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. 8617551-5

BMW F20 F21 125i N20 218HP ECU Control Unit Kit DDE 8617551 Key FEM Automatic

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9130047

BMW 3 4 5 Series E92 F32 E61 LCPA Seat Belt Module ECU

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9210148

BMW F20 F30 Central Bass Speaker Stereo Subwoofer Right O/S 9210148

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 2447799

BMW M6 F13 X3 F25 F32 F33 Bluetooth Telematic Control Module Unit 2447799

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8507885

BMW 1 3 Series F20 F30 Diesel N47N Wiring Harness Engine Gearbox Module 8507885

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7253188

BMW E92 Sport Seat Left Right Thigh Support Cover Trim Leather Dakota

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1388911-3

BMW E36 E38 E85 Mini R52 R57 5x Change-Over Contact Relay Violet Set 1388911

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9301309

Air Conditioning Unit BMW F20 F21 F30 F31 Control Unit A/C Module 9301309

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9284594

BMW 1 2 Series F20 F21 F30 F30 Mini F56 Front Seat Sensor Mat Left N/S 9284594

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9124585-SED1

BMW E87 E90 PDC Parking Sensor Ultrasonic Set x4 Sedona Rot - A79

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9186655

BMW 3 Series E92 Front Right O/S Driver Side Door Wire Wiring Loom 9186655

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9374510

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9374510

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9383176

BMW F20 F30 F34 BCM FEM BSI Body Control Module Unit 9383176

PLN 370.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8631634

BMW X5 F15 Earth Ground Cable Negative Battery Lead Wiring 8631634

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8638585

BMW F20 F21 F30 F31 LCI Cable Alternator-Starter-Base B+ 8638585

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9263800

BMW E90 LCI ECU Footwell Light Module FRM3R Rear Led Basis 9263800

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7843338

Engine Wiring BMW F10 M5 F13 M6 Valvetronic Servomotor Cable Loom 7843338

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9270356-2

Fuse Carrier BMW F40 Mini F55 F56 F57 F60 Distribution Box 9270356

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7801158

BMW 3 5 X5 Series E60 N E70 E90 F30 Exhaust Lambda Probe Oxygen Sensor 7801158

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9289590

BMW X5 X6 E70 E71 Antenna Amplifier Module Trap Circuit 9289590

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7848603

Alternator BMW F87 M2 F80 M3 F82 F83 M4 S55 Engine Generator 250A Denso 7848603

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3405815

BMW X3 Series E83 E83N Inclination Indicator Alarm System 65753405815 3405815

PLN 18.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7848265

BMW F87 M2 F80 M3 F82 F83 M4 S55 Engine Wiring Loom Module Harness Cable 7848265

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9317173

BMW F20 F21 F30 F31 REM Rear Electronic Module Fuse Box Control Unit V1 9317173

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7939168

Rain Sensor BMW F20 F21 F30 F31 Windscreen Light Solar Condensation Unit 7939168

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9225825

BMW E81 E84 E87 E90 E91 PDC Module Parking Control Unit 9225825

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9247081

BMW X1 E84 Wiring Loom Harness Passenger Side 9247081

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7633242

BMW F10 F20 F30 Integrated Relay Power Supply Module Distribution Box 7633242

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9299335

BMW F01 F02 F07 F10 F11 CAS4 Control Unit Key Reading Module 9299335

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9365833

Business Navigation BMW F20 F21 F30 F31 Sat Nav Head Unit Player 9365833

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7243562

BMW F20 F30 Sport Seat Front Heating Mat Element F21 F31 F32 7243562

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8378113

BMW Z4 Series E85 E86 Interior Fuse Box 8378113

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8579482

BMW F20 F21 116d ed Diesel N47N 116HP Engine Control ECU DDE 8579482 Manual

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9491419

BMW F45 F48 F15 F31 F36 Mini F60 Trunk Lid Automatic Lift Control Module 9491419

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6954298

BMW E81 E87 E90 E91 Adapter Lead Medium Range Loud Speakers 6954298

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9197127

BMW X3 E83 Z4 E85 E86 Radio Business CD Player Multimedia Unit 9197127

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1439559

BMW X5 Series E53 Battery Cable Plus Pole 1439559

PLN 28.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 918545-102

BMW F11 Wiring Cable Loom 918545-102 767832-113

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9369124

BMW F10 F20 F30 Front Seat Control Unit Module Memory 9280913

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9280186

BMW 5 7 Series F10 F11 F01 F02 F03 LCI Airbag Control Module ECU Unit 9280186

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6921982

BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver Side

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8377601

BMW E38 Door Windows Control Unit Module ECU ZB PMBT LOW 8377601

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9226885

BMW F20 F21 Aerial Antenna Amplifier Diversity DAB 9226885

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6956750

BMW E87 Control Unit PDC Parking Sensor Module Nautikblau Blue - A21 6956750

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7545142

BMW Z4 Series E85 N52 Roadster Cable Alternator Starter Base B+ 7545142

PLN 65.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8573260-8

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 + Key + FEM Manual

PLN 1,709.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9291387

BMW X5 E70 X6 E71 Side View Camera Top Rear Control Unit Module 9291387

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9319918

Adapter Lead Wire BMW F45 F46 X1 F48 Cable Active Air Flap Control 9319918

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9345373

BMW F10 Footwell Central Lock Gateway Control Module Unit ECU 9345373

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9322532

Gateway Module BMW F01 F10 F11 F12 Central Body Control 9244262

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6850955

Brake Control Unit BMW F10 F11 X3 F25 Parking Brake Handbrake Module EMF 6850955

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7316535

BMW F20 F22 F30 Sliding Sunroof Drive Motor Unit Webasto 7193398

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6970908

BMW E65 E66 Sensor Front Right Door Airbag O/S 6970908

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6957761

BMW 5 6 Series E60 E61 E63 Passenger Door Airbag Control Module 6957761

PLN 28.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7808257

BMW E90 E91 LCI F10 Wiring Harness Engine Glow Module N57 7808257

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8621486

BMW F20 F21 LCI F36 F87 M2 N55 Cable Alternator Starter Base B Wiring 8621486

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9264917

BMW Z4 E89 Roadster Air Module Control Unit ECU 9264917

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7804110

BMW 5 Series F10 F11 LCI Earth Cable Battery Cable 7804110

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9186215-1

BMW E90 M-Audio Controller System Control Unit Module Navigation 9186215

PLN 522.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5A243F5-1

Ultrasonic Sensor BMW F70 G60 U06 Rear Parking PDC Set Portimao Blue - C31

PLN 522.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9264573

BMW 3 Series E91 LCI ECU Body Control Module Junction Box H2 9264573

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8510591

BMW E60 E87 E90 LCI 120d 320d 520d N47 Engine ECU DDE 8510591 Manual

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9389069

BMW F20 F21 F30 F31 F32 X5 F15 X6 F16 Power Distribution Fuse Box Front 9389069

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9270392-1

BMW F20 F21 F22 Central Information Display Screen 6,5" 9270392

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9227470

BMW 1 Series F20 F21 LCI Antenna Aerial Noise Suppression Filter 9227470

PLN 28.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8494948

BMW F40 F44 F48 Mini F54 Rear Tailgate Smart Opener Top Wire Sensor 8494948

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3421562

Engine Wiring Harness BMW X3 E83 2.0i N46 Wiring Loom Manual Gearbox 3421562

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8482940

BMW F30 LCI G11 G30 Battery Cell Supervision Circuit Module Unit 8667593

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9196935

Seat Module BMW X1 E84 E87 E90 E91 Seating Control Unit ECU 9196935

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6878191

Air Module BMW F01 F02 LCI F10 F11 F13 ECU ICM Control Unit 6878191

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9317174

BMW F30 REM Rear Electronic Module Fuse Box Control Unit V2 9317174

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9311849

BMW F20 F21 Air Conditioning A/C Climate Control Unit Module ECU 9311849

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9221462

BMW F01 Front Seat Control Unit Module ECU Left Temic 9221462

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6947786

BMW E60 E61 E63 E64 Steering Column Adjuster Switch 6947786

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9244161

BMW F01 F02 F03 F04 Head Unit Radio Media Player Navigation 9244161

PLN 902.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6920469

BMW E65 E66 E67 Sensor A-pillar Right Airbag 65776920469 6920469

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7608801

Valve Cable BMW F20 F21 F30 F31 Petrol N13 Valve Tronic Wiring Harness 7608801

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9217033

Battery Cable BMW F01 F02 Positive Wiring Plus Pole Red 9217033

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9178962

BMW X5 X6 E70 E71 Power Distribution Fuse Box Battery 9178959

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9382417

BMW 1 2 3 5 F10 F20 F23 F30 Bluetooth Teleservices GPS Telematics Module 9382417

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9116801

Hands Free Module BMW E60 E90 Everest Motorola Non GPS Phone 9116801

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9261604

Rear Bumper PDC BMW F20 F21 F22 Ultrasonic Sensor Tiefseeblau Deep Sea Blue A76

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7599881-4

BMW E81 E87 LCI 116i 2.0 Engine Petrol N43 ECU Kit DME 7599881 CAS3 Key

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9286236

BMW F30 Door Wiring Front Passenger Door Loom Cables Harness F31 9286236

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9280185

Air Module BMW F10 F11 F01 F02 F03 LCI Control Unit ECU 9280185

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6862756

BMW F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6862756

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9298962

BMW F20 F21 F22 F30 F31 F32 F33 F80 M3 Body Control Unit Module REM V5 9298962

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9201989

BMW X3 X5 X6 E60 E61 LCI E70 E71 F01 F02 F25 Rain Light Solar Sensor

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7809999-3

BMW X3 E83 LCI 1.8sd 2.0sd N47 177HP Engine Control Unit ECU DDE 7809999 Manual

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6929715

BMW 1 Series E81 E87 E87N Positive Battery Lead Cable 61126929715 6929715

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9145401

BMW 5 Series E60 E60N E61 E61N LCI Airbag ECU Control Unit Module

PLN 23.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7559811

Earth Ground Cable BMW E60 E61 E63 N62N 540i 550i 650i Battery Starter Wiring

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9153135

BMW F01 F02 F03 Holder Bracket Control Unit Amplifier 9153135

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8605144

BMW F20 F21 LCI F23 F30 F32 F33 Engine Wiring Loom Harness Cable 8605144

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9243212

BMW F10 Light Module Control Unit ECU Lear ZGW-02 Mid Plus 9243212

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8582280-4

BMW F20 116d N47N 116HP Engine Control ECU DDE 8582280 Automatic Transmission

PLN 854.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6942990

BMW 5 6 Series E60 E61 E63 E64 Actuator Air Distribution Flap Matrix Heater

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7795779

BMW 5 Series E60 E61 Cable Alternator Starter Base B 520d Diesel M47N2 7795779

PLN 46.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9180402

BMW E90 Front Sport Seat Lumbar Wiring Loom Harness Cable 9180402

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

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Showing 1981-2079 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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