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 Q3 8U Facelift Rear Tail Light Lamp Left N/S Cable Harness Wire 8U0945093N

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9468396

BMW U10 X1 U11 X2 U12 Rear Axle Wiring Loom Harness Cable 9468396

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. KK3T-14F642-AG

Ford Transit Custom OBD Connection Port Unit Module KK3T-14F642-AG

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0971277

Audi A4 B9 S4 8W A5 S5 F5 Front Motor Grille Shutter Wiring Cable Loom 8W0971277

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9257364

BMW F01 Antenna Amplifier Audio Control Module 9257364

€180.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1384487080

Citroen Relay 35L III Battery Negative Earth Lead Harness Diesel 1384487080

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8589145-22

BMW F34 320d B47 190HP Engine Control Unit ECU Kit 8589145 Key FEM Lock Manual

€336.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009059101

Mercedes-Benz E-Class W207 W212 ESP Yaw Rotation Rate Sensor A0009059101

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 95B971687P

Porsche Macan 95B Rear Door Wiring Harness Loom Cable Left N/S 95B971687P

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2535400701-1

Mercedes A238 M276 Engine Alternator Wiring Loom Cable Harness A2535400701

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0971225J

Porsche Cayenne 9PA Negative Minus Pole Battery Terminal Cable 7L0971225J

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2Q0937089E

Seat Arona FR BCM Body Control Module Unit 2Q0937089E

€180.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8677247

Mini Countryman F60 Cable Alternator Starter Wire 12428677247 8677247

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T8971029AM

Audi A5 8T Front Door Wiring Loom Harness Cable Driver's Side 8T8971029AM

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971030AQ

Audi A4 B8 Front Door Wiring Harness Loom Cabling Passenger Side 8K0971030AQ

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

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: Aug 10 – 11

If paid before 14:00

Part no. BJ32-14D620-AB

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9462544

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C0959433AJ

Volkswagen Passat CC Comfort Unit Convenience System Control ECU 3C0959433AJ

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8570383

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GK21-12A650-CA

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

€541.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4M8907777CA

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

€265.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 04C907309BB

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

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2518200856-3

Mercedes W169 W204 C207 Front Fog Lamp Wiring Harness Plug Right O/S A2518200856

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5B65011

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

€379.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F0971085E

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009007126

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

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6999950

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. K8D2-14M726-AC

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

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2075402308

Mercedes C207 Front Center Console Point Cable Wiring Loom Harness A2075402308

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2475457300

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6561593100

Mercedes W213 OM656 Diesel Engine Wiring Guide Cable Duct A6561593100

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1669008422

Mercedes C205 W205 Touchpad Sat Nav Controller Media Control Console A1669008422

€127.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LG9T-19H406-CD

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

€123.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8616568

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2185409606

Mercedes C218 Parktronic Parking Sensor Wiring Cable Rear PDC A2185409606

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6R0945095AC-2

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G5971687BQ

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A57FC8

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

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 827300D040

Toyota Yaris Mk1 Fuse Relay Box Control Unit Module 827300D040

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2219050018

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G0907551E-1

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

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0971029S

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4M1959595K

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

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2045400010

Mercedes C207 Cable Wiring Power Steering Rack Loom Harness A2045400010

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9365802

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

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K0907347A

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 99655277300

Porsche Carrera 996 Centre Console CD Magazine Storage Unit Holder 99655277300

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906022MA-1

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

€237.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. GJ32-14N072-AA

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055400182

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. KK62-14301-BE

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 04L906021CA-1

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

€170.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FK72-14D617-BD

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. P8A2-9L468-AA

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

€284.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 0332209150

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9075409682

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

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9797954

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

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3404568

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2108208726

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9383694

BMW F10 Footwell Light Module Control Unit ECU TEMIC 9383694

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 95B035035J

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

€759.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3D0919887E

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

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. ML3A-5L200-AD

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

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5QF959655AM

Seat Arona Fr Kj7 Air Module Control Unit ECU 5QF959655AM

€218.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2240962-1

MIni R50 R53 PDC Front Parking Sensor Royal Grey - A48 2240962

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5QA919294L

Audi Q2 GA Park Parking Assist PDC Distance Control Unit Module 5QA919294L

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V0907376C

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

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4M1959792J

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

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AW93-14B663-AD

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1779009902

Mercedes W177 Front Windscreen Windshield Camera Multi Purpose Unit A1779009902

€66.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 9286945

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

€51.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. GJ32-14D618-BA

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V0906259F

Audi S3 8V 2.0 TFSI CJXC 300HP Quattro Engine Control ECU 8V0906259F Automatic

€170.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. EH22-14B079-DB

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2045420423

Mercedes W204 PDC Parktronic Parking Sensor Display Warning Rear A2045420423

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DG9T-14B526-DA

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8639595-14

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

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L6971121H

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

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W6945092N

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

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

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: Aug 10 – 11

If paid before 14:00

Part no. 6R0915181E

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. HPLA-10C679-AD

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055451500

Power Connection Mercedes W205 W213 C238 X253 Battery Starter Alternator Wiring

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8573260-7

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

€441.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6421501230-2

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

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059067200

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8621017

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8A2-F260145-BB

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9252550

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

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6835155

BMW 1 2 3 Series F40 F44 G20 Radio Antenna Amplifier Suppression Filter 6835155

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. EB3T-18D816-CF

Ford Ranger Mk3 Central Locking Module Control Unit ECU EB3T-18D816-CF

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N0035558

Volkswagen Jetta A6 USB Adapter Wiring Harness Lead Cable Connector 5N0035558

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FK72-971111-AC

Land Rover Discovery L550 Anti Theft Alarm Wiring Cable Lead FK72-971111-AC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03C906016T

Audi A3 8P 1.4 TFSI CAXC 125HP Engine Control Unit ECU Kit 03C906016T Automatic

€284.95

Free delivery: Aug 10 – 11

If paid before 14:00

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