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 6 X3 X5 Series E53 E60 E61 E63 E83 Cigarette Lighter Socket 6973036
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Audi Q3 8U 2.0 TDI Fuel Pump Sender Control Relay Module Unit ECU 5Q0906121F
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MINI R50 One 1.6 W10 90HP Engine ECU Kit DME + EWS + Key 7527610 Automatic
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BMW X3 E83 LCi Rear Door Window Lifter Left N/S 6925965
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Renault Trafic II Opel Vivaro A 2.0 DCI Alternator Bracket Mount 8200527320
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Mercedes Sprinter W906 Connector AUX USB Adapter Port Socket A4478200087
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Mercedes W203 Front SAM Control Unit Module Fuse Box A2035454101
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Peugeot 307 CD Player Radio Stereo Head Unit 96766518XT00
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Mini Cooper One R50 Petrol W10 Engine Wiring Loom Harness Module 7533097
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Alternator BMW E53 E83 M57N2 Generator Diesel Engine Power 150A 7797661
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BMW E60 E61 Rear PDC Parking Sensor Mysticblau Mystic Blau Blue 7115654
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BMW E60 E61 LCI 520d N47 Diesel Engine Control Unit ECU DDE 7812500 Manual
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BMW X3 Series E83 2.5i 3.0i M54 Battery Positive Power Cable Terminal 3414876
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BMW E87 E90 120i 320i N46 150HP ECU Kit DME 7552176 CAS2 + Key Manual
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BMW X5 Series E53 Amplifier Compensator Holder Catch Bracket 6927786
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BMW F80 M3 F82 F83 M4 431HP Engine Unit Module ECU DME 8679840 Dual Clutch
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Parking Sensor Mercedes W169 W204 W212 PDC Sensor Front Mountain Gray 787
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Skoda Octavia 5E Audi A3 8V Body Control Comfort Module BCM ECU Unit 5Q0937084AC
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Audi A4 B9 Front Door Control Module Unit Driver's Side 8W0959593E
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Mercedes W205 W238 Fuse Box Cover Control Unit Holder Bracket A2055400840
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Mercedes Sprinter W906 Air SRS Bag Control Module Unit 0285010033 A9064460742
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Mini R50 R53 Radio Boost CD Player Head Unit Autoradio Player 4154934
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Mercedes CL C215 W220 Sam Control Module Fuse Box Unit A0345459432
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Radio Head Unit Ford Transit Connect 6000 CD Media Player Unit AT1T-18C815-BA
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Ignition Wiring Harness Mini Cooper One R55 R56 R57 Injection Valve 7567119
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Communication Module Mercedes W205 W213 C253 Hermes LTE Control Unit A2389007704
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BMW E90 Radio Professional CD Player 6983018 65126983018
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BMW E84 20dX N47 177HP ECU Control Unit Kit DDE 8512498 Automatic Transmission
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Battery Cable Mercedes W176 W246 Negative Lead Wiring Harness A1669056001
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BMW X3 Z4 E83 E85 E86 Radio Business CD Player 9173686
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BMW 1 Series E81 E82 E87 LCI E88 N47S 123d ECU Kit DDE CAS 3 Key 8510593 Manual
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Mercedes ML W164 OM642 Diesel Engine Wiring Loom Harness Cable A6421507733
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Business Navigation BMW F20 F21 F30 F31 Sat Nav Head Unit Player 9365833
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Audi Q3 8U 2.0 TFSI CULB 180HP Quattro Engine ECU Kit 06K907425C Ignition + Key
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Audi A4 B9 2.0 TFSI CVKB 190HP Engine Control Unit ECU 06L907309A Automatic
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BMW E90 Light Module Xenon Footwell Control Unit Module ECU PL2 FRM II 9153779
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Mercedes-Benz E W207 Cabrio A207 Auxilliary Battery Bracket A2075452540
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Ford Transit Connect Starter Motor Engine Actuator Diesel 1.6 3M5T-11000-CF
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Radio Head Unit Mercedes SLK R171 CD Player Control Unit Module A1719000100
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Alternator Generator BMW F07 F10 F11 FN57N N57Z Diesel Engine Valeo 8570673
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Audi Q3 8U Petrol Alternator Generator 14V 140A 06J903023B
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Mercedes SLK R171 Crash Sensor Air Bag Impact Module Control Unit A0028201326
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Audi Q7 4M Rear Boot Lid Tailgate Opening Module Cable Wiring Line 4M8962239
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Mercedes W176 Front Pressure Impact Crash Sensor Module With Hose A1769051600
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Mercedes W169 A150 M266.920 95HP Engine Control Unit ECU Kit A0034466040 2 Keys
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BMW E93 E93N LCI Control Unit Module Passive Go 9147052
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Audi A6 C6 Front Windscreen Rain Light Solar Sensor Unit 8K0955559D
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BMW 3 Series E90 E91 M3 Wiring Loom Front Door Right Driver's Side 6938211
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Seat Wiring Mercedes C117 W176 W246 Loom Harness Cable Left N/S A2465409711
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Mercedes Vito W447 Front Fuse Box Relay Control Unit Module A4479060117
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Audio Amplifier BMW F20 F21 F22 Harman Kardon Active Sound Design Unit 9390396
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Headlight Module BMW F83 M4 F33 LCi FLE2 Front Lights Right Left N/O/S 8494843
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Audi A5 8T Body Control Comfort Unit Convenience Module BCM1 ECU 4H0907063DB
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Radio Player Mini Cooper One R55 R56 CD Audio Player Head Unit 3454566
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Ford Transit MK6 2.4 TDDI Diesel Engine Control Unit ECU 2C1A12A650EA Manual
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BMW E90 E91 LCI 330d Diesel N57 245HP ECU Engine Kit DDE 8510221 CAS3 + Key
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Audi Seat Skoda Volkswagen 1.4 TSI Petrol Alternator Generator Valeo 04E903023K
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BMW 3 Series E92 ECU Body Control Module Junction Box L1 PL2RR JBBFE 9227178
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BMW E81 E90 LCI Business System Car Infotaiment Computer CIC 9239323
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Starter Motor Mercedes W213 C238 C253 Engine A2749062100
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Mini Cooper One R50 R53 Navigation Screen Display Instrument Cluster 6921521
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Ford Transit Mk8 VI Glow Plug Controller Unit Module Relay GK2112B533AA
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BMW E39 Alternator Generator 14V 50/90A 1432978
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Mercedes W205 Parking Sensor Wiring Front Bumper PDC Loom Cable A2055404007
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BMW X1 F40 F48 Mini F55 F56 F57 Engine Starter Motor 8647866
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Engine Wiring Mercedes W168 668942 Diesel Module Loom Harness Cables A6681500033
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Battery Cable Mercedes W176 W246 Negative Harness Lead Terminal A2469069600
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Mercedes ML W164 Air Module SRS Control Unit ECU A1648207926
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Volkswagen Sharan 7N Engine Starter Motor Lucas 02E911024CX
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BMW 7 Series E65 E66 Driver's Seat Airbag Sensor Control Unit Module
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Mercedes CLK W209 Radio CD Player Stereo Audio Head Unit A2098700289
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BMW Z4 E89 Roadster Cabrio Convertible Top Module CTM 09221135 9221135
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Mini Cooper R55 R56 R57 LCI Radio Boost CD USB Bluetooth Head Unit 3457050
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BMW 3 Z4 Series E46 E89 Mini R50 R52 Parking Control Module Unit PDC 6985501
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BMW 3 X3 Series E46 E83 Navigation Computer GPS System DVD Player Unit 6942908
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Part no. 03D903025J
Seat Ibiza Skoda Fabia Volkswagen Polo Mk5 6R 1.2 Petrol Alternator 03D903025J
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VW Polo 9N MK4 Fabia II 1.4 TDI BMS Alternator Mount Support Bracket 038903143AG
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Mercedes-Benz C W204 Rear Left N/O/S Right Door Wiring Loom Harness A2045407609
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Mercedes Vito W447 Negative Battery IBS Cable Wiring A4479050004
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Skoda Octavia 5E Gateway Control Module Unit ECU 5Q0907530N
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Mini Cooper One R50 R52 R53 Cable Door Right Wiring Harness Loom 6975062
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Mercedes CL203 W203 Battery Terminal Fuse Box Control Unit Module A2035450803
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Audi A3 8V Bang Olufsen Audio AMP Amplifier Module Control Unit ECU 81A035466B
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Volkswagen Golf Sportsvan 1.5 TSI Alternator Valeo 14V 140A 04C903021A
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Mini Cooper R59 Footwell Light Module AHL EKS ECU LEAR PL3 FRM3R 3457033
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BMW F10 Central Gateway Module ECU Control Unit LEAR ZGW-02 4SK 9291450
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Mercedes S212 Roof Antenna Estate Shark Trim Obsidian Black - 197 A2128270028
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Battery Wiring Mercedes ML W166 Battery Negative Terminal Cable Wire A1665420518
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GPS Navigation Unit BMW E38 E39 E46 X5 E53 System Computer 6920759
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Land Rover Freelander 2 2.2 Diesel DOHC Engine ECU Module 6G9112A650AE Manual
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Part no. 7550469-3
BMW E60 E61 E81 E87 LCI E90 E91 E92 E93 Alternator Petrol 180A 7550469
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Mercedes W164 W251 Fuse Box Relay Module Control Unit A1645403572
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Part no. 7570488-5
Mini Cooper R50 R52 R53 W10 W11 1.6 Petrol Bosch Engine Starter Motor 0986018830
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Audi A3 8P Body Control Comfort Unit Module BCM Unit 8P0907279C
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BMW 3 Series E90 ECU Body Control Module H1 PL2 JBBFE Junction Box 9131776
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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 .