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. 8574102

BMW F20 F21 F30 F31 F32 Starter Motor Engine Actuator N47N Diesel 8574102

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9296494

BMW F20 F21 F22 F30 F31 F32 Control Unit Airbag Ecu 9296494

PLN 179.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9315897

BMW 3 4 Series F30 F31 F32 Rear Bumper PDC Cables Wiring Loom Set 9315897

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6939287

BMW E60 E61 E63 Air Module ECU Control Unit Centre Vehicle Sensor 6939287

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9359799

BMW i3 I01 F10 F20 F30 LCI KaFAS Camera Speed Control ECU Module Unit 9359799

PLN 112.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7631587

BMW 1 3 X5 Series E53 E81 E87 E90 LCI Battery Mounting Bracket Clamp Bolt Holder

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9286156

BMW X3 F25 Footwell Light Module Control Unit ECU FRM3 9286156

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6980078

BMW E88 Antenna Amplifier Aerial Diversity Module AMP 6980078

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6935597-TS1

BMW E81 E87 Front Rear Parking Sensor PDC Titansilber Silver 354 6935597

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 1440315

BMW X5 Series E53 Wiring Loom Harness Engine Gearbox Module Petrol M62 Automatic

PLN 208.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8586572

Engine Wiring BMW F20 LCI F30 F31 B47 Automatic Gearbox Loom Harness 8586572

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6807487

Fuse Box BMW G20 X3 G01 Power Distribution Control Unit Module Front 6807487

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9861558-1

Rain Sensor BMW F20 F21 F30 F31 Windscreen Light Solar Condensation Unit 9861558

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9142218

BMW X3 E83 LCI PDC Parking Ultrasonic Sensor Silver Grey 9142218 9139866

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9187536

BMW 3 Series E90N E90 LCI ECU Body Control Module H1 61359187536 9187536

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7789225

BMW E65 E66 730d M57N Diesel Cable Starter-Base B+ 7789225

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9214812

BMW E88 E93 LCI Air Module Control Unit ECU 9214812

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9350313

BMW F90 M5 G11 G30 Fuse Box Power Distribution Unit Front Right O/S 9350313

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7188557

BMW F10 S63N Control Unit Fuel Pump 7188557

PLN 1,424.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6923209

BMW X5 E46 E53 Alarm System Inclination Indicator Module Unit 6923209

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6907519-1

BMW 7 SERIES E65 E66 E67 Battery cable plus pole 6907519

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6821139

BMW F10 LCI F20 F21 F30 F31 DAB Bluetooth Head Unit Basic 6821139

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8635815

BMW F20 F30 LCI 118i 318i B38 Gearbox Wiring Loom Harness Cable 8635815

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7521582

BMW E46 E83 E85 Engine Electronics Unit Box Cover Trim 7521582

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9318579

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9318579

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7266666

BMW F11 Touring Control Unit Rear Tailgate Boot Lid Function Module 7266666

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8582280-5

Engine Control Unit BMW F20 F30 F31 118d 318d N47N 143HP ECU DDE 8582280 Manual

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9212916

BMW 5 7 X5 E70 F01 F02 F10 F11 Rain / Light / Solar Fogging Sensor 9212916

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 5A410C5

BMW U06 iX I20 Headlight Headlamp Control Module Unit FLM2 Mid 5A410C5

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6923270

MINI Cooper One R50 R53 Control Unit For Radio Remote Control 433MHZ 6923270

PLN 218.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6970086

BMW 5 6 Series E60 E61 E63 LCI Cable Set Start / Stop Switch Wiring Loom 6970087

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9251722

BMW F20 Front Left Door N/S Wiring Loom Harness Cables 9251715

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6857701

BMW 1 2 3 F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6857701

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9270495

BMW X5 X6 5 6 Series E70 E71 F10 F11 F12 PDC Ultrasonic Sensor Black 9270495

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6938221

BMW 3 Series E90 E91 Wiring Loom Front Door Left Passenger Side 6938221

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 3420482

BMW X3 E83 Ground Earth Cable Battery Wiring 3420482

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8792148

Navigation Headunit BMW F20 F22 F30 Mini F55 F56 Head Unit Basic Media

PLN 569.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8583653-1

Engine Wiring Loom BMW F10 F30 F31 LCI N57N Wiring Harness Glow Module 8583653

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1388277

BMW E39 E46 E60 E61 E83 E90 E91 Switch Glove Box Light

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9289587

BMW 2 X1 Series F45 F48 Radio Antenna Amplifier Suppression Filter 9289587

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9313992

BMW F13 Front Seat Control Module Unit ECU Left Right N/O/S 9313992

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8616810

BMW 1 2 3 4 Series F20 F21 F22 F23 F30 F31 F32 Battery Cable Connecying Line

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6916565

BMW 5 X5 Series E38 E39 E53 Hands-free Electronics Charging Module MOTOROLA

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6824110

BMW 3 F30 LCI 330e Hybrid High Voltage Battery Wiring Loom Harness 6821420

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6791131

BMW F01 ICM Module Integrated Chassis Management QL ES Control Unit 6791131

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8638551

BMW F20 F21 F22 F30 F32 LCI Integrated Supply Module Unit 8638551

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9227181

BMW E90 LCI Body Control Module H1 PL2RR JBBFE IIIR 61359227181 9227181

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6986987

BMW Z4 Series E85 Cable Loom Passenger's Door Wiring Harness 6986987 6986982

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9244189

BMW F20 F21 F30 F31 Telematics Module Bluetooth Combox Telematik ECU 9244189

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7464750

Tailgate Smart Opener BMW F10 F11 X1 F48 X3 F25 Control Unit Module 7464750

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6925966

BMW X3 E83 LCi Rear Right Door Window Lifter With Motor O/S 6925966

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7296108

BMW 4 Series F32 F82 M4 Rear Third Stoplamp Stop Lamp Brake Light White 7296108

PLN 65.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8576333-5

BMW F20 F30 120d 320d N47N 163HP Engine Control Unit ECU DDE 8576333 Manual

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9160189

BMW 1 Series E87 LCI ECU Body Control Module H2 ECU 9160189

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9178791

BMW F01 F02 F10 F11 Cable Wiring Set ARS Valve Block 9178791

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8510221-3

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 CAS3 + Key

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1393415-1

BMW E90 E91 F10 Mini R50 R52 Change Over Contact Relay Grey 5 Pins Set 1393415

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9264973-1

BMW X5 E70 Seat Control Unit Module ECU 9264973

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8580053

Starter Cable BMW G30 G31 G32 Alternator Wiring Starter-Base B+ 8595355

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8517874-8

BMW F20 118d F30 318d N47N 143HP Engine ECU Kit DDE 8517874 + Key + FEM + Lock

PLN 854.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9113348

BMW E81 E87 LCI E90 E91 DC/DC Wandler Torque Converter Module 9113348

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8571905

BMW F20 F21 F22 F30 N47N Diesel Engine Starter Motor 8571905

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9211494

BMW E88 Cabrio Convertible Folding Top Roof ECU Module CVM6 9211494

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6950093

BMW X5 Series E70 Flat Cable Wiring Wire CAS Start Stop 6950093

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9231091

Bluetooth Control BMW E60 E87 E90 Telematics Unit Module 9231091

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9211840

BMW F01 Wiring Loom Cable Harness 9211840

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8373700

BMW E60 E63 E87 E90 E91 Relay Make Contact White Green 8373700

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7798482

BMW E60 E61 Battery Alternator Cable Lead For Preheater System 7798482

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8582279-4

BMW F30 320d ed Diesel N47N 163HP Engine Control Unit ECU DDE 8582279 Manual

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8577238

BMW F30 F31 Sterter Motor Alternator Cable Wiring Loom Harness 8577238

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7075944-2

BMW E60 E65 E70 Front Right Seat O/S Height Adjustment Drive 7075944

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8583575

BMW F07 F10 F11 F12 Diesel N57 Engine Wiring Injection Wiring Harness 8583575

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8632687

BMW i3 I01 Engine Motor Sensors Module Wiring Cable Wire Harness 8632687

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8510832

BMW E90 E91 LCI N47N 318d 143HP Engine Control Unit ECU DDE 8510832 Automatic

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9143823-1

BMW E88 E93 LCI ECU Air Control Unit Module Controller 9143823

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7075943-2

BMW E60 E61 E65 Front Left N/S Seat Height Adjustment Drive 7075943

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8583657

Wiring Harness BMW F20 E90 LCI Mini R56 LCI Engine Glow Plug Module 8583657

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9187541-2

BMW E93 ECU Body Control Module H3 Junction Box 9187541

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6809051

BMW F20 LCI REM Rear Electronic Module Fuse Box Control 6809051

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9188377

BMW F01 KaFAS Camera Front Windscreen Lane Departure Camera Module 9188377

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9319081

BMW F20 F21 F22 F30 F31 F32 Radio Remote Control Receiver 434 MHZ

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6955116-BAQ

BMW 1 3 Series E81 E82 E87 E88 E90 E91 Ultrasonic Sensor PDC Barriquerot 6955116

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9296780

BMW F20 F21 F30 F31 Control Unit Air Conditioning Module 9296780

PLN 55.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6978265

BMW Z4 E85 E86 Roadster Interior Fuse Box 6978265

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7410612

BMW F34 GT Tailgate Lift Module Rear Boot Trunk Lid Control Unit ECU F005V01708

PLN 170.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9134661

BMW E87 E90 E91 E92 Seat Control Unit Module ECU 9134661

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8678968

Engine Wiring Mini F56 F60 BMW F45 F46 Petrol Sensor Module 1 Harness 8678968

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8517862-3

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP ECU Kit DDE 8517862 + Key + FEM

PLN 1,044.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6958525

BMW X5 X6 E60 E61 E70 E71 F07 F10 F11 Seat Adjustment Switch Left N/S 6958525

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8582279

BMW F30 320d ed Diesel N47N 184HP Engine Control Unit ECU DDE 8582279

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8518268

BMW E90 E91 LCI N47N 318d Diesel Engine Control Unit DDE ECU Manual 8518268

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9382401

BMW F30 LCI 330e Hybrid High Voltage Electronics Unit Holder Support 9382401

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6913896

BMW Z4 E85 E86 Aerial Antenna Amplifier Module Rod 6913896

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9335289

BMW F20 Door Cable Harness Wiring Front Right O/S 9335289

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7374942

BMW F20 F21 F30 F31 Fuel Pump Control Unit Module 7374942

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3448250

BMW X3 E83 Front Door Window Lifter Regulator Motor Right O/S 3448250

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6960225

BMW E65 E66 E67 Sensor Vehicle Centre Air Control Unit Module 6960225

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6835155

BMW 1 2 3 Series F40 F44 G20 Radio Antenna Amplifier Suppression Filter 6835155

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8671504-1

Starter BMW G20 G21 G30 G32GT G01 G05 Starter Motor Valeo 8671504

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

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Showing 1189-1287 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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