What is a car electrical system?

This is a set of components responsible for powering and controlling all electrical functions in the car – from engine starting to multimedia.

What is an alternator for in a car?

The alternator generates electrical current when the engine is running and charges the battery.

What is the difference between a starter and an alternator?

The starter motor is used solely to start the engine, while the alternator is responsible for generating energy while driving.

How to check if the battery is working?

Just measure its voltage – a healthy battery should have approximately 12.6 V at rest and maintain a voltage above 10 V during cranking.

What are the most common symptoms of car electrical failure?

Problems starting the engine, flashing warning lights, power windows not working or dimming lights.

Do electrical parts from one model fit another?

Sometimes yes, but the key is to match it by VIN or OEM number – this guarantees compatibility.

How often should you check your electrical system?

It is worth performing basic diagnostics (battery, alternator) at least once a year or before a long trip.

Automotive electrical systems

At Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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Part no. 6850846

BMW F10 F11 F12 Parking Brake Unit Electric Control Module EMF 6850846

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8677250

Battery Starter Cable Mini Countryman F60 Cooper S B48 Positive Plus 8677250

€32.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6986081-2

CD Changer BMW E60 E61 E63 E64 Compact CD Changing Unit 6986081

€37.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8631637

Earth Ground Cable BMW i3 I01 Battery Starter Terminal Wiring 8631637

€28.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9171925

BMW E88 Convertible Air Module Sensor ECU Control Unit Module 9171925

€28.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6967184-1

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8635815

BMW F20 F30 LCI 118i 318i B38 Gearbox Wiring Loom Harness Cable 8635815

€32.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A6397600104

Bowden Cable Mercedes W639 Vito Door Handle Catch Top Rear Left Wire A6397600104

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8570849

BMW F20 F21 F30 F31 LCI 116i 118i 318i B38 Petrol Engine Starter Motor 8570849

Product currently unavailable

Part no. 9143121-1

BMW E81 E87 E90 E91 E92 E60 E61 Loudspeaker Speaker Logic7 L7 HiFi Audio 9143121

€37.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8579478

BMW F20 F30 F32 120dX 320dX 420dX Diesel N47N 184HP ECU Unit DDE 8579478 Manual

€94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 3454167-1

BMW X3 E83 Shark Roof Fin Antenna Aerial Module Unit 3454167 3436613

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 969713

BMW F01 F07 Boot Trunk Lid Tailgate Lock Wiring Harness Loom Cable 969713

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9244417

Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9244417

€322.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9257090

Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9257090

€332.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A9065420518

Mercedes-Benz W639 W906 ESP Yaw Rotation Rate Sensor Control Unit A9065420518

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8321087-1

BMW E60 Front Seat Height Adjustment Electric Motor Actuator 0390203234 8321087

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 5TRK0200UK

BMW X5 E53 GPS Vehicle Location Tracker Control Unit Module ECU 5TRK0200UK

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9297282-1

BMW E63 E64 Battery Power Cable Lead Positive Underfloor Red 9297282

€37.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9229989

BMW F07 GT Cable Loom Door Rear Left Right N/O/S Wiring Harness 9210135

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. TM450

Trafficmaster TM450 GPS Vehicle Location Tracker Control Unit Module ECU

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8516739-3

Mini Cooper D R55 R56 LCI R60 N47N Engine ECU Kit DDE 8516739 CAS3 Key Automatic

€142.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7223190

Rear View Camera BMW F07 GT Trim Panel Cover Boot Lid Tailgate 7223190

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A6397601804

Mercedes Vito W639 Door Handle Bowden Cable Catch Rear Wire A6397601804

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A6395407809

Wiring Loom Mercedes W639 Vito Cable Sliding Door Rear Left N/S A6395407809

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2465405833

Mercedes W176 W246 Starter Cable Loom Wiring 160 180 CDI Diesel A2465405833

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A6459060800

Starter Motor Mercedes W176 W246 C117 Diesel Engine Denso A6459060800

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2465400335

Mercedes W176 W246 Negative Earth Cable Battery Terminal Wiring A2465400335

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A6394405109

Mercedes Vito W639 Wiring Harness Rear Boot Trunk Lid Tailgate Loom A6394405109

€32.95

Free delivery - Tue, Nov 25

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

€85.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A0061514501

Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501

€37.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A6397600340

Mercedes Vito W639 Door Handle Cable Catch Bowden Cable Rear A6397600340

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8509722-2

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9259425-2

Positive Battery Cable BMW F30 F31 F80 M3 F82 M4 Plus Pole Power Red 9259425

€28.95

Free delivery - Tue, Nov 25

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, Nov 25

If paid before 14:00

Part no. 8376445

BMW X3 X5 E53 E83 E46 E39 LCI Switch Unit Steering Column 8376445

€28.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8512415-2

Mini Cooper D R60 ALL4 N47N 112HP Diesel Engine ECU Kit DDE 8512415 CAS3 Key

€227.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 420919275-1

Rear Bumper PDC Audi A5 Sensor Parking Distance Control 420919275 1706091849

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8506442

BMW E81 E82 E87 LCI E88 123d Petrol N47S 204HP ECU Engine DDE 8506442 Manual

€165.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8510832

BMW E90 E91 LCI N47N 318d 143HP Engine Control Unit ECU DDE 8510832 Automatic

€151.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9261604

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9222861

BMW 1 3 Series E87 E90 LCI CIC Sat NAV Screen Navigation Professional 9222861

€275.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A0025407097-1

Mercedes W221 Air Pump Valve Pressure Electric Change Over Sensor A0025407097

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9270491-BS

PDC Parking Sensor BMW E70 LCI F07 F25 Ultrasonic Black Sapphire 9216207

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6934096

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8473167

BMW F30 F31 F32 LCI 330dX N57N Engine Gearbox Module Wiring Cable Loom 8578498

€28.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7559811

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7799146

Mini R55 R56 Alternator Supporting Bracket Mount Generator Diesel W16 7799146

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A6519062300

Starter Motor Mercedes W204 W212 OM651 Diesel Engine Starter A6519062300

€32.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7316147

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

€70.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9149836

Seat Control Unit BMW X5 E70 E87 E90 Module ECU Electronic Module 9149836

€47.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9270392-1

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9276009

BMW F07 GT Rear Antenna Aerial Amplifier AM/FM DABIII FBD2 868MHZ 9237057

€189.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 3450847

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9257093

Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9257093

€170.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7363091

Xenon Headlight Module BMW F22 F23 Control Unit Driver Module 7363091

€94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9200503

BMW E60 LCI F01 F07 F10 ECU USB Hub Control Unit Module 9200503

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9115449

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

€32.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A1698208426

Mercedes-Benz A B W169 W245 Front Right Door O/S Control Unit Module A1698208426

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9323554

BMW 1 3 Series F20 F21 F30 Operating Unit Audio FBM Control Unit Panel 9323554

€32.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9248298

BMW E88 E93 LCI ECU Control Unit Air Module 9248298

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9270646

BMW E88 ECU Body Control Module H4 Junction Box PL2RR JBBFE IIIR 9270646

€47.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6863433

BMW F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6863433

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9317174

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9134669

BMW E93 Convertible Seat Control Unit Module ECU 9134669 FSV 7.10.0

€32.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8486547

Mini Cooper F55 F56 Dual-Clutch Transmission Gearbox Control Unit Module DCT

€427.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A9064461442

Mercedes Sprinter W906 ECU Control Unit Sensor Module A9064461442

€23.95

Free delivery - Tue, Nov 25

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, Nov 25

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, Nov 25

If paid before 14:00

Part no. 8572426

BMW F30 F32 LCI 335dX 435dX Engine Injector Ignition Wiring Cable Loom 8572426

€32.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8577241

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8570676

BMW F30 F32 LCI N57N N57Z Diesel Engine Alternator Generator 230A Valeo 8570675

€51.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6922652-1

BMW 3 X3 X5 E70 E91 E83 1 Sunroof Sliding Roof Drive Unit Motor Actuator 6922652

€39.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9146244

BMW X3 X5 Series E53 E83 Control Unit Sliding Lifting Roof Panorama 9146244

€28.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8506373

BMW X3 Series E83 LCI 1.8d N47 Engine Control Unit ECU Module DDE 8506373 Manual

€227.95

Free delivery - Tue, Nov 25

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, Nov 25

If paid before 14:00

Part no. 8586571

BMW 1 3 F20 F30 LCI B47 Engine Gearbox Module Wiring Cable Loom Harness 8586571

€66.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7631026

Mini R55 R56 R57 LCI R60 N47N Automatic Gearbox Basic Control Unit EGS 7631026

€56.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8516246

BMW F10 LCI F20 F22 F30 F32 B37 Wiring Harness Engine Glow Plug Module 8516246

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9168336

BMW X1 E84 Diversity Aerial Antenna Amplifier DAB 9168336

€37.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6970701-1

BMW 3 Series E93 E93N LCI 1 Rear Bumper Antenna Aerial Telephone 6970701

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. P0148459-BRG1

Mini Cooper One R50 Fuel Filler Cover Flap British Racing Green A67

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A0025421419

Mercedes W163 W169 W203 W210 Relay 5-Pin Yellow TYCO A0025421419

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2108207626

Mercedes-Benz C E W202 W210 Front Right Door O/S Control Module A2108207626

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6931687

BMW X5 E70 X6 E71 Fuse Box Power Distribution Electrical Unit Rear 6931687

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7633242

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6949922

BMW 3 5 E46 E61 Touring Amplifier Soft Antenna Suppression Filter 6949922

€23.95

Free delivery - Tue, Nov 25

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Part no. 8514120

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7607705

Mini Cooper One R56 N16 Automatic Gearbox Basic Control Unit EGS 7607705

€90.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7587548-5

Mini Cooper S R55 R56 N14 1.6 174HP ECU Kit DME 7587548 CAS3 + Key Manual

€579.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9240490

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

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2661503033

Mercedes W169 W245 M266 Petrol Engine Wiring Harness Loom A2661503033

€47.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6953424-3

BMW Z4 E85 E86 Positive Battery Cable Plus Pole Lead 6953424

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9177985-1

BMW E93 Cabrio ECU Body Control Module H3 Junction Box 9177985

€32.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7835131

BMW E60 E61 LCI M5 E63 M6 Fuel Injection System Adapter Lead 7835131

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A1699000700

Mercedes A B Class W169 W245 Door Control Module Front Right O/S A1699000700

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A0018209326

Mercedes-Benz E CLS Class W211 W219 Crash Sensor Left Right N/O/S A0018209326

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7800167

BMW E70 LCI E90 E91 LCI F10 F11 N57 Lead Preheater Wiring System Diesel 7800167

€23.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6941503

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

€42.95

Free delivery - Tue, Nov 25

If paid before 14:00

...

Showing 4951-5049 of 11791 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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