Automotive electrical systems
More informationAt 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 Mini Cooper One R56 High SPEG DC/DC H3 Fuse Distribution Box 3451927
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VW Volskwagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342F
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Mini R55 R56 R58 R59 R60 Fuse Box Relay Electrical System Distribution 9213372
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Mercedes X156 GLE W166 Surround View Camera Control Unit Module A1569003303
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Audio Amplifier BMW F20 F21 Mini F55 F56 Top Hifi Harman Kardon Unit 9353990
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BMW X5 E70 3.0si 272HP N52N ECU Engine Control Unit Kit DME 7576297 Automatic
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Audi A1 8X Seat Leon Mk3 Cupra 5F Alternator Generator Petrol Engine 06J903023BX
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BMW G30 Fuel Pump Module Control Unit ECU 5A25FC9
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Mercedes-Benz E-Class W210 Battery Positive Plus Cable Loom Harness A2105401930
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Mercedes-Benz W168 A 170 CDI OM668.942 Engine Control Module A6681530879 Manual
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BMW 3 Series 1 E90 Radio Professional CD Player 65126971703 6971703
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BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 MID 9266411
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Mini R55 R56 R60 R61 Engine Starter Motor Mitsubishi 7645594
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Mercedes-Benz E S R Class W211 W221 W251 Replacement Fuse Kit A0005460373
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Volkswagen VW Passat B5 TDI Diesel Engine Starter Motor Actuator 068911024G
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CD Changer BMW E60 E61 E63 E64 Compact 6-disc Magazine 6938975
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Jaguar XF X250 Diesel Engine Starter Motor 12V DENSO 8X2311001AA
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Mercedes GLE W166 Wiring Harness Automatic Gearbox Cable Loom A1664403436
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Trunk Lid Module BMW F31 F15 F16 F36 Control Unit Rear Tailgate Lift 7343935
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Mini R58 R59 Wiring Set Loom Harness PDC Rear Bumper 9283673
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Audi A3 8P Front Seat Occupation Sensor Left Right N/O/S 8P4963553A
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Audi A4 B7 4.2 FSI V8 Petrol Engine Alternator Generator 079903018X
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BMW 3 5 7 Series E36 E38 E39 Key Transmitter Receiver Module Unit 8362337
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Mercedes W140 Head Unit Radio Player Control Module Becker A0038208286
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BMW E82 Amplifier Hifi Audio Speaker System 9164379
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Mercedes W251 R 350 CDI 642.950 224HP Engine Unit ECU Kit A6421508100 Key + Lock
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Audi A4 A5 A6 Q5 Q7 Radio Control Head Unit Harman Becker 4F0035061D
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Audi Q5 8R Door Module Front Left N/S Control Unit ECU Controller 8W1959592
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Mini Cooper One R50 R53 Fuse Relay Electrical Box Housing Without Cover 148079
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Peugeot 307 CD Player Radio Stereo Head Unit 96766518XT00
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Mercedes W140 Parking Control Unit Module Sensor A0205457832
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Mini One D R50 Diesel W17 88HP Engine ECU Kit DDE 7792544 + EWS + Keys Manual
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BMW X1 E84 E90 LCI 20dX 320xd N47 177HP ECU Kit DDE 8512498 CAS3 Key Manual
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Mercedes W211 Body Control Module BCM Comfort Module Unit A2115453532
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BMW 5 7 Series E39 E38 Saloon Aerial Radio Antenna Diversity Amplifier 8378090
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Mercedes W204 Display Screen Multifunction Navigation Dashboard A1729004004
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Audi A3 8V Module BCM Body Control Unit Module ECU 5Q0937084AA
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Peugeot Boxer Body Control Module Control Unit BCM Fuse Box 1371887080
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Land Rover Freelander 2 L359 2.2 Engine Alternator Generator 6G9N10300YC
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Audi A4 B8 2.0TDI CAHA 170HP Quattro Engine ECU Kit Ignition + 2 Key 03L906022RM
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Audi Q7 4L Quattro Diesel 3.0 TDI ALternator Generator 180A Bosch 059903018K
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Mercedes-Benz A-Class W176 Cover Equipment Electrical Fuse Box A2465403803
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Mini R56 LCI R60 Radio MINI CD Player Head Unit Controller 3456363
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Radio Player Mercedes W639 W906 Audio Stereo CD Head Unit Display A9068200486
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Audi A4 B8 A5 8T Body Control Comfort Unit Module BCM Unit ECU 8K0907063D
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BMW E87 LCI E90 120i 320i N43 170HP ECU Kit DME 7595179 CAS3 + Key Manual
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BMW Mini Cooper R57 R57N LCI 2 Cabrio Aerial Roof Antenna Base 9149080
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BMW 5 6 Series E60 M5 E61 LCI M5 E63 E64 M6 Speed Cluster Sensor 2282777
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Volkswagen Polo 6R Fuse Box Module Comfort BCM Body Control Unit ECU 6R0937087P
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Peugeot 3008 USB AUX Connector Interface Adapter Port Socket 96647952XT
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Mercedes W204 Fuse Box Relay Control Unit Electric Module SAM A2045454501
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Audi A1 8X Central Gateway Control Unit Module Relay Supply ECU 8X0907063R
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Battery Cable Mercedes W211 OM647 Starter Alternator Wiring Harness A2115401805
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Key components of vehicle electrical systems
Original electrical parts for popular car brands
A car's electrical system is a complex system responsible for many key functions—from engine starting to lighting and on-board electronics. Modern cars are equipped with increasingly advanced electrical solutions that not only improve driving comfort but also enhance safety. At the Global Parts automotive store you will find a wide range of used car parts , such as alternators, starters, batteries, control modules and other automotive electrical systems that perfectly fit BMW , Audi , Mercedes , Volkswagen , Mini and many others.
How does a car's electrical system work?
A car's electrical system is a complex system that consists of several key components that work together to ensure the vehicle's reliable operation:
- Battery accessories – Includes clamps, cables, holders and other components necessary for battery installation and maintenance.
- Electronic control modules and controllers – They control and manage the operation of various vehicle systems, such as the engine, air conditioning and ABS.
- Alternators and generators – Responsible for generating electricity and charging the battery while the engine is running.
- Parts for alternators and generators – Including voltage regulators, brushes and bearings that ensure proper operation of the alternator.
- Starters – Key components of the starting system that enable the engine to be started.
- Starter parts – Including bendixes, rotors and solenoids necessary for the proper operation of the starter.
- Batteries – They store the electrical energy necessary to start the engine and power on-board systems.
- Wires, harnesses and connectors – They transmit energy and electrical signals between various vehicle systems.
- Fuses and fuse boxes – Protect the electrical system against overloads and short circuits.
- Relays – They control the flow of current in individual electrical circuits of the vehicle. A functioning electrical system is the basis for the reliability of your car, regardless of operating conditions.
Key technical parameters of electrical systems
Each of these components has specific technical parameters that determine its compatibility with the vehicle. For example, alternators installed in mid-range cars (e.g., Volkswagen Passat B6) typically have a capacity of 90 A to 140 A, while luxury vehicles (e.g., Mercedes S-Class) require alternators with a capacity exceeding 180 A. Starter motors vary in torque and operating voltage – the standard is 12 V, while 24 V starters are used in heavy-duty vehicles.
Why is it worth taking care of your car's electrical system?
Regular maintenance and replacement of electrical system components is key to reliability and road safety. Faulty components can lead to:
- Problems starting the engine.
- Failure of safety systems such as ABS or airbags.
- Decreased efficiency of on-board equipment, e.g. lighting or air conditioning. At the Global Parts store we offer original used car parts , which have undergone detailed quality tests, ensuring their full functionality.
Symptoms of electrical system disruptions
In practice, electrical faults manifest themselves in a variety of ways. Drivers most often notice: dimming lights when parked, difficulty starting the engine, a voltage drop on the on-board computer, or air conditioning malfunctions. The table below presents typical correlations:
| Symptom | Possible cause | Item to check |
|---|---|---|
| Difficulty starting the engine | Worn out starter or battery | Starter motor, battery |
| Dimming the lights | Inefficient alternator | Alternator, voltage regulator |
| Electric windows not working | Damaged relays or harness | Relays, wires |
How to choose the right parts for your electrical system?
When choosing parts for the electrical system, such as alternators, starters or control modules, it is worth paying attention to:
- Vehicle-specific fit – Every car make and model requires specific specifications. At Global Parts, you'll find parts that perfectly fit BMW , Audi , Mercedes , Volkswagen , Mini, and many more .
- Technical condition – All used parts we offer are thoroughly checked to ensure their reliability.
- Technical parameters – For example, alternators should have appropriate current output, adapted to the needs of your vehicle.
Compatibility and fit
The selection of electrical parts is based primarily on OEM part numbers, but matching them to specific parameters is equally important, including current, voltage, and the number of connector pins. For example, the 120A alternator used in the Audi A4 B7 differs significantly from the 150A version installed in the Audi A6 C6 . Therefore, using manufacturer catalogs or providing the VIN makes finding the right component much easier.
Why choose used electrical parts?
Purchase of used car parts This solution allows you to combine savings with quality. Why choose it?
- Lower costs – Used alternators, starters and other parts are cheaper than new ones, but offer the same high quality.
- Ecology – You support recycling and reduce waste by choosing used car parts .
- Wide range – We offer electrical parts for the most popular car brands, so you can easily find what you need.
How to take care of your car's electrical system?
To ensure your electrical system operates reliably for years, it is worth remembering a few rules:
- Regularly check the battery condition and charge level.
- Take care of your cables and connectors – corrosion or damage can lead to voltage drops and failures.
- Monitor the operation of the alternator and starter – early detection of problems will help avoid more serious breakdowns. If you have any problems, you will find the right car parts at Global Parts that will help restore your vehicle to full working order.
Step-by-step control procedures
- Measure the battery voltage with a multimeter – the resting value should be approximately 12.6 V.
- Check the charging voltage with the engine running – the correct range is 13.8–14.5 V.
- Assess the condition of the wires and terminals – lack of corrosion and a firm seat are essential.
- If in doubt, check the quiescent current consumption – it should not exceed 0.05–0.08 A.
FAQ - Frequently asked questions about electrical systems in cars
| Question | Answer |
|---|---|
| What is a car electrical system? | This is a set of components responsible for powering and controlling all electrical functions in the car – from engine starting to multimedia. |
| What is an alternator for in a car? | The alternator generates electrical current when the engine is running and charges the battery. |
| What is the difference between a starter and an alternator? | The starter motor is used solely to start the engine, while the alternator is responsible for generating energy while driving. |
| How to check if the battery is working? | Just measure its voltage – a healthy battery should have approximately 12.6 V at rest and maintain a voltage above 10 V during cranking. |
| What are the most common symptoms of car electrical failure? | Problems starting the engine, flashing warning lights, power windows not working or dimming lights. |
| Do electrical parts from one model fit another? | Sometimes yes, but the key is to match it by VIN or OEM number – this guarantees compatibility. |
| How often should you check your electrical system? | It is worth performing basic diagnostics (battery, alternator) at least once a year or before a long trip. |
Summary: Automotive electrical systems at Global Parts Automotive Store
Automotive electrical systems are the foundation of the reliability and comfort of every modern vehicle. By choosing the right parts, such as alternators, batteries, and control modules, you can ensure your car's full operational efficiency. The Global Parts automotive store invites you to browse our wide selection of original used car parts . Whether you're looking for car parts for BMW , Audi , Volkswagen , Mercedes, Mini , or others, you'll find them at competitive prices. We strive to ensure every customer finds the right parts for their car, and if you have any questions or concerns about selecting the right components, we're happy to help! Please contact us – we're here to help! For more information and interesting facts, visit our automotive blog .