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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Signal Actuation Module Mercedes W176 W246 SAM Control Unit ECU A1569007702

€23.95

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Part no. 8U0955559B

Audi A5 8T Windscreen Rain Sensor Control Unit 8U0955559B

€23.95

Free delivery: Sep 11 – 14

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Part no. 6951629

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

€99.95

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Part no. 5M0907357C

Volkswagen VW Tiguan 5N Headlight Range Control Unit Module ECU 5M0907357C

€23.95

Free delivery: Sep 11 – 14

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Part no. 6G9T-14B192-DA

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

€23.95

Free delivery: Sep 11 – 14

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Part no. 9230046

BMW 1 2 SERIES F20 F20N F21 F22 UNDER CAR POSITIVE BATTERY LEAD CABLE 9230046

€37.95

Free delivery: Sep 11 – 14

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Part no. A2118705426

Rain Sensor Mercedes W211 C219 Front Windscreen Control Unit A2118705426

€23.95

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If paid before 14:00

Part no. 9288304

FEM Module BMW F20 F21 F22 F30 F31 F32 F36 Control Unit 9288304

€51.95

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Part no. 1489994

Mini R50 R52 Starter Motor Engine W10 0,9KW Bosch Actuator 1489994

€23.95

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Part no. A0035422319

Mercedes W176 W246 Relay Battery Decoupling 12V A0035422319

€23.95

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Part no. 6909776

BMW X5 Series E53 Control Element Light Switch 6909776

€23.95

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Part no. A2045400708

Mercedes-Benz W204 Parking Sensor Wiring Cable Harness Rear PDC A2045400708

€23.95

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Part no. 6786139

BMW 5 7 Series E60 E65 Control Unit Dynamic Drive Front Axle Suspension

€23.95

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Part no. 1K0955557A

VW Volkswagen Audi Seat Skoda Airbag Crash Impact Sensor SRC 1K0955557A

€23.95

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Part no. 8621839

BMW F20 F21 F30 LCI G30 B38 B48 Starter Motor Engine Petrol 8621839

€23.95

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Part no. 9200503

BMW E60 LCI F01 F07 F10 ECU USB Hub Control Unit Module 9200503

€23.95

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Part no. A2139004119

Module Mercedes W205 Drivetrain Gearbox Control Module Unit A2139004119

€104.95

Free delivery: Sep 11 – 14

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Part no. A2049005908-2

Mercedes W204 Navigation CD Player COMAND Radio Sat Nav Head Unit A2049005908

€113.95

Free delivery: Sep 11 – 14

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Part no. 8T0907468AD

Audi A4 B8 Gateway Interface Control Unit Module ECU 8T0907468AD

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9273188

BMW E81 E87 E90 LCI Professional Navigation Car Radio Player CIC 9273188

€237.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0061510301

Mercedes W169 W245 Petrol Engine Starter Motor M266 A0061510301

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8X0959792H

Audi Q3 8U Door Module Front Door Left N/S Control Module 8X0959792H

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A9068204126

Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9068204126

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2465407832

Battery Cable Mercedes W176 W246 Positive Wiring Starter Harness A2465407832

€170.95

Free delivery: Sep 11 – 14

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Part no. 9197002

BMW X5 Z4 E70 E89 HiFi Stereo Audio Sound System Amplifier 9197002

€47.95

Free delivery: Sep 11 – 14

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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. A1765405408

Mercedes-Benz A-Class W176 Front Door Cable Wiring Loom Harness A1765405408

€23.95

Free delivery: Sep 11 – 14

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Part no. 420919275-IWH

Audi A4 A5 Q7 Rear Bumper PDC Parking Sensor Ibis White - Y9C 420919275

€23.95

Free delivery: Sep 11 – 14

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Part no. A6459060800

Starter Motor Mercedes W176 W246 C117 Diesel Engine Denso A6459060800

€23.95

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Part no. 6985878-1

BMW 5 Series E60 E61 LCI Actuator Fuel Filler Flap Lock 67116985878 6985878

€23.95

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Part no. 9284331-3

Roof Light Mini R55 R56 R60 R61 Operating Control Unit Switch 3455632

€23.95

Free delivery: Sep 11 – 14

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Part no. A2465410005

Mercedes W176 W246 Battery Cover Fuse Box Trim Panel Lid A2465410005

€23.95

Free delivery: Sep 11 – 14

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Part no. A0025450801

Fuse Holder Mercedes W169 W245 W906 Electrical Fuse Box Bracket A0025450801

€23.95

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Part no. 9382516

PDC Module BMW F15 F16 F25 Mini F55 F56 Parking Assistant Control Unit 9382516

€37.95

Free delivery: Sep 11 – 14

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Part no. A0025450901

Mercedes W169 W245 W906 Fuse Holder Electrical Fuse Box Bracket A0025450901

€23.95

Free delivery: Sep 11 – 14

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Part no. 9259466

BMW 1 3 4 Series F20 F21 F30 F31 F32 Power Distribution Fuse Box Rear

€23.95

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Part no. 7514342

BMW E34 Z4 E85 Base B Terminal Point Engine Compartment 7514342

€23.95

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Part no. 3Q0907530G

Audi S3 8V Central Gateway Control Unit Module Relay ECU 3Q0907530G

€23.95

Free delivery: Sep 11 – 14

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Part no. A0325453132

Gearbox Module Mercedes SLK R171 Automatic Transmission Unit EGS A0325453132

€23.95

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Part no. A2118703226

Mercedes W245 Bluetooth Control Unit Module Hands Free A2118703226

€23.95

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Part no. 8T0035462

Audi A5 8T MMI Multimedia Interface Unit Module Control ECU 8T0035462

€23.95

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Part no. 9367350

KaFAS Camera BMW F10 F20 F30 Mini F55 F56 Front Control Unit Module ECU 9367350

€28.95

Free delivery: Sep 11 – 14

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Part no. A1179001802

Mercedes W176 Air Module Belt Locking System Control Unit Module ECU

€61.95

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Part no. 5M5T14B192CA

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO SET 5M5T14B192CA

€23.95

Free delivery: Sep 11 – 14

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Part no. 8583451

BMW F20 F21 F30 LCI F32 Engine Starter Motor Diesel B37 B47 8583451

€23.95

Free delivery: Sep 11 – 14

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Part no. 8576341

BMW F20 F21 F30 F31 118d 318d 143HP N47N Engine Control ECU DDE 8576341 Manual

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2661503033

Mercedes W169 W245 M266 Petrol Engine Wiring Harness Loom A2661503033

€47.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2079013700

Mercedes-Benz E-Class W207 Windscreen Windshield Rain Sensor Control Unit

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2609060100

Mercedes C118 W177 W247 M260 Petrol Engine Starter Motor 12V A2609060100

€56.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6762235

BMW X3 X5 E53 E60 E61 E65 E83 Power Steering Speed Sensor 6762235

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0009000716

Mercedes Vito W447 Diesel Adblue Module Control Unit ECU A0009000716

€94.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0009002308

Mercedes W447 W906 Adblue Module Exhaust Gas Control Unit ECU A0009002308

€89.95

Free delivery: Sep 11 – 14

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Part no. 9257366

BMW 5 7 Series F01 F10 LCI Aerial Antenna Amplifier Diversity 868 MHZ 9257366

€42.95

Free delivery: Sep 11 – 14

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Part no. 7181313

BMW X1 E84 E90 E91 Door Handle LED Light Lighting Left N/S 7181313

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 5Q0919294K

Audi RS3 8V PDC Parking Distance Control Sensor Module Unit ECU 5Q0919294K

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9257093

Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9257093

€151.95

Free delivery: Sep 11 – 14

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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 11 – 14

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Part no. A2118704926

Seat Module Mercedes W164 W203 W211 C219 Front Memory Control Unit A2118704926

€23.95

Free delivery: Sep 11 – 14

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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 11 – 14

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Part no. 9282118

BMW F10 CAS4 Control Unit Module 9282118 61359282118

€66.95

Free delivery: Sep 11 – 14

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Part no. A2098205026

Mercedes W209 Convertible Roof Module Folding Top Control Unit ECU A2098205026

€23.95

Free delivery: Sep 11 – 14

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Part no. 9253563

BMW F20 F21 Wire Cable Plug Wiring Diagnostic Socket OBD 9253563

€23.95

Free delivery: Sep 11 – 14

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Part no. A2469050101

Mercedes W176 W246 Rear Boot Lid Tailgate Antenna Booster Amplifier

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8J0959433B

Audi TT 8J BCM Body Comfort Convenience Module Unit ECU 8J0959433B

€47.95

Free delivery: Sep 11 – 14

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Part no. 8K0959655N

Audi A4 B8 A5 8T Air Module Control Unit ECU 8K0959655N

€23.95

Free delivery: Sep 11 – 14

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Part no. 9216128

BMW 3 4 5 Series E92 F32 E61 LCPA Seat Belt Module ECU 9216128

€23.95

Free delivery: Sep 11 – 14

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Part no. 8X0907063AB

Audi A1 8X BCM Body Control Module Power Supply Unit 8X0907063AB

€37.95

Free delivery: Sep 11 – 14

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Part no. 6926459

BMW X1 E81 E82 E84 E87 E88 E90 E91 E92 Climate Control Solar Sensor 6926459

€23.95

Free delivery: Sep 11 – 14

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Part no. 6864204

ICM Module BMW F20 F21 F30 F31 Control Unit 6864204

€23.95

Free delivery: Sep 11 – 14

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Part no. 9803844

Mini Cooper Countryman R60 R61 Aerial Roof Antenna Base Module 9803844

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8507885

BMW 1 3 Series F20 F30 Diesel N47N Wiring Harness Engine Gearbox Module 8507885

€37.95

Free delivery: Sep 11 – 14

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Part no. 6798242

ICM Module BMW F10 F11 Integrated Chassis Management QL ES Control Unit 6798242

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 6819336

BMW F20 F21 F22 F30 F31 F32 F33 Fuse Box Body Control Unit Module REM V5 6819336

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 9229294

BMW F20 F21 F22 F30 F31 F80 M3 USB Socket Plug Port Control Unit 9229294

€23.95

Free delivery: Sep 11 – 14

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Part no. 8E0951253

Fuel Pump Module Audi A4 B7 A6 C6 Q7 4L Sender Control Relay Unit ECU 8E0951253

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0018204535

Microphone Mercedes W639 W906 Hands-Free Interior Mic Unit A0018204535

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. 8792148

Navigation Headunit BMW F20 F22 F30 Mini F55 F56 Head Unit Basic Media

€104.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2469004512

Mercedes-Benz A M Class W166 W176 Parking Brake Control Unit Module ECU

€23.95

Free delivery: Sep 11 – 14

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Part no. A0009820412

Mercedes W176 W205 W212 Voltage Converter Power Distributor Plug A0009820412

€23.95

Free delivery: Sep 11 – 14

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Part no. A0009055504-TNG1

Mercedes W166 C207 Front Rear PDC Parking Distance Sensor Tenorite Grey - 755

€23.95

Free delivery: Sep 11 – 14

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Part no. 3C0915443A

Audi A3 8P Battery Box Tray Covering Housing Trim Holder Bracket 3C0915443A

€23.95

Free delivery: Sep 11 – 14

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Part no. A2035454932

Parking Module Mercedes W203 C209 Parktronic Control Unit A2035454932

€23.95

Free delivery: Sep 11 – 14

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Part no. 9812535

Mini Cooper Countryman R60 Fuse Distribution Box Module 9812535

€142.95

Free delivery: Sep 11 – 14

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Part no. 8376445

BMW X3 X5 E53 E83 E46 E39 LCI Switch Unit Steering Column 8376445

€28.95

Free delivery: Sep 11 – 14

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Part no. 9136039

BMW E60 E63 Body Control Module ECU Control Unit 9136039

€23.95

Free delivery: Sep 11 – 14

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Part no. A2129003614

Fuse Box Mercedes W212 Rear Relay Control Unit Electric Module SAM A2129003614

€118.95

Free delivery: Sep 11 – 14

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Part no. 6913896

BMW Z4 E85 E86 Aerial Antenna Amplifier Module Rod 6913896

€23.95

Free delivery: Sep 11 – 14

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Part no. 6927846

BMW E81 E87 E90 E91 E92 Suction Pipe Evaporator Compressor 6927846

€23.95

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Part no. 9286941

BMW F10 ECU Body Control Module Junction Box V2 PL6 JBBFE III 9286941

€23.95

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Part no. 6960803

BMW E65 E66 E67 Control Unit Voice Input System Module 6960803

€23.95

Free delivery: Sep 11 – 14

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Part no. 2753722

Mini Cooper R55 R56 Drivers Side Right O/S Electric Window Lifter Motor Door

€23.95

Free delivery: Sep 11 – 14

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Part no. 9264916

BMW E82 E88 E92 E93 LCI Control Unit Airbag ECU NO CRASH DATA 9264916

€23.95

Free delivery: Sep 11 – 14

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Part no. A2079058802

Roof Antenna Mercedes W204 W212 Shark Aerial Antenna Cable Harness A2079058802

€32.95

Free delivery: Sep 11 – 14

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Part no. 9204545

Hands Free Bluetooth Module BMW E81 E87 E90 E91 Electronics MULF2 9204545

€23.95

Free delivery: Sep 11 – 14

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Part no. 6820931

Telematics Module BMW X1 F48 F20 F30 Bluetooth GPS Control Unit ECU 6820931

€28.95

Free delivery: Sep 11 – 14

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Part no. 9301309

Air Conditioning Unit BMW F20 F21 F30 F31 Control Unit A/C Module 9301309

€23.95

Free delivery: Sep 11 – 14

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Part no. 6855995

Control Unit Module BMW F20 F21 F22 F30 F31 ECU ICM Plus 6855995

€23.95

Free delivery: Sep 11 – 14

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Part no. A6519060026-1

Starter Motor Mercedes W204 W212 W639 OM651 Diesel Engine Denso DSN967

€23.95

Free delivery: Sep 11 – 14

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Part no. 9362848-1

Telematics Module BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Unit 9342881

€23.95

Free delivery: Sep 11 – 14

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