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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Audi A4 B8 Door Wiring Harness Loom Front Cabling 8K0971029M
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Audi A4 B8 Gateway Interface Control Unit Module ECU 8T0907468AD
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VW Volkswagen Polo 4 9N Radio CD Player Stereo Audio Head Unit 6Q0035152D
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CD Changer Mercedes ML W163 6 Disc Changer With Magazine A1638201589
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Audi A3 8P Alternator Main Cable Wiring Harness Loom 1K0971349FL
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Mercedes W211 Rain Light Sensor Control Unit Wiring Loom Cable A2115409605
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BMW E82 Footwell Light Module LOW PL2 FRM II 61359197176 9197176
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Audi Q7 4L Boot Trunk Subwoofer Rear Bass Speaker 4L0035382B
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Audi A3 8P Battery Box Tray Covering Housing Trim Holder Bracket 3C0915443A
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Audi A3 RS3 8V AMR Module Rear Suspension Damper Control Unit 8V0907376E
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Audi Seat Skoda Volkswagen Gateway Control Unit Module ECU 3Q0907530AA
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BMW F20 F21 M135i N55 231HP Petrol Engine Control Unit ECU DME 8626472 Manual
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BMW X1 E84 18dX N47 ECU Engine Control Unit Kit DDE 8512499 CAS3 + Key Manual
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Audi A7 4G8 Body Comfort Control Module Unit BCM V2 4H0907064GB
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BMW F10 Light Control Footwell Module Unit ECU FRM III 9273628
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Yaw Sensor Mercedes R171 W203 W209 ESP Rotation Rate Unit Module A0055422118
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Mercedes W204 Navigation Radio CD Player Head Unit A2049007202
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Audi A5 F5 Xenon Headlight Resistor Ballast Relay Module Unit 7PP941572AC
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Audi TT 8J Audio Amplifier Radio Lear Sound Unit 8J0035223B
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Peugeot 3008 Yaw Sensor ESP Rotation Rate Acceleration Control Unit 9664661580
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BMW F20 F21 F22 F30 Radio Professional CD Bluetooth Player 9281517
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Door Module Mercedes W221 Front Right O/S Control Unit A2219007401
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Mini Cooper S F55 F56 Petrol B46C B48C Engine Wiring Cable Loom Harness 8678958
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Audi A3 8V 1.6 TDI DGTE 115 HP Engine ECU Kit Ignition + Key 04L907445G Manual
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Mercedes W212 W213 W205 W218 Positive Battery Tray Clamp A0009061505
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Mercedes S211 W211 Fuse Box Unit Cover Front A2115400082
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Mercedes C140 Headlight Module Ballast Relay Control Unit LCM A1405420732
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BMW E46 Wing Mirror Memory Control Unit Module ECU 8386427
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Mercedes W207 Telematic Communication Control Unit Module A1669005517
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Mercedes W203 W204 M271 Engine Alternator Generator Valeo 120A 14V A2711541402
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BMW E87 LCI ECU Body Control Module Junction Box H2 PL2RR 9247472
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BMW E46 Positive Battery Cable Plus Pole Lead 6910597
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Mini Cooper R60 Countryman Footwell Light Module High EKS ECU PL3 FRM3R 6827072
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BMW E60 E61 E63 E64 Parking Control Module Unit PDC 9185139
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Mini F55 F56 Cooper D B37 Diesel Engine ECU Kit DDE 8582719 BDC + Key Automatic
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Mercedes W907 315CDI OM654.920 Engine Unit Module ECU Kit A6549009400 BCM + Key
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Peugeot 5008 2.0 HDI DW10C Diesel Engine Control Unit ECU 9667082380
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Ford Focus Mondeo Diesel Engine Alternator Generator Engine Unit 6G9N-10300-UD
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Fuse Box Mercedes W211 W219 Junction Relay Control Unit Module SAM A2115459001
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BMW E60 E61 E63 E65 PDC Parking Control Module Unit ECU 9145158
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BMW 7 Series 1 E65 E66 Battery B+ Engine Compartment Terminal Point 8385164
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BMW E81 E87 LCI E90 E91 120d 320d N47 ECU KIT DDE 8506438 CAS 3 Key Automatic
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BMW F10 F11 Pedestrian Protection Sensor F-Optic Control Unit 9318777
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Mercedes CLS W219 Battery Fuse Box Control Unit Module A2119820402
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Mercedes-Benz M-Class ML W163 Gearbox Transmission Control Unit ECU A0305454632
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Mercedes W204 W212 Radio Control Function Button Knob Controller A2048709558
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Ford Transit MK7 Air Module ECU Control Unit 6C1T14B056AE
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Mercedes-Benz A B Class W169 W245 Battery Relay Module Unit A0035422519
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Alternator BMW X5 E70 X6 E71 M57N2 Generator 170A 170AMP 14V VALEO 7796125
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Battery Starter Wiring Mercedes W176 W246 Harness Cable Positive A2465407932
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Skoda Octavia 5E Audi A3 8V Body Control Comfort Module BCM ECU Unit 5Q0937084AC
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BMW 5 Series E60 LCI ECU Body Control Module Unit KBM Basis 9168833
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BMW E39 E46 E53 Radio BMW Professional TMC 65128385897 8385897
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Front Air Module Mercedes W205 X253 SRS Control Unit ECU A2059009627
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BMW 1 3 Series E87 E90 Hands-free Electronics Bluetooth Module MULF2 9178862
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Mini R50 R52 R53 Radio Boost CD Player Head Unit 9142414
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BMW E92 325i N52N 218HP ECU Control Unit Kit DME 7567362 CAS3 + Key Manual
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Mini One R56 N12 1.4 N12B14A 95HP Petrol ECU Kit DME 7589971 + CAS3 + Key
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BMW X3 E83 E46 E60 E61 E65 M54 Alternator Generator 150A 7521137
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Audi A4 B8 Door Module Rear Left Right N/O/S Control Unit Module ECU 8K0959795C
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BMW F20 120d F30 320d F36 420d LCI B47 190HP Engine ECU DDE 8473185 Manual
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BMW F20 F21 F30 F31 N47N Wiring Loom Harness Engine Gearbox Module 8585642
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BMW E60 E61 CCC CD Professional Navigation Controller 6953773 SPARES OR REPAIR
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Parktronic Module Mercedes W221 Parking Aid Sensors Control Unit A2215400901
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MINI S R52 R53 W11 170HP Engine Control Unit ECU DME 7557395 Manual Gearbox
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Mercedes W204 Rear SAM Module Fuse Box Relay Control Unit A2049060205
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Alpine CHM-S630 6-disc Compact CD Changer Multichanger Digital Audio
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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 .