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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Audi A8 D4 4H Relay Fuse Bracket Holder Junction Box 4H0907348C
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BMW 1 3 Series E87 E90 E91 118d 318d M47N2 Engine ECU KIT DDE 7798179 CAS2 + Key
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Mercedes W204 C180 Kompressor 271.952 156HP Engine Control Unit ECU A2711504879
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Radio Head Unit BMW E93 Comand CD DVD Player Changer 9218331
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Engine Starter Motor BMW X5 E70 LCI F01 N57 Diesel Starter Actuator 8515900
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On-Board Screen BMW F10 F11 Central Information Display Monitor 10,25" 9266385
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Audi A4 B7 Cabrio Aerial Antenna Amplifier Module Unit Left N/S 8H0035225J
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Ford Transit Custom Radio Remote Control Receiver BK2T15K602AA
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SAM Module Mercedes W204 Control Unit Electrical Fuse Box Unit A2045457001
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Radio Comand Mercedes W176 W246 Navigation Head Unit CD Infotainment A2469004819
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Mini Cooper R56 LCI High SPEG PL3 H4 Fuse Distribution Box 3455439
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BMW 7 Series E65 E66 Driver Seat Airbag Sensor Control Unit Module 6946107
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Mini Cooper R55 R56 R57 R58 Wiring Heated Seat Loom 2753025
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Ford Transit Mk7 Fuse Box Loom Wiring Harness Cable 6C1T-9K499-NH
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Mini R52 Roof Module Cabrio Convertible Folding Top 6972651
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Mercedes C253 W293 Rain And Light Sensor Control Unit Module ECU A2539009309
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Air Module Mercedes W213 C238 C253 Control Unit ECU A2139008828
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Volkswagen Polo 6C 1.4 TDI CR 75HP CUSA Engine Control Unit ECU 04B907445 Manual
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Mercedes W221 Bluetooth Hands-free Mobile Phone Adapter A2218201811
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Mini Cooper One F55 Door Cable Wiring Loom Harness 6809539
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BMW F20 F30 F80 F82 F87 Body Control Comfort Module Unit FEM ECU 8707674
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Mercedes W906 Positive Battery Cable Wiring Loom Harness A9064408234
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BMW 3 Series F30 F80 M3 Battery Cover Trunk Trim Panel Right Boot 7239175
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BMW F40 Parking Control Module Unit USS ECU LOW 9873546
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Mini F55 F56 Central Cover Information Instrument Radio 8,8" 9367675
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BMW X3 E83 3.0d M57N2 218HP ECU Control Unit DME 7801217 Manual
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BMW X1 F30 F31 LCI Starter Motor Engine 8612576
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BMW X1 E84 Basis TFL Footwell Light Module Control Unit ECU FRM3R PL2 9340333
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Volkswagen VW Caddy Radio Remote Control Alarm Key Fob Control Unit Module
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Mercedes W140 Seat Memory Control Unit Module Front Left N/S A1408201426
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Mercedes R171 W203 W211 Phone Adapter Contact Plate Holder Telephone A2038201411
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BMW E90 E91 E92 E93 325i N53 218HP ECU Kit Control Unit DME 7576719 Automatic
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Mercedes W169 W245 CD Player Radio Stereo Head Unit A1698700689
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BMW X5 Series E53 Fuse Box Label Trim Cover Panel Sticker 6937668
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BMW F01 Fotwell Compartment Module Light Control Unit FRM III Temic 9232178
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Mercedes SLK R171 Front Fuse Box SAM Relay Control Unit Module A1715450901
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Renault Master II Trafic II 2.5 dCi Engine Starter Motor Elstock 8200634602
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Radio Head Unit Mercedes W212 COMAND Navi CD DVD Player Control Unit A2129068800
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Alternator Belt Tensioner Mercedes W169 W245 OM640 Diesel Holder Mounting Panel
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Fuse Box Mercedes W211 Rear Trunk Module Relay Fuse Box SAM A2115455301
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Relay Mercedes W124 E280 Fuse Box Light Control Relay A1265420332
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Fuse Box Holder BMW X5 F15 X6 F16 Control Unit Module Bracket Carrier 9265835
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Mercedes W213 OM654 Battery Cable Starter Alternator Wiring Harness A2385406926
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Ford Transit Fuse Box Cover Housing Lid Trim Cap 6C1T14A076C
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Parking Module Mercedes W169 W245 PDC Distance Control Unit Sensor A1695400762
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Mercedes W204 C350 276.957 306HP BE Engine Module ECU A2769001500 Automatic
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BMW 7 Series E65 E66 Control Unit Door Rear Passenger Side 6933268
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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 .