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 5 Series E60 E61 LCI Battery Cable Lead Positive Underfloor 6927704
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Mercedes W118 W177 W206 W247 Air Quality NOX Sensor A0009054807
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Positive Cable Vauxhall Insignia Battery Starter Alternator Plus 13295310
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Mini Cooper D R56 LCI R60 N47N 112HP Engine ECU Kit DDE 8519663 Key CAS3 Manual
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BMW E60 E81 E87 E90 Snap-in Adapter Basic Telephone NOKIA 6230I
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Audi A5 8T Body Control Comfort Unit Module BCM Convenience Unit ECU 8K0907064CQ
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Volkswagen Polo 6N Aerial Roof Antenna Base Antenna Unit 1J0035505A
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Audi Q5 FY Gateway Control Module Unit ECU 8W5907468F
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Ford Transit Mk8 Fuse Box Power Distribution Relay 2.0 Diesel KK3T-14D068-JE
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BMW X5 F15 X6 F16 30dX N57N 258HP Engine ECU Kit DDE 8586540 BDC Key Automatic
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Sam Module Mercedes ML W164 Rear Relay Box Control SAM Unit A1649004400
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BMW E87 E90 Navigation Controller DVD M-ASK Business System Head Unit 9149232
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Mini Cooper One R56 Footwell Light Module ECU HIGH Lear PL3 FRM II 3452092
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Mini Cooper R56 Electrical System Fuse Distribution Box 6906548
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Mini Cooper R56 Automatic Gearbox TCU ECU Control Unit EGS Module 7579136
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BMW E88 E93 LCI ECU Control Unit Air Module 9248298
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Mercedes W906 311 CDI 109HP OM646.985 Diesel Engine Control Unit ECU A6461506372
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Ford Focus Mk3 Bluetooth Microphone Module Wiring Loom AM2T-19A391-AB
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Mercedes W211 Front Drivers Door Left N/S Control Module A2118701126
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BMW X1 Series F48 Head Air Module Roof Curtain Left N/S 7352601
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Mercedes C140 W202 Engine Cooling Radiator Fan Control Unit Module A0165459632
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BMW F20 F21 F30 LCI G30 B38 B48 Starter Motor Engine Petrol 8621839
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VW Volkswagen Audi Glow Plug Relay Unit Bosch 11 Pins 4E0907282A 0281003029
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Mini Cooper R57 R58 R59 Microphone Hands Free Telephone 9167397
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BMW 1 3 5 Series E87 LCI E90 E60 Hands Free Bluetooth Module High MULF2 9178898
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Audi A4 A5 A6 Q5 Q7 Radio Control Head Unit Harman Becker 4F0035053B
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Land Rover Discovery 4 L319 PDC Parking Module Control Unit AH42-15K866-BG
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Ford Galaxy MK3 Mondeo MK4 2.0 TDCi Diesel Engine Alternator AG9T-10300-AA
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VW Volkswagen Polo 6R Negative Minus Earth Cable HV Battery Harness 6C0915181C
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Alternator Ford Focus MK3 Fiesta MK6 1.6 TDCi Engine Generator AV6N-10300-GC
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BMW E60 E61 Touring Light Module Control Unit ECU LM MAN.LWR 9116255
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BMW E65 Control Unit Power ECU Module 6921566 6943489 6935431 6957026
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Mercedes W204 C207 W212 Earth Ground Cable Transmission To Body A2045407335
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BMW 3 Series E46 Radio Business Cassette Player 6928762
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Audi A4 B8 A5 8T Body Control Comfort Unit Module Unit ECU 8K0907063M
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Mini Cooper One R56 Footwell Light Module High EKS ECU PL3 FRM II 3453743
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Mercedes X253 Steering Wheel Contact Switch Control Plate A0994644206
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Audi A3 8L TT 8N Battery Cable Positive Wire Lead Terminal 1J0971228AE
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Ford Fiesta MK7 Battery Box Tray Housing Holder Bracket 8V2110718AB
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BMW 3 Series E46 Coupe Saloon Aerial Antenna Amplifier Diversity 433MHZ 6907123
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BMW E87 E90 CAS2 ECU Control Unit Module 61356943791 6943791
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Audi A8L 4H Air Suspension Control Unit Module ECU 4H0907553E
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BMW X1 E84 USB AUX-IN Socket Plug 9241331
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Mercedes ML W163 Yaw Rate Sensor Turn Rate Speed Module A1635422318
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BMW E91N LCI ECU Body Control Module Junction Box H2 9247472
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BMW E63 E64 LCI Camera Lane Departure Warning Unit 9137725
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BMW 3 5 Series Mini Cooper E60 E93 R56 R60 IBS Negative Battery Lead 6938568
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BMW 3 Series E90 Footwell Light Control Module Lear FRM3R PL2 9230445
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Engine Wiring Mercedes W168 668942 Diesel Module Loom Harness Cables A6681500033
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Microphone Mercedes W447 W907 W910 Hands-free Interior Mic Unit A4478200035
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BMW E65 E66 Control Unit Air Bag ECU Gateway Module Unit 9115360
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Mercedes Sprinter W907 W910 Body Control Module BCM V2 ECU A9079000305
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BMW 1 Series E81 Body Control Module ECU L2 PL2 JBBFE II Junction Box 9160187
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Air Module Control BMW X3 F25 F12 F13 Air Module Unit ECU9247383
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Volkswagen Golf Mk5 Fuel Pump Control Relay Module Unit ECU 12V 1K0906093D
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Mercedes EQA350 H243 4matic Electric Battery Charger Control Module A0009009935
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Mercedes GLE250 W166 OM651.960 204HP Engine ECU Kit Ignition + Key A6519004201
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Mini Cooper S R55 R56 R57 N14 1.6 174HP ECU Kit DME 7641003 CAS3 + Key Manual
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Audi A4 B7 Cabrio Folding Top Roof ECU Module Control Unit 8H0959255A
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Mercedes W221 C216 Keyless Go Easy Entry Control Module 433Mhz A2218702292
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Audi A4 B7 2.0 TDI Diesel Engine Control Unit ECU Module Manual 03G906016JD
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BMW E90 LCI Footwell Light Control Module LCM LED Basis 9224595
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Parking Distance Audi A3 8V TT Mk3 Seat Leon MK3 Control Module 5Q0919283F
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Citroen Berlingo Peugeot Partner CD Player MP3 Radio Stereo Head Unit 9666968177
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Radio Professional BMW E81 E82 E87 E88 E90 E91 E92 E93 Autoradio CD 9231928
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Mercedes X253 GLC 300e M274.920 4-Matic Engine ECU Unit Module A2749002900
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Battery Cable BMW X5 F15 Positive Plus Pole Distribution Box Wiring SBK3 9322056
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Mercedes W207 Telematic Communication Control Unit Module A1669005517
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Part no. 7575650-2
Mini Cooper R56 N12 W16 Alternator Generator Napa 7575650
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Part no. 04L903141B
Audi A5 8T Alternator Generator Rack Mount Bracket 04L903141B
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Audio Amplifier Mercedes W211 CLS C219 AMP Becker Sound Module Unit A2118706689
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Part no. 9278279
Mini R55 R56 LCI Instrument Cluster Speedo Navigation Display Screen 9278279
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VW Golf Mk5 Steering Angle Steering Wheel Column Control Module ECU 1K0953549AE
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Head Unit Mercedes W212 Radio Navi CD Player For Parts Not Working A2129005212
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BMW E46 M43 M57 Battery Cable Alternator Starter Base B+ Lead 1707017
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Parktronic Module Mercedes W204 PDC Parking Sensors Control Unit A2044401001
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Mercedes W903 Diesel Engine Alternator Generator 45-90A 14V A0101540802
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Renault Master III Opel Movano B 2.3 DCI CDTI Alternator Generator 231001822R
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BMW X5 E70 Footwell ECU Light Control Unit Module FRM IIIR Lear 9224617
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Volkswagen Golf MK7 Audi A3 8V Body Control Comfort Unit Module BCM 5Q0937084AG
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BMW F20 CD DAB Radio Bluetooth Head Unit 9331207
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Auto Radio BMW E81 E87 E90 E91 Radio BMW Business CD Player Control Unit 9216273
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Mercedes W204 COMAND Navigation CD Player Radio Sat Nav Head Unit A2049009510
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BMW X1 E84 Radio Navigation Head Unit Android CarPlay Display 10.25 XRC8667
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Mini Cooper S R55 R56 N14 1.6 174HP ECU Kit DME 7587548 CAS 3 + Key Manual
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Mercedes W213 SAM Body ECU Control Module Unit A2139009722
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Mercedes W204 USB Port Cable Multimedia Interface Cable MI2-Ipod A0028272104
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BMW X5 E70 LCI Footwell Light Control Module Unit Lear FRM3R XE 9287250
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Alternator Generator Mercedes W221 OM642 Diesel Engine 220A A0131540602 11304N
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BMW F20 F21 F30 F31 PDC Parking Sensor Ultrasonic SET x2 Glacier Silber - A83
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Audi Q7 4L Door Control Unit Module ECU Front Right O/S 4L0907290A
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BMW X3 E83 LCI Light Module Control Unit ECU Lights LM II LWR 3451528
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Driver Seat ECU Mercedes W203 A209 W211 Memory Control Unit Module A2118704626
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Mercedes W206 Front Door Wiring Harness Cable Left Right N/O/S A2065403645
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Peugeot 307 Citroen C4 C5 1.6 HDI Diesel Engine Starter Motor 9645100680
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Radio CD Player VW Volkswagen Golf 5 Passat B6 Head Unit MP3 RCD 300 1K0035186AF
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Mercedes W176 W246 A180 B180 BlueEFFICIENCY 270.910 122HP Engine ECU A2709002100
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BMW F01 F02 F03 F10 LCI X3 F25 Control Unit Rear Function Module 7327886
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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 .