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. 6843898

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

€132.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2129004402

Door Module Mercedes W212 E-Class Front Left N/S Control Unit A2129004402

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9337656

Mini Cooper One F55 F56 F57 Sensor For Pedestrian Protection PTS 9337656

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9263468

BMW E81 E87 E90 E91 LCI Professional CD Radio Bluetooth 9263468

€180.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6973117

BMW 1 3 Series E81 E87 E90 E91 E92 E93 Parking Control Module Unit PDC 6973117

€99.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9337880

BMW F20 F22 F30 Rear Electric Power Distribution Fuse Box 9337880

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7600020-7

Mini R55 R56 R57 N12 DME Petrol Engine Control Unit ECU 7600020

€89.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6964607

BMW 1 3 X1 SERIES E81 E87 E90 Control Unit Airbag ECU NO CRASH DATA 6964607

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A6394460446

Mercedes Vito W639 PDC Parking Distance Control Unit Module ECU A6394460446

€47.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6971353

BMW X3 E46 E83 Navigation Computer GPS System DVD Player Unit 6971353

€104.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9807169

Mini Cooper One R56 R55 R58 R60 R61 Air Module Control Unit ECU 9807169

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9387262

FEM Module BMW F20 F21 F22 F30 F31 F32 F36 Body Control Unit ECU LR01 9387262

€113.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7510738

Mini Cooper One R50 R52 R53 Ignition Coil Pack and Leads Set 2122435

€28.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7532878

BMW X5 E53 E60 E61 E63 E65 E70 Valvetronic VVT Control Unit Module 7532878

€66.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 4F0035056B

Audi A6 C6 Head Unit Radio CD Player Control Unit Module 4F0035056B

€222.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9177975

BMW Mini Cooper One R55 R56 R57 Power Folding Wing Mirror Module ECU Control

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A0015425918-ALB

Mercedes W202 C208 W208 W220 Parking Distance Sensor PDC Almandine Black

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A0009062822-1

Mercedes W207 W212 W906 Engine Diesel 200A 14V Alternator Generator LRA03818

€104.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9167198

BMW 1 3 Series E81 E87 E92 E93 Towing Tow Bar Trailer Hook Module Control Unit

€85.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9343259

B+ Distribution Box BMW X3 F25 Battery Power Red Rear Control Unit 9206140

€42.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2129003508

Mercedes W207 W906 Fuel Pump Control Unit Module ECU A2129003508

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7553009

Mini Cooper One R56 Alternator Generator Bosch 150A 7553009

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9177978

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

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9207913

BMW F20 F21 F22 F30 F31 F32 F33 F36 G30 Fan Motor Relay 9207913

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9220695

BMW X5 X6 E70 E71 Control Unit Module Top Rear Side View Camera 9220695

€66.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9381305

Radio Professional BMW F20 F21 F30 F31 CD Player DAB Bluetooth 9381305

€80.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7551559

BMW E60 E61 E63 E64 Ground Cable Alternator Petrol 7551559

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2059007705

Module Mercedes C205 Transmission Drivetrain Control Module Unit A2059007705

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7850995

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

€28.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2038700026

Mercedes W203 ECU Control Unit Crash Impact Sensor Module Airbag A2038700026

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2465400340-1

Mercedes W176 Fuse Relay Box Unit A2465400340 A2469067200

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A6394407810

Wiring Loom Mercedes W639 Vito Cable Front Door Left Right N/O/S A6394407810

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 1K0937125A

Skoda Octavia II Engine Bay Fuse Box 1K0937125A

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6906618

BMW E60 E61 E63 E64 M5 M6 Power Distribution Fuse Box Rear 6906618

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2048210651

Mercedes W204 Air Module Impact Crash Sensor Door A2048210651

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 8574102

BMW F20 F21 F30 F31 F32 Starter Motor Engine Actuator N47N Diesel 8574102

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9278279

Mini R55 R56 LCI Instrument Cluster Speedo Navigation Display Screen 9278279

€104.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 8509722-1

Control Unit Box BMW F20 F21 F22 F30 F31 Engine Ecu Cover 8509722

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2129004407

Display Screen Mercedes W204 W212 Information Navigation Dashboard A2129018103

€56.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9248096

Air Module BMW F01 F02 LCI F06 F10 F11 F13 ECU Control Unit ECU 9248096

€28.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6989069

BMW X3 X5 E53 E60 E61 E83 PDC Parking Sensor Ultrasonic Schwarz Black 6989069

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A1645430062

Mercedes W221 Rear View Reversing Camera Control Unit Module A1645430062

€47.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 1472984

Mini R50 R52 R53 R55 R56 R57 R58 R59 R60 R61 5-Pin Black Relay Wiper 1472984

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9321879

BMW F10 LCI Body Control Module Gateway ECU 9321879

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6906600

Fuse Box Mini Cooper R50 R52 R53 JCW Housing 1509011

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9389657

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9389657

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9286785

BMW X1 E84 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9286785

€37.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7537365

Cable Wire BMW E60 E61 E81 E87 E90 Tubing For Clamp 7537365

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9134666

Seat Module BMW E87 E90 E91 E92 Control Unit ECU 9134666

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A9069014700

Air Module Mercedes W639 W906 Control Unit ECU Air Sensor 0285011060

€132.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6952914

Wiring Loom BMW E65 E66 Cables Rear Bumper PDC 6952914

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9221861

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

€66.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6821135

BMW F20 F21 F22 F30 F31 Head Unit Media DAB Navigation Business Headunit 6821135

€113.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7794908

Preheater System Lead BMW E87 E90 E91 Diesel 7794908

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A1695450001

Mercedes-Benz A B Class W169 W245 Fuse Box Relay Module Unit A1695450001

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9231175

Diversity Antenna Amplifier BMW F30 F32 Rear Window DAB Module Unit 9231175

€28.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9150891

BMW 1 Series E81 E82 E87N LCI E88 Wiring Cable Air Flap PDC Front 9150891

€28.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9216459

BMW 1 3 5 E60 E81 E87 E90 E91 Mini R55 R56 DAB Radio Tuner Module 9216459

€56.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6864208

BMW F20 F21 F22 F30 F31 Air Module ECU ICM Control Unit 6864208

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9234421

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

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A0051511301-2

Starter Motor Mercedes W203 W210 W211 Diesel Engine Actuator A0051511301

€32.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2079011700

Airbag Module Mercedes W204 W207 Air Bag SRS Control Unit ECU A2079011700

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9154331

BMW MINI Clubman R55 Cable Wiring Loom Splitdoor Split Door Rear Right O/S

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9131779

BMW E87 ECU Body Control Module L2 JBBFE PL2 61359131779 9131779

€28.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 8K0907063N

Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907063N

€51.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9226885

BMW F20 F21 Aerial Antenna Amplifier Diversity DAB 9226885

€28.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9153802

BMW X5 E70 Footwell Light Module Control Unit ECU FRM II NSW Lear 9153802

€146.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6901469

BMW E60 E87 E90 F10 F30 Relay Electrical Unit Black 4 Pin Tyco 6901469

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6935599

BMW 1 3 Series E81 E87 E90 PDC Parking Ultrasonic Sensor Red Japanrot Japan Red

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2048706826

Mercedes W204 ECU Control Unit Sensor Module Airbag A2048706826

€23.95

Free delivery - Wed, Jan 21

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 - Wed, Jan 21

If paid before 14:00

Part no. A2059007218

Automatic Closing Motor Mercedes S205 Estate X253 Trunk Lid A2059007218

€47.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9244426

BMW X5 E70 Rear Bumper PDC Cables Wiring Loom Set 9219647

€56.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9210147

BMW F20 F30 Central Bass Speaker Stereo Subwoofer Left N/S 9210147

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6886185

ICM Module BMW F20 F21 F30 F31 Crash Control Unit Airbag ECU 6886185 0265020864

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9133913

BMW Z4 E89 Roadster Convertible HiFi Speaker System Amplifier 9133913

€75.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 8V0035874B

Audi A3 8V Multimedia Radio Sat Nav CD Player Head Unit 8V0035874B

€237.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9346799

BMW F01 F02 LCI F10 Diversity Aerial Antenna Amplifier DAB 9346799

€47.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7490465

BMW F10 F20 F30 F31 Mini F55 F56 Seat Heating Module Control Unit ECU 7490465

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7793201

BMW 3 X5 X6 Series E70 E71 E90 E91 E92 E93 Lead Preheater System 7793201 Diesel

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6798937

BMW F11 Touring Air Suspension Control Unit ECU Rear Axle Module 6798937

€66.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6819332

Control Unit Module BMW F20 F21 F30 F31 F32 Rear Body REM 6819332

€32.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6940237

Wiring Cable AUX BMW E90 E91 E92 E93 Loom Kit Jack Plug Input 375MM 6940237

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9264573

BMW 3 Series E91 LCI ECU Body Control Module Junction Box H2 9264573

€37.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 6858017

BMW F10 F11 LCI Control Unit EMF Module 6858017

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9280185

Air Module BMW F10 F11 F01 F02 F03 LCI Control Unit ECU 9280185

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9229875

BMW 3 Series E90 LCI Body Control Module H1 PL2RR JBBFE IIIR 61359229875 9229875

€75.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A1695401006

Mercedes W169 W245 Rain Light Sensor Control Unit Wiring A1695401006

€28.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9233034-SCG

PDC Parking Sensor BMW X5 E70 F10 F11 F12 Ultrasonic Sensor Space Grey 9231283

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 9116801

Hands Free Module BMW E60 E90 Everest Motorola Non GPS Phone 9116801

€28.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 4F0959651

Audi A6 C6 Front Impact Sensor Safety Crash Detection Module Unit 4F0959651

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 8570849

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

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2129004014

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

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7533103

Mini Cooper S R52 R53 W11 Engine Wiring Loom Harness 7533103

€66.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2469009413-1

Mercedes W176 W246 Control Unit Body Control Module ECU A2469009413

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 2755516

Battery Mounting Bracket Mini Cooper R55 R56 R57 R60 R61 Clamp Bolt Holder

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7571142

Plus Cable Wiring Mini Cooper R55 R56 R57 Battery Lead Power Positive 7571142

€23.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. A2129005327

Radio Head Unit Mercedes W212 COMAND Navi CD DVD Player Changer A2129005327

€277.95

Free delivery - Wed, Jan 21

If paid before 14:00

Part no. 7127282

BMW X5 Series E70 Rear Trunk Battery Cover Tray Storage Box 7127282 51477127282

€28.95

Free delivery - Wed, Jan 21

If paid before 14:00

...

Showing 298-396 of 12714 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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