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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Vw Golf 5 Audi A3 8P Seat Leon 1P1 Fuse Box Cover Trim Panel Housing 1K0937132F
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Volkswagen Golf Mk6 Alternator Generator Electrical Unit Valeo 03L903023F
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Volkswagen Golf Mk7 5G Alternator Generator 2.0 TFSI CHHA 06J903023H
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VW Volkswagen New Beetle 1.9 TDI BSW Diesel Alternator Generator 038903024F
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Volkswagen Touareg 7L Control Comfort Unit Module Unit ECU 7L6959933
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Volkswagen Golf Mk7 BCM Convenience Body Control Module Unit ECU 5Q0937084CL
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Volkswagen Touareg 7L Alternator Mounting Bracket Carrier Holder 070903143C
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Volkswagen Golf Sportsvan Fuse Box Engine Compartment Relay Unit 5Q0937125B
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VW Volkswagen Golf SV Gateway Control Unit Module ECU GW MQB High 3Q0907530L
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VW Volkswagen Golf Sportsvan Multimedia Sat Nav Radio Display Screen 5G6919605B
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VW Volkswagen Golf 1K 5D Front Door Wiring Loom Harness Left N/S 1K0971121CN
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VW Golf 5 V 1K Fuse Box Control Unit Relay Power Distribution Module 1K2941824
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Volkswagen New Beetle Air Module Control Unit Sensor ECU 6Q0909605AL
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VW Volkswagen New Beetle Fan Control Module Relay 1J0919506K
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VW Caddy 1.9 TDI BLS 105HP Engine Control Unit Module ECU 03G906021PD Manual
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VW Volkswagen Polo 9N 1.4 TDI Alternator Bracket Mount Carrier 045903143E
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Audi Seat Skoda Volkswagen 1.4 TSI Petrol Alternator Generator 110A 03C903023G
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Volkswagen Golf Mk7 Air Module Control Unit ECU 5Q0959655M
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Volkswagen Golf Mk7 Gateway Control Unit Module 5Q0907530AA
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Volkswagen Golf 7 Audi A1 A3 Seat Ibiza Petrol Engine Starter Motor 02M911024J
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Volkswagen Golf 7 1.6 TDI CLHA 105HP Engine ECU Kit 04L907309B Key + Ignition
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Battery Cable VW Golf 8 Audi A3 8Y Starter Alternator Wiring Harness 5WA971230CM
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Volkswagen Golf Mk7 Gateway Control Unit Module 5Q0907530L
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VW Volkswagen Golf Mk7 Radio Control Head Unit CD Player 5G0919605
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Volkswagen Golf Mk7 Infotainment Multimedia Head Unit 5G0035820A
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Volkswagen Golf Mk7 BCM Body Control Module Unit ECU 5Q0937084S
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Volkswagen VW Touran 1T Alternator Main Cable Wiring Harness Loom 1K0971349EM
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Volkswagen Golf Mk4 Alternator Generator BOSCH 14V 70A 028903028C
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Volkswagen Sharan 7N Fuse Box Module Comfort BCM Control Unit ECU 5K0937084J
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Volkswagen Touran 1T Air Module Control Unit ECU Module 1T0909605E
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Volkswagen Fox 5Z Stereo Radio CD Player MP3 Head Unit 5Z0035152E
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Alternator Audi A6 C6 3.0 TDI Diesel Engine Generator 059903015R 1068673
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Volkswagen Golf CD1 Tailgate Trunk Lid Wiring Harness Rubber Cover 5G6971829B
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Volkswagen VW Passat B7 Driver's Seat Control Unit Module ECU 3C8959760E
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Volkswagen Passat B7 PDC Parking Assistant Module Control Unit 3AA919475N
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Volkswagen Passat B7 CAXA 122HP ECU Engine Control Unit Automatic 03C907309E
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Volkswagen Passat B7 Central Gateway Control Unit Module Relay ECU 7N0907530AN
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Volkswagen Fox 5Z Air Module Control Unit ECU Module 1C0909605K
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Volkswagen Golf 5 1K 2.0 TDI BMN 170HP Engine ECU Kit 03G906018FC 2 Key Ignition
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VW Volkswagen Golf Mk5 V 1K Air Module Control Unit ECU 1K0909605T
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VW Volkswagen Golf 1K Steering Wheel Sensor Control Module Unit ECU 1K0953549BC
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Volkswagen Golf 5 GTI 1K 2.0 TFSI 200HP Engine Ecu Kit 1K0907115F Key Ignition
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VW Golf Mk5 1K Body Control Comfort Unit Module Convenience Unit 1K0959433AK
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Volkswagen VW Golf 1K Mk5 Fuse Box Engine Compartment Relay Unit 1K0937124K
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Volkswagen VW Golf Mk5 Steering Wheel Position Angle Control Unit 1K0953549BK
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Alternator Volkswagen Transporter T5 2.0 TDI Diesel Engine 110A Bosch 06F903023L
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Alternator Volkswagen VW Sharan 2.0 TDI Engine Alternator 180A Bosch 03L903024F
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Volkswagen Polo 6R Engine Wiring Loom Harness 03E971612AD
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Volkswagen Polo Mk5 6R 1.2 CGPB Engine Wiring Harness Cable 03E971612AN
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Seat Ibiza Skoda Fabia Volkswagen Polo Mk5 6R 1.2 Petrol Alternator 03D903025J
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Volkswagen New Beetle Earth Ground Cable Negative Battery Lead Wiring 1C0971235A
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Volkswagen Tiguan 5N Engine Starter Motor 02M911024C
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Volkswagen Tiguan 5N Air Module Control Unit ECU Module 5N0959655A
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VW Volkswagen Tiguan 2.0 TDI CFFB 140HP Engine Control Unit ECU 03L907309AE
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Sunroof Wiring Volkswagen VW Tiguan 5N Roof Motor Cable Harness 5N0971100R
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Volkswagen Tiguan 5N Sat Navi Stereo Radio Audio Head Unit CD Player 2K0035279C
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Audi A3 Q3 Volkswagen Golf 1.5 TSI Alternator Negative Cable Ground 5WA971244C
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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 .