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.

Automotive electrical systems

At 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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Products in promotion

Part no. 9197177

BMW E82 Footwell Light Module Control Unit ECU NSW PL2 FRM II 9197177

PLN 465.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6986081-2

CD Changer BMW E60 E61 E63 E64 Compact CD Changing Unit 6986081

PLN 161.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7188487

BMW E93 Convertible Battery Mounting Bracket Clamp Bolt Holder Mount 7188487

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6807634

BMW X5 F15 F20 F30 SRS Air Module Bag Control Unit Module ECU 6807634

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8517874

BMW F20 F21 F30 116d 316d Diesel N47N Engine Control Unit ECU DDE 8517874 Manual

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9329703

BMW F20 F21 F30 F31 F32 Rear Body Control Unit Module REM 9329703

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8039828

BMW X5 E70 Rear Bumper PDC Parking Sensor Cables Wiring Harness Loom Set 8039828

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8365960

BMW E38 E39 E53 Battery Crash Disconnection Control Relay 8365960

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8579478

BMW F20 F30 F32 120dX 320dX 420dX Diesel N47N 184HP ECU Unit DDE 8579478 Manual

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8512047-5

BMW E90 E91 LCI N47N 320d ed ECU KIT DDE 8512047 CAS 2 Keys Manual Transmission

PLN 759.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6922528

BMW 5 Series E61 E61N LCI Holder Bracket Additional Battery 6922528

PLN 28.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8368231

BMW E46 Door Speaker Tweeter Front Left N/S 8368231

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7316535-3

BMW F06 F13 Sliding Sunroof Drive Motor Unit Webasto 7316535

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7218339

Control Unit BMW E60 E61 E81 E87 E90 Fuel Pump ECU 7218339

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8572129

BMW 2 3 Series F22 F30 Diesel N47N Wiring Loom Harness Engine Module 8507896

PLN 170.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7457873

BMW F20 F21 F30 LCI Headlight Control Unit Module FLE2 7457873

PLN 398.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9372556

BMW G11 Door Wiring Harness Rear Left Right Door N/O/S Wiring Loom 9372556

PLN 108.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9134666

Seat Module BMW E87 E90 E91 E92 Control Unit ECU 9134666

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5A323C8

BMW F40 Fuse Relay Power Distribution Box Unit 5A323C8

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6942675

BMW 3 Z4 Series E46 E89 Mini R50 R52 Parking Control Module Unit PDC 6942675

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6926472

BMW E65 E66 E67 Phone Transmitter Receiver Module ECU SIEMENS 6926472

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9304728

PDC Wiring BMW X3 F25 Front Bumper Loom Cable Harness Parking Sensors 9304728

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9253637

BMW 3 5 Series F10 F11 F30 F31 Airbag Control Unit Module 9253637 65779253637

PLN 89.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6980020

BMW E63 E64 Rain Light Sensor Control Unit Module HUD 6980020

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8518568

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP Engine Control ECU DDE 8518568

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6962678

BMW E81 E87 E91 Switch Cluster Steering Column Wiper Stalk 6962678

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9383694

BMW F10 Footwell Light Module Control Unit ECU TEMIC 9383694

PLN 298.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9237047

BMW E60 E87 E90 CAS 3 ECU Control Unit Key Reading Module 9237047

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6957114

BMW 3 Series E92 Front Right O/S Driver Side Door Wire Wiring Loom 6957111

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9177985

BMW E88 ECU Body Control Module H3 Junction Box 9177985

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6958447

BMW 7 Series E65 Control Unit Door Rear Passenger Side Hinten Low BFT 6958447

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9317119

BMW F01 F02 F04 F25 Amplifier Unit Top Hifi Audio 9317119

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9176878

BMW E81 Body Control Module Unit BCM ECU L2 9176878

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6938504

Battery Cable BMW E90 E91 E92 E93 Positive Lead Battery Wiring Harness 6938504

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8506199-2

BMW E60 E61 LCI 520d N47 Diesel Engine ECU Kit DDE CAS3 + Key 8506199

PLN 1,092.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9339339

BMW 1 3 F20 F21 F30 F31 Driver Side Seat Wiring Loom Cable Harness 9339339

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8510829-5

BMW E90 E91 LCI N47N 320d ECU KIT DDE 8510829 CAS3 + Key Manual

PLN 313.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8586569

BMW F20 F21 F30 F31 LCI Gearbox Transmission Harness Wiring Loom Cable 8586569

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8514735

BMW F20 F21 116d ed N47N 116HP Engine Control Unit Module ECU DDE 8514735 Manual

PLN 712.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9223682

BMW X5 X6 Series E70 E71 Dashboard Onboard Monitor Display Screen 8,8" 9223682

PLN 303.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9175902

BMW 5 Series E60 E61 Rear Left Right Door N/O/S Wiring Cable Harness 9175887

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8678974

Engine Cable BMW F40 X1 F48 Mini F55 F56 Injector Wiring Loom Harness 8678974

PLN 170.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9286789

BMW E88 ECU Body Control Module H4 Junction Box PL2RR JBBFE IIIR 9286789

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6799576

BMW F10 F11 ICM Control Module Unit 6799576

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8809737

PDC Wiring BMW X4M F98 G02 Rear Bumper Parking Assistance Sensor Harness 8809737

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8577764-1

BMW F10 F11 520d Diesel N47N 184HP ECU Kit DDE 8577764 + Key + CAS4 Automatic

PLN 1,168.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6825538

Comfort Module Unit BMW F20 F21 F30 F31 F32 Body Control FEM ECU LR01 6825538

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9341546

BMW F40 G20 G30 Accelerating Sensor 9341546

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 5A0BD89

BMW F40 Power Distribution Fuse Box LIN Control Unit Module 5A0BD89

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8605458

Wiring BMW X1 E84 F11 N20 Engine Sensor System Module Wiring Harness 8605458

PLN 378.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8506374-3

BMW E81 E87 E90 LCI 120d 320d N47 ECU Kit DDE 8506374 CAS3 + Key Manual

PLN 949.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9241826

On Board Screen BMW F10 F11 Central Information Display Monitor 10,25" 9241826

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8363668

BMW X3 X5 Series E53 E83 Steering Column Turn Indicator Switch Stalk 8363668

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6864923

Air Module BMW F01 F02 LCI F07 GT F10 F11 F13 ECU Control Unit 6864923

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6966925

BMW E60 E90 Dashboard Onboard Monitor Display Screen 8.8" 6966925

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7841705

BMW E60 M5 E63 E64 M6 V10 S85 Hall Sensor 7836160

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9339192

BMW F45 F46 Battery Cable Positive Wire Lead Terminal 9339192

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9124585

BMW 1 3 Series E87 E90 Front Rear PDC Ultrasonic Parking Sensor Sedonarot Red

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9289385

BMW F10 F34 GT Telematics Module Bluetooth Telematik Control Unit 9289385

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6777641-2

BMW X5 E70 E81 E87 E90 E91 E92 E93 Air Module Wiring Steering Wheel Loom 6777641

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7823731

BMW E84 E90 E91 LCI 320xd N47 Cable Alternator Starter Base B

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9221713

BMW F01 Front Bumper PDC Wiring Loom Cable Harness F02 9221713 9221712

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8630168

BMW 3 F30 LCI 330e Hybrid Charging Control Unit Bracket Holder Mount 8630168

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9257009

BMW F01 F10 CIC Professional Unit Sat Nav Infotainment DAB Radio Player 9257009

PLN 949.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9303594

BMW Z4 E89 Anti Theft Alarm System Module Control Unit DWA 9303594

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9362848

BMW 1 3 Series F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module

PLN 275.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8605456

Engine Wiring BMW F21 F30 LCI F36 N20 Loom Module Harness Cable 8605456

PLN 180.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9324784

BMW F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9324784

PLN 170.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9228323

BMW F01 F10 F20 F30 F32 Camera Module Reversing Rear View Control Unit 9228323

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9267511

BMW X5 E70 Body Control Module Main Primary ECU Unit JBBFEIII R LP 9267511

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7317408

BMW F10 F11 LCI F30 F31 Xenon Headlight Ballast Control Unit 7317408

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7428425-3

Headlight Module BMW F20 F21 LCI Front Lamp Hedlamp LED Control Unit 7428425

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8580059

Mini F56 F60 BMW F40 F39 Diesel B37 Battery Starter Alternator Wiring 8580059

PLN 70.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7839665

BMW E90 E92 E93 LCI M3 S65 Cable Alternator Starter Wiring 7839665

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6936996

BMW E65 Light Control Unit Headlight Module Lear LM E6X MAN. LWR 6936996

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9221861

BMW E90 E91 E93 LCI Front Left Right N/O/S Seat Control Module ECU 9221861

PLN 151.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6886185

ICM Module BMW F20 F21 F30 F31 Crash Control Unit Airbag ECU 6886185 0265020864

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9280186-1

BMW F10 F11 F30 F01 F02 LCI Air Control Module ECU Unit 9280186

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6887358

BMW F10 F11 EMF Module Parking Brake Unit Electric Control 6863800

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7174403-5

BMW E92 Coupe Rear Light Lamp Plug Socket Wiring Left N/S 6984754

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9197177-1

BMW 1 Series E88 Cabrio Footwell Light Module Control Unit ECU NSW 9197177

PLN 170.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9225022

BMW 2 3 4 Series F22 F30 F31 F32 Battery Power B+ Distribution Box 9225022

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9228495

BMW F07 GT ECU Body Control Module Junction Box V12 PL2 JBBFE III 9228495

PLN 127.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6885215

BMW F90 M5 F91 M8 G05 G11 G30 Steering Column Control Unit Module 6885215

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6946400

BMW E60 E61 Air Module ECU Control Unit Centre Sensor 6946400 6963024 6952993

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8636054

BMW F20 F30 LCI 120i 320i 330i B48 Engine Wiring Cable Loom Harness 8636054

PLN 712.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9343687

BMW F01 LCI F07 F10 F11 F25 Safety Control Unit Air Module Bag ECU 9343687

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8379766

BMW E65 E90 E91 E92 E93 Auto Boot Release Switch Tailgate 8379766

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8572439-3

Engine Control Unit BMW F30 F31 N57N 330d 258HP ECU DDE 8572439 Automatic

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6926460

AUC Sensor BMW E60 E61 E65 X5 E70 X6 E71 Mini R56 R57 Air Control 9136607

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6824108

BMW F30 LCI 330e Hybrid High Voltage EDH Wiring Cable Wire 6824108

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8482365

BMW G20 Installation Cable Wiring Loom 8482365

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9267465

BMW F01 Body Control Module ECU Junction Box V5 PL6 JBBFE III Lear 9267465

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6763735

BMW X5 E60 E81 E87 E90 E91 E92 Xenon Headlight Level Sensor

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8586540-5

BMW F30 F32 LCI 330d 430d N57N 258HP Control Unit ECU Kit DDE 8586540 FEM Key

PLN 1,495.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9159310

BMW F10 Central Sensor LOW 9159310

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7514342

BMW E34 Z4 E85 Base B Terminal Point Engine Compartment 7514342

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6928523

BMW 3 Series E46 M47N Diesel Negative Earth Cable Battery 6928523

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9146244

BMW X3 X5 Series E53 E83 Control Unit Sliding Lifting Roof Panorama 9146244

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

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Showing 1882-1980 of 4686 products

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 .

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