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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Mercedes CLA C117 Head Unit Sat Nav Navigation Display Screen UB2305000334
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Audi S3 8P Audio Sound BOSE Amplifier Stereo System Module 8P4035223D
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Alternator Ford Transit MK2 Sierra Scorpio 2.0 Engine Generator 1406067
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Relay Mercedes W166 Voltage Dip Protection Start/Stop Relay Module A0009820123
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Transmission Module Mercedes C117 AMG Petrol OM133 Gearbox Control A0009002010
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BMW E60 E90 E91 325i 525i N52 218HP Engine ECU Kit DME 7559178 CAS2 + Key Manual
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Mercedes W164 Front Fuse Box SAM Relay Control Unit Module A1645402401
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BMW E60 E90 E91 N52 325i 525i 218HP Engine Control Unit ECU DME 7553166 Manual
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BMW X1 E84 2.0dX N47 177HP Engine ECU Kit DDE 8510591 CAS3 + Key Manual
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BMW 3 Series E93 Convertible Cabrio Wiring Loom Set PDC Rear Bumper Set
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Earth Ground Cable Mercedes Sprinter W901 Battery Wiring Loom Engine A9015400631
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BMW E81 E82 E83 E84 E85 E87 E90 Petrol Denso Starter Motor 7524843
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BMW F20 F21 114i N13 Engine ECU DME Kit FEM + Key 8614302 Manual Gearbox
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BMW E87 E90 Navigation System Professional CCC Navi Controller 6987692
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Mini Cooper R56 LCI R58 N16 1.6 122HP Engine ECU Kit DME 8617050 CAS 3 + Key
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Audi A8 D4 BCM Module Body Control Unit Convenience ECU 4H0907064FB
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Audi A3 8P Body Control Comfort Unit Module BCM Unit 8P0907279C
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Starter Motor Mercedes W213 C238 C253 M274 Petrol Engine Actuator Denso DSN1205
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BMW F23 REM Rear Electronic Module Fuse Box Control Unit V2 9374507
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Ford Mondeo MK4 Negative Battery Terminal Cable Wiring Connecting 6G9T14301BK
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Mercedes-Benz W208 Fuse Box Relay Control Unit Electric Module SAM A2085450132
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Audi A3 8L TT 8N Battery Cable Positive Wire Lead Terminal 1J0971228AE
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BMW F10 F11 On-Board Screen Central Information Display Monitor 10,25" 9266385
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Mercedes-Benz C-Class W203 1 CD Player Audio Stereo Radio Head Unit A2038201786
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Mercedes Sprinter W907 Battery Power Distributor Current Limiter A9079060100
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Telematics Module BMW F20 F21 Bluetooth Teleservices GPS Control Unit 2622605
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Radio Tape Player Jaguar XJR XJ6 X300 Audio Control Unit Cassette AJ9500R
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Airbag Module Mercedes C118 W177 W247 Front Air Bag Control Unit ECU A1779006604
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Renault Master II Trafic II 2.5 dCi Engine Starter Motor Elstock 8200634602
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Seat Module Mercedes X164 Rear Third Row Seats Control Module A1648703726
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BMW F20 F21 LCI Mini F55 F56 Top Hifi Audio Amplifier Harman Kardon 2622869
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Alternator Volkswagen VW Sharan 2.0 TDI Engine Alternator 180A Bosch 03L903024F
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Chip Power Box Remap Module Control Unit Wiring Cable Harness Plug OBD2
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Audi A4 B9 BCM Body Control Module Unit ECU 8W0907064CB
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Amplifier BMW F30 F31 F32 Top Hifi Audio Sound Amplifier Harman Kardon 9366164
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BMW 3 Series E90 E91 E92 E93 Positive Battery Lead Distribution Box Cable Rear
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Mercedes Sprinter W906 Door Module Front Right O/S Control Module A9069006100
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Audi A3 8V 1.4 TFSI Petrol Starter Motor Engine Actuator Unit 0AM911023N
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Mini R50 R52 R53 Positive Battery Terminal Cover Cap Red 8385236
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Mini Cooper One R55 R56 R57 LCI R60 Radio Boost CD Player Unit Head 3456600
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BMW E53 4.4i M62 286HP Engine ECU Kit DME 7508698 + EWS3 + Key Automatic
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BMW F45 X1 F48 Mini Cooper F55 F56 F60 Diesel Engine Starter Motor 8581788
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Volkswagen VW Polo 9N Negative Battery Terminal Ground Cable Wiring 6Q0971235
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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 .