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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Range Rover L405 Control Unit Module LRA34862

€28.95

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Part no. GB3G-12A650-AA-1

Ford Ranger Mk3 2.2 TDCI GBVAJQJ 160HP Engine ECU Kit GB3G-12A650-AA Automatic

€503.95

Free delivery: Sep 14 – 15

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Part no. BJ32-14D620-AB

Range Rover Evoque L538 Rear Door Control Unit Module BJ32-14D620-AB

€23.95

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Audi A4 B9 Rear Hatch Boot Lid Tailgate Opening Control Module Unit 3G0962243D

€23.95

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Part no. 9462544

BMW F20 F30 F31 Mini F55 F56 F60 Control Unit Air Conditioning Module 9462544

€23.95

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Part no. A2055409231

Mercedes C205 Front Door Wiring Harness Loom Cable Driver Side A2055409231

€32.95

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Part no. 3C0959433AJ

Volkswagen Passat CC Comfort Unit Convenience System Control ECU 3C0959433AJ

€47.95

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Part no. 8570383

BMW F10 F11 X5 E70 2.0 Diesel 12V Starter Motor 8570383

€23.95

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Part no. GK21-12A650-CA

Ford Transit Custom 2.0 YLF6 105HP Engine Control ECU GK21-12A650-CA Manual

€541.95

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Part no. 4M8907777CA

Audi Q7 4M Air Suspension Adjustment Module Control Unit ECU 4M8907777CA

€265.95

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Part no. 6878195

BMW X5 F15 X6 F16 Air Module Control Unit ECU ICM 6878195

€23.95

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Part no. 04C907309BB

Audi A1 GB Engine Control Unit ECU 1.0 Petrol 115 HP Manual Gearbox 04C907309BB

€42.95

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Part no. 5J0919475A

Skoda Octavia II 1Z Control Unit PDC Parking Sensor Module 5J0919475A

€23.95

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Part no. 8P0862335N

Audi A3 8P TT 8J Interface Bluetooth Control Module Harman Becker ECU 8P0862335N

€28.95

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Part no. 5B65011

BMW F70 F74 G60 G61 G68 X2 U10 X1 U11 BCP Body Control Module Unit ECU 5B65011

€379.95

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Part no. 4F0971085E

Audi A6 C6 Rear Bumper Parking Sensor Wiring Loom Harness 4F0971085E

€28.95

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Part no. A0009007126

Air Conditioning Module Mercedes W205 W213 C253 A/C Control Unit ECU A0009007126

€23.95

Free delivery: Sep 14 – 15

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Part no. 6999950

LED Module BMW G11 G12 G20 F90 Dashboard Illumination Control Unit 6999950

€23.95

Free delivery: Sep 14 – 15

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Part no. 8621018

BMW G20 G21 G30 G31 LCI G11 G12 Cell Module Connector Harness Loom Cable 8621018

€28.95

Free delivery: Sep 14 – 15

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Part no. K8D2-14M726-AC

Range Rover Evoque L551 Battery Distributrion Terminal Harness K8D2-14M726-AC

€94.95

Free delivery: Sep 14 – 15

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Part no. A2075402308

Mercedes C207 Front Center Console Point Cable Wiring Loom Harness A2075402308

€56.95

Free delivery: Sep 14 – 15

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Part no. A2475457300

Mercedes W177 Fuse Box Relay Cover Lid Control Unit Bracket Trim A2475457300

€23.95

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Part no. A6561593100

Mercedes W213 OM656 Diesel Engine Wiring Guide Cable Duct A6561593100

€28.95

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Part no. A2215401205

Mercedes W221 Front Bumper PDC Wiring Parking Sensor Loom Harness A2215401205

€32.95

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Part no. LG9T-19H406-CD

Ford Mondeo Mk5 Front Camera Collision Mitigation System Unit LG9T-19H406-CD

€123.95

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Part no. 8616568

BMW F20 F21 F30 F31 Petrol N20 Electrical Fuse Box Cover Lid Panel 8616568

€23.95

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Part no. A2185409606

Mercedes C218 Parktronic Parking Sensor Wiring Cable Rear PDC A2185409606

€32.95

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Part no. 6R0945095AC-2

VW Polo Mk5 Tail Lamp Trunk Lid Light Wiring Harness Rear Left N/S 6R0945095AC

€23.95

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Part no. 4G5971687BQ

Audi A6 C7 4G Rear Door Harness Wiring Loom Cable Left N/S 4G5971687BQ

€28.95

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Part no. UR58-67-790

Ford Ranger Mk4 Alarm Signal Control Unit ECU 2.5 TDCI 1715411 UR58-67

€23.95

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Part no. 4G5971030EG

Audi A6 C7 Door Wiring Harness Front Passenger Side 4G5971030EG

€28.95

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Part no. 6M5Y-12A650-AF-1

Ford Focus St Mk2 Engine ECU 226HP 2.5 Duratec HYDA 6M5Y-12A650-AF Manual

€313.95

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Part no. 5A57FC8

BMW F20 F21 F22 F30 X3 F25 M Sport Radio Remote Key Fob Control 868 Mhz 5A57FC8

€51.95

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Part no. 5NA919866AR

VW Volkswagen Tiguan AD1 SD Memory Card Navigation Data Europe 5NA919866

€80.95

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Part no. AM51-10723-AE

Ford Transit Connect Mk2 Battery Tray Bracket Mount Holder AM51-10723-AE

€23.95

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Part no. 827300D040

Toyota Yaris Mk1 Fuse Relay Box Control Unit Module 827300D040

€23.95

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Part no. A2219050018

Mercedes-Benz S-Class W221 Headlining Alarm Sensor Module Cover Trim A2219050018

€28.95

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Part no. H1BT-19H406-AG

Ford Fiesta Mk8 Front Windscreen Mounted Lane Departure Camera H1BT-19H406-AG

€37.95

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Part no. 4G0907551E-1

Audi A6 C7 3.0 TFSI Quattro 310HP Engine Control ECU Kit 4G0907551E Automatic

€332.95

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Part no. 8X0971029S

Audi A1 8X Door Loom Wiring Harness Cable Front Driver Side 8X0971029Q

€23.95

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Part no. 4M1959595K

Audi A6 C8 A7 4K Door Module Rear Left Right N/O/S Control Unit ECU 4M1959595K

€56.95

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Part no. A2045400010

Mercedes C207 Cable Wiring Power Steering Rack Loom Harness A2045400010

€23.95

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Part no. 9365802

BMW X5 F15 Front Door Wiring Loom Harness Cables Driver Side 9365802

€32.95

Free delivery: Sep 14 – 15

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Part no. 4K0907347A

Audi A6 C8 Mild Hybrid Power Distribution Mount Bracket Support 4K0907347A

€23.95

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Part no. 99655277300

Porsche Carrera 996 Centre Console CD Magazine Storage Unit Holder 99655277300

€37.95

Free delivery: Sep 14 – 15

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Part no. 03L906022MA-1

Audi A3 8P Engine Control Module ECU 2.0 TDI CBAB 140HP Kit 03L906022MA

€237.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L6945096P-2

Volkswagen Touareg 7L Rear Tail Light Lamp Wiring Harness Right O/S 7L6945096P

€23.95

Free delivery: Sep 14 – 15

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Part no. GJ32-14N072-AA

Range Rover Evoque L538 Supply Distributor Mount Bracket Tray GJ32-14N072-AA

€23.95

Free delivery: Sep 14 – 15

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Part no. A2055400182

Mercedes W205 W213 C238 C253 Relay Fuse Box Top Cover Lid Cap A2055400182

€23.95

Free delivery: Sep 14 – 15

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Part no. KK62-14301-BE

Land Rover Range Rover Sport L494 Negative Battery Earth Cable KK62-14301-BE

€28.95

Free delivery: Sep 14 – 15

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Part no. 04L906021CA-1

Audi A4 B8 2.0 TDI CSUA 150HP Engine Control Unit ECU KIT 04L906021CA Automatic

€170.95

Free delivery: Sep 14 – 15

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Part no. FK72-14D617-BD

Land Rover Discovery Sport Front Door Control Module Left N/S FK72-14D617-BD

€23.95

Free delivery: Sep 14 – 15

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Part no. P8A2-9L468-AA

Land Rover Range Rover Velar L560 Rear Chasis Wire Harness Loom P8A2-9L468-AA

€284.95

Free delivery: Sep 14 – 15

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Part no. 0332209150

Range Rover Sport L320 Relay 4-Pin Unit Bosch 12V 20/30A Black 0332209150

€23.95

Free delivery: Sep 14 – 15

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Part no. A9075409682

Mercedes Sprinter W907 W910 Fuse Box Relay Box Fuse Box Module A9075409682

€85.95

Free delivery: Sep 14 – 15

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Part no. 9797954

BMW G30 Fuel Pump Control Unit Module ECU 2.0 Petrol Hybrid 251HP 9797954

€61.95

Free delivery: Sep 14 – 15

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Part no. 3404568

BMW X3 Series E83 2.5i 3.0i Engine Starter Motor Positive Battery Cable 3404568

€23.95

Free delivery: Sep 14 – 15

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Part no. 8650793

BMW G11 G12 G20 HV Accumulator Battery Negative Ground Cable Wiring Plug 8650793

€23.95

Free delivery: Sep 14 – 15

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Part no. A2108208726

Mercedes-Benz W210 S210 Alarm Anti Theft System Control Module Unit A2108208726

€23.95

Free delivery: Sep 14 – 15

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Part no. 9383694

BMW F10 Footwell Light Module Control Unit ECU TEMIC 9383694

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. Q0011881V002000000

Smart Fortwo C450 Electronic Power Steering EPS Control Unit Q0011881V002000000

€218.95

Free delivery: Sep 14 – 15

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Part no. 95B035035J

Porsche Macan 95B Multimedia MIB2 Navigation Head Unit Control Module 95B035035J

€759.95

Free delivery: Sep 14 – 15

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Part no. 5K0035456B

Volkswagen Scirocco Mk3 Amplifier Sound System 5K0035456B

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Part no. LR3T-14G087-VH

Ford Transit Custom Bluetooth Control Module ECU LR3T-14G087-VH

€23.95

Free delivery: Sep 14 – 15

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Part no. 3D0919887E

VW Volkswagen Phaeton 3D Head Unit Navigation Control Unit CD 3D0919887E

€32.95

Free delivery: Sep 14 – 15

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Part no. 8U0915181A

Audi RSQ3 8U Negative Minus - Battery Wiring Cable Loom 2.5 TFSI 8U0915181A

€23.95

Free delivery: Sep 14 – 15

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Part no. ML3A-5L200-AD

Volkswagen Amarok Mk2 DPF Filter Pressure Sensor 3.0 TDI ML3A-5L200-AD

€113.95

Free delivery: Sep 14 – 15

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Part no. AM5T-18K811-BE

Ford Focus Mk3 Multimedia Radio Player Switch Control Panel AM5T-18K811-BE

€23.95

Free delivery: Sep 14 – 15

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Part no. 5QF959655AM

Seat Arona Fr Kj7 Air Module Control Unit ECU 5QF959655AM

€218.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8V0907376C

Audi A3 S3 8V Air Suspension Damping Module Control Unit 8V0907376C

€94.95

Free delivery: Sep 14 – 15

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Part no. 4M1959792J

Audi A6 C8 Q5 FY Door Control Unit Module ECU Passenger Side 4M1959792J

€56.95

Free delivery: Sep 14 – 15

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Part no. AW93-14B663-AD

Range Rover L405 Heated Front Seat Control Module AW93-14B663-AD

€23.95

Free delivery: Sep 14 – 15

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Part no. A1779009902

Mercedes W177 Front Windscreen Windshield Camera Multi Purpose Unit A1779009902

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HX73-12C520-FFB

Land Rover Discovery Sport L550 2.0 204DTD Engine ECU HX73-12C520-FFB Automatic

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9286945

Comfort Control Unit BMW F06 F10 F11 F12 F13 Junction Box 9286945

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8509722-2

Control Unit Box BMW F20 F21 F22 F30 F31 Cover Panel Protection 8509722

€23.95

Free delivery: Sep 14 – 15

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Part no. GJ32-14D618-BA

Land Rover Discovery Sport L550 Door Module Front Driver's Side GJ32-14D618-BA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7286033-1

BMW F34 GT Rear Trunk Lid Boot Tailgate Lamp Light Wiring Cable Left N/S 7286033

€23.95

Free delivery: Sep 14 – 15

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Part no. EH22-14B079-DB

Land Rover Discovery 4 L319 Centre Console Wiring Harness EH22-14B079-DB

€28.95

Free delivery: Sep 14 – 15

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Part no. A2045420423

Mercedes W204 PDC Parktronic Parking Sensor Display Warning Rear A2045420423

€23.95

Free delivery: Sep 14 – 15

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Part no. DG9T-14B526-DA

Ford Mondeo Mk5 Engine Start Stop Control Module ECU Unit DG9T-14B526-DA

€23.95

Free delivery: Sep 14 – 15

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Part no. 8639595-14

BMW F07 LCI F10 LCI F34 ECU Engine Control KIT 184 HP 220i N20 Petrol 8639595

€332.95

Free delivery: Sep 14 – 15

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Part no. 7L6971121H

Volkswagen Touareg 7L Front Door Wiring Loom Harness Driver's Side 7L6971121H

€42.95

Free delivery: Sep 14 – 15

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Part no. 8W6945092N

Audi A5 F5 LED Rear Outer Tail Light Taillight Lamp Right O/S 8W6945092N

€142.95

Free delivery: Sep 14 – 15

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Part no. 6926961-1

BMW E60 E61 X5 E70 X6 E71 F07 F10 F11 Seat Adjustment Switch Left N/S 6926961

€23.95

Free delivery: Sep 14 – 15

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Part no. 6R0915181E

Audi A1 8X Battery Cable Loom Harness Wiring Negative Terminal 6R0915181E

€23.95

Free delivery: Sep 14 – 15

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Part no. HPLA-10C679-AD

Range Rover Sport L494 Battery Negative Earth Cable Sensor HPLA-10C679-AD

€23.95

Free delivery: Sep 14 – 15

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Part no. A2055451500

Power Connection Mercedes W205 W213 C238 X253 Battery Starter Alternator Wiring

€28.95

Free delivery: Sep 14 – 15

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Part no. 8573260-7

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 Key FEM Lock Manual

€441.95

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Part no. A6421501230-2

Mercedes C219 Engine Control ECU 272HP Diesel CLS 350 Automatic A6421501230 KIT

€165.95

Free delivery: Sep 14 – 15

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Part no. A2059067200

Mercedes W205 S205 W213 Fuse Box Front Relay Control Unit Module A2059067200

€23.95

Free delivery: Sep 14 – 15

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BMW G20 G21 G30 G31 LCI G11 G12 Cell Module Connector Harness Loom Cable 8621017

€23.95

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Part no. M8A2-F260145-BB

Land Rover Range Rover Velar L560 Negative Battery Cable M8A2-F260145-BB

€23.95

Free delivery: Sep 14 – 15

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Part no. WLEG18881

Ford Ranger Mk4 Engine Control Unit ECU 143HP 2.5 TDCi 1715411 WLEG18881 Manual

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Part no. A6519007401-12

Mercedes W204 Engine Control ECU 2.1 Diesel 170HP Manual 651911 A6519007401 Kit

€170.95

Free delivery: Sep 14 – 15

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Part no. AM5T-18C815-PF

Ford Fiesta Mk7 CD Player Radio Head Unit Multimedia AM5T-18C815-PF

€32.95

Free delivery: Sep 14 – 15

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Part no. 9252550

BMW F10 F12 F20 F21 F22 F30 F31 Front Seat Control Module ECU 9252550

€94.95

Free delivery: Sep 14 – 15

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Part no. CV4T-18K891-AA

Ford Kuga Mk2 Rear Tailgate Wiring Loom Connector Sensor CV4T-18K891-AA

€23.95

Free delivery: Sep 14 – 15

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Part no. 03L903024F-1

Volkswagen Passat CC Alternator 2.0 TDI 11721N BT23K1

€32.95

Free delivery: Sep 14 – 15

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