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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BMW F20 F21 114d N47N 95HP Engine Control Unit DDE 8577625 ECU Kit FEM Key Lock
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BMW 7 Series E65 Cable Door Rear Left N/S Wiring Harness 6923711 6934038
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Audi A4 B9 Rear Bumper PDC Parking Sensor Harness Wiring Loom Cable 8W9971104M
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ECU Mercedes X164 Diesel OM629.912 Engine Control Module 306 HP Automatic
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Audi A5 8T Seat Cable Front Left Right N/O/S Wiring Loom Harness 8T0971365C
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Mercedes W163 Air Module System Control Unit Module ECU A1635422918
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Mercedes V177 Automatic Gearbox Control Unit Module ECU A0009004523
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Mercedes W245 B180 CDI 640.940 Engine Control Unit ECU A6409004600 Automatic
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Audi Q5 8R Air Module SRS System Control Sensor ECU Unit 8R0959655E
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Mercedes-Benz E-Class W210 Positive Plus Cable Wiring Cover Cap A2105451303
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Audi A3 8P 1.6 TDI 105HP CAYC Diesel Engine ECU Kit 03L906023M 2 Keys Manual
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Mercedes-Benz C-Class W204 Battery Negative Earth Cable Wiring A2049820202
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Audi A1 8X Negative Battery Terminal Cable Wiring 8K0915181N
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Battery Cable BMW G01 G02 B47B B47D Alternator Base B+ Lead 8589158
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Mini Cooper R56 Petrol Engine Installation Wiring Loom Harness 8678967
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Audi RS3 8V 2.5 TFSI Alternator 14V 180A 07K903023J
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Head Unit BMW F01 F10 F20 F30 Navigation Sat Nav High Control Module 9223395
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Mercedes SLK R172 W212 Rear Fuse Box SAM Relay Control Unit Module A2129004830
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BMW 6 Series E63 E63N LCI Centre Console Switch Centre DTC PDC 9169123
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Seat Ibiza Mk5 Air Module Control Unit 5QF959655BT
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Audi TT 8J Alternator Main Cable Wiring Harness Loom 8J0971349A
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Audi A3 8P Gateway Control Unit Module ECU 8P0907530B
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Mini R55 R56 Cooper S EGS Module Automatic Gearbox ECU Control Unit 7598857
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Vauxhall Opel Astra G Fuse Box Covering Trim Panel Lid Housing 90589541
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Mercedes Vito W639 OM646.980 111 CDI 116HP Engine ECU Module A6461500400 Manual
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Mercedes W221 SAM Relay Fuse Box Module Control Unit ECU A2165450632
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BMW E46 320d Diesel Engine M47N 150HP ECU Kit DDE 7791190 EWS3 + Key Automatic
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Alternator BMW E60 E61 E87 E90 E91 N52 Generator 155A Bosch LRA02970
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Mercedes W907 DSM ISM Gearbox Control Unit Module Cloning Coding A0002704652
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Seat Leon Mk3 Door Module Control Unit Front Driver's Side Door 5Q4959593E
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Mercedes W177 W247 Safety Module Air Module SRS Control Unit ECU A1779002510
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Volkswagen Touran Engine Starter Motor 02M911023N
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Mini Countryman F60 Audio Amplifier Hifi Unit Active Sound Design System 5A4E600
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Audi A6 C7 Front Door Control Module Unit ECU Driver's Side 4G8959793E
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Mini F55 F56 Cooper D B37 Diesel Engine ECU Kit DDE 8582719 BDC + Key Automatic
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Mercedes Vito W639 111 CDI 646.982 109HP Engine ECU Kit A6461532891 Key Lock
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Mercedes W164 Battery Starter Alternator Wiring Harness Cable OM642 A1645401730
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Seat Ibiza V KJ1 Keyless Entry Amplifier Aerial Antenna Module Inner 5K0962132B
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Mercedes C140 Fuse Box Relay Cover Lid Control Unit Bracket Trim A1405400282
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Mercedes W211 Door Module Rear Left N/S Control Unit ECU A2118703385
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BMW X5 E53 3.0i M54 231HP ECU Kit DME 7519308 Manual + EWS3 + Key
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Audi A5 8T Onboard Comfort Supply Control Module Unit ECU 8K0907063AC
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Positive Cable Vauxhall Insignia Battery Starter Alternator Plus 13295310
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BMW Z4 E89 23i N52N 204HP sDrive Engine ECU Kit CAS3 + Key 7624048 Manual
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Ford Galaxy Mondeo MK4 2.0 TDCi Alternator Bracket Mount Support 4M5Q-10239-CC
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Ford Transit Connect Earth Ground Cable Battery Lead Wiring Loom FV6T14324BFA
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Mercedes W211 E220 CDI 646.821 170HP Engine Unit ECU Kit A6461503272 Key Lock
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Audi A4 S4 B8 Body Control Comfort Unit Module BCM2 Unit ECU 8K0907064FF
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Mini Cooper D R55 R56 Diesel W16 109HP ECU Kit DDE 7823934 CAS3 Key Automatic
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Mercedes Citan W415 Alternator Generator OM607 Diesel Engine 150A 14V 231000026R
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BMW E46 Coupe Convertible Front Door Cable Harness Driver's Side Wiring 6903094
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Airbag Module Peugeot 307 Control Unit ECU Car Safety Sensor 9650109480
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Peugeot 3008 Head-Up Display Hud Project Dash Screen Control Unit 96665877ZD
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Jaguar XF 250 Power Adapter Battery Positive Terminal 7W93-11A134-AA
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Mercedes W204 C180 M271.820 BE 156HP Engine ECU Kit A2711500391 Key + Lock
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BMW 1 F20 F21 LCI 116d B37 Engine Gearbox Module Wiring Cable Loom 8586574
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Audi A6 C6 Antenna Amplifier Control Unit Module ECU 4F9035225H
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Starter Ford Mondeo MK3 2.0 TDDi Mk4 2.0 Tdci Diesel Engine Starter Motor
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Mercedes ML W164 Lumbar Module Front Seat Lumbar Control Unit A1649100075
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Mazda 6 GJ Relay 4-Pin Electrical Unit Multi-Purpose Relay Black ACVN51212
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Mercedes R172 BlueEFFICIENCY 271.861 184HP Engine ECU Kit A2711500391 Key Lock
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BMW F40 F44 Rear Seat Bench Occupancy Mat Control Unit Sensor 7948147
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VW Polo Mk6 Seat Ibiza Mk5 Central Gateway Control Unit Relay ECU 3Q0907530BF
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Skoda Octavia 1Z Audi A3 8P Alternator Wiring Harness Loom Cable 1K0971349CR
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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 .