 2522569

Ford Puma Fiesta Mk8 Alternator Generator 130A 14V Petrol M1BT-10300-AAA

€85.95

Free delivery: Nov 12 – 13

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Vauxhall Opel Astra G Fuse Box Covering Trim Panel Lid Housing 90589541

€23.95

Free delivery: Nov 12 – 13

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Ford Fiesta Mk7 Windscreen Rain Sensor AV1T17D547

€23.95

Free delivery: Nov 12 – 13

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BMW X3 G01 X4 G02 Driver's Seat Control Unit Module Memory Heated 5B44733

€161.95

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Part no. 8714777

BMW F90 G30 G31 Front Door Harness Wire Cable Loom Driver's Side 8714777

€66.95

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Audi A4 B9 Front Door Wiring Harness Cable Loom Passenger Side 8W0971036H

€47.95

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Part no. 2810022040

Toyota Celica T 23 Starter Motor Unit Generator Petrol Manual 2810022040

€28.95

Free delivery: Nov 12 – 13

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Part no. 8X23-18C847-BB

Jaguar XF X250 Aerial Antenna Signal Booster Amplifier Module 8X23-18C847-BB

€23.95

Free delivery: Nov 12 – 13

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Part no. 8P0941004AN-2

Audi A3 8P Front Headlight Headlamp Xenon Left N/S Harness Loom Wire 8P0941004AN

€23.95

Free delivery: Nov 12 – 13

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Part no. 463546910

Fiat Ducato Mk3 Engine Wiring Loom Harness Electrical Cable 2.2 Diesel 463546910

€113.95

Free delivery: Nov 12 – 13

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Part no. DX23-14B326-AA

Jaguar XF X250 Fuse Box Battery Control Module Wiring Harness DX23-14B326-AA

€75.95

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Part no. XRA500031

Land Rover Discovery 3 L319 Traffic Master Control Unit Module XRA500031

€23.95

Free delivery: Nov 12 – 13

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Part no. 7P6907107B

Volkswagen VW Touareg 7P Image Processing Module Control Unit 7P6907107B

€203.95

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Part no. 2008900

Ford Fiesta Mk7 Door Wiring Loom Harness Cable Rear Right O/S C1BT-14240-ADD

€23.95

Free delivery: Nov 12 – 13

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Part no. F1FT-14K733-BE

Ford Focus Mk3 Body Control Module BCM Fuse Realay Box 1.5 Diesel AV6T-14A067-AD

€23.95

Free delivery: Nov 12 – 13

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Part no. 9224866

BMW 1 3 4 Series F20 F21 F30 F31 F32 Power Distribution Fuse Box Front 9224879

€23.95

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Part no. 8W5945075A-1

Audi A4 B9 Tail Light Rear Lamp Tailgate Connector Wire Plug Left N/S 8W5945075A

€23.95

Free delivery: Nov 12 – 13

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Part no. 9341325

BMW F33 Automatic A/C Air Conditioning Module Control Unit ECU 9341325

€42.95

Free delivery: Nov 12 – 13

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Part no. 9227560

BMW F10 F11 LCI Dashboard Central Information Display Screen 7" 9227560

€37.95

Free delivery: Nov 12 – 13

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Part no. 03E906019AE-1

Skoda Fabia Mk2 5J 1.2 MPI CGPA 70HP Engine Control Unit ECU 03E906019AE Manual

€56.95

Free delivery: Nov 12 – 13

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Part no. 9389070-1

BMW F36 Fuse Box Control REM Electric Power Distribution 9389070

€23.95

Free delivery: Nov 12 – 13

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Part no. 7539787

BMW Mini Cooper R55 R56 R57 R58 Negative Battery Cable 7539787

€23.95

Free delivery: Nov 12 – 13

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Part no. R8D2-14N030-AB

Range Rover Evoque L551 Fusebox Fuse Relay Box Unit R8D2-14N030-AB

€32.95

Free delivery: Nov 12 – 13

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Part no. 4F1971095C

Audi A6 C6 Front Bumper PDC Parking Aid Wiring Harness Cable 4F1971095C

€42.95

Free delivery: Nov 12 – 13

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Part no. 5J2941017D-2

Skoda Fabia Mk3 Headlight Headlamp Wiring Harness Cable Plug Left N/S 5J2941017D

€23.95

Free delivery: Nov 12 – 13

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Part no. A2208216279

Mercedes-Benz S-Class W220 Door Control Module Left Rear N/S A2208216279

€23.95

Free delivery: Nov 12 – 13

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Part no. 8M5T-15K857-BJA

Ford Focus Mk2 Centre Console Wiring Loom Harness Cable 8M5T-15K857-BJA

€23.95

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Part no. F1FT-10C679-CB

Ford Transit Connect Mk2 Battery Negative Earth Lead Cable F1FT-10C679-CB

€23.95

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Part no. 9241330

BMW X1 E84 USB AUX-IN Socket Plug Input Connector Media Port 9241330

€28.95

Free delivery: Nov 12 – 13

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Part no. 3A0972595A

Porsche Cayenne S 92a Harness Wire Connector Plug Loom 3A0972595A

€23.95

Free delivery: Nov 12 – 13

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Part no. 5Q0971230AQ

Seat Leon 5F VW Golf Mk7 Alternator Wiring Harness Loom Cable 5Q0971230AQ

€23.95

Free delivery: Nov 12 – 13

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Part no. 6Y0959121

Skoda Fabia Rs 6y Anti Theft Ultrasound Alarm Sensor Module 6Y0959121

€23.95

Free delivery: Nov 12 – 13

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Part no. A1645453047

Mercedes ML W164 Trunk Tailgate Foam Control Unit Module Bracket A1645453047

€23.95

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Part no. 6C0907159B

Volkswagen Polo 6C Body Sound Impact Control Module ECU 6C0907159B

€23.95

Free delivery: Nov 12 – 13

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Part no. 7571142-2

Mini Cooper R55 R56 R57 Battery Cable Wiring Lead Power Positive 7571142

€23.95

Free delivery: Nov 12 – 13

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Part no. A2118202464-1

Mercedes W211 Tail Lamp Rear Light Right O/S Harness Loom Wire Cable A2118202464

€23.95

Free delivery: Nov 12 – 13

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Part no. 7273428-2

BMW E82 E88 Rear Tail Light Lamp Wiring Harness Cable Loom Right O/S 7273428

€23.95

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Part no. A2074402805

Mercedes W207 Head Unit Navigation Media Cable Wiring Harness A2074402805

€32.95

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Part no. 8V0857273M

Audi A3 S3 RS3 8V Navigation Multimedia Screen Display 8V0857273M

€28.95

Free delivery: Nov 12 – 13

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Part no. 8X2T-14B476-AF

Jaguar XF X250 Front Fuse Box Relay Electrical Control Unit F8X2T-14B476-AF

€94.95

Free delivery: Nov 12 – 13

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Part no. LR023624

Land Rover Discovery 4 L319 Discovery Front Seat Left Right N/O/S Fabric Black

€32.95

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Part no. L0279135-AB02

Range Rover L405 Rear Seat Lumbar Support 1000324161

€23.95

Free delivery: Nov 12 – 13

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Part no. 9257104

BMW F01 F01N F02 F02N F04 F07 Seat Control Module Rear Left Right N/O/S 9257104

€42.95

Free delivery: Nov 12 – 13

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Part no. 99160611100

Porsche 911 991 Cayman 982 Front Impact Crash Acceleration Sensor 99160611100

€28.95

Free delivery: Nov 12 – 13

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Part no. 4G2972871D

Audi A6 C8 Power Steering Rack Sensor Control Unit Cable Wiring 4G2972871D

€23.95

Free delivery: Nov 12 – 13

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Part no. 5A98AA7

BMW F74 Wiring Loom Harnes Cable Plug Socket 5A98AA7

€23.95

Free delivery: Nov 12 – 13

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Part no. LR070822

Land Rover Discovery Sport L550 Alternator Wiring Harness Adapter G4D3-9137-DB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425N-1

Skoda Octavia Mk4 2.0TFSI DNPA 245HP Engine Control ECU Kit 06K907425N Automatic

€398.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8512415-12

Mini Cooper SD R60 ALL4 N47N 143HP Engine Control Unit ECU DDE 8512415 Automatic

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401510

Mercedes C Class W205 Door Wiring Loom Harness Rear Right O/S A2055401510

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. XTE3971C

BMW E39 X5 E53 Carplay Head Unit Car Radio Stereo XTE3971C

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 240720782R

Renault Trafic III VIvaro B Wiring Connector Additional Horn Cable 240720782R

€23.95

Free delivery: Nov 12 – 13

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Part no. A2721533291-1

Mercedes C219 Engine Control ECU Module 272 HP CLS 350 Automatic A2721533291 KIT

€569.95

Free delivery: Nov 12 – 13

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Part no. BK3V-14517-CE

Ford Transit Mk8 Fuse Relay Box Control Unit Module BK3V14517CE

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14632-CC

Range Rover Evoque L538 Door Wiring Harness Rear Left N/O/S BJ32-14632-CC

€85.95

Free delivery: Nov 12 – 13

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Part no. 3Q1959435C

Seat Ibiza KJ1 Keyless Go Control Unit Module ECU 3Q1959435C

€142.95

Free delivery: Nov 12 – 13

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Part no. UM466696X

Ford Ranger Mk4 Front Door Loudspeaker Speaker Right O/S UM466696X

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P0907311-1

Volkswagen Touareg 7P 3.0 TDI CASD 204HP Engine Unit ECU Set 7P0907311 Automatic

€693.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-19H440-AG

Range Rover Evoque L538 Keyless Entry Control Module Unit ECU BJ32-19H440-AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009050254

Mercedes W212 Negative Battery Cable Terminal Wiring A0009050254

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2G0959578B

Volkswagen Polo Mk6 Door Wing Mirror Adjustment Motor Left N/S 2G0959578B

€23.95

Free delivery: Nov 12 – 13

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Part no. 46861380

Fiat Ducato Starter Alternator Ignitor Cable Loom Wire Harness 46861380

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L907309K-1

Audi Q3 8U 2.0 TDI Quattro Engine ECU Kit 04L907309K Ignition + Key

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-18C847-AB

Ford Fiesta Mk8 ST Antenna Amplifier Module Unit Control H1BT-18C84-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. 9338153

Mini F54 F60 Clubman Countryman Antenna Aerial Amplifier AM / FM Unit 9338153

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0919275S-CGR-1

Audi TT 8J PDC Parking Distance Sensor Control Condor Grey - Y7E 3C0919275S

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420959655

Audi R8 42 Air Module Sensor Control Unit ECU 420959655

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C2Z1481

Jaguar XF X250 Glove Box Sensor Module Unit 8X23-060D20-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. 8X23-18K891-AA

Jaguar XF X250 Aerial Antenna Amplifier Booster Module Unit 8X23-18K891-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0907468E

Audi A7 4G8 Gateway Control Module Unit Diagnosis Interface Data Unit 4G0907468E

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0909131

Audi A8L 4H Ignition Keyless Entry Reader Coil Module 4H0909131

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0819012930

Toyota Celica Previa Alarm Control Module ECU 0819012930

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425AA-1

Audi S3 8Y 2.0 TFSI DNFF 333HP Engine Control Unit ECU 06K907425AA Automatic

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-13405-AF-2

Land Rover Discovery L550 Rear Lamp Tillight Plug Cable Left N/S FK72-13405-AF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465405833

Mercedes W176 W246 Starter Cable Loom Wiring 160 180 CDI Diesel A2465405833

€23.95

Free delivery: Nov 12 – 13

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Part no. 7642153

BMW Mini Cooper One F55 F56 F57 Wiring Loom Cable Guide Holder 7642153

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W5945076A-1

Audi A4 B9 Rear Tail Light Lamp Connector Plug Wire Outer Right O/S 8W5945076A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937084CQ

Seat Leon Cupra Mk3 VW Golf Mk7 Crafter MK2 BCM Body Control Module 5Q0937084CQ

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135402870

Ground Cable Mercedes C238 Fuse Box Wire Prefuse Box Wiring A2135402870

€32.95

Free delivery: Nov 12 – 13

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Part no. C1BT-14B560-BCE

Ford Fiesta Mk7 Centre Console Wiring Loom Harness Cable C1BT-14B560-BCE

€23.95

Free delivery: Nov 12 – 13

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Part no. DK52-14687-FD

Range Rover L405 Rear Door Ambient Light Wiring Harness Left N/S DK52-14687-FD

€42.95

Free delivery: Nov 12 – 13

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Part no. DPLA-10E889-BH

Range Rover L405 Multimedia Sat Nav Display Screen Dashboard DPLA-10E889-BH

€327.95

Free delivery: Nov 12 – 13

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BMW 5 Series E60 E60N E61 E61N Battery lead positive underfloor 80 MM² AL petro

€51.95

Free delivery: Nov 12 – 13

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Part no. N9D3-14D618-AA

Range Rover Velar L560 Driver's Door Control Unit Module ECU N9D3-14D618-AA

€42.95

Free delivery: Nov 12 – 13

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Part no. 9T1T14B321BE

Ford Transit Connect Mk1 I Air Module Control Unit ECU 9T1T14B321BE

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401604

Mercedes W205 Battery Cable Wiring Harness Loom Petrol Hybrid A2055401604

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EM5T-18B955-BA

Ford Transit Connect Dashboard Multi Function Display Screen EM5T-18B955-BA

€37.95

Free delivery: Nov 12 – 13

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Part no. 8W6971036G

Audi A4 B9 A5 F5 Front Door Wiring Harness Cable Passenger Side 8W6971036D

€28.95

Free delivery: Nov 12 – 13

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Part no. 5R3907361

Volkswagen Caddy SB Fuse Relay Box Housing 2.0 TDI 5R3907361

€208.95

Free delivery: Nov 12 – 13

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Part no. MX63-7C078-AC

Range Rover Velar L560 Automatic Transmission Wiring Harness Cable MX63-7C078-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. 8K0959663H

Porsche Macan 95B Start Stop Voltage Stabilizer Converter Module 8K0959663H

€37.95

Free delivery: Nov 12 – 13

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BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver Side

€23.95

Free delivery: Nov 12 – 13

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Part no. GK2T-14F642-AB

Ford Transit Custom OBD Data Link Diagnostic Module Control Unit GK2T-14F642-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. MU5T-17D547-AB

Ford Transit Custom Ranger Rain Sensor Control Unit MU5T-17D547-AB

€28.95

Free delivery: Nov 12 – 13

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Part no. CV6T-14014-RFG

Ford Kuga Mk2 Fuse Relay Box Control Module 2.0 TDCi Diesel CV6T-14014-RFG

€32.95

Free delivery: Nov 12 – 13

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Part no. A6395480174

Mercedes-Benz Vito W639 Fuse Box Cooling Outlet Pipe Air Duct A6395480174

€23.95

Free delivery: Nov 12 – 13

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Fiat Panda Mk2 Starter Motor +Line 1.1 Petrol 187 A1.000 Manual 500.553.103.080

€47.95

Free delivery: Nov 12 – 13

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Part no. 2613368

Ford Kuga Mk3 Battery Negative Minus Earth Cable Terminal LX6T-10C679-BG

€37.95

Free delivery: Nov 12 – 13

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