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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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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Ford Transit MK6 2.4 Diesel Engine Alternator Generator 4461712
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Alternator Mercedes W212 S212 Diesel OM651 Alternator 220A Valeo A0009063705
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Door Harness Mercedes W205 Rear Left N/S Door Wiring Loom A2055409750
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Mercedes W213 OM654 Battery Cable Starter Alternator Wiring Harness A2385406926
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Skoda Octavia 5E Front Door Module Control Unit ECU Driver's Side 5Q4959393E
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VW Phaeton 3D Electrical Steering Column Wiring Harness Loom Cable 3D0972072AG
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Audi A4 B7 Body Comfort Control BCM Supply Module Unit ECU 8E0959433CA
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Mercedes W207 W212 Tuner Box Digital Satellite Radio Control Unit A2229009211
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Ford Transit Fuse Box Cover Housing Lid Trim Cap 6C1T14A076C
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Ford Transit Mk7 Negative Battery Terminal Sensor Unit BK2T14301AC
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VW Volkswagen Touran 1T Golf Mk7 Fuel Pump Control Unit Module 1T0906093G
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Audi S8 D3 Fuel Tank Flap Actuator Motor Electric Linkage 4E0862150
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Ford Transit Custom Mk8 Bluetooth Module Unit Control ECU NB5T-14G087-HD
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Volkswagen Polo 6R Engine Starter Motor Assembly Unit 0AM911023F
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BMW E90 E91 LCI N47N 320d 184HP Engine Control ECU Kit DDE 8518269 + CAS3 + Keys
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BMW X5 Series E53 Fuse Box Label Trim Cover Panel Sticker 6902105
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Audi A3 8V VW Golf 5G R 5G Door Control Unit Passenger Front Left N/S 5Q0959592A
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BMW 5 6 Series E60 E61 E63 E64 Carrier Plate Bracket Mount Module Unit 6949723
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Mercedes-Benz C E W202 W210 Front Right Door O/S Control Module A2108207626
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Audi A6 C7 Ignition Smart Key Fob Lock Remote Alarm Button Control 4G0959754K
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Relay Mercedes W124 Indicators Wipers Hazard Lights Relay A2018210047
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Relay Mercedes E200 S124 Petrol M111 Overload Protection Relay A2015403245
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Volkswagen Polo Mk5 Alternator Generator 140A Diesel Engine 04B903023D
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Skoda Octavia 5E Front Door Module Control Unit ECU Passenger Side 5Q4959392E
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Porsche Cayenne 9PA Body Gateway Module ECU Control Unit 7L5907530D
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Seat Leon 1P Body Control Comfort Unit Module BCM 5K0937086K
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Mercedes R172 Cable Beam Engine Wiring Harness Loom A1725400533
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Mercedes CLA C118 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1185405713
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BMW E88 ECU Body Control Module H4 Junction Box PL2RR JBBFE IIIR 9270385
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Porsche Cayenne 9PA Windscreen Washer Wiring Loom Cable 7L0971767A
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BMW X3 F25 Alternator Generator 210A 28iX N52N 7591268
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BMW F10 F20 F21 F22 F30 F31 Combox Telematics Bluetooth GPS Module Unit 9257152
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Alternator Generator Mercedes W203 W209 M271 Engine Valeo 120A 14V A2711540902
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BMW F20 F21 M135i N55 326HP Petrol Engine Control Unit ECU DME 8626472 Automatic
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Ford B-Max Fiesta Mk7 Crash Impact Sensor Air Module Control Unit BK2T-14B006-AC
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Range Rover Evoque L538 Headlight Control Module Unit BJ32-13K031-AC
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Mercedes W205 W213 X253 Electrical Wiring Harness Cable A2055408117
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Mercedes W203 W210 W211 Starter Motor Diesel Engine Remy A0051511301
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Audi S5 8T RS5 Door Wire Wiring Cable Loom Harness Front Passenger 8T0971030AG
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Mercedes-Benz E-Class W210 Battery Positive Plus Cable Loom Harness A2105400230
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Ford Transit Connect Rear Door Wiring Cable Harness Loom FT1T14027LLC
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Mini R60 Amplifier Control Unit HiFi Audio Harman Kardon R57 R58 R61 9239605
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Mercedes W164 W251 Air Suspension Level Control Unit Module Airmatic A2515454132
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Peugeot Boxer Citroen Relay Engine Starter Motor Diesel Valeo 9646972280
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Audi Q7 4M Starter Motor Engine Diesel Valeo 06M911022D
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Volkswagen Golf 5 2.0 TDI Engine Control Unit ECU Manual 03G906016HJ
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Alternator Belt Tensioner Mercedes W169 W245 OM640 Diesel Holder Mounting Panel
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Volkswagen VW Golf Mk7 Front Radar Distance Control Unit Module 3QF907561D
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Mercedes X218 CLS 350CDI OM642.853 Engine Control Unit ECU Kit A6421508900 Key
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Ford B-Max Battery Negative Lead Terminal Cable Loom Harness CV2T-10C679-BC
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BMW E81 E87 LCI E90 116i 316i N45N ECU Kit DME CAS3 + Keys 7581848 Manual
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Ford Transit Mk7 Handbrake Wiring Cable Battery Wire Cabling 6C1T-14K076-CC
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Audi A3 8P VW Golf Mk6 Positive Battery Terminal Cable Wire Lead 1K0971228AB
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Volkswagen Touareg 7L Alternator Mounting Bracket Carrier Holder 070903143C
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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 .