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 F20 F21 F22 F30 F31 LCI Head Unit Sat Nav Radio Media Navigation 8708257

€621.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 420035223C

Audi R8 42 Spyder Audio Amplifier System Unit Control Unit Module 420035223C

€417.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1715409606

Mercedes R171 Wiring Cable Harness Front Passenger Door Wiring Loom A1715409606

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9389600

BMW Gran Turismo G32 Radio Aerial Antenna Amplifier AM/FM 9389600

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5WA915181C

Audi S3 8Y DNFB HV Battery Negative Terminal Cable Wire 2.0 TFSI 5WA915181C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. LR051573

Land Rover Freelander 2 L359 Cable Wiring Harness Battery Positive DH5214A280BBD

€56.95

Free delivery: Sep 14 – 15

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Part no. 02E911023S

Audi TT 8J 2.0 TFSI CESA Petrol Engine Starter Motor 02E911023S

€37.95

Free delivery: Sep 14 – 15

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Part no. FK72-13404-AF-2

Land Rover Discovery L550 Rear Lamp Tillight Plug Cable Right O/S FK72-13404-AF

€23.95

Free delivery: Sep 14 – 15

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Part no. 8T0971029AG

Audi A5 8T Coupe Front Door Wiring Loom Harness Driver's Side 8T0971029AG

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6402002770-1

Alternator Belt Tensioner Mercedes W169 W245 OM640 Diesel Holder Mounting Panel

€32.95

Free delivery: Sep 14 – 15

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Part no. A1664409708

Mercedes ML GLE W166 Starter Wiring Loom Harness Cable OM651 Diesel A1664409708

€70.95

Free delivery: Sep 14 – 15

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Part no. A2054406633

Mercedes C205 Door Wiring Front Door Left N/S wiring Harness A2054406633

€23.95

Free delivery: Sep 14 – 15

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Part no. FH22-14D374-AC

Land Rover Discovery 4 L319 Air Module Control Unit ECU FH22-14D374-AC

€56.95

Free delivery: Sep 14 – 15

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Part no. 99664512902

Porsche Carrera 996 Radio Audio System Head Unit CDR-23 Becker 99664512902

€332.95

Free delivery: Sep 14 – 15

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Part no. 9296967

BMW F10 F11 LCI PDC Wiring Loom Harness Front Parking Sensor Cable 9296967

€56.95

Free delivery: Sep 14 – 15

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Part no. 8F0971030BD

Audi A5 8F Front Door Electric Wiring Loom Harness Passenger's Side 8F0971030BD

€42.95

Free delivery: Sep 14 – 15

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Part no. DK52-14B518-FD

Range Rover L405 Rear Door Ambient Light Wiring Harness Right O/S DK52-14B518-FD

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DPLA-18A828-AC

Land Range Rover Sport L494 L405 Display Screen Control Module DPLA-18A828-AC

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. M9R3-19H440-BE

Range Rover Evoque L551 Keyless Entry Control Module Unit ECU M9R3-19H440-BE

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8570848

Mini Cooper One D F54 F55 F56 F57 Engine Starter Motor Diesel Bosch 8570848

€37.95

Free delivery: Sep 14 – 15

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Part no. LHD-R56-CARPLAY

Mini R56 R57 Display Screen Instrument Cluster Speedo Android CarPlay 4+64GB LHD

€284.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1635400382

Mercedes ML W163 Fuse Relay Box ECU Cover Trim A1635400382

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1715451701

Mercedes SLK R171 Fuse Box SAM Relay Control Unit Module A1715451701

€279.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9438239

BMW X4M F98 A/C Air Condition Climate Control Unit ECU 9439239

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6569000200-1

Mercedes W213 E400d OM656.929 Diesel Engine ECU Kit A6569000200 Automatic

€569.95

Free delivery: Sep 14 – 15

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Part no. AB39-15K601-AB

Ford Ranger Mk6 Button Remote Flip Key Fob AB39-15K601-AB

€28.95

Free delivery: Sep 14 – 15

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Part no. 8W8035225

Audi A5 F5 Radio Aerial Antenna Amplifier Right Upper O/S 8W8035225

€28.95

Free delivery: Sep 14 – 15

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Part no. 1358032

Ford Focus Mk2 Engine Knock Sensor Control Unit 2.0 Petrol Engine 1S7A-12A699-BB

€28.95

Free delivery: Sep 14 – 15

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Part no. 5A82646

Mini F65 F66 F67 Battery Housing Cover Trim Holder Mount Upper 5A82646

€32.95

Free delivery: Sep 14 – 15

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Part no. 7N0907530AH

Volkswagen Scirocco Mk3 Central Gateway Control Module 7N0907530AH

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. UR58-57-K30B

Ford Ranger Mk4 Air Module Control Unit ECU UR5857K30B

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4M5T14B056BJ

Ford Focus Mk2 Air Module Control Unit SRS ECU Bosch 4M5T14B056BJ

€23.95

Free delivery: Sep 14 – 15

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Part no. 9228293

BMW X3 F25 Interior Door Wiring Loom Harness Cable Connector 9228293

€23.95

Free delivery: Sep 14 – 15

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Part no. BH42-14N030-AA

Range Rover L322 Rear Fuse Box Control Module Unit BH42-14N030-AA

€23.95

Free delivery: Sep 14 – 15

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Part no. A1178207061-2

Mercedes CLA C117 LED Headlight Lamp Front Driver's Side Wire Loom A1178207061

€23.95

Free delivery: Sep 14 – 15

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Part no. 8X0919603B

Audi S1 8X Stereo Display Media SAT NAV Screen MMI Multifunction 8X0919603B

€113.95

Free delivery: Sep 14 – 15

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Part no. 4G0937517

Audi A6 C7 Fuse Battery Junction Box Fuse Distribution Terminal Centre 4G0937517

€23.95

Free delivery: Sep 14 – 15

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Part no. CPLA-14F441-LD

Range Rover L405 BCM Module Body Control Unit ECU CPLA-14F441-LD

€32.95

Free delivery: Sep 14 – 15

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Part no. 8574752-1

BMW F25 20dX B47 190HP Engine Unit ECU Kit DDE 8574752 CAS4 Key Automatic

€379.95

Free delivery: Sep 14 – 15

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Part no. 8X0907159C

Audi A1 8X Impact Sound Actuator Control Module 8X0907159C

€23.95

Free delivery: Sep 14 – 15

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Part no. 4G0907637K

Audi A7 4G8 ESP Yaw Rate Module Control Unit Sensor ECU 4G0907637K

€56.95

Free delivery: Sep 14 – 15

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Part no. GH22-10E889-AD

Land Rover Discovery 4 L319 Sat Nav Display Screen GH22-10E889-AD

€123.95

Free delivery: Sep 14 – 15

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Part no. 9286217

BMW F31 F31 LCI Door Wiring Harness Loom Driver's Side 9286217

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. YTB000080

Land Rover Freelander L314 Negative Minus Pole Battery Cable Wiring YTB000080

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. YIC000070

Land Range Rover L322 Navigation Computer Control Module ECU Sat Nav YIC000070

€165.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8F0971029AP

Audi A5 8F Door Wire Harness Cable Loom Wiring Front Driver's Side 8F0971029AP

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. M8A2-15B484-BB

Range Rover Velar L560 Rear Bumper Wiring Harness Cable M8A2-15B484-BB

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6519007401-1

Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine ECU A6519007401 Key

€303.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2139001710

Keyless Go Mercedes W213 W222 Keyless Entry Control Unit Module A2139001710

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2056102702

Mercedes W205 Battery B Engine Compartment Terminal Point A2056102702

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7520019-1

Mini Cooper One R50 Petrol W10 W11 Engine Control Unit DME 7520019 Manual

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469006816

Mercedes W176 W231 W246 Electric Parking Brake Control Unit Module A2469006816

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2819002707

Smart ForTwo C453 M281.920 71HP Engine Control Unit ECU 237105748R Automatic

€85.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AM5T-14A597-AC

Ford C-Max Mk2 Front Windscreen Sun Light Solar Sensor Unit AM5T-14A597-AC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8X0959673

Audi A1 8X Windscreen Heating Control Switch 8X0959673

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0005405950

Mercedes W906 Starter Wiring Fuse Box Terminal Block Cable Harness A0005405950

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9301523

BMW 5 Series F07 F10 F11 CAS4 Control Unit Key Reading Module 9301523

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9218702

Rain Sensor BMW F10 F11 Light Solar Fogging Control Unit 9218702

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 420035225R

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CPLA-17D547-AC

Land Rover Range Rover L405 Windscreen Rain Sensor Module CPLA-17D547-AC

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L0937401B-1

VW Volkswagen Touareg 7L Power Distribution Box Control Unit Plus 7L0937401B

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2135407044

Mercedes W213 Door Wiring Loom Harness Cable Front Passenger's Side A2135407044

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T0945096-1

Audi A5 8T Rear Tail Light Lamp Wiring Cable Plug Right O/S Outer 8T0945096

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3WA959595A

Audi A3 RS3 8V Door Control Unit ECU Module Front Driver's Side 3WA959595A

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5GV051629E

Volkswagen Smart DataPlug Bluetooth OBD Smartphone Connect Dongle 5GV051629E

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6401500734

Mercedes W169 W245 A200 B200 CDI OM640.941 140HP Engine Module ECU A6401500734

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8F0971035D

Audi A5 S5 8F Door Trim Panel Wiring Harness Loom Driver's Side 8F0971035D

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1729000102

Mercedes SLK R172 GPS Navigation System Screen Display A1729000102

€118.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. C1BT-15K603-BA

Ford Fiesta Mk7 Aerial Antenna Amplifier Control Unit Module C1BT-15K603-BA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HJ32-14463-CA

Range Rover Evoque L538 Battery Terminal Managment System HJ32-14463-CA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HPLA-14A073-FC

Range Rover Sport L494 Fuse Box Control Unit HPLA-14A073-FC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03F906070GN-2

Audi A1 8X 1.2 TFSI CBZA 86HP Engine Control ECU Kit 03F906070GN Manual

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8P0862335M

Audi A4 B7 RS3 8P R8 42 TT 8J Bluetooth Interface Module Unit MMI 8P0862335M

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9306084

BMW F20 F21 F22 F30 F31 Front Seat Module Control Unit 9306084

€151.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6G9T-14A076-JC

Land Rover Freelander 2 L359 Fuse Box Cover Lid Panel Trim 6G9T-14A076-JC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4R83-9G768-AA

Range Rover Sport L320 Cruise Distance Control Module 4R83-9G768-AA

€127.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2129002401

Mercedes S212 Air Suspension Control Module A2129002401

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8674258-1

Mini F54 F55 F57 B48 136HP Engine Control ECU Kit DME 8674258 Automatic

€284.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. M8D2-14C361-AA

Land Rover Range Rover Evoque L551 Water Pump Harness Loom Wiring M8D2-14C361-AA

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. JPLA-14C239-BB

Range Rover Evoque L551 Climate Control Unit Module ECU JPLA-14C239-BB

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469050201

Mercedes C117 X156 Antenna Amplifier Control Unit Module A2469050201

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1635450716

Mercedes W163 FBS Switch Keyless Entry Module Control Unit ECU A1635450716

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BJ32-19C164-BF

Land Rover Range Rover Evoque L538 Audio Amplifier Module Control BJ32-19C164-BF

€493.95

Free delivery: Sep 14 – 15

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Part no. BV6T-17D547-AD

Ford Transit Mk8 Front Window Windscreen Rain Light Sensor BV6T-17D547-AD

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C0915336A

Audi A3 8P Battery Box Tray Covering Housing Trim Holder Bracket 3C0915336A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6819651

BMW X5 F15 Rear Fuse Box Distribution Relay Module Control ECU Unit 6819651

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A28FC6

Mini F65 F66 F67 Engine Control ECU Mount Bracket Support 5A28FC6

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W1907064AA

Audi A4 B9 A5 F5 Comfort Body Control Module Unit ECU 8W1907064AA

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4G5971687BH

Audi A6 C7 4G Rear Door Harness Wiring Loom Cable Left Right N/O/S 4G5971687BH

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2514401409

Mercedes ML W164 Door Wiring Harness Front Left Right N/O/S Loom A2514401409

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L906018JG-4

Audi A5 8F 2.0 TDI CGLC 177HP Diesel Engine ECU Kit Key Lock 03L906018JG Manual

€85.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8XA035193

Audi A1 8X Navigation Head Unit Radio Audio MMI CD Player Stereo 8XA035193

€569.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8582280-4

BMW F20 116d N47N 116HP Engine Control ECU DDE 8582280 Automatic Transmission

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4K0035710

Audi A6 C8 Front A Pillar Column Dashboard Speaker Right O/S 4K0035710

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A207E7

BMW X3 G01 G20 G21 G30 G31 Audio Speaker Sound Amplifier Harman 5A207E7

€379.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6814609

BMW 1 3 5 Series F10 F20 F30 Bus Interface Connector Data Terminating 6814609

€23.95

Free delivery: Sep 14 – 15

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Part no. 4S41-12A650-BB

Ford Transit Connect 1.8 TDCI Engine Control Module ECU 4S41-12A650-BB Manual

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009058112

Mercedes C118 W177 W247 Negative Battery Terminal Cable Lead A0009058112

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5WA980653E

Audi A3 S3 8Y Front Camera FAS Lane Assistance Control Unit 5WA980653E

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

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