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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Part no. A0015455716
Mercedes Vito W639 Automatic Gearbox EGS Control Unit Module ECU A0015455716
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Part no. A2129000829
Mercedes W207 W212 Head Unit Sat Nav Navigation Display Screen
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Part no. A6461500977-1
Mercedes Vito W639 646.980 Engine Unit ECU Kit A6461500977 Key Lock Automatic
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Part no. A2055402324
Mercedes W205 Center Console Ambient Lighting Light Wiring Harness A2055402324
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Part no. A6519060026-2
Starter Motor Mercedes W204 W212 W639 OM651 Diesel Engine Starter A6519060026
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Part no. A0009004436
Mercedes C118 C205 C253 Automatic Gearbox Control Unit Module ECU A0009008324
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Part no. A1695420018-KB
Mercedes W169 Front Bumper Parking Distance Sensor Parktronic Kosmos Black 191
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Part no. A2085403508
Mercedes-Benz W202 C208 W208 Parking Sensor Wiring Cable Rear PDC A2085403508
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Part no. A6395450232
Mercedes Vito W639 PDC Parking Distance Control Unit Module ECU A6395450232
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Part no. A2118700110
Mercedes W219 Hood Bonnet Light Solar Sensor Module A2118700110
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Part no. A1699004800
Mercedes-Benz A B Class W169 W245 SAM Control Module Fuse Box A1699004800
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Part no. A0009053011
Distance Radar Module Mercedes W177 W205 W253 Front Distronic Unit A0009053011
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Part no. A2059004433
Mercedes W205 Head Unit Radio CD Player Audio Sat Nav Multimedia A2059004433
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Part no. A2669001000
Mercedes-Benz W169 W245 Start Stop Starter Alternator Module ECU A2669001000
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Part no. A2038703389
Mercedes W203 W209 W639 CD 6 Disc Changer With Magazine A2038703389
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Part no. A1645403372
Mercedes ML W164 Fuse Box Relay Control Unit Rear A1645403372
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Part no. A2711535491-1
Mercedes C209 CLK200 M271.955 184HP Engine ECU Kit Ignition A2711535491 Lock Key
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Part no. A2039060005-1
Mercedes-Benz C CLK W203 C209 1 Sam Control Module Fuse Box Front A0025459301
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Part no. A2059000044
Mercedes C205 Midline Sound Audio Amplifier Unit A2059000044
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Part no. A0061512501-1
Mercedes-Benz C-Class W203 W204 W211 Diesel Engine Starter Motor A0061512501
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Part no. A2469008214
Radio CD Player Mercedes W176 W246 Audio Navigation Stereo Head Unit A2469008214
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Part no. A1729008412
Mercedes SLK R172 Roadster Folding Vario Roof Control Module A1729008412
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Part no. A2229063805
Fuse Box Mercedes GLC X253 Engine Compartment Relay Box Unit A2229063805
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Part no. A1635400182
Mercedes-Benz ML-Class W163 Fuse Box Lid Cover Box Trim A1635400182
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Part no. A0009002218
Mercedes C253 Fuel Pump Module Control Unit ECU A0009002218
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Part no. A6397600704
Mercedes Vito W639 Front Left Door N/S Lock Bowden Pull Cable A6397600704
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Part no. A6461503278
Mercedes Vito W639 OM646.982 109HP Engine Module ECU Unit A6461503278 Manual
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Part no. A2035403533
Mercedes W203 C209 Battery Starter Alternator Wiring Harness Cable A2035403533
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Part no. A9079000806
Mercedes Sprinter W907 W910 Front SAM Body Control Module Unit ECU A9079000806
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Part no. A2139052403
Mercedes W213 Trunk Tailgate Rear Switch Sensor Module A2229059004
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Part no. A0305454932
Mercedes-Benz E W210 Estate CDI Gearbox Control Module Unit ECU A0305454932
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Part no. A2038206426
Mercedes-Benz C-Class W203 Front Right Door O/S Control Unit Module A2038206426
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Part no. A1708200386
Mercedes-Benz A E M Class W163 W168 W210 CD Player Audio 10 Stereo Radio Unit
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Part no. A2119060700
Mercedes CLS W219 Head Unit CD Player Navigation Radio Audio Unit A2119060700
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Part no. A4145400836
Mercedes-Benz Vaneo W414 Front Left Right N/O/S Door Wiring Harness Cable
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Part no. A0061510601
Mercedes W164 M113 Petrol Engine Starter Motor A0061510601
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Part no. A0025424419
Mercedes Vito W639 Coolant Radiator Fan Relay Control Module A0025424419
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Part no. A2045453901
Mercedes W204 Fuse Box Relay Control Unit Electric Module SAM A2045453901
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Part no. A1715451701
Mercedes SLK R171 Fuse Box SAM Relay Control Unit Module A1715451701
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Part no. A2539005906
Mercedes C253 Body Control Module Temic A2539005906
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Part no. A2139008828
Air Module Mercedes W213 C238 C253 Control Unit ECU A2139008828
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Part no. A1669008506
Seat Module Mercedes W176 W246 Control Unit Front Left Right N/O/S A1669008506
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Part no. A4479000101
Door Module Mercedes Vito W447 Rear Right O/S Door Control Unit A4479000101
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Part no. A9065453001
Mercedes W906 Fuse Box SAM Relay Control Unit Module A9065453001
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Part no. A1635401208
Mercedes-Benz ML-Class W163 Inboard Cable Harness Wiring A1635401208
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Part no. A2118702489
Audio Amplifier Mercedes W211 Audio Gateway Control Unit Module A2118702489
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Part no. A2098200085
Mercedes W209 Convertible Air Module SRS Control Unit ECU A2098200085
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Part no. A1645403072
Mercedes ML W164 Rear Fuse Relay Box Module SRB A1645403072
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Part no. A0345454332
Mercedes-Benz C Class W203 Automatic Gearbox Transmission Control A0345454332
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Part no. A2038201585-1
Mercedes W203 Door Module Control Unit Front Left N/S A2038201585
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Part no. A2661531491
Mercedes W169 A150 M266.920 95HP Engine Control Unit ECU A2661531491 Automatic
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Part no. A2079003600
Mercedes C207 Coupe Module Rear Window Regulator Lifter Control Unit A2079003600
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Part no. A2128205404
Mercedes W212 Front Seat Headrest Display Screen Monitor Unit A2128205404
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Part no. A2028001448
Mercedes W202 Central Locking Vacuum Pump Control Unit A2028001448
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Part no. A2721531291
Mercedes CL203 CLC 350 M272.960 272HP Engine Module ECU Kit A2721531291 2 Keys
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Part no. A6399002900
Mercedes Vito W639 Door Module Front Left N/S Control Unit ECU A6399002900
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Part no. A1695455332
Mercedes W169 PDC Parking Sensor Distance Control Module Unit ECU A1695455332
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Part no. A1779007403
Mercedes W177 Interior Ambiance Control Module ECU Unit A1779007403
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Part no. A2721536979-1
Mercedes W221 S350 M272.965 272HP Engine ECU Kit A2721536979 Ignition + Key
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Part no. A0009060086
Mercedes W205 Control Unit Power Distribution Box Electrical A0009060086
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Part no. A2749000800-3
Mercedes W205 C200 274.920 184HP Engine Control Unit ECU A2749000800
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Part no. A2218230050-1
Mercedes W221 Centre Console Telephone Keypad Control Unit Module A2218230050
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Part no. A6519007500-15
Mercedes W204 C220 CDI 651.911 Engine Control Unit ECU A6519007500 Automatic
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Part no. A2045458201
Mercedes W204 Rear Fuse Box Relay SAM Control Unit Module A2045458201
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Part no. A1669056001-1
Battery Cable Mercedes W176 W246 Negative Lead Wiring Harness A1669056001
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Part no. A4475406353
Mercedes Vito W447 Battery Cable Diesel OM651 Alternator Wiring A4475406353
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Part no. A1645407901
Mercedes V251 Gateway Module Control Unit ECU A1645407901
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Part no. A2129008224
Headlight Control Module Mercedes W207 W212 Unit A2129008224
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Part no. A6461532691-1
Mercedes Vito W639 109 CDI OM646.983 88HP Engine Module ECU Kit A6461532691
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Part no. A6461500400
Mercedes Vito W639 OM646.980 111 CDI 116HP Engine ECU Module A6461500400 Manual
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Part no. A2465409711
Seat Wiring Mercedes C117 W176 W246 Loom Harness Cable Left N/S A2465409711
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Part no. A4475405931
Mercedes Vito W447 Fuse Relay Box Module A4475405931
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Part no. A2079012200
Rain Sensor Mercedes W204 W212 Light Solar Condensation Control Unit A2079012200
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Part no. A1638200726
Mercedes ML W163 Window Windscreen Rain Light Sensor Module A1638200726
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Part no. A0051511301-1
@Starter Motor Mercedes W203 W210 W211 Diesel Engine Actuator MAWS38371
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Part no. A2105400531
Mercedes-Benz E-Class W210 W211 Negative Battery Ground Cable A2105400531
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Part no. A6519007003
Mercedes W176 A200 CDI OM651 136HP Engine Module ECU Unit A6519007003 Automatic
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Part no. A2098206126
Mercedes W209 Convertible Rain Light Sensor Windscreen Module A2098206126
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Part no. A2048709426
Mercedes W204 Air Module Control Unit SRS Sensor ECU A2048709426
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Part no. A6681500033
Engine Wiring Mercedes W168 668942 Diesel Module Loom Harness Cables A6681500033
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Part no. A9065403815
Mercedes Sprinter W906 OM651 Battery Wiring Harness Loom Cable A9065403815
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Part no. A2038201585
Mercedes W203 Door Control Module Front Left N/S A2038201585
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Part no. A1669008512
Mercedes GLE 250 AM Tailgate Trunk Control Module Unit A1669008512
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Part no. A2465403805
Mercedes W176 W245 Front Left N/S Door Wiring Loom Harness A2465403805
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Part no. A2711530691
Mercedes-Benz C W203 C200 Kompressor M271 Engine Control Unit ECU A2711530691
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Part no. A6549001400-1
Mercedes W213 E220 CDI 654.920 194HP Engine ECU Kit A6549001400 Automatic
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Part no. A0009004710
PDC Module Mercedes W205 X253 Parking Sesnor Assist Control Module A0009004710
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Part no. A2049017901-1
Rain Sensor Mercedes SLK R172 W204 Front Windscreen Control Unit A2049017901
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Part no. A0055422118
Yaw Sensor Mercedes R171 W203 W209 ESP Rotation Rate Unit Module A0055422118
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Part no. A2218207510
Mercedes W221 Anti Theft Roof Alarm Ultrasonic Motion Sensor Unit A2218207510
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Part no. A6511504633
Engine Wiring Mercedes W204 W212 OM651 Diesel Harness Loom Cable A6511504633
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Part no. A6421506434-1
Mercedes W251 R 320 CDI 642.950 224HP Engine ECU Kit A6421506434 Keys Lock
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Part no. A6461506372
Mercedes W906 311 CDI 109HP OM646.985 Diesel Engine Control Unit ECU A6461506372
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Part no. A2028207426
Mercedes W202 W208 Anti Theft Alarm Module Control Unit ECU A2028207426
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Part no. A2049007202
Mercedes W204 Navigation Radio CD Player Head Unit A2049007202
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Part no. A2649001000
Mercedes W205 Petrol Engine Alternator Electrical Cable A2649001000
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Part no. A1645402972
Mercedes W164 Fuse Box Holder A1645402972
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Part no. A2129005622
Mercedes W204 Front Fuse Box Relay Control Unit SAM Module A2129005622
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Part no. A0009822223
Mercedes W906 SAM Module Fuse Box Relay Control Unit Regulator A0009822223
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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 .