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 F30 LCI DENSO 170A Alternator Generator 7605060

€37.95

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PDC Display Mercedes W169 W211 Parking Distance Sensor Control Unit A1715420123

€23.95

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BMW E60 E61 E63 E64 LCi Fuse Box Power Distribution Rear 9138830

€23.95

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BMW F20 F30 Central Bass Speaker Stereo Subwoofer Left N/S 9210147

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BMW X5 X6 Series E70 E71 Power Distribution Fuse Box 9114135

€23.95

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Mini R55 R56 R60 R61 Roof Operating Unit Light Switch 3455632

€23.95

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Air Module Mercedes Sprinter W907 W910 Control Module ECU A9079004105

€85.95

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Mercedes W204 W212 Front Door Module Control Unit Module Left N/S A2129004014

€23.95

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€23.95

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€23.95

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Mini Cabrio R57 ECU Air Control Unit Module Controller 3454345

€85.95

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BMW E60 E61 X3 E83 X5 E70 X6 E71 Starter Motor Diesel 7796892

€23.95

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Central Bass Speaker BMW E81 E87 E90 E91 E92 Stereo Audio Right O/S 6925330

€23.95

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Mercedes W212 PDC Wiring Parktronic Parking Sensor Cable Rear A2125405710

€23.95

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BMW F20 F21 F22 F30 F31 F32 LCI Earth Ground Cable Battery Wiring 7614083

€23.95

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Mini Clubman R55 LCI Wiper Motor Actuator Window Right Rear O/S 7168154

€23.95

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Mini R55 R56 R60 R61 Air Module ECU Control Unit Module 9809354

€23.95

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Mercedes W212 Air Bag Control Unit ECU AirBag Sensor Module A2129011105

€28.95

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Audi Q7 4L Yaw Rate Speed Sensor Module 7H0907652A

€23.95

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Yaw Module Mercedes W204 Rotation Rate Acceleration Sensor A0055421918

€23.95

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BMW 1 2 3 Series F20 F21 F22 F30 F31 F32 Connecting Wire Sat Nav Champ/Mask-CID

€32.95

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BMW F01 F10 F11 F30 F31 AHK Towing Hitch Tow Bar Control Module Unit ECU 6856980

€108.95

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Mercedes W176 W212 W246 Voltage Converter Inverter Power Distributor A0009820212

€23.95

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Audi A7 4G8 3.0 TDI CZVA Adblue Control Module Unit ECU 4G0907355G

€23.95

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Distance Control Sensor BMWE81 E87 E90 PDC Parking Sensor Montego Blue 9114342

€23.95

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BMW E92 ECU Body Control Module Junction Box L1 PL2 JBBFE 9134483

€23.95

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BMW E81 E87 E91 Switch Cluster Steering Column Wiper Stalk 6962678

€23.95

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Audi A3 8V Volkswagen VW Golf Mk7 Negative Cable Ground Wire Harness 5Q0971250N

€23.95

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BMW F10 F20 F30 F31 Mini F55 F56 Seat Heating Module Control Unit ECU 7490465

€23.95

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

€23.95

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Volkswagen Polo Touareg Audi A4 A6 A7 A8 Battery Overload Protection 4F0915519

€23.95

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BMW F01 F10 Diversity Aerial Antenna Amplifier Module DAB 9276099

€35.95

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IBS Cable Mini R55 R56 R57 Negative Battery Lead Terminal Wiring Cable 7587465

€23.95

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BMW 3 Series E90 LCI Body Control Module H1 PL2RR JBBFE IIIR 61359229875 9229875

€75.95

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Mini Cooper One R55 R56 R57 LCI R60 Radio Boost CD Player Unit Head 3456995

€237.95

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BMW E92 ECU Body Control Module Junction Box L1 PL2 JBBFE 9177978

€23.95

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Mercedes W204 Parking Sensor PDC Distance Front Tenorite Grey - 755 A2125420018

€23.95

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Mercedes SLK R171 Heated Heating Seat Control Unit Module A1718201626

€47.95

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BMW X3 E53 E60 E61 E64 E65 X5 E83 Power Steering Speed Sensor 6774040

€32.95

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BMW F20 Head Unit Navigation GPS Sat Nav Infotainment DAB High F10 F30 9274570

€113.95

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BMW X3 F25 Antenna Aerial Diversity Amplifier Unit 868 MHZ 9276064

€23.95

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Mercedes W204 Dashboard Dash Navigation Central Display Screen Monitor

€142.95

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BMW X1 E84 E87 E90 E91 E92 LCI Radio CD Professional DAB 9302159

€85.95

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BMW F10 F20 F30 Reversing Camera Rear View Control Unit 9350995

€75.95

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Mercedes W203 W211 C209 M271 Petrol Alternator A2711540802

€56.95

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Display Screen Mercedes W204 W212 Information Navigation Dashboard A2129018103

€23.95

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MINI Cooper One R56 R55 R58 R60 R61 Airbag ECU Control Module 3428715

€23.95

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BMW F20 F21 F22 F30 F31 Alpine CD Champ 2 Radio Player Head Unit 9323784

€42.95

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BMW F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6862756

€23.95

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BMW F06 F13 Sliding Sunroof Drive Motor Unit Webasto 7316535

€47.95

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BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9389657

€23.95

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BMW F20 F21 F30 F31 ECU ICM Plus Air Unit Control Module 6865298

€23.95

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Mini Cooper One Cabrio R50 R52 Air Con A/C Conditioning Pipe Hose Evaporator

€23.95

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BMW 3 Series E90 LCI Body Control Module H1 PL2RR JBBFE IIIR 61359267203 9267203

€23.95

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MINI Cooper One F55 F56 F57 Rear Antenna Aerial Amplifier DAB 9270034

€23.95

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Mercedes W212 Boot Lid Control Unit Trunk Lid Module A2129004203

€23.95

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Preheater System Lead BMW E87 E90 E91 Diesel 7794908

€23.95

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BMW F20 F21 Aerial Antenna Amplifier Diversity DAB 9226885

€23.95

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BMW 1 3 4 Series F20 F21 F30 F31 F32 F33 Cooling Fan Control Unit Radiator

€23.95

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Impact Sensor Mercedes W166 W176 W246 Crash Sensor A1668210151

€23.95

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Mercedes W204 Genuine Universal In Car Black Relay 4-Pin Tyco A0025421319

€23.95

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Headlight Module BMW F07 F10 LEAR TMS Headlamp Control Unit Module 7258278

€61.95

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BMW F15 F16 F31 F36 Module Control Unit Trunk Lid Rear Tailgate Lift 7384722

€23.95

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Mercedes W203 W211 Parking Distance Sensor PDC Iridium Bright Silver

€23.95

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BMW F20 F22 F30 F32 REM Rear Electronic Module Fuse Box Control Unit V5 9866982

€23.95

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Mini Cooper Countryman R58 R60 R61 Aerial Roof Antenna Base Module 9803844

€23.95

Part no. F20 F30 PLUG SOCKET LOOM PDC

PDC Plug BMW F20 F22 F30 F32 Loom Socket Parking Sensor Wiring Harness

€23.95

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Mercedes W207 W906 Fuel Pump Control Unit Module ECU A2129003508

€23.95

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BMW F11 Touring Rear Axle Air Suspension Control Unit ECU Module 6799677

€23.95

Part no. 9183564

BMW E61 E61N LCI Antenna Amplifier Diversity 868 MHZ 9183564 6985531 6934478

€227.95

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Ford Transit MK7 Air Module ECU Control Unit 6C1T14B056AE

€23.95

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Seat Skoda Audi VW Polo Multi Use Control Relay 4 Pin 645 4H0951253A SET X2

€23.95

Part no. 6R0959655K

VW Volkswagen Polo 6R Air Module Control Unit 6R0959655K

€23.95

Part no. 9207913

BMW F20 F21 F22 F30 F31 F32 F33 F36 G30 Fan Motor Relay 9207913

€23.95

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BMW E36 E38 E21 E85 R52 R57 Change-Over Contact Relay Violet 1388911

€23.95

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Audi A6 C7 2.0 TDI SRS Air Module Control Unit Sensor ECU 4H0959655C

€23.95

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BMW F45 F46 F48 Battery Cable IBS Negative Battery Lead 6821206

€23.95

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FEM Module BMW F20 F21 F22 F30 F32 ECU Control Unit Fuse Box 9381104

€66.95

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BMW 1 3 5 6 Series E60 E63 E81 E87 E90 E91 Housing E-Box Fan Blower Motor

€23.95

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Mini R50 R52 R53 R55 R56 R57 R58 R59 R60 5-Pin Black Relay Wiper Set 1472984

€23.95

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Mercedes W212 Siren Alarm Horn Signal Module Unit A0038207726

€23.95

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BMW 1 3 5 Series E60 E87 LCI E90 E91 N47 Preheater System Starter Cable Lead

€23.95

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Wiring Loom Mercedes W639 Vito Cable Front Door Left Right N/O/S A6394407810

€23.95

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Volkswagen Tiguan 5N Engine Bay Fuse Relay Box Terminal 3C0937125A

€23.95

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BMW E60 E61 E63 E64 M5 M6 Power Distribution Fuse Box Rear 6906618

€23.95

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€23.95

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BMW F20 F21 F30 F31 F32 Starter Motor Engine Actuator N47N Diesel 8574102

€23.95

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BMW 1 3 5 E60 E81 E87 E90 E91 Mini R55 R56 DAB Radio Tuner Module 9119357

€23.95

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BMW 1 3 5 Series F10 F20 E90 LCI Wiring Harness Engine Glow Plug Module 7811163

€23.95

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Control Unit Box BMW F20 F21 F22 F30 F31 Engine Ecu Cover 8509722

€23.95

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Air Module BMW F01 F02 LCI F06 F10 F11 F13 ECU Control Unit ECU 9248096

€23.95

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Mini R50 R52 R53 R55 R56 R57 R58 R59 R60 R61 5-Pin Black Relay Wiper 1472984

€23.95

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Cable Wire BMW E60 E61 E81 E87 E90 Tubing For Clamp 7537365

€23.95

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BMW E60 E63 E64 KBM Basis Body Control Module ECU Control Unit 9176069

€23.95

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Front Crash Impact Audi A4 B9 A5 F5 Air Module Sensor Unit 4M0959651

€23.95

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Headlight Control Unit BMW F20 F21 F30 LCI Module FLE2 7492026

€23.95

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Mercedes W176 W207 W212 Keyless Door Lock Module ECU Unit A2129009729

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