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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AdBlue Adapter Cable BMW F30 F31 F36 Lead Wiring Harness Loom 6841420
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Alternator Volkswagen LT35 2.5 TDI Diesel Engine Alternator 90A Bosch 074903025K
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VW Transporter T6 Negative Minus Earth HV Battery Cable Wire 7E0915181N
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Mini Cooper One R56 High SPEG DC/DC Fuse Distribution Box H5 3455236
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Audi S3 8V Module BCM Body Control Unit Module ECU 5Q0937084CP
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Audi A4 B8 Petrol Engine Starter Motor Actuator 1.8 2.0 TFSI 06H911021D
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BMW F30 F31 F80 M3 Sound Amplifier Hifi Audio Control Unit Harman Becker 9381882
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Mercedes S212 E220CDI OM651.924 170HP Engine Control Unit ECU Kit A6519005301
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Engine Wiring Loom Mini R50 Petrol W10 Module Harness Cables 7520321
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Mercedes W211 Door Module Front Right O/S Control Unit ECU A2118707226
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Audi A3 8Y Adaptive Cruise Control Radar Sensor Control Unit Module 5WA907572B
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Mercedes W205 SAM Module Front Body Comfort Control Unit ECU A2059006818
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BMW X1 E84 2.0dX N47 177HP Engine ECU Kit DDE 8510591 CAS3 + Key Manual
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BMW F20 F30 LCI 116d B37 116HP Engine Control Module ECU DDE 8596362 Manual
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Mini F55 Petrol Engine ECU Control Module Unit 6821977
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BMW F20 F21 M135i F30 F31 335i N55 Engine Control Unit ECU 8606776 Automatic
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BMW 3 Series E90 Xenon Footwell Light Module Control Unit ECU PL2 FRMFA 6961134
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Mercedes SLK R171 Stereo Radio CD Player Head Unit A1718200386
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BMW F20 F21 F22 F30 F31 F32 Body Control Module Unit FEM ECU LR01 9314234
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BMW E84 Footwell Light Module Control Unit ECU PL2 FRM3R 9224592
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BMW 3 5 Series E46 F30 G30 G31 Battery Cable Negative Cable Minus Cable 8386674
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BMW X5 E70 3.0d M57N2 235HP Engine Control Unit ECU KIT DDE 7806976 Automatic
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Mercedes W205 PDC Park Assist Control Module Ecu A2229000905
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Mercedes-Benz M ML W163 OM612 Engine Wiring Harness Loom Cable A1635402810
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Mercedes W213 Bonnet Actuator Pedestrian Protection Left Right N/O/S A2139062201
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Skoda Octavia Mk3 5E Multifunction Display Screen Control Unit 5E0919605M
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BMW E60 E61 Radio Professional Navigation System Controller Head Unit 9214925
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Audi A5 8T Multimedia Radio Sat Nav Screen Display Head Unit 8R0919604
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Audi A1 8X Battery Terminal Fuse Socket Retainer 6C0915343A
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Audi A5 8T Navigation System Car Sat Nav Computer Head Unit CIC 4G0035061B
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BMW E60 E63 E64 On-board Navigation Monitor Display Screen 6,5"
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BMW Z4 E85 2.5si N52 218HP Engine ECU Control Unit DME 7561684 Manual
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Starter Mercedes Sprinter W906 Diesel Engine Starter Motor Valeo A0061517401
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Mini Cooper R56 LCI ECU Footwell Light Module FRM3R LOW EKS Lear 3456394
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Mercedes W176 W204 W207 Fuel Pump Module Petrol Control Unit ECU A0009000104
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BMW F20 F21 LCI Mini F55 F56 Top Hifi Audio Amplifier Harman Kardon 2622869
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Mercedes-Benz M ML W163 Front Left Right Door Wiring Loom Harness A1635403033
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BMW 5 6 Series E60 E61 E63 Driver Side Door Airbag Control Unit Module 6945146
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Mercedes W176 W246 Door Front Left N/S Control Unit Module ECU A1669004102
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Audi A6 C6 Diagnostic Interface Gateway Control Module Unit ECU 4F0907468D
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Mini Cooper R50 PDC Ultrasonic Parking Sensor Cool Blue Metallic A27
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Radio Head Unit Mercedes W212 COMAND Navi CD DVD Player Control Unit A2129068800
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Airbag Module Mercedes W169 W245 Air Bag Sensor Control Unit ECU A1698207826
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Audi A4 B8 2.0 TDI Alternator Generator 150A Diesel Engine Unit 03G903016F
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Mercedes W203 W209 W639 CD 6 Disc Changer With Magazine A2038703389
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BMW E81 E87 LCI E90 E91 120d 320d Diesel N47 ECU Kit DDE 7810000 CAS3 + Key
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BMW Z4 E89 Professional Navigation System Computer CIC 9218337
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Seat Module Mercedes W204 W212 Memory Control Unit Driver's Side A2129005200
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Ford Transit Custom 2.0 EcoBlue 130HP FWD Engine ECU GK21-12A650-CA Manual
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Mercedes W639 OM651.940 136HP Engine Unit Module ECU Kit A6519009302 Key Manual
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Smart Fortwo C453 Interior Temperature Sensor Cable Wiring A4539050301
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BMW 1 2 3 4 Series F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9315685
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Footwell Module Mini R56 LCI Light Low EKS ECU PL3 FRM3R Lear 3457426
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BMW E93 Hifi System Amplifier Sound System Amp 9145162
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Volkswagen VW Passat B7 Module BCM Body Control Unit Module ECU 3AA937087R
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Mercedes W639 109CDI 646.980 Engine ECU Kit Ignition + Key + Lock A6461507272
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Audi A4 B8 3.2 FSI Alternator Generator 06E903016N
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Renault Master III Vauxhall Movano B 2.3 DCi Diesel Starter Motor 233003407R
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VW Polo Petrol Engine Control ECU Manual Siemens 5WP1630440 03E906033
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Part no. E92-PDC-WIRING-LOOM-HARNESS-REAR-BUMPER-1
BMW E92 LCI PDC Wiring Loom Harness Rear Bumper
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Mercedes W204 Front Fuse Box Relay Control Unit SAM Module A2129005622
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BMW X5 E70 Footwell ECU Light Control Module Xenon FRM II Lear 9170453
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BMW i3 I01 High Voltage Energy Storage Unit Wiring Cable Wire 6809274
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Land Rover Freelander 2 Display Screen Multimedia Navigation Sat 6H5210E958
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BMW F10 F20 F30 Tow Bar Trailer Towing Control Module Unit AHM 4 6856747
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Mercedes W204 C220 CDI 651.911 Engine Control Unit ECU A6519007500 Automatic
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Audi A5 8T Parking Brake Handbrake Module Control Unit 8K0907801C
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Mercedes W211 Radio Head Unit CD Audio Player Control Unit A2118705694
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Audi A5 8T A4 B8 2.0 TFSI Engine Alternator Generator 06H903017T
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BMW F20 116i 118i N13 Petrol Engine ECU Control Unit Module DME 7634297
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Nissan Qashqai Diesel Engine Starter Motor Actuator Starter 23300JG70A
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Audi A6 C7 Gateway Module Control Unit ECU 4G0907468AB
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Mercedes W205 W238 Fuse Box Cover Control Unit Holder Bracket A2055400840
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Pedestrian Protection Sensor BMW F10 F11 Front Bumper Crash Impact Unit 9261962
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BMW E60 E61N LCI E63 M5 M6 Control Unit For Ionic Current 7834713
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Engine Wiring Mercedes W906 Diesel OM651 Cable Loom Harness A6511505120
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BMW 1 3 Series E81 E87 E90 E91 E92 Radio CD Professional 65129132214 9132214
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Ford Transit MK7 Diesel Engine Wiring Cable Harness CC1T-12B637-BAE
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BMW X5 E53 Automatic Gearbox Basic Control Unit Module EGS 7544721
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Audi A3 8V 2.0 TDI CRLB Diesel Alternator 03F903023D
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BMW E87 E90 N46 120i 320i 150HP Engine Unit ECU kit DME 7565300 CAS3 Key Manual
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BMW X3 F25 ICM Control Unit Air Module SRS Airmodule ECU 6853992
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Mini Cooper R55 R56 R57 LCI R60 Radio Boost CD Player Head Unit 3457434
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Audi A4 B8 Starter Motor Engine Motor Actuator Diesel Bosch 03L911021E
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Part no. 7565300-4
BMW E87 E90 N46 120i 320i 150HP Engine Control ECU DME 7565300 Manual
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Audi A6 C7 CD Player Radio Stereo Head Unit MMI NAVI 4G0035193C
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Mercedes W204 Battery Fuse Box Positive Distribution Terminal A2075401550
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Mercedes W906 313 CDI OM651.955 129HP Engine ECU Kit A6519002600 Key Lock Manual
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Part no. 7P6907357A
Skoda Octavia 5E Front Lamp Headlight Range Control Module Unit ECU 7P6907357A
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Part no. 9166708-4
BMW 3 E91 Touring Xenon Footwell Light Control Module LCM PL2 FRM II 9166708
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Part no. 03G906016HJ
Volkswagen Golf 5 2.0 TDI Engine Control Unit ECU Manual 03G906016HJ
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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 .