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 E60 E90 X5 E70 3.0sd 335d 535d M57N2 Engine ECU DDE 7805287 Automatic
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Mercedes W213 Front Left N/S Door Electrical Wiring Harness A2135407144
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Front Fuse Box Mercedes W204 S204 Relay Control Unit SAM Module A2129006824
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Audi A4 B7 Radio Player Head Unit CD Stereo Concert 8E0057186DX
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Audi TT 8J Body Control Comfort Unit Module BCM Unit 8J0959433
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BMW X5 E53 3.0i Petrol M54 Alternator Valeo 140A 7551252
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Audi A7 S7 4G 4.0 TFSI Petrol Engine Alternator Generator 079903015P
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Body Control Module BMW X5 E70 ECU Junction Box LOW PL4 JBBFEII 2 9138471
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Mini Cooper One R56 Footwell Light Module High EKS ECU PL3 FRM3R 6827072
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Engine Wiring Harness Mercedes W204 M271.820 Petrol Loom Cable A2711508833
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Volkswagen Golf MK6 Parking Sensor Wiring Rear Bumper Loom Cable 03L972619BA
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BMW X1 E84 20d 20dX Diesel N47N Engine Control Unit ECU Kit DDE 8574352 CAS3 Key
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Vauxhall Corsa D 1.3 CDTi Alternator Generator Electrical Unit 101210-0961
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Seat Ibiza Fuse Box Relay Carrier Holder Bracket Mount Tray 6R0915345E
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Audi A3 8V Module BCM Body Control Unit Module ECU 5Q0937084AA
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BMW E90 E90N E91 E91N LCI Wiring Loom Set PDC Rear Set Complete
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Audi Q7 4L Door Control Module Unit ECU Rear Left Right N/O/S 8K0959795B
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Volvo V70 2.4 D5244T4 Diesel Engine Control Module ECU 30729826A Automatic
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BMW F46 218i B38 136HP Engine Control Unit ECU Kit DME 8674260 FEM + Key Manual
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BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9293309
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VW Volkswagen Polo Mk5 6R Radio Multimedia Display Navigation Unit 6C0919603A
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Fuse Box Mini R55 R56 R58 1 Electrical System Distribution 9213372
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Mercedes W221 Fuse Box SAM Module Control Unit Module ECU A2215403862
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BMW F10 F11 520d Diesel N47N 184HP Engine ECU Kit DDE 8513250 CAS 4 + Key Manual
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Audi A3 8V Gateway Control Module Unit ECU 5Q0907530S
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Audi S3 8Y Diagnostic Interface Data Bus Gateway Control Unit 5QS907530A
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BMW F01 F02 F03 LCI F06 F10 F13 Antenna Amplifier Diversity 868 MHZ 9346806
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Mercedes Sprinter W906 OM651.955 163HP Engine Unit Module ECU A6519003403 Manual
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Mini One R50 W10 90HP Engine Control Unit ECU Kit DME 7545789 + EWS + Key Manual
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Mercedes W204 C220CDI BlueEFFICIENCY OM651.911 Engine ECU Kit A6519007500 Key
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Citroen C5 Negative Battery Terminal Cable Eatrh Cable Wiring Lead 9800590280
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Alpine CHM-S630 6-disc Compact CD Changer Multichanger Digital Audio
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BMW E60 E87 E90 LCI N47 120d 320d ECU Control Unit Kit DDE 7823420 CAS3 Key
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Volkswagen Golf Sportsvan 1.5 TSI DADA 150HP Engine ECU Key + Lock 05E907309 DSG
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Seat Module BMW E46 E64 Front Seat Control Unit Memory 7019255
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BMW E61 E65 Suspension Air Supply Compressor Control Unit
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Mini Cooper One F54 F55 F56 F60 ECU Body Domain Controller BDC Module 9369635
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Audi A4 B8 A5 8T Onboard Comfort Supply Control Module Unit ECU 8K0907063L
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Ford Transit MK7 Diesel Engine Wiring Cable Harness CC1T-12B637-BAE
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BMW E60 E63 E64 On-Board Navigation Monitor Display Screen 6,5" 9145103
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BMW X3 X5 E53 E83 EWS III Central Locking Immobilizer Module ECU 6934529
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BMW F30 F31 Lane Change Wiring Sensor Module Master Right O/S HC-2 6856283
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Mercedes W202 A208 C208 W208 W210 Fuse Box Relay Control Unit A0005400072
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BMW E60 E61 LCI E90 E91 E92 CAS3 Control Unit Key Reading Module 9147190
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Mini Cabrio R57 Roof Operating Unit Light Switch Panel 3450545
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Relay Mercedes E200 S124 Petrol M111 Overload Protection Relay A2015403245
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Mercedes C207 Rear Radio Amp Sound Amplifier Audio Getaway Becker A2078205289
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Mercedes W176 W246 Emergency Call Switch Roof Wiring Cable Loom A2465402710
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BMW Z4 E85 Roadster Cabrio Safety Information Module Airbag 6938264
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Mercedes W210 Fuse Box Sam Module Control Unit A0025451901
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Audi A4 B8 Petrol Engine Starter Motor Actuator 1.8 2.0 TFSI 06H911021D
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BMW X3 F25 20dX Diesel B47 190HP Engine Module ECU Kit DDE 8598806 Key CAS4
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Mercedes W204 Automatic Gearbox Transmission Module Unit ECU A0005455916
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Mercedes Sprinter W910 314 CDI OM651.958 143HP Engine ECU Kit A6519003603 Manual
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BMW E81 E82 E87 LCI E88 N47S 123d Engine ECU Kit DDE 7809002 CAS3 + Key Manual
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Mini R50 R52 Starter Motor Engine W10 0,9KW Bosch Actuator 1489994
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BMW E81 E87 LCI 116i 1.6 Petrol N43 122HP ECU Kit DME 7599881 CAS3 Key Manual
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Audi A6 C7 A7 4G 2.0 TDI Starter Motor Diesel Engine Denso 059911024P
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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 .