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. 6929916

BMW E63 E64 Rear Bumper PDC Cables Set Wiring Loom Harness 6929916

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8514120

Preheating Control BMW F20 F21 F30 F31 LCI B47 Glow Plug Unit Diesel 8514120

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9240508

Fuse Map BMW X5 X6 E70 E71 Assignment Grouping Card 9240508

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9345330

BMW X3 F25 Body Control Module ECU Junction Box JBBFE III V8 9345330

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9338800

iDrive Control Unit BMW F10 F20 F30 Touch Controller Module ECU 9338800

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8581370-1

BMW F40 Mini Cooper F56 F57 F60 Bracket Control Unit Box Engine 8581370

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7795638

BMW 3 E90 E91 E92 E93 Cable starter-base B Diesel 7795638

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6945145

BMW E60 E61 E63 Air Control Module Passenger Side Door 6945145

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6859714-1

BMW X5 E70 X6 E71 Air Suspension Supply Compressor Valve Control Unit 6859714

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9366413

FEM Module BMW F20 F21 F22 F30 F32 ECU Control Unit Fuse Box 9366413

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7932682

BMW F10 F11 X3 F25 F30 LCI Mini F60 Tailgate Smart Opener Control Module 7932682

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9804157

BMW F20 F21 F22 F23 LCi Mid-range Sound Speaker Stereo HiFi

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8779030

BMW G30 G31 Body Control Comfort Module Unit FEM ECU V05 8779030

PLN 1,424.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9171900

BMW X5 E70 X6 E71 Computer Control Unit DVD Player RSE MID PLUS PL4 9171900

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8639582-2

BMW F20 M135i F22 M235i F30 335i N55 Engine Unit ECU DME 8639582 Manual

PLN 1,614.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6917557

BMW Z4 Z3 E36 E85 Module Radar Burglar Alarm Sensor 6917557 6963225

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8510591-3

BMW E81 E87 E90 LCI 120d 320d N47 ECU Kit DDE 8510591 CAS3 + Key Automatic

PLN 949.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7316536

BMW G30 G11 G12 Sunroof Sliding Roof Drive Unit Motor Actuator

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7857786

BMW F09 F10 F12 F13 Differential Locking Module Control Unit ECU 7857786

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6962723

BMW E60 Light Control Unit Module LME6X MAN.LWR Lear 6962723

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8367253

BMW E38 Fuse Box Battery Power Junction Control Unit Module 8367252 8367253

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7951288

BMW F20 F30 F31 Mini F55 F56 F60 Control Unit Air Conditioning Module 7951288

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3403208

BMW X3 Series E83 Ultrasonic Alarm System Module Control Unit 3403208

PLN 28.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6938079

BMW E81 E87 E90 E91 PDC Speaker Trigger Contact 6969139 6938079

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9186215

Audio Controller BMW E90 System Control Unit Module Navigation 9186215

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9209183

Sound Speaker BMW X3 F20 F21 F25 Mid Range Stereo HiFi 9209183

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9389600

BMW Gran Turismo G32 Radio Aerial Antenna Amplifier AM/FM 9389600

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6839821

Battery Cable BMW G01 G02 F97 F98 Positive Plus Pole Lead L= 712MM 6839821

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8507398

Glow Bracket BMW E60 E87 LCI E90 E91 E92 F10 F11 N47 Diesel Relay Plug 8507398

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8721882

BMW F20 F21 F22 F30 F31 LCI Head Unit Media DAB Navigation Professional 8721882

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8741637

BMW X1 F40 F48 Mini F55 F56 F57 F60 Earth Cable Battery Cable 8741637

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8513249

BMW X3 F25 20dX Diesel N47N 184HP Engine Module ECU DDE 8513249 Automatic

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6926445

BMW 5 Series E60 E61 LCI Heated Front Seat Control Module 6926445 9182128

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7791352

BMW X5 Series E53 3.0d M57N Cable Starter Base B 7791352 12427791352

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9119359

BMW E60 E61 E63 E81 E87 E90 E91 DAB Radio Tuner Module Unit 9119359

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8635816

Engine Wiring BMW F20 F30 F31 LCI B38 Automatic Gearbox Loom Harness 8635816

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9315152

BMW X3 F25 Fuse Box Grouping Map Diagram Location 9315152

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8506434-4

BMW E81 E84 E87 E90 LCI 18d 118d 318d N47 ECU Kit DDE 8506434 CAS3 Key Automatic

PLN 1,044.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7286050

BMW F20 Control Unit Module Wing Mirror Power Fold 7286050

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. E92-PDC-WIRING-LOOM-HARNESS-REAR-BUMPER-2

BMW E92 E92N LCI PDC Wiring Loom Harness Rear Bumper

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8635808-1

Engine Wiring BMW F20 F30 F31 LCI B38 Loom Module 2 Harness Cable 8635808

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9210863

BMW X3 F25 Fuse Box Power Distribution Module Relay Unit 9210863

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6843898

BMW F20 F21 F22 F30 F31 F32 Body Control Module Unit FEM ECU LR01 6843898

PLN 569.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7631109

BMW F20 F21 F30 F32 F87 Battery Cable Negative IBS 7631109

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8581872

Engine Wiring BMW F10 F11 N57Z Diesel Gearbox Loom Module Harness 8581872

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9362396

BMW F20 REM Rear Electronic Module Fuse Box Control Unit V3 9362396

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8573260-2

BMW F20 F21 116d ed Diesel N47N 116HP Engine Control Unit DDE 8573260 Manual

PLN 161.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6953467

BMW 1 3 Series E88 E93 Convertible Tel Phone Antenna Aerial 6953467

PLN 104.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9184559

Seat Control Module BMW E60 X5 E70 ECU Seat Unit Controller 9184559

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6928267

BMW E65 E66 E67 Gateway Sensor Air Module Control Unit 6928267

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7622980

Wiring Harness BMW F20 F21 F30 Motor Sensor System Module 2 7622980

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9240490

Battery Distribution Box BMW F01 F02 F10 F11 Power B+ Rear 9240490

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9276036

BMW 5 Series F11 Touring Antenna Aeral Amplifier Diversity 868 MHZ 9276036

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8622032

BMW F20 F21 F30 F31 LCI Control Unit Box Cover Mudguard Flap Cap 8622032

PLN 51.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8321087-1

BMW E60 Front Seat Height Adjustment Electric Motor Actuator 0390203234 8321087

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6938226-1

BMW E90 E90N E91 E91N LCI M3 Wiring loom rear door left right 6938225

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9354457

BMW F20 F30 F31 F32 Front Seat Control Unit Module ECU 9354457

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6926962

BMW E60 E61 Front Seat Adjustment Switch Right O/S 6926962 6930048

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9459681

Seat Module BMW F20 F30 F32 F33 X1 F48 X5 F15 Front Control Unit ECU 9459681

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9247481

BMW X3 F25 Control Module CAS Unit ECU 20dX Diesel N47N 9247481

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7789755

BMW 5 6 Series E60 E61 E63 E64 LCI Cable Starter-Base B 7789755

PLN 18.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6788716

BMW 7 Series E65 E66 E67 Steering Column Control Unit CIM Module

PLN 46.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6934096

BMW 7 Series E65 Cable Harness Door Rear Right Left N/O/S Wiring Loom 6923713

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7838929

BMW 3 5 6 Series E60 E63 E90 E92 Crossover Frequency Unit Module Door 7838929

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7611322

BMW F01 F02 F06 F07 F10 F11 F12 Positive Cable Battery Lead N55 Engine 7611322

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9286941

BMW F10 ECU Body Control Module Junction Box V2 PL6 JBBFE III 9286941

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6907520

BMW 5 X5 Series E39 E53 Dual Band Cable Compensator Hands Free Phone 6907520

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8368167

BMW E38 Inclination Indicator Alarm Tilt Sensor Control Module 8368167

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6980089

BMW 5 Series E60 E61 Alarm System Unit Ultra Sonic Module 6980089

PLN 23.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9242670

DVD Changer BMW F01 F10 F11 F12 F20 F30 Disc Changer Control Unit 9259800

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6940236

BMW E90 E91 E92 LCI AUX USB Lead Cable Wire 6940236

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8507908

BMW F20 Gearbox Transmission Harness Wiring Loom Manual 8507908

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6904620

BMW 7 Series E65 E66 Diversity Antenna Tuner Amplifier Wiring 6904620

PLN 18.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9261095

BMW 7 Series F01 F02 LCI Antenna Aerial Noise Suppression Filter 9261095

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7316187

BMW F80 M3 F32 F33 Xenon Headlight Control Module Lear TMS 7316187

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7634056

Engine Wiring BMW F20 F21 F30 F31 N20 Cable Loom Harness 7634056

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9367693

BMW M5 F90 G11 G12 Power Distribution Relay Fuse Box Make Contact 9367693

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9269896

BMW X3 F25 Business CD Radio Player Head Unit Control 9269896

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7011612

BMW 7 Series E65 E66 E67 Centre Console Coinbox With Vent Storage Compartment

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6990089-1

BMW 6 X3 Series E63 E83 Radio Antenna Amplifier Suppression Filter

PLN 18.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9226881

BMW 1 Series F20 F20N F21 F21N LCI Radio Aerial Antenna Amplifier AM/FM 9226881

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7798034

BMW E60 E65 E87 E90 Starter Motor Engine 7798034

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6941503

BMW X5 Series E53 Cable Harness Door Front Right Left N/O/S 6941503

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8366625

BMW 259 259R 259 R22 Connection Plug Relay Pink Tyco 8366625

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6825541

BMW F20 F21 F22 F30 F32 Front Electronic Module Control Unit FEM 6825541

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9128982

BMW F20 F30 F31 LCI Mini F55 F56 Compensator LTE UK Control Unit Module 9128982

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6858547

BMW X3 F25 ICM Control Unit Air Module SRS ECU 6858547

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9141048

BMW E60 E87 E90 E91 Hands-Free Electronics Charging MULF2 9141048

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9166542

BMW E92 HDD Navigation Reader System Module Unit ZB CE3 Navi JAPAN 9166542

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3419515

BMW E83 LCI Valvetronic Starter Cable Wire Loom 3419515

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8571357

BMW G11 G12 G20 G21 G30 G31 F33 F36 Generator Alternator 180A Bosch 8571357

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3424581

BMW X3 Series E83 Airbag Control Unit Module ECU 65773424581 3424581

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7120204

BMW E93 Cable Wiring Loom Harness Hydraulic Pump 7120204 7191362

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8605454

Engine Wiring BMW F10 F21 F30 LCI F36 N20 Loom Module Harness Cable 8605454

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9289374

BMW X5 X6 F15 F85 F16 F86 Front Battery Fuse Box Positive Distribution Terminal

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 1421295

Mini EGS Control Unit Module ECU Programmed 5 Pins 1421295

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6925964

BMW X3 E83 Drive For Window Lifter Motor Front Right O/S 6925964

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8679817

BMW F98 Earth Ground Cable Negative Battery Lead Wiring 8679817

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9229880

BMW E88 Cabrio ECU Body Control Module H3 Junction Box 9229880

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

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Showing 1684-1782 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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