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 F10 F11 F20 F21 F30 Control Unit Module Voltage Transformer VSU180 9233143

€23.95

Free delivery: Sep 23 – 24

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Part no. 9233034-SCG

PDC Parking Sensor BMW X5 E70 F10 F11 F12 Ultrasonic Sensor Space Grey 9231283

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009063000

Alternator Generator Mercedes W204 W212 M271 Engine Valeo 150A 14V A0009063000

€94.95

Free delivery: Sep 23 – 24

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Part no. A6519062300

Starter Motor Mercedes W204 W212 OM651 Diesel Engine Starter A6519062300

€23.95

Free delivery: Sep 23 – 24

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Part no. 9462613

Camera Speed Control BMW i3 I01 F10 F20 F30 LCI KaFAS ECU Module Unit 9462613

€23.95

Free delivery: Sep 23 – 24

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Part no. 8570849

BMW F20 F21 F30 F31 LCI 116i 118i 318i B38 Petrol Engine Starter Motor 8570849

€23.95

Free delivery: Sep 23 – 24

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Part no. 03D903025J

Seat Ibiza Skoda Fabia Volkswagen Polo Mk5 6R 1.2 Petrol Alternator 03D903025J

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7591534

BMW F01 F10 F20 F21 F30 F87 Integrated Supply Module Unit 7591534

€23.95

Free delivery: Sep 23 – 24

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Part no. 9315685

BMW 1 2 3 4 Series F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9315685

€47.95

Free delivery: Sep 23 – 24

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Part no. A2469002603

Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

€23.95

Free delivery: Sep 23 – 24

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Part no. 1742690-1

BMW E60 E81 E87 E90 E91 X3 E83 Relay Changer Make Contact Salmon Red Set 1742690

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009067500

Alternator Generator Mercedes W204 W212 Diesel Engine Valeo 180A 14V A0009067500

€66.95

Free delivery: Sep 23 – 24

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Part no. A2059007705

Module Mercedes C205 Transmission Drivetrain Control Module Unit A2059007705

€23.95

Free delivery: Sep 23 – 24

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Part no. 6943585

BMW E65 E66 E67 Control Electronics Seat Occupancy 6943585

€23.95

Free delivery: Sep 23 – 24

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Part no. A0009063903

Alternator Generator Mercedes W205 W213 Diesel Engine Valeo 200A A0009063903

€113.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9304728

PDC Wiring BMW X3 F25 Front Bumper Loom Cable Harness Parking Sensors 9304728

€89.95

Free delivery: Sep 23 – 24

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Part no. A2465400340-1

Mercedes W176 Fuse Relay Box Unit A2465400340 A2469067200

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6951629

BMW Z4 X3 E83 E85 Mini R50 DVD GPS Navigation System Computer 6951629

€99.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9317173

BMW F20 F21 F30 F31 REM Rear Electronic Module Fuse Box Control Unit V1 9317173

€32.95

Free delivery: Sep 23 – 24

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Part no. 9119000

BMW 1 3 Series E87 E90 E91 E92 N43 Air Condition Con Pipe Hose Coolant 9119000

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5QA919294B

Audi A3 8V VW Volkswagen Golf VII PDC Park Assist Control Module Unit 5QA919294B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2048210651

Mercedes W204 Air Module Impact Crash Sensor Door A2048210651

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9289115

Radio Professional BMW E81 E87 E90 E91 LCI Autoradio CD Bluetooth 9289115

€170.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0907355D

Audi A7 4G A8L 4H Ad Blue Control Module Unit ECU 4H0907355D

€32.95

Free delivery: Sep 23 – 24

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Part no. 7176068-2

BMW 3 6 X3 Series E46 E63 E83 MINI R50 R53 Control Unit Xenon Light 1307329074

€23.95

Free delivery: Sep 23 – 24

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Part no. 3420482

BMW X3 E83 Ground Earth Cable Battery Wiring 3420482

€23.95

Free delivery: Sep 23 – 24

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Part no. 9119496

BMW E91 ECU Body Control Module H4 Electronic Box PL2 JBBFE 9119496

€32.95

Free delivery: Sep 23 – 24

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Part no. 5Q0959592B

Audi A3 8V Door Module Control Unit Front Passenger Side 5Q0959592B

€23.95

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Part no. A2118300572

Mercedes A C E Class W169 W203 W211 Temperature Sensor Dew Point A2118300572

€23.95

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Part no. 9321879

BMW F10 LCI Body Control Module Gateway ECU 9321879

€23.95

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Part no. 3452285

BMW X3 Series E83 Boardmonitor Central Information Display Screen 6,5"

€256.95

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Part no. 6906600

Fuse Box Mini Cooper R50 R52 R53 JCW Housing 1509011

€23.95

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Part no. A2129003408

Mercedes W204 W221 Fuel Pump Module Control Unit A2129003408

€23.95

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Part no. A2039000000-1

Mercedes CL203 Head Unit CD Player Radio Audio Controller Unit A2039000000

€66.95

Free delivery: Sep 23 – 24

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Part no. 7646814

BMW F10 F20 LCI F30 B47 Diesel Alternator Generator Denso 210A 7646814

€66.95

Free delivery: Sep 23 – 24

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Part no. 9134707

BMW X5 E60 E61 E63 E64 E70 Control Unit Module Passive Go 9134707

€23.95

Free delivery: Sep 23 – 24

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Part no. 9134667

BMW X5 E70 E87 E90 E91 E92 Seat Control Unit Module ECU 9134667

€42.95

Free delivery: Sep 23 – 24

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Part no. A2049009004

Parking Module Mercedes W204 S204 PDC Distance Control Unit Sensor A2049009004

€23.95

Free delivery: Sep 23 – 24

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Part no. 9176685

Navigation System BMW X3 E83 Z4 E85 Mini R50 R52 DVD GPS Computer Unit

€142.95

Free delivery: Sep 23 – 24

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Part no. 9221861

BMW E90 E91 E93 LCI Front Left Right N/O/S Seat Control Module ECU 9221861

€66.95

Free delivery: Sep 23 – 24

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Part no. 6821135

BMW F20 F21 F22 F30 F31 Head Unit Media DAB Navigation Business Headunit 6821135

€113.95

Free delivery: Sep 23 – 24

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Part no. 4G0035061J

Audi A7 4G A4 B8 A6 C7 Q5 8R Sat Navi Stereo Radio Audio Unit Player 4G0035061J

€284.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9399247

BMW F20 F30 F31 F32 ECU Camera Module Based Drive Support

€23.95

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Part no. 6G9T-14B192-AA

Ford Mondeo Transit Relay 4-Pin Black FoMoCo Unit 6G9T-14B192-AA

€23.95

Free delivery: Sep 23 – 24

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Part no. 9151516

BMW E60 E63 E64 LCI Body Control Unit Module 9151516

€23.95

Free delivery: Sep 23 – 24

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Part no. A1695450001

Mercedes-Benz A B Class W169 W245 Fuse Box Relay Module Unit A1695450001

€23.95

Free delivery: Sep 23 – 24

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Part no. 6864208

BMW F20 F21 F22 F30 F31 Air Module ECU ICM Control Unit 6864208

€23.95

Free delivery: Sep 23 – 24

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Part no. 3Q0907530L

VW Volkswagen Golf SV Gateway Control Unit Module ECU GW MQB High 3Q0907530L

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8510249

Engine Wiring BMW E90 E91 LCI N47N Loom Harness Cable Automatic Gearbox 8510249

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0035541S

Audi Q7 4L Radio Multimedia Receiver Control Module Unit 4E0035541S

€32.95

Free delivery: Sep 23 – 24

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Part no. 9234421

Fuse Box BMW F01 F02 F07 F10 F11 Power Distribution Front 9234421

€23.95

Free delivery: Sep 23 – 24

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Part no. 6941018

BMW 5 6 Series E60 E61 E63 Airbag ECU Control Unit Centre Vehicle Sensor

€23.95

Free delivery: Sep 23 – 24

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Part no. 9266328

ICM Module BMW F07 GT F01 F02 F03 F04 Air Module Control Unit ECU 9266328

€23.95

Free delivery: Sep 23 – 24

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Part no. 8P1862335

Audi A3 8P Telematics Bluetooth Module Control Unit ECU 8P1862335

€23.95

Free delivery: Sep 23 – 24

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Part no. A2079011700

Air Module Mercedes W204 W207 Air Module SRS Control Unit ECU A2079011700

€23.95

Free delivery: Sep 23 – 24

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Part no. 9148267

BMW 3 Series E93 Seat Control Unit Module FSV 7.11.0 9148267

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0915181A

Audi A5 F5 HV Battery Negative Cable Terminal 8W0915181A

€28.95

Free delivery: Sep 23 – 24

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Part no. 9154331

BMW MINI Clubman R55 Cable Wiring Loom Splitdoor Split Door Rear Right O/S

€23.95

Free delivery: Sep 23 – 24

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Part no. 9345374

BMW F10 LCI Light Control Footwell Module ECU Unit FRM3 9345374

€70.95

Free delivery: Sep 23 – 24

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Part no. 7649087

BMW F20 LCI N20 F22 N26 Wiring Loom Harness Engine Module Ignition

€23.95

Free delivery: Sep 23 – 24

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Part no. 5Q0959592E

Audi A3 8V Front Door Module Control Unit Module Right O/S ECU 5Q0959592E

€23.95

Free delivery: Sep 23 – 24

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Part no. 9352861

FEM Unit BMW F20 F22 F30 F32 Control Unit Module ECU Fuse Box 9352861

€142.95

Free delivery: Sep 23 – 24

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Part no. A2129014204

Mercedes-Benz W212 ECU Air Control Unit Sensor Module A2129014204

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0141541102

Alternator Generator Mercedes W204 W207 Diesel Engine Valeo 150A A0141541102

€94.95

Free delivery: Sep 23 – 24

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Part no. 9350003

Safety Control Unit BMW F01 LCI F07 F10 F11 F25 Air Module Bag ECU 9350003

€23.95

Free delivery: Sep 23 – 24

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Part no. A2129005812

Mercedes S204 Estate SAM Module Fuse Box Relay Control Unit A2129005812

€70.95

Free delivery: Sep 23 – 24

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Part no. A9075406960-1

Mercedes Sprinter W907 Fuse Box Prefuse Box Module F150/1 - MFB-1 A9075406960

€37.95

Free delivery: Sep 23 – 24

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Part no. 9127768

BMW E60 E61 Positive Battery Cable Plus Pole Lead 61129127768 9127768

€23.95

Free delivery: Sep 23 – 24

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Part no. 4F0959795P

Audi A6 C6 Rear Left N/S Door Lock Control Module Unit ECU 4F0959795P

€23.95

Free delivery: Sep 23 – 24

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Part no. 1826146

Ford Transit Custom 2.2 TDCi Glow Plug Wiring Loom Cable Wire CK2T-6M091-AD

€23.95

Free delivery: Sep 23 – 24

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Part no. 8P0959655P

Audi A3 8P Air Module Control Unit ECU Module 8P0959655P

€23.95

Free delivery: Sep 23 – 24

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Part no. 6935599

BMW 1 3 Series E81 E87 E90 PDC Parking Ultrasonic Sensor Red Japanrot Japan Red

€23.95

Free delivery: Sep 23 – 24

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Part no. A2118702726

Mercedes C E Class W203 W211 Bluetooth Control Unit Module ECU A2118702726

€23.95

Free delivery: Sep 23 – 24

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Part no. A2711541402

Mercedes W203 W204 M271 Engine Alternator Generator Valeo 120A 14V A2711541402

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9122100

BMW 1 Series E88 Mini Cooper R57 R59 Sat Nav GPS Antenna Amplifier 9122100

€28.95

Free delivery: Sep 23 – 24

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Part no. 6978271

BMW E87 E90 E91 E92 Front Power Distribution Fuse Box 6906622

€23.95

Free delivery: Sep 23 – 24

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Part no. 6819333

BMW F30 Rear Body Control Unit Module V2 6819333

€23.95

Free delivery: Sep 23 – 24

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Part no. 3442123

Mini Cooper One R55 R56 LCI Aerial Base Roof Antenna 3442123

€61.95

Free delivery: Sep 23 – 24

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Part no. 6886185

BMW F20 F21 F30 F31 ICM Module Air Module Control Unit ECU 6886185 0265020864

€23.95

Free delivery: Sep 23 – 24

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Part no. 9224872

BMW 1 2 3 4 Series F20 F21 F30 F80 Cover Power Distribution Fuse Box 9224872

€23.95

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Part no. A1729009302

Mercedes W212 W221 Media Interface Control Unit Module A1729009302

€23.95

Free delivery: Sep 23 – 24

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Part no. 9258350

Air Module BMW F20 F21 F22 F30 F31 F32 Control Unit ECU 9258350

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6G9T-14B192-AA-1

Ford Mondeo Transit Relay 4-Pin Black FoMoCo Unit 6G9T-14B192-AA SET X2

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2049004106

Parktronic Module Mercedes W204 PDC Parking Sensors Control Unit A2049004106

€23.95

Free delivery: Sep 23 – 24

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Part no. CC11-12A650-AB

Ford Transit Engine Control Unit ECU 4VFB Module 2.2 TDCi CC11-12A650-AB

€189.95

Free delivery: Sep 23 – 24

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Part no. 9168336

BMW X1 E84 Diversity Aerial Antenna Amplifier DAB 9168336

€37.95

Free delivery: Sep 23 – 24

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Part no. 1K0915333H

Audi A3 8P Battery Box Tray Housing Holder Bracket Cover Mount 1K0915333H

€23.95

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Part no. 9263800

BMW E90 LCI ECU Footwell Light Module FRM3R Rear Led Basis 9263800

€75.95

Free delivery: Sep 23 – 24

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Part no. 8509722

BMW 1 Series F20 F21 F22 F30 F31 F35 Control Unit Box Engine 8509722

€23.95

Free delivery: Sep 23 – 24

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Part no. 6940237

Wiring Cable AUX BMW E90 E91 E92 E93 Loom Kit Jack Plug Input 375MM 6940237

€23.95

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Part no. A1669005511

Door Module Mercedes W176 W246 Front Left N/S Control Unit VST A1669005511

€23.95

Free delivery: Sep 23 – 24

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Part no. A2118200885

Mercedes W211 S211 Bluetooth Control Unit Module ECU A2118200885

€23.95

Free delivery: Sep 23 – 24

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Part no. 5Q0907357

Audi A3 8V Headlight Head Light Lamp Range Control Unit Module ECU 5Q0907357

€23.95

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Part no. 9280185

Air Module BMW F10 F11 F01 F02 F03 LCI Control Unit ECU 9280185

€23.95

Free delivery: Sep 23 – 24

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Part no. A2035450803

Mercedes W203 Battery Terminal Fuse Box Electrical Unit A2035450803

€23.95

Free delivery: Sep 23 – 24

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Part no. 9226333

BMW E93 ECU Body Control Module H3 Junction Box PL2RR JBBFE IIIR 9226333

€80.95

Free delivery: Sep 23 – 24

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Part no. 9285504

Distributor BMW X5 F15 X6 F16 B + Battery Power Distributor 9285504

€23.95

Free delivery: Sep 23 – 24

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Part no. 9369124

BMW F10 F20 F30 Front Seat Control Unit Module Memory 9280913

€23.95

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Part no. A2118701885

Mercedes ML W164 Control Unit Module DC UHI MOST A2118701885

€23.95

Free delivery: Sep 23 – 24

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