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 A3 8P CD Player Radio Stereo Head Unit 8P0035195P
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Audi TT 8J BCM Body Comfort Convenience Module Unit ECU 8J0959433B
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Audi A5 8T Multimedia Radio Sat Nav Screen Display Head Unit 8R0919604
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Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907064CC
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Audi A3 8P Stereo Radio Audio CD Player Head Unit 8P0035152E
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Audi A1 8X BCM Body Control Module Power Supply Unit 8X0907063AB
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Audi A3 8V Air Module Control Sensor SRS System ECU Unit 5Q0959655BT
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Audi A4 B9 Air Module System Control Sensor ECU Unit 8W0959655P
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Audi S7 4G8 Front Lamp Headlight Level Sensor 3C0907503
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Audi Q5 8R Sat Navi Stereo Radio Audio MMI Head Unit CD Player 8T2035666F
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Audi A5 8F Convertible Folding Roof Module Control Unit 8F0959255
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Body Control Module Audi A4 B8 A5 8T BCM Comfort Control Unit 8K0907064DC
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Audi A3 8V Headlight Range Cornering Adjustment Control Module 8V0907357A
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Audi Q7 4L Air Suspension Adjustment Module Control Unit ECU 4L0907553
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Audi S3 8P Body Control Comfort Unit Module BCM Convenience Unit 8P0959433C
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Audi Q7 4L Sensor ABS Wiring Harness Cable Rear 7L0971279G
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Audi A6 C7 BCM Body Comfort Convenience Module Unit ECU 4H0907064CN
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Audi VW Volkswagen Seat Relay Unit Module 9 Pins 12V UH2 4B0955531A
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Audi A6 C6 Door Module Front Driver's Side Control Unit ECU 4F0959793R
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Audi Q5 FY Front Door Control Module Unit Right O/S Side 8W1959593
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Audi A3 S3 8P Engine Bay SAM Relay Fuse Box Module Control Unit ECU 1K0937124P
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Audi A1 8X Central Gateway Control Unit Module Relay Supply ECU 8X0907063R
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Audi A5 8T Harman Multimedia Sat Navi Radio CD Player Head Unit 8R2035666L
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Audi A3 8V Door Module Control Unit Front Driver Side 5Q0959593K
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Audi A3 S3 8V 3D Door Wiring Harness Loom Cable Driver's Side 8V3971035A
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Parking Brake Module Audi A6 C7 A7 4G A8 4H Handbrake Control Unit 4H0907801H
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Audi A5 8T Radio Stereo Head Unit Control Switch Unit Audio Controller 4F0035061
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Audi A5 S5 8T PDC Parking Distance Assist Sensor Module Control Unit 8K0919475G
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Audi A3 8V Air Module Control Unit SRS System ECU 5Q0959655AR
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Audi A5 8T Onboard Comfort Supply BCM Control Module Unit ECU 8K0907063DD
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Audi A3 8V BCM Body Control Module Unit ECU 5Q0937084CF
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Audi A3 8P Door Harness Loom Cable Wiring Rear Right O/S 8E0971687L
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CD Player Audio Audi A4 B8 A5 8T Stereo Radio Head Unit 8T2035195AA
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Audi A3 8V Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273P
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Audi A4 B7 Cabrio Folding Top Roof ECU Module Control Unit 8H0959255A
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Audi A5 8F Starter Alternator Wiring Loom Harness 8K2971228H
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Audi Q2 GA Head Unit Navigation Multimedia Control Unit MMI 81A035043
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Audi A6 C7 A7 4G Dashboard Screen Head Unit Dash Multimedia Monitor 4G0919607H
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Audi A5 8T Body Control Comfort Unit Module BCM Convenience Unit ECU 8K0907064JE
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Audi A3 8P Door Wiring Loom Cable Harness Front Driver's Side 8P3971036N
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Gateway Module Audi A3 8P Volkswagen Tiguan Central Control Unit ECU 7N0907530J
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VW Golf Audi A3 8P 2.0 TDI Diesel Engine Starter Motor 02M911024G
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Audi A1 8X Multimedia Radio CD Player Navigation Head Unit 8X0035183F
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Audi A6 C6 Display Screen Multimedia Navigation Dashboard Unit 4F0919603B
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Audi A4 B8 A5 8T Body Control Comfort Unit Module Unit ECU 8K0907063M
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Audi A5 F5 Front Windscreen Windshield Lane Assist Camera 8W6907217A
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Audi TT 8J Driver's Side Door Card Wiring Loom Harness Cable 8J0971035H
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Audi A4 B9 Power Distribution Fuse Box Battery 8W0941823F
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Audi A6 C6 Display Screen Multimedia Navigation Dashboard Unit 4F0919603B
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Audi TT FV A3 8V Door Module Control Unit Front Right O/S Side ECU 5Q0959593D
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Audi A3 8V Multimedia Radio Sat Nav CD Player Head Unit 8V0035874C
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Audi Q3 8U Headlight Module LED Headlamp Control Unit 8U0998572A
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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 .