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. A2465453740

Mercedes-Benz A B Class W176 W246 Rear Fuel Pump Control Unit Bracket Holder

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A6395406609

Wiring Loom Vito Mercedes W639 Front Door Cable Left Right N/O/S A6395406609

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2185409606

Mercedes C218 Parktronic Parking Sensor Wiring Cable Rear PDC A2185409606

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1718300272

Mercedes A B ML Class W166 W169 W245 Interior Temperature Sensor A1718300272

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A1698209126

Door Module Mercedes W169 W245 Rear Left N/S Control Unit A1698209126

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2909003001

Mercedes C238 E53 4matic Transfer Case Torque Distribution Control ECU

PLN 1,139.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A6519007500-16

Mercedes W204 C220 CDI 651.911 Engine Control Unit ECU A6519007500 Automatic

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2229009211-1

Mercedes W207 W212 Tuner Box Digital Satellite Radio Control Unit A2229009211

PLN 284.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 307873750AA

Mercedes W176 Steering Wheel Wiring Loom Harness 307873750AA

PLN 93.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2429007001

Mercedes W176 W204 W212 Telematics Communication Control Unit Module A2429007001

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2129008224

Headlight Control Module Mercedes W207 W212 Unit A2129008224

PLN 379.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0038207426

Mercedes W221 Door Module Control Unit Rear Right O/S A0038207426

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2468201915

AUX Jack Port Mercedes C117 W246 W176 Wiring Loom Cable Harness A2468201915

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2128270228-PAL

Mercedes W212 Aerial Fin Roof Antenna Shark Palladium Silver - 792 A2128270228

PLN 75.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1665400180

Mercedes W166 Fuse Box Relay Cover Shield Cap Trim A1665400180

PLN 56.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A1779005109

Door Module Mercedes C118 W177 H243 Front Left N/S Door Control A1779005409

PLN 313.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2469005010

Mercedes W176 W246 Parktronic Parking Control Unit Module ECU A2469005010

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2054404136

Mercedes W205 Battery Lead Wiring Loom Cable Hybrid Cable Harness A2054404136

PLN 189.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1775405101

Door Wiring Mercedes V177 Rear Door Right Left N/O/S Harness Wire A1775405101

PLN 66.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2055402850

C205 Fuse Box Mercedes C205 Electrical Interior Relay Fuse Socket Control A2055402850

PLN 56.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2709000900-4

Mercedes W176 A45 4Matic M133.980 381HP Engine Control ECU A2709000900 Automatic

PLN 2,374.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1635401041

Mercedes-Benz M ML W163 Ground Earth Strap Cable Wiring A1635401041

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A1725402513

Mercedes SLK R172 Rear Window Heating Cable Loom Heat Wiring Harness A1725402513

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A6401502579

Mercedes W169 200CDI OM640.941 140HP Engine Control Unit Module ECU A6401502579

PLN 569.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2218207389

Mercedes W221 Seat Headrest Display Monitor Rear Entertainment Unit A2218207389

PLN 902.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2055406921

Battery Wiring Mercedes X253 Diesel OM651 Alternator Harness Cable A2055406921

PLN 80.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2465400340-1

Mercedes W176 Fuse Relay Box Unit A2465400340 A2469067200

PLN 85.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2649000700-2

Mercedes W205 C 200 264915 264.915 184HP Engine ECU Module A2649000700 Automatic

PLN 1,044.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1729006503

Mercedes SLK R172 Roadster Folding Roof Module Vario Control Unit A1729006503

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2124407952

Battery Cable Mercedes W212 W218 Negative Lead Terminal Harness A2124407952

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2129004901-1

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129004901

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2059006337

Safety Module Mercedes S205 Airbag Belt Tensioner Control Module SRS A2059006337

PLN 807.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2479001416

Mercedes CLA C118 W177 W247 4matic AWD Module Control Unit A2479001416

PLN 351.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0009068706

Mercedes W205 C43 Alternator Generator VALEO 200A 3.0 Petrol A0009068706

PLN 379.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0048273745

iPod Interface Mercedes W204 W207 W212 Module Control Unit ECU A0048273745

PLN 123.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1715405045

Mercedes SLK R171 Central Gateway Module ECU Control Unit A1715405045

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0045467740

Mercedes W447 Drive Train Sensor Can Distributor A0045467740

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2129060605-1

Mercedes W212 Fuse Box Rear Relay Control Unit Electric Module SAM A2129060605

PLN 379.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2709002100-1

Mercedes W176 W246 A180 B180 BlueEFFICIENCY 270.910 122HP Engine ECU A2709002100

PLN 1,424.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2215402462

Mercedes W221 SAM Fuse Box Comfort Control Module Unit ECU A2215402462

PLN 189.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2124400414

Mercedes C207 W207 W212 Fuel Pump Module Diesel Control Unit ECU A2124400414

PLN 75.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A6394404906

Mercedes-Benz Vito W639 Loudspeaker Cable Wiring Loom Harness A6394404906

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A1185402504

Mercedes C118 Door Harness Rear Left N/S Door Wiring Loom A1185402504

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1668201089

Mercedes W176 Radio Aerial Antenna Amplifier Booster Unit Module A1668201089

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2218703086

Mercedes W221 Seat Module Front Right O/S Memory Control Unit A2218703086

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2535407830

Mercedes C253 AMG Rear Bumper PDC Wiring Parking Sensor Loom Harness A2535407830

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2044409005

Mercedes W204 Battery Wiring Starter Alternator Wiring Harness A2044409005

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0015454416

Mercedes CL203 M271 Automatic Gearbox EGS Control Module Unit ECU A0015454416

PLN 123.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1685405008

Mercedes A-Class W168 Door Cable Harness Wiring Loom Front Right A1685405008

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2535400601

Mercedes X253 Starter Motor Wiring Harness Cable A2535400601

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2661538479-1

Mercedes W169 A150 Petrol M266.920 95HP Engine ECU Kit A2661538479 Automatic

PLN 712.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2789060600

Mercedes W166 R172 W205 C207 W212 C216 Engine Starter Motor 12V A2789060600

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0009053006

Battery Wire Mercedes W205 Negative Cable With Battery Sensor 48V A0009053006

PLN 332.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2129003414

Fuse Box Mercedes C204 W204 Front Relay Control Unit Module SAM A2129003414

PLN 455.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1779061002

Fuse Box Mercedes W177 Power Distribution Junction Relay Unit A1779061002

PLN 104.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2749003900

Mercedes Vito W447 Electronic Control Unit Module ECU A2749003900

PLN 949.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1679008406

Mercedes W167 W177 W247 Ignition Engine Control Unit Module A1679008406

PLN 712.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2219007701

Mercedes W221 Door Module Rear Right Left N/O/S Control Unit A2219007701

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1408207126

Mercedes C140 Blinker Hazard Trailer Relay Module Control Unit A1408207126

PLN 949.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1679008309

Mercedes W177 W247 Telematics Module Communication Control Unit A1679008309

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2465404300

Mercedes W176 Door Harness Loom Cable Wiring Rear Right A2465404300

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2139009406

Mercedes W213 Display Screen Information Navigation Dashboard A2139009406

PLN 332.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A4479001118

Mercedes W447 Front Air Module Control Unit ECU A4479001118

PLN 1,899.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2469008813

Module Mercedes W176 A45 AMG M133 4matic All Wheel Drive Control A2469008813

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2044402232

Mercedes W204 W207 Battery Cable Positive Wiring Harness Loom A2044402232

PLN 75.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1645408101

SAM Control Module Mercedes W164 W251 Comfort Fuse Box Unit A1645408101

PLN 949.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1718701410

Mercedes SLK R171 Alarm Anti Theft System Control Module Unit Roof A1718701410

PLN 473.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2465408109

Door Wiring Mercedes W176 Loom Cable Rear Left Right N/O/S A2465408109

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A0009058000

Windscreen Camera Mercedes W207 W221 Front Windshield Module Unit A0009058000

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2215408045

TPM Module Mercedes W221 S500 C216 Tire Pressure System Module RDK A2215408045

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2239052400

Mercedes W177 W223 W247 Crash Impact Deployment Sensor Unit A2239052400

PLN 75.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1679008311

Mercedes C238 Door Control Unit Module ECU Front Left N/S A1679008311

PLN 123.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0535450226

Mercedes Sprinter W906 Fuse Box Connector Plug Socket A0535450226

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A6519007401-3

Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine ECU A6519007401 Key

PLN 807.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2479004505-1

Mercedes Vito W447 Sprinter W907 W910 Telematics Module Control Unit A2479004505

PLN 189.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0005465402

Mercedes C117 W176 W246 Positive Battery Terminal Cover Cap Trim Red A0005465402

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A6519002803-3

Mercedes Vito W447 114 CDI OM651.950 Engine ECU Kit Ignition + 2 Key A6519002803

PLN 1,899.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A6511508300

Engine Wiring Mercedes W910 OM651.958 Diesel Harness Loom Cable A6511508300

PLN 569.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2059067200

Mercedes W205 S205 W213 Fuse Box Front Relay Control Unit Module A2059067200

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2829003300

Mercedes W177 A200 163HP M282.914 Engine Control Unit ECU A2829003300 Automatic

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1635450440

Mercedes-Benz M-Class ML W163 Holder Bracket Engine Control Unit A1635450440

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2124404851

Mercedes W212 Rear Bumper PDC Wiring Parking Sensor Loom Harness A2124404851

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0009050038

Mercedes W212 Multi-Purpose Windscreen Camera Control Unit Module A0009050038

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1669000318

Mercedes-Benz A B Class W176 W246 Front Left N/S Door Control Unit Module ECU

PLN 123.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0035423019

Power Relay Control Mercedes W176 W246 Module 4 Pin 12V 20A A0035423019

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A1779005505

Door Module Mercedes W177 W247 Rear Left Right N/O/S Control Unit A1779005505

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A6519007500-11

Mercedes W204 C 200 CDI 651.913 136HP Engine Unit ECU Kit A6519007500 Key Lock

PLN 664.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2075454440

Mercedes-Benz E-Class A207 Convertible Control Unit Module Bracket Trunk

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2055408040

Mercedes W205 Front Door Electric Wiring Harness Loom Cable Left N/S A2055408040

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A6519005301-7

Mercedes W204 C250CDI 204HP OM651.911 Engine ECU Kit A6519005301 Automatic

PLN 807.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1645400762

Mercedes W164 W211 C219 Tyre Pressure Monitor Control Unit Module A1645400762

PLN 56.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A6421507100

Mercedes W164 ML350 OM642 4-Matic 224HP Engine Control ECU A6421507100 Automatic

PLN 664.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2535402128

Mercedes X253 Starter Motor Wiring Harness Cable A2535402128

PLN 284.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2465451440

Mercedes W176 Fuse Relay Box Cover Cap Top Trim Lid A2465451440

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2129004014

Mercedes W204 W212 Front Door Module Control Unit Module Left N/S A2129004014

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2069055100

Mercedes C118 W167 W177 W206 W247 Stereo Amplifier Harman Kardon A2069055100

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A9067601204

Mercedes Sprinter W906 Front Left Door N/S Handle Bowden Pull Cable A9067601204

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2055403103

Alternator Starter Wiring Harness Mercedes W205 GLC C253 OM651 A2055403103

PLN 123.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0025409117

Mercedes W221 Blind Spot Radar Distance Sensor Rear Left Right N/O/S A0025409117

PLN 1,139.95

Free delivery - Tue, Jan 13

If paid before 14:00

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Showing 1189-1287 of 3212 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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