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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Mercedes-Benz C-Class W203 M111 Starter Wiring Positive Plus Cable A2035401806
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MMI Head Unit Audi A3 RS3 8V Multimedia Navigation Control Module 8V1035035E
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Head Unit BMW E81 E90 LCI Business System Car Infotaiment Computer CIC 9239321
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BMW E87 LCI E90 120i 320i Petrol N43 170HP Engine ECU Kit DME 7579142 Manual
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Door Wiring Harness BMW F31 F34 Front Driver Door Wiring Loom Cables 9326409
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Fuse Box VW Transporter T5 2.0 TDi CAAA Power Distribution Point Box 7E0937550
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BMW X5 Series E53 Light Check Module Control Unit ECU Lear LCM IV LWR 6960255
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BMW E90 E91 LCI E92 330d N57 245HP ECU Engine Kit DDE 8510221 CAS3 Key Manual
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Mercedes W639 Automatic Gearbox EGS Control Unit Transmission Module A0005458916
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BMW E92 Radio Signal Aerial Antenna Amplfier Diversity 315Mhz Booster 6965710
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Audi A3 8P Front Passenger Door Wiring Left N/S Harness Loom Cable 8P4971036F
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BMW E60 E90 N52 325i 525i 218HP Engine ECU Kit DME 7555361 CAS2 Key Automatic
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Mercedes W204 Fuse Box Relay Control Unit Electric Module SAM A2319007707
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Audi A4 B9 Wireless Charger Centre Console Phone Charging Module 8W0035502B
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BMW X5 Series E53 Basic Body Control Unit Module GM3 9117101
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On-Board Screen BMW F20 F21 F30 F31 Information Display Touch Monitor 10,25"
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Mercedes Vito W639 OM646.980 Engine ECU Control Unit Module A6461500977 Manual
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BMW 1 2 F20 F21 LCI F22 F23 Central Information Display Screen 8,8" 9381040
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BMW F20 F23 LCI X3 F25 X4 F26 F30 F32 F33 Control Unit Module ICM High 6864207
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BMW G11 G30 G31 X4 F26 Telematics Module Bluetooth Control Unit ECU 2447787
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BMW F20 F30 LCI G30 G31 Head Unit Media Navigation Headunit Player 8734827
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Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023
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Mini Cooper SD F55 F56 B47 170HP Engine ECU Kit DDE 8587952 Key BDC Lock Manual
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BMW X3 E83 3.0d M57N2 218HP ECU Control Unit Kit DME 7801217 EWS3 Key Automatic
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Mercedes W204 CD Player Radio Stereo Navigation Sat Nav Head Unit A2049001813
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Mercedes CL203 Fuse Box Control Unit Module SAM A2035454901
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BMW G30 F90 M5 Antenna Aerial Diversity Amplifier Unit 8703399
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BMW 3 5 7 X5 Series E38 E39 E46 E53 GPS Navigation System Computer Unit 6915035
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Volkswagen Tiguan 5N Fuel Filler Flap Actuator Release Servomotor 5N0810773D
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Mercedes CLK W209 Convertible Fuse Box Rear SAM Module Control Unit A2095450901
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Renault Trafic 3 Vauxhall Vivaro B Body Control Module ECU BCM T4 284B10847R
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Mercedes W447 Rear Bumper Wiring Loom Parking Sensor Cable Harness A4475408550
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Front Camera BMW G30 G31 G38 F97 X3M F98 X4M Windscreen Purpose Unit 5A081A1
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BMW F20 F30 LCI 120d 320d B47 Engine ECU Kit DDE 8596362 FEM + Key Automatic
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Mercedes Vito W447 116 CDI 654.920 163HP Engine ECU Kit A6549009400 Key Lock
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Mercedes-Benz W169 W245 Engine Control Unit ECU Kit A0034466040 + 2 Keys Manual
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Fuse Box Mercedes C204 W204 Front Relay Control Unit Module SAM A2129003414
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BMW 3 Series 1 E90 Radio Professional CD Player 65126971703 6971703
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BMW F22 F30 F46 216d 316d B37 Diesel 116HP ECU Engine Control DDE Kit 8598759
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SD Card Mercedes W205 C220d Garmin Map Pilot Navi Europe 20 / 21 A2139064607
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CD Changer BMW E81 E87 E90 E91 E92 6-disc Without Magazine 6964602
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Mercedes A205 Convertible Comfort Control Unit Module ECU A2059003740
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Body Control Module BMW E90 ECU Junction Box H3 PL2 JBBFE Lear 6983299
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BMW E60 E61 E90 E91 LCI 325i N53 218HP Engine Control ECU DME 7594305 Automatic
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BMW X3 E83 LCI Battery Positive Lead Red Cable Plus Pole Wire 3414878
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BMW Mini Cooper R60 R61 Wiring Cable Harness Instrument Dashboard Dash 9812264
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BMW X3 X4 G01 G02 Footwell Light Module Carpet Control Unit ECU Right 7478448
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Mercedes W204 Navigation CD Player COMAND Radio Sat Nav Head Unit A2048704994
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BMW 5 6 Series E60 E61 E63 Passenger Side Door Airbag Control Module 6939712
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VW Volkswagen Passat B5 2.0TDI AWX 130HP Engine Unit Module ECU 038906019KE
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Mercedes W205 Wiring Loom Harness Clutch Connector Cable Control A0335456326
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Citroen Relay Peugeot Boxer Fiat Ducato Fuse Box Control Unit 1388593080
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BMW F10 F11 520d N47N 184HP Engine ECU Kit DDE 8513242 CAS4 Keys Automatic
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BMW E90 E91 E92 330i N53 272HP ECU DME Kit CAS3 + Key 7594305 Automatic
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BMW 3 Series F30 F31 Radio Professional CD Player 9281915 65129281915
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BMW 7 Series E65 740i Petrol N62 Engine Wiring Loom Harness Automatic 7572883
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Part no. 5Q0959655AB
Audi A3 S3 8V Air Module Control Unit ECU Impact Sensor 5Q0959655AB
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Adblue Module Mercedes W205 W222 W253 Exhaust Gas Control Unit ECU A0009003313
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BMW E84 E91 Ultra Sonic Burglar Alarm System Sensor Module 9244135
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Mercedes W221 Final Stage Speaker Booster Amplifier Sound System A2218209089
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BMW F01 F02 F10 F11 Body Gateway Control Module Unit ZGW-01 Lear 9219318
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Panasonic CY-ET900 Electronic Toll Collection Unit Japanese Highway Module
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Mini Cooper R55 R56 R57 LCI Radio Boost CD USB Bluetooth Head Unit 3457050
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BMW 5 6 Series E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9157155
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Mini One R56 LCI R60 N16 98HP Petrol Engine ECU DME 7607685 Control Unit Manual
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Mini Cooper One F54 F55 F56 F60 ECU Body Domain Controller BDC Module 6821970
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Audi A6 C6 Front Driver Door Wiring Right O/S Harness Loom Cable 4F1971029AD
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Volkswagen Touareg Yaw ESP Rate Sensor Module Unit Control ECU 7H0907652
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Lucas AGM Start Stop Accumulator Battery 80Ah 800A 12V 110 AGM
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BMW F20 F30 LCI 118i 318i B38 136HP ECU Kit DME 8691836 Key FEM Lock Manual
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Mercedes W204 W207 Centre Console Connector AUX USB Port Socket Trim A2078210411
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Audi Q3 8U Headlight Headlamp Cooling Fan Left Right N/O/S 8U0907463A
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Mercedes CL203 CLC 180K 143HP M271.946 Engine Control ECU A2710108747 Automatic
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Vodafone V-Auto Plug & Drive GPS Car Tracker Telematic Services System OBD
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Audi A4 B8 Bose Audio AMP Amplifier Module Control Unit ECU 8T0035223AD
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Audi A4 S4 B9 Front Door Wiring Harness Loom Cable Left N/S 8W0971030
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Mercedes W205 SAM Module Rear Body Comfort Control Unit ECU A2059008304
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BMW F01 F10 F12 F30 Front Seat Electrical Control Unit Module ECU BA/M 9248556
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Mercedes W906 OM651 Glow Plug Control Replay Module Unit ECU A6519003802
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Door Wiring Mercedes W205 C253 Passenger Side Cable Harness Loom A2055409309
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BMW X3 E83 LCI HeadLamp Light Control Module Lear LM II AHL 3449689
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Antenna Amplifier BMW E60 LCI Aerial Diversity Control Unit DAB 6946409
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Mini Cooper D R55 R56 Diesel W16 109HP ECU Control Unit DDE 7809794 Manual
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Door Wiring Mercedes W204 Front Loom Cable Wire Harness A2044401338
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Mini Cooper F56 JCW B48 231HP Petrol Engine ECU DME 8691833 Manual Transmission
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BMW E81 E87 E90 E91 E92 E93 Active Steering Control Unit Module 1277022065
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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 .