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. 9302937

BMW F01 LCI Cable Door Rear Left Right N/O/S Wiring Harness 9262882

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9227118

BMW F07 GT On Board Central Information Display Screen Monitor 10,25" 9227118

€66.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9234424

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

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9259800

BMW F10 F12 F13 F20 F30 F06 Mini F55 F56 F57 DVD CD Changer Control Unit 9259800

€66.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7555193

BMW F10 Control Unit Box F07 F11 Engine Ventilation Housing Box 7555193

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8510592

BMW E81 E87 E90 LCI 118d 318d N47 143HP ECU Control Unit DDE 8510592 Manual

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 1388911

BMW E36 E38 E21 E85 R52 R57 Change-Over Contact Relay Violet 1388911

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9342033-1

BMW F10 F20 F30 Head Unit Media Navigation Headunit Player 9342033

€42.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6940624

BMW E81 E87 E90 E91 E92 Ultrasonic-sensor PDC Arktis Metallic A34 6940624

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6957807

BMW X3 E83 Amplifier For Stereo System Harman/Becker AMP 6957807

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7823310

BMW 3 Series F30 F31 330d 330dX N57N Diesel Alternator Starter Cable B+ 7823310

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9261110

BMW F20 F21 F30 F31 Fuse Box Power Distribution Control Unit Box Rear 9261110

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9259467

Fuse Box BMW X3 F25 Power Distribution Control Unit Module Front 9259467

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8809737

PDC Wiring BMW X4M F98 G02 Rear Bumper Parking Assistance Sensor Harness 8809737

€89.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6927311

BMW E60 Front Seat Control Unit Module Controller ECU 6927311

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6905950

BMW X5 Series E53 Spoiler Dualband Antenna Amplifier Aerial 6905950

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9261598

BMW F20 F21 F22 Rear Bumper PDC Ultrasonic Sensor Valencia Orange Metallic B44

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8676222

BMW 3 F30 LCI Hybrid 330e Battery Starter Connecting Lead Cable Wiring 8676222

€113.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9499005

BMW F32 REM Module Body Control Module BCM Fuse Relay Unit V5 9499005

€28.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6941445

BMW E63 E64 Bluetooth Cable Hands Free Telephone Microphone Unit 6941445

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 5A923C4

BMW F40 G20 G21 G30 G31 X3 G01 HiFi Audio Sound Amplifier RAM Module 5A923C4

€189.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9159028

BMW E60 E61 Navigation Head Unit CCC CD Sat Nav Player System Controller 9159028

€427.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6861026

BMW I01 F45 F46 Mini F55 F56 Parking Assistant PDC Control Unit Module 6861026

€23.95

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

€47.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6809316

BMW F10 F20 F23 F30 Telematics Module Bluetooth Communications Control 6809316

€113.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9365837

BMW F20 F21 F22 F30 F31 Head Unit Basic Media Headunit 9365837

€218.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9210863

BMW X3 F25 Fuse Box Power Distribution Module Relay Unit 9210863

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7220891

BMW E91 LCI Control Unit Module Support Plate Bracket Carrier Holder 7220891

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9153803

BMW X5 Series E70 Light Lightning Control Unit Module FRM II Lear 9153803

€170.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8379941

BMW X5 Series E53 Interior Roof Trim Cover Ultra Sonic Module Alarm 8379941

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6949081

BMW 1 3 Series E81 E82 E88 E92 Front Seat Easy Entry Adapter Wire Cable 6949081

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6910542

BMW 3 X3 Series E46 E83 Battery Cable Plus Pole Power Positive 6910542

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9339825

BMW G11 G30 G31 Power Supply Module High Voltage Battery Terminal Point 9339825

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7796127

BMW X5 X6 Series E70 E71 Diesel Battery Cable Starter-Base B+ 7796127

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7804127

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

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8586568

BMW F20 F22 F23 Gearbox Transmission Module Harness Wiring Loom Cable 8586568

€56.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7609656-3

BMW Z4 E89 Roadster 23i N52N 204HP ECU Kit DME 7609656 CAS3 Key Manual

€336.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9212916

BMW 5 7 X5 E70 F01 F02 F10 F11 Rain / Light / Solar Fogging Sensor 9212916

€28.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7810860-1

BMW 3 Series E90 E91 E92 E93 LCI N47N Engine Alternator Starter Cable B 7810860

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6968652

BMW 3 Series E93 E93N LCI Aerial Antenna AM / FM Right O/S 6968652

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7805349-2

BMW X3 E83 LCI M47N2 2.0d 150HP ECU Kit DDE EWS4 Key 7805349 Manual

€303.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6809050

BMW F20 F30 Rear Electronic Module REM Fuse Box Control Unit V2 ECU 6809050

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9305736

BMW X1 E84 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9305736

€61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8573258-10

Engine Control Unit BMW F20 116d F30 316d N47N 116HP ECU DDE 8573258 Manual

€32.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8632687

BMW i3 I01 Engine Motor Sensors Module Wiring Cable Wire Harness 8632687

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 3421562

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

€47.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8512499-4

BMW E87 E90 LCI N47 118d 318d Diesel ECU Kit DDE 8512499 CAS3 + Keys Automatic

€256.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8580061

BMW F40 F48 Mini F55 F56 Battery Starter Cable Wiring Loom B47B B47D 8580061

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7798482

BMW E60 E61 Battery Alternator Cable Lead For Preheater System 7798482

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7615308

BMW F20 F21 F30 Petrol N13 Wiring Loom Harness Engine Gearbox Manual 7615308

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9339274

CAS4 Module BMW F01 F07 F10 F11 F12 X3 F25 Key Reading Control Unit 9339274

€66.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7394651

BMW 5 F11 Touring Rear Boot Trunk Lid Tailgate Control Unit Module ECU 7333928

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6923945

BMW 5 6 SERIES E60 E60N E61 E61N E63 B terminal point engine compartment 6923945

€28.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8605144

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

€56.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 130002618

BMW X3 X5 E53 E83 Front Seat Adjustment Actuator Drive CRH 1-1968-01

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7464634

BMW X1 F48 Control Unit Remote Backrest Unlocking 7464634

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6819329

KaFAS Camera BMW i3 I01 F10 F20 F30 LCI Speed Control ECU Module Unit 6819329

€28.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7599881-1

BMW E87 LCI E90 E91 118i 318i Petrol N43 143HP ECU KIT DME 7599881 CAS3 + Key

€170.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9149835

BMW X5 E70 Front Seat Control Unit Module Driver's Side 9149835

€56.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8621190

BMW F20 F22 F30 LCI Electric Line Cable Power Distribution Module 8621190

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8518568

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP Engine Control ECU DDE 8518568

€37.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9301522

BMW F01 F02 F07 F10 F11 CAS4 Control Unit Key Reading Module 9301522

€113.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9270495-1

BMW X5 E70 X6 E71 F10 F11 F12 Parking Sensor PDC Ultrasonic Black 9251944 SET X4

€37.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8602802

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

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6911003

BMW 1 3 X1 X3 X5 X6 SERIES E81 E82 E84 E87 E88 E90 Accelerating Sensor 6911003

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9168336

BMW X1 E84 Diversity Aerial Antenna Amplifier DAB 9168336

€37.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8803368

Display Screen BMW F45 F46 Central Information Navigation Monitor 6,5" 8803368

€161.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6865298

BMW F20 F21 F30 F31 ECU ICM Plus Control Unit Module Airbag 6865298

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8510284

Engine Wiring Loom BMW F30 F31 F32 330d 430d N57N Gearbox Module Harness 8510284

€47.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8779030

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

€569.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6912817

BMW E46 Z4 E85 E86 Antenna Amplifier Diversity 6912817

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8352336

BMW X3 X5 E39 E46 E60 E61 E83 E90 E91 Glove Box Torch Charger Sock 8352336

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9337210

BMW 4 F33 F83 M4 Cabrio Front Door Driver's Side Wiring Loom Cables 9337212

€28.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6932644

BMW 3 5 Series E60 E71 E90 E92 Suppression Filter Aerial Module Antenna 6932644

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8512499-10

BMW X1 E84 18d N47 ECU Engine Control Unit Kit DDE 8512499 CAS3 + Key Manual

€199.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6923217

BMW 6 E64 E64 LCI Bracket Control Unit Vehicle Electrical System 6923217

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9798377-1

BMW F45 LCI 225xe B38X B38A15A 224HP Engine ECU DME Kit 9798377 BDC + Key

€379.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9257151

BMW F20 F21 F30 F31 Telematics Module Bluetooth Combox 9257151

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8506199-2

BMW E60 E61 LCI 520d N47 Diesel Engine ECU Kit DDE CAS3 + Key 8506199

€284.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9150889

BMW E81 E87 LCI Front PDC Parking Distance Control Loom Wiring 9150889

€47.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9111165-PB2

PDC Sensor BMW E81 E82 E87 E88 E90 E91 Ultrasonic Parking SET X4 Platinbronze

€51.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9187533

BMW E92 ECU Body Control Module Junction Box L1 PL2 JBBFE II 9187533

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6957348

BMW 6 Series E63 E64 F06 F12 F13 Aerial Antenna Amplifier Module Right O/S

€23.95

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

€28.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9367807

BMW X5 F15 Battery B+ Engine Compartment Positive Terminal Point 9367807

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6855995

Control Unit Module BMW F20 F21 F22 F30 F31 ECU ICM Plus 6855995

€23.95

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

€132.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6840399

Head Unit BMW F20 F21 F22 F30 F31 Radio CD Navigation Business GPS 6840399

€227.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9177978

BMW E92 ECU Body Control Module Junction Box L1 PL2 JBBFE 9177978

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7556880

Engine Wiring BMW Z4 E85 E86 Petrol N52 Loom Harness Module Manual 7556880

€227.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9798427

BMW F87 LCI M2 Competition S55 411HP Engine Control Unit ECU DME 9798427

€332.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8387568

BMW 7 Series E65 E66 Battery B Engine Compartment Terminal Point 8387568

€23.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8510829-5

BMW E90 E91 LCI N47N 320d ECU KIT DDE 8510829 CAS3 + Key Manual

€70.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8506281-1

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

€94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9252813

BMW 5 7 Series F01 F02 F10 F11 Power Distribution Fuse Box Rear 9252813

€28.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8577238

BMW F30 F31 Sterter Motor Alternator Cable Wiring Loom Harness 8577238

€28.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9187541-1

BMW E88 ECU Body Control Module H3 PL2 JBBFE II Junction Box 9187541

€32.95

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

€227.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9436289

BMW G20 G21 Rear Door Wiring Loom Cable Control Unit Left Right N/O/S 8718245

€32.95

Free delivery - Tue, Jan 13

If paid before 14:00

...

Showing 397-495 of 5104 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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