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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Part no. 8602802

BMW i3 I01 Hybrid Rex Engine Wiring Cable Harness Bracket Mount Trim 8602802

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9425925

BMW F30 LCI G20 G30 Hybrid Fuel Tank Control Unit Module Unit 7452591

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9315150

BMW X3 F25 Front Distribution Box Fuse Box Power Control Unit 9315150

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9277818

Antenna Amplifier BMW F23 Cabrio FM Radio Booster Unit Module 9277818

PLN 51.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6960221

Airbag Module BMW E65 E66 Sensor B-pillar Left N/S Control Unit Air Bag 6960221

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9183233

BMW E60 E61 LCI Centre Console Switch Cluster Control Unit ECU Module 9183233

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9257098

BMW F10 F11 F20 F21 F22 F30 F31 Front Seat Control Module ECU 9257098

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9337881

BMW 1 3 4 F20 F21 F30 F31 F32 Power Distribution Fuse Box Rear 9337881

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6887752

ICM Air Module BMW F20 F21 F22 F30 F31 Control Unit ECU 6887752

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8518269-6

BMW E90 E91 LCI N47N 320d 184HP ECU KIT DDE CAS 3 Key 8518269 Manual

PLN 712.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6927000

BMW E63 E64 Amplifier Holder Catch Bracket Video Module 6927000

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9365305

BMW F20 F21 F22 F30 Telematics Comunication Control Module Unit ECU 9365305

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7616200

Battery Cable BMW E90 E91 E92 E93 Wiring Negative Minus Pole IBS 7616200

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9167202

BMW E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9167202

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7798875

BMW X5 Series E70 LCI Ventilation Grommet Unit Box Cover 7798875

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9286943

BMW 5 F11 Touring Body Control Module ECU Junction Box V7 PL6 JBBFE III 9286943

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9207360

BMW E60 E87 LCI E90 Hands-free Bluetooth High Basis MULF2 9207360

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9225830

BMW F07 Right O/S Central Bass Loud Speaker Stereo System Unit 9164582

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7823344

BMW F20 F21 F30 F31 F32 F33 Alternator Generator 150A N47N Diesel 8519890

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6934095

BMW 7 Series E65 E66 Door Wiring Harness Rear Right Left N/O/S

PLN 28.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8387541

BMW X5 E39 E53 Fuse Box Housing 8 Fold Voltage Regulator Boot 8387541

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8576341-6

BMW F20 F21 F30 F31 116d 316d 116HP N47N ECU Kit DDE 8576341 + Key + FEM Manual

PLN 1,044.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6929345

BMW 1 3 Series E82 E90 E92 Roof Antenna Aerial Shark Fin GPS Radio Tel 6929345

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6926459

BMW X1 E81 E82 E84 E87 E88 E90 E91 E92 Climate Control Solar Sensor 6926459

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9163173

BMW E60 E61 LCi Right Left Rear Door Wiring Loom N/O/S 9120797

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9286249

BMW 3 Series F30 F31 Rear Door Wiring Loom Cable Harness 9286249

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8377658

BMW X5 SERIES E53 TV amplifier 8377658

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9337807

Door Speaker BMW F15 F16 Front Rear Loudspeaker HiFi Audio Speaker 9337807

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7804127

BMW E60 E61 LCI 520d Cable Alternator Starter Base B 7804127

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9226884

BMW F20 F21 LCI Antenna Amplifier Diversity 9226884

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9247467-1

BMW E92 LCI Body Control Module Unit PL2RR JBBFE L1 61359247467 9247467

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7799470

Wiring Bracket BMW E60 E61 X3 E83 Diesel Engine Harness Cable Loom Mount 7799470

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9264573-2

BMW X1 E84 ECU Body Control Module Unit Junction Box H2 PL2RR JBBFE IIIR 9264573

PLN 122.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6929347

BMW 1 3 Series E82 E90 E92 Roof Antenna Aerial Shark Fin 6929347 6950704

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7835131

BMW E60 E61 LCI M5 E63 M6 Fuel Injection System Adapter Lead 7835131

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6938975

BMW E60 E61 E63 E64 6-disc Compact CD Changer 6938975

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9231515

BMW F31 Rear Antenna Aerial Amplifier AM/FM DAB 9231515

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8091664

Baterry Cable Bracket BMW X3M F97 X4M F98 S58 Alternator Wire Holder 8091664

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9267466

BMW F10 Body Control Module Junction Box V2 PL2 JBBFE III Lear ECU 9267466

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6807633

Control Unit BMW F01 F07 F10 F11 F25 Air Module ECU Unit Continental 6807633

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3404975

BMW X3 Series E83 E83N LCI Solar Sun Light Sensor 3404975

PLN 18.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6951368

BMW X5 E70 Amplifier Holder Audio Catch Bracket Trim Panel 6951368

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9394665

BMW F10 Footwell Light Module Control Unit ECU 9394665

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7848469

BMW F80 M3 F82 F83 M4 Wiring Harness Engine Gearbox Module 7848469

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9242204

Wiring BMW F12 F13 F06 Cable Set For Electric Parking Brake Handbrake 9242204

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8781328

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 8781328

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6935600

BMW E81 E82 E87 E90 E91 PDC Parking Ultrasonic Sensor Sonora Metallic 6935600

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8583653

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

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9242072

BMW X6 E71 Door Wiring Harness Loom Cables Driver's Side 9242072

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9462544

BMW F20 F30 F31 Mini F55 F56 F60 Control Unit Air Conditioning Module 9462544

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9140942-BAR

BMW 1 3 Series E87 E90 E91 LCI Rear PDC Ultrasonic Parking Sensor Barbera Red

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7551559

BMW E60 E61 E63 E64 Ground Cable Alternator Petrol 7551559

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6964140

BMW 7 Series E65 E66 Control Unit Door Rear Passenger Side 6933264

PLN 18.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8506442

BMW E81 E82 E87 LCI E88 123d Petrol N47S 204HP ECU Engine DDE 8506442 Manual

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8576341-7

BMW F20 F21 F30 F31 116d 316d 116HP N47N ECU Kit DDE 8576341 + Key + FEM

PLN 854.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6958525-1

BMW 5 X5 X6 Series 1 E60 E61 E70 F07 F10 F11 Seat Adjustment Switch Left N/S

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9266838

BMW X3 F15 Can Bus Interface 120Ohm Control Module Unit ECU 9266838

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9231320

Dashboard Monitor BMW X3 F25 X4 F26 Onboard Central Display Screen 9231320

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7199885

BMW E93 Cabrio Convertible Folding Top Roof ECU Module CTM 7199885 7199882

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9315130

Door Wiring Harness BMW F25 Rear Left Right Door N/O/S Wiring Loom 9315130

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9389070

BMW F20 F30 LCI REM Electric Power Distribution Fuse Box Control 9389070

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8506444-1

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8506444 CAS3 + Key

PLN 1,139.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8843416

BMW G30 Battery Cell Module Supervision Circuit Control Unit 8843416

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9188582

BMW X3 F25 Holder Audio Amplifier Telephone Bracket Mount Trim 9188582

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6964141

BMW 7 Series E65 E66 E67 Control Unit Module Door Front Driver Side 6964141

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7514610

Injection Valve Wiring BMW E60 E61 E65 N62 N62N Ignition Loom Harness 7514610

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9293309

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9293309

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7273667

BMW F30 F31 F32 Rear Tailgate Smart Opener Lower Antenna 7273667

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9225707

On-Board Screen BMW F10 F11 Central Information Display Monitor 10,25" 9227561

PLN 341.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8511409

BMW F10 F11 N57N Control Unit Module Box Cover Bracket Carrier Mount 8511409

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6934021

BMW 7 Series E65 E66 Front Left Right Door N/O/S Wiring Loom Harness 6920291

PLN 18.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6863433

BMW F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6863433

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6910719

BMW Z4 E85 E86 CD-Changer Bracket Left N/S Holder Mount Carrier 6910719

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7520912

BMW E60 E61 E63 E64 LCI Cover Electronic Box 7520912

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6906914

BMW X5 E53 Battery Cable Negative Wire 6919976

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9164352-1

BMW E90 E91 E92 IBS Negative Minus Battery Lead Cable Wire 9164352

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4752820

Positive Cable BMW F20 F21 Under Bonnet Battery Wiring Loom 4752820

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9225824

PDC Module BMW E81 E82 E87 E90 E91 E92 Parking Distance Control Unit 9225824

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9346273

BMW F15 Kafas Camera Lane Assist Module Control Unit ECU 9346273

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1439740

BMW X5 E53 Cable Starter-Base B Electrical Cable Wiring 3.0i M54 Petrol 1439740

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9399247

BMW F20 F30 F31 F32 ECU Camera Module Based Drive Support

PLN 112.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8586571

BMW 1 3 F20 F30 LCI B47 Engine Gearbox Module Wiring Cable Loom Harness 8586571

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7592511

BMW E88 E90 E91 E92 LCI F20 F21 F30 Ignition Wiring N55 Engine Harness 7592511

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6963014

BMW E60 E61 E63 Passenger Side Door Air Module Control Unit ECU 6963014

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9166667

BMW X5 E70 Footwell ECU Light Control Unit Module FRM II Lear 9166667

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6902285

BMW E39 E87 E90 E91 Trigger Contact PDC Sensor Tweeter Gong 6902285

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6933529

BMW 5 Series E60 E61 Centre Console Switch Centre DSC 6933529

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6922211

BMW E81 E87 E90 E60 Mini R55 R56 R57 Interior Aerial Comfort Access 6922211

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9391253

BMW F10 F11 Wiring Cable Loom 9391253 9391252

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7624621

BMW X1 F84 Starter Wiring Battery Alternator Cable Harness Loom 7624621

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9226901

Body Control Module BMW F01 ECU Junction Box PL6 JBBFE III 3 Lear 9226901

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9438731

BMW F20 F21 F22 F30 F31 F32 F36 Body Control Module Unit FEM LR01 9438731

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9168335

BMW X1 E84 Antenna Amplifier Diversity 868 MHZ 9168335

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6871062

BMW F01 F07 F10 F12 VDC Module Rear Suspension Level Control Unit 6871062

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7835872

BMW 5 Series E60 E63 E64 Carrier Holder Amplifier/Video Module Fairing EDC

PLN 17.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8586573

BMW F20 F30 LCI Wiring Harness Engine Gearbox Module 120dX 320dX B47 8586573

PLN 712.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9200943

BMW 1 3 Series E81 E87 E90 E91 E92 Ultra Sonic Alarm System Module 9200943

PLN 28.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8584276

BMW F30 F31 320d Engine Control Unit ECU DDE ed Diesel N47N 163HP 8584276

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

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

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Showing 1783-1881 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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