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. 9134666

Seat Module BMW E87 E90 E91 E92 Control Unit ECU 9134666

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8581751

BMW F40 MINI F56 F57 F60 Engine Control Unit ECU Box Top Cover Shield 8581751

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6950181

BMW E93 Aerial Antenna Amplifier Diversity Control Module 6950181 9187798

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8371312

BMW 3 Series E46 Relay Control Unit Module Bracket Holder 61358371312 8371312

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9459673

Seat Module BMW X4 F26 F20 F30 Front Driver Side Control Unit ECU 7943747

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9221861

BMW E90 E91 E93 LCI Front Left Right N/O/S Seat Control Module ECU 9221861

PLN 151.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 3450847

BMW X3 E83 LCI Cable Loom Door Passenger Side Wiring Harness 3450838

PLN 100.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9384988

BMW F20 F45 F46 Kafas Camera Control Module Unit ECU 9384988

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9335289

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

PLN 75.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8633997

Ground Line BMW G11 G12 G20 G30 G31 Battery Earth Cable Wire 8633997

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9174269-1

BMW F07 F10 F11 Speakers Amplifier Bracket Holder Mount Unit Module 9174269

PLN 75.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9226333

BMW E93 ECU Body Control Module H3 Junction Box PL2RR JBBFE IIIR 9226333

PLN 332.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 5A0BD89

BMW F40 Power Distribution Fuse Box LIN Control Unit Module 5A0BD89

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 7850995

Engine Wiring BMW F80 M3 F82 M4 S55 Inject Loom Cable Harness Injector 7850995

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6809051

BMW F20 LCI REM Rear Electronic Module Fuse Box Control 6809051

PLN 56.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6980078

BMW E88 Antenna Amplifier Aerial Diversity Module AMP 6980078

PLN 113.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 5A44586

BMW F40 Ultrasonic Alarm System Module Control Unit 5A44586

PLN 189.95

Free delivery - Tue, Jan 13

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 - Tue, Jan 13

If paid before 14:00

Part no. 8594489

BMW X1 F48 Mini F55 F56 F57 Battery Cable Starter-Base B+ 8594489

PLN 85.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7638192

BMW F20 F21 F30 F31 N13 Petrol Engine Starter Motor Bosch 7638192

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9267205

BMW E91 Touring LCI ECU Body Control Module Junction Box H2 9267205

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 5A5D3C0

Keyless Entry BMW F40 G20 G21 G30 G31 Comfort Access Antenna 5A5D3C0

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9139868-1

BMW X3 E83 LCI X5 E70 LCI PDC Parking Ultrasonic Sensor Black 9139868

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6927786

BMW X5 Series E53 Amplifier Compensator Holder Catch Bracket 6927786

PLN 108.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6950374

Door Cable BMW E65 Loom Rear Right O/S Wiring Harness 6950349

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 7627023

BMW F20 F21 F30 Petrol N13 Automatic Gearbox Engine Sensor Module 1 Wiring

PLN 113.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8780776

Head Unit BMW F10 F20 F22 F30 Navigation Sat Nav GPS Unit High 8780776

PLN 2,279.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 3508099

BMW X3 SERIES E83 Wiring Loom Harness Passenger Side 3508099

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 7619144

Engine Wiring BMW F10 F20 F21 F30 N20 Loom Harness Ignition Module 7619144

PLN 246.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6976964

BMW 3 5 X5 Series E39 E46 E53 BMW Radio Professional TMC Unit 6976963

PLN 949.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9145350

BMW X3 E83 LCI EWS IV 4.4 Control Unit Module ECU 9145350

PLN 260.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9317175

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9317175

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8577243

BMW X3 F25 Battery Cable Wire Lead Positive Alternator Starter X4 F26 8577243

PLN 94.95

Free delivery - Tue, Jan 13

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 - Tue, Jan 13

If paid before 14:00

Part no. 9115449

BMW X5 X6 E70 E71 Power Junction Box Positive Battery Cable Plus Pole 9115449

PLN 332.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9240527-1

BMW E87 LCI ECU Footwell Light Module BASIS PL2 FRM3R Lear 9240527

PLN 474.95

Free delivery - Tue, Jan 13

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 Manual

PLN 617.95

Free delivery - Tue, Jan 13

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 - Tue, Jan 13

If paid before 14:00

Part no. 8583653-1

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

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6919759

BMW E65 E66 E67 Control Unit Front Centre Console Module 6919759

PLN 42.95

Delivery - Tue, Jan 13

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 - Tue, Jan 13

If paid before 14:00

Part no. 7516376

BMW E65 E66 E67 Electric Valve 735i 745i 735Li 745Li 745LiS 7516376

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6963013

BMW 5 6 Series E60 E61 E63 Driver Side Door Airbag Control Unit Module 6963013

PLN 47.95

Delivery - Tue, Jan 13

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 - Tue, Jan 13

If paid before 14:00

Part no. 7627021

BMW 1 3 Series F20 F21 F30 Petrol N13 Harness Engine Sensors Module 1 7627021

PLN 203.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7810863

Battery Cable BMW X3 F25 Wire Lead Positive Alternator Starter B+ 7810863

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9234421

Fuse Box BMW F01 F02 F07 F10 F11 Power Distribution Front 9234421

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6951079

BMW E60 525i 530i 545i Fuses Set Electrical Fuse 6951079 61146951079

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6927311

BMW E60 Front Seat Control Unit Module Controller ECU 6927311

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6967184

BMW X5 X6 Series E70 E71 Positive Battery Cable Terminal Box Base B+ 6967184

PLN 85.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9362848-1

Telematics Module BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Unit 9342881

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8506281-2

BMW E87 LCI E90 116d 316d N47 Engine ECU KIT DDE 8506281 + CAS3 + Key Manual

PLN 284.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6932452

BMW 5 6 Series E60 E61 E63 E64 Power Distribution Electrical Fuse Box 6932452

PLN 55.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 8792232

BMW X1 F48 Mini F55 F56 LCI B+ Junction Terminal Power Distribution Box 8792232

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9377149

BMW 1 3 Series F20 F21 F30 F31 Telematic Control Unit Module 9377149

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6990089

BMW 6 X3 Series E63 E83 Radio Antenna Amplifier Suppression Filter

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 7316147

BMW F30 F31 F34 Headlight Module Xenon Headlamp Control Unit Lear TMS 7316147

PLN 379.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6945147

BMW 5 6 Series E60 E61 E63 Passenger Door Airbag Control Module 6945147

PLN 28.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9316576

BMW 3 Series F30 F31 Battery Cable Wire Lead Positive Underfloor 9316576

PLN 379.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9316569

BMW X5 F15 Fuse Box Rear Relay Module Control Unit 9316569

PLN 56.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9160189

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

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6959987

BMW 7 Series E65 E66 Windscreen Wiper Switch Column Stalk 61316959987 6959987

PLN 18.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9293307

BMW F30 REM Rear Electronic Module Fuse Box Control Unit V2 9293307

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9123739

BMW 1 3 5 7 Series E81 E87 E90 E91 E92 F01 USB USB Hub Audio Interface Module

PLN 46.95

Delivery - Tue, Jan 13

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 - Tue, Jan 13

If paid before 14:00

Part no. 6980177-2

BMW E81 E87 E90 E91 F10 F11 X5 E70 Relay Unit Green Set TYCO 5 Pins 6980177

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9313618

BMW 3 Series F30 F31 F80 M3 Front Rear Right O/S Wiring Loom Harness Cables Set

PLN 218.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8512499-1

BMW E81 E87 E90 E91 LCI N47 143HP Diesel ECU Kit DDE 8512499 Manual

PLN 569.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6911838

BMW 5 X3 X5 Series E53 E60 E61 E83 PDC Parking Sensor Ultrasonic Schwarz Black

PLN 85.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9331207

BMW F20 CD DAB Radio Bluetooth Head Unit 9331207

PLN 113.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 1388911-1

BMW E36 E38 E85 Mini R52 R57 2x Change-Over Contact Relay Violet Set 1388911

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6989080-OLI

BMW E65 E66 E67 PDC Rear Parking Sensor Ultrasonic Olivin Metallic

PLN 155.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8795213

BMW F20 F21 F30 F31 Wire Cable Screen Connector Monitor Display 8795213 8795212

PLN 189.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8509722-2

Control Unit Box BMW F20 F21 F22 F30 F31 Cover Panel Protection 8509722

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9350003

Safety Control Unit BMW F01 LCI F07 F10 F11 F25 Air Module Bag ECU 9350003

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6954130

BMW 1 3 Series E87 E90 E92 Front Seat Adjustment Switch Right O/S 6954130

PLN 75.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7794911

BMW E87 E90 E91 Cable Alternator Starter Base B 7794911

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9234087

BMW E70 F01 F02 F10 F11 Rain / Light / Solar Fogging Sensor Control Unit 9234087

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 7795485

BMW X1 E81 E84 E87 E90 E91 Earth Cable Battery Cable 7795485

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 7540203

BMW X5 Series E70 Control Unit DME Module Emergency Release Lock 7582630

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7253188-1

BMW 3 Series E92 Sports Seat Left Right Thigh Support Cover Trim Leather Dakota

PLN 85.95

Free delivery - Tue, Jan 13

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 - Tue, Jan 13

If paid before 14:00

Part no. 9384214

BMW F10 ECU Body Control Module V2 PL6 JBBFE III Junction Box 9384214

PLN 208.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9203082

BMW E60 E63 E65 Adaptive Light Control Unit Module LM E6X AHL 9203082

PLN 712.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9380334

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 9380334

PLN 151.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9128569-1

BMW 1 Series E81 E82 E87 LCI E88 Wiring Harness Air Valve Air Flap 9128564

PLN 32.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9226884

BMW F20 F21 LCI Antenna Amplifier Diversity 9226884

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 7316535

BMW F20 F22 F30 Sliding Sunroof Drive Motor Unit Webasto 7193398

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9195223

BMW 7 Series E65 E66 DVD Navigation System Computer Unit EXCH 9122860

PLN 750.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9329703

BMW F20 F21 F30 F31 F32 Rear Body Control Unit Module REM 9329703

PLN 85.95

Free delivery - Tue, Jan 13

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 - Tue, Jan 13

If paid before 14:00

Part no. 3453791

BMW X3 E83 LCI Crash System Control Unit Module ECU 3453791

PLN 189.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8364542

BMW E46 X3 E83 Power Distribution Fusebox Cover Fuse Box 8364542

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6960227

BMW E65 E66 Sensor Air Bag Front Left Door N/S Module Airbag 6960227

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6964263

BMW 3 Series E93 E93N Cabrio Module Bracket Holder CTM 6964263

PLN 46.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 8602973

Battery Cable BMW F45 Mini F54 F56 B48 Alternator Starter Wiring 8602973

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9399247

BMW F20 F30 F31 F32 ECU Camera Module Based Drive Support

PLN 112.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9160187

BMW 1 Series E81 Body Control Module ECU L2 PL2 JBBFE II Junction Box 9160187

PLN 42.95

Delivery - Tue, Jan 13

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 - Tue, Jan 13

If paid before 14:00

...

Showing 595-693 of 4792 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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