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. 9371130

BMW F30 Seat Control Unit Seat Module Unit Controller ECU 9371130

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9308373

BMW X6 E71 Footwell Light Control Unit Module FRM3R LEAR 9308373

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7296090

BMW Z4 F30 F31 E89 Headlight Ballast Control Unit Xenon Light 7296090

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9266328

ICM Module BMW F07 GT F01 F02 F03 F04 Air Module Control Unit ECU 9266328

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6929556

BMW E65 E66 Driver's Seat Air Module Sensor Control Unit Module 6929556

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8657337

Starter Motor BMW F90 M5 G11 G30 Petrol Engine Starter Actuator DENSO 8657337

PLN 569.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9244422

BMW X5 E70 LCI Front Bumper PDC Loom Cables Wiring Set 9244422

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9228491

BMW 5 Series F10 ECU Body Control Module V2 Junction Box 61359228491 9228491

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9233009

BMW F33 F83 M4 Convertible DWA-Alarm System Module Unit ECU 9233009

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6911519

BMW E65 E66 E67 Wiper Switch Stalk Steering Column Wheel 6911519

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7075907

BMW Z4 E85 Left N/S Contact Bush 7075907

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8657232

Engine Wiring BMW F87 M2 N55 Petrol Loom Module Harness Cable 8657232

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6821135

BMW F20 F21 F22 F30 F31 Head Unit Media DAB Navigation Business Headunit 6821135

PLN 569.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9286953

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 9286953

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9153418

BMW F10 F11 B Plus Distributor Front Battery Cable 9153418

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9263800-1

BMW E91 LCI ECU Footwell Light Module FRM3R Lear Led Basis 9263800

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9281068

Antenna Receiver BMW F33 F83 M4 Convertible Aerial DAB Unit 9281068

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3453587

BMW X3 E83 LCI N47 Diesel Cable Alternator Starter Base B 3453587

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9243637

BMW X3 F25 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 9243637

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7599881-5

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

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8576333

BMW F20 F30 F32 120d 320d 420d N47N 184HP Engine Unit ECU DDE 8576333 Automatic

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9231280-TS

BMW F07 Parking Module PDC Distance Control Unit Sensor Titan Silver - 354

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9181463

BMW 1 X4 X5 Series F20 F21 F25 F26 Antenna Aerial Diversity Trap Circuit 9181463

PLN 51.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7856817

BMW F90 M5 F91 M8 Battery Cable Wire Lead Positive Alternator Starter B+ 7856817

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9329701

BCM Module BMW F20 F21 F30 F31 F32 Body Control Unit Module REM V2 9329701

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8515494

BMW 5 Series F10 F11 530d N57N Cable Alternator Starter Base B+ 8515494

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8512047

BMW E90 E91 LCI N47N 320d ed ECU KIT DDE CAS 3 Key 8512047 Manual

PLN 759.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7624412

BMW 1 3 Series F20 F21 F30 Cable Alternator Starter Base B Wire 7624412

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7566525

BMW E82 E90 135i 335i N54 Engine Gearbox Wiring Loom Harness Cables 7566525

PLN 360.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9298945

BMW X1 E84 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9298945

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8798189-1

Basic Head Unit BMW F45 X1 F48 Mini F55 F56 Sat Navigation Radio Stereo 8798189

PLN 807.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9835622

BMW X4 F98 G02 Active Sound Design Module Control Unit Harman Kardon 9835622

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6956939-1

Changer Unit BMW E63 E64 6-disc Compact CD Head Player 6956939

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6919905

BMW X5 Series E53 PDC Parking Control Module Unit PDC 6919905

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8601245

Earth Ground Cable BMW i3 I01 Hybrid Rex Electric Engine Wiring 8601245

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9264568

BMW E92 LCI Body Control Module Unit PL2RR JBBFE IIIR L1 9264568

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9134631

Seat Module BMW E65 E66 Front Seat Control Unit ECU 9134631

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6778809

Mini Cooper One R55 R56 R57 Xenon Headlight Level Sensor 6778809

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6938217

BMW 3 Series E90 E91 Wiring Loom Cable Front Door Left Passenger Side 6938217

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9193745

BMW 3 5 E60 E61 E90 LCI Display Screen 8.8" Monitor Sat Nav 9193745

PLN 378.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9210105

BMW 5 Series F07 GT Gran Turismo Door Wiring Loom Cable Harness 9210105

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8507981

BMW F07 GT F10 F11 Engine Wiring Loom Harness Cables M57Z Diesel 8507981

PLN 854.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7621178-5

BMW E81 E87 LCI E90 N43 118i 318i Engine Control ECU DME Kit 7621178 Automatic

PLN 1,424.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6799887

Crash Module BMW F01 F02 LCI F10 F11 F13 ICM Control Unit ECU 6799887

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6934002

BMW 7 SERIES E65 E66 Door Wiring Harness Mod Carrier Front Left N/S 6934002

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9117831

Negative Battery Lead BMW F45 F46 X1 F48 IBS Minus Pole Cable 9117831

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8632692

BMW X5 F15 N20 Petrol Wiring Harness Transmission Gearbox Module Cable 8632692

PLN 712.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9170732

BMW X5 E70 CCC Navigation System CD Player Sat Nav Head Unit 9170732

PLN 1,614.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6826326

BMW F40 G05 G20 G30 Shark Roof Fin Antenna Aerial Module Unit 6826326

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6970904

BMW 7 Series E65 E66 E67 Sensor Rear Seat Airbag 65776970904 6970904

PLN 46.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6983335-1

BMW E39 E46 E53 6-disc CD Multi Changer Control Unit Modul With Magazine 6983335

PLN 218.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9188877

BMW F01 F02 F03 F10 F11 Steering Column Adjuster Switch 9188877

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6954007

BMW E60 E61 E63 E64 E65 PDC Parking Control Module Unit ECU 6978232

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9287433

BMW F21 F22 Wiring Loom Door Drivers Side Front Right O/S 9340973

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9381101

BMW F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9381101

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8516122

Battery Cable BMW X5 F15 X6 F16 Alternator Starter Wiring Loom Harness 8516122

PLN 108.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6868253

BMW F20 F21 F30 F31 ECU ICM Control Unit Module Airbag ECU 6868253

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9240083

BMW X5 E70 X6 E71 Safety Control Unit Air Module Bag ECU Bosch 9240083

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9153806

BMW F01 F02 Rear Heater Blower Motor Resistor 9153806

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. E87-E90-PLUG-SOCKET-LOOM-PDC

BMW E81 E82 E87 E88 E90 E91 E92 Plug Socket Loom PDC Parking Sensor

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7540369

BMW E46 N46 Wiring Harness Engine Gearbox Module Loom Cable 7540369

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6929557

Air Module BMW E65 E66 Driver's Seat Sensor Control Unit 6929557

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8590041

BMW G30 G31 B47 Diesel Glow Heater Plug Engine Wiring Loom Cable 8589786

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6793163

BMW X5 E70 Suspension Module Self Leveling Air Supply Control Unit 6793163

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8576341-4

BMW F20 F21 F30 F31 118d 318d 143HP N47N ECU Kit DDE 8576341 + Key + FEM

PLN 949.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6952477

BMW 5 Series E60 E61 Centre Console Switch Centre DTC PDC 6952477

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9371790

BMW 1 Series F20 Telematics Control Unit Module Bluetooth 9371790

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6997612

BMW F20 F21 Air Conditioning A/C Climate Control Unit Module ECU 6997612

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7075944-3

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. 3453791

BMW X3 E83 LCI Crash System Control Unit Module ECU 3453791

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7222633

BMW E90 E91 LCI Flat Cable Wiring Wire CAS Start Stop ECU Loom 7222633

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9234424

BMW F10 F11 Fuse Box Power Distribution Control Unit Box Rear 9234424

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6947817

BMW E65 E66 IDrive Control Unit Front Centre Console Module ECU 6947817

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9398997

Sound Amplifier BMW F80 M3 F82 M4 Hifi Audio Unit Active Sound Design 9398997

PLN 569.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8577241

BMW F30 F32 LCI 330d 335dX 430d 435dX Alternator Starter Cable B+ 8577241

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9176069

BMW E60 E63 E64 KBM Basis Body Control Module ECU Control Unit 9176069

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6935667-1

BMW Z4 Series E85 Roadster Battery Lead Positive Cable Plus Pole 6935667

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9374507

BMW F23 REM Rear Electronic Module Fuse Box Control Unit V2 9374507

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9121903

BMW E81 E87 E91 Switch Cluster Steering Column Cruise Control 9121903

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5A25FC9

BMW G30 Fuel Pump Module Control Unit ECU 5A25FC9

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. X3E83REARWIRINGLOOMPDC

BMW X3 E83 Rear Bumper Wiring Loom PDC Harness Parking Sensor

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6814183

Audio Control Panel BMW F20 F30 F31 F32 Operating Unit FBM 6814183

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6948689

BMW E60 E61 E63 Driver Side Door Air Module Control Unit Module 6948689

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9337879

BMW 1 3 4 Series F20 F21 F30 F31 F34 Power Distribution Fuse Box Front 9337879

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9149673

BMW 5 Series E60 E61 LCI Alarm System Unit Ultra Sonic Module 9149673

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9241826-1

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

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9177979

BMW E81 Body Control Module ECU L2 PL2 JBBFE II Junction Box 9177979

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6935686

BMW E87 LCI E90 Professional Navigation Connecting Cable 6935686

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6948692

BMW E60 E61 E63 Passenger Side Door Airbag Control Module 6948692

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6900582

BMW 7 Series E65 E66 Fuse Board Power Distribution Box

PLN 18.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9389657

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9389657

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9289008

BMW F10 F11 On Board Screen Central Information Display Monitor 10,25" 9289008

PLN 759.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9322122-1

Display Screen BMW F20 F21 F22 Central Information Sat Nav Monitor 6,5" 9322122

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8372204

BMW X5 Series E53 Control Element Light Switch 61318372204 8372204

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8574093-5

BMW F10 F30 320d 520d 163HP Engine Control N47N ECU DDE 8574093 Automatic

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6938226

BMW 3 Series E90 E91 Cable Wiring Loom Rear Door Left Right 61126938226 6938249

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8678960

Mini Cooper S F55 F56 F57 F60 Valvetronic Wiring Cable Loom Harness 8678960

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9254025

BMW 5 7 X3 X5 X6 Series F10 F11 E70 E71 F01 F02 F25 Rain Light Solar Sensor

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 5A234D0

Wiring Cable BMW F06 F12 F13 Electric Parking Hand Brake Handbrake Cable 5A234D0

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

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Showing 793-891 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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