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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Audio Amplifier Mercedes W211 Audio Gateway Control Unit Module A2118702489
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Audi A5 8T Multimedia Radio Sat Nav Screen Display Head Unit 8R0919604A
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Front Seat Module BMW E60 E61 E65 E66 Control Unit ECU 6924879
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Ford Transit Connect Starter Motor Engine Actuator Diesel 1.8 2T14-11000-BA
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Renault Trafic III Vauxhall Vivaro B 1.6 dCi Engine Starter Motor 233000106R
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Comunication Module BMW E83 E46 EXCH Telematics Control GSM Bluetooth 6964113
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Audi A8 D4 Alternator Generator Electrical Unit 3.0 TDI Diesel Engine 059903019H
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Ford Transit MK8 Radio Head Unit Control Panel BK3T-18D815-BG
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BMW 3 Series E46 Radio Player Navigation Head Unit 6944696
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Mercedes CL203 CLC 350 M272.960 272HP Engine Module ECU Kit A2721531291 2 Keys
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Volkswagen Polo 6N Aerial Roof Antenna Base Antenna Unit 1J0035505A
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VW Volkswagen Golf MK5 Steering Wheel Column Control Module Unit 1K0953549F
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BMW E60 E61 CCC CD Professional Navigation Controller 6953773 SPARES OR REPAIR
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Alternator Volkswagen Transporter T5 2.0 TDI Diesel Engine 110A Bosch 06F903023L
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Volkswagen VW Golf 1K Mk5 Fuse Box Engine Compartment Relay Unit 1K0937124K
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Mercedes W169 PDC Parking Sensor Distance Control Module Unit ECU A1695455332
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BMW E60 E61 E63 E64 CAS2 ECU Control Unit Module 6943797 61356943797
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Mercedes W221 S350 M272.965 272HP Engine ECU Kit A2721536979 Ignition + Key
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STAG QBOX Basic LPG CNG 4-Cylinder Control Unit Module Injection Controller ECU
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Mercedes W205 Control Unit Power Distribution Box Electrical A0009060086
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Cable BMW E39 Petrol Engine M52 Alternator Starter Cable Wire B+ 7503505
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Mercedes W204 Rear Fuse Box Relay SAM Control Unit Module A2045458201
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BMW E87 E90 E91 118d 318d M47N2 Engine ECU Kit DDE CAS2 Key 7801710
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Audi A1 8X 1.4 TSI CAXA 122HP Engine Control Unit ECU Kit 03C906016BG BCM + Key
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Parking Sensor Wiring Mercedes W177 W247 Rear Bumper PDC Loom Cable A1775405710
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MINI Cooper One R50 Control Unit For Radio Remote Control 433MHZ 4109140
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BMW 3 Series E36 Electrical Fuse Relay Box Cover Panel Trim 1387613
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@Starter Motor Mercedes W203 W210 W211 Diesel Engine Actuator MAWS38371
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Porsche Cayenne 92A Front Side Door Crash Sensor Left Right N/O/S 7P0959354
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Alternator BMW G20 G30 G14 B47 B48 B58 B46 Alternator 180A 14V 8634166
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Starter Motor Land Rover Freelander 2 Diesel Engine Actuator LR003468
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BMW 1 Series E87 ECU Body Control Module Unit KL PL2RR JBBFE 61359264579 9264579
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Audi Q3 8U 2.0 TDI Fuel Pump Sender Control Relay Module Unit ECU 5Q0906121F
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Mercedes W176 W245 Front Left N/S Door Wiring Loom Harness A2465403805
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BMW 1 Series E87 ECU Body Control Module Junction Box H2 6962284
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Audi A3 8V 2.0 TFSI DJHA Starter Motor 12V 02E911024M
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Audi Seat Skoda Volkswagen 1.4 TSI Petrol Alternator Generator Valeo 04E903023K
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Starter BMW E60 Starter Motor Bosch 7515391 0001108401
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BMW E81 E82 E84 E87 E89 E90 E91 E92 Radio Business CD 9259730
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Engine Wiring Renault Trafic 2 Loom Module Harness Cable 275850906R
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Mercedes W221 Anti Theft Roof Alarm Ultrasonic Motion Sensor Unit A2218207510
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BMW 5 6 E61 Touring E63 Coupe Panoramic Sliding Sunroof CAN Bus Control Unit
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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 .