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.

More information

Make

Category

Subcategory

Condition

In Stock

Price

Products in promotion

Part no. 9496815

Front Impact Sensor BMW F70 G05 G14 G15 G29 Safety Crash Module Unit 9496815

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F1971687AL

Audi A6 C6 Rear Left N/S Door Harness Cable Loom 4F1971687AL

PLN 222.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2059007143

SAM Module Mercedes W205 Trunk Rear SAM Control Module A2059007143

PLN 408.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2069055100

Mercedes C118 W167 W177 W206 W247 Stereo Amplifier Harman Kardon A2069055100

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2215408609

Mercedes W221 Rear Door Wiring Harness Cable Left N/S A2215408609

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6927270

BMW 5 Series E60 Seat Control Unit Module Left Right N/O/S Temic 6927270

PLN 132.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2229001814

Door Module Mercedes W205 X253 Rear Left N/S Control Unit A1698209126

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2129005912

Mercedes W204 Fuse Box Relay SAM Control Unit Module A2129005912

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6839769

KaFAS Module BMW F10 F20 F30 Mini F55 F56 Assist Camera Control Unit 6839769

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8693361

BMW F87 M2 Engine Control ECU Kit DME 8693361 N55 370HP Key Dual Clutch

PLN 3,324.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7532878

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

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2049012704

Mercedes W204 ECU Control Unit Crash Impact Sensor Air Module A2049012704

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0959393

Audi A3 8V Control Unit Central Door Locking Module ECU 5Q0959393

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8594489

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

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9354289

BMW F45 F46 Mini F60 Sensor For Pedestrian Protection PTS Control Unit 9354289

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9281722

BMW E93 Cabrio Convertible Folding Top Roof ECU Module CTM 9281722

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0910289N

Comfort Module Audi A6 S6 RS6 C6 4F Convienience Unit ECU 4F0910289N

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8635815

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

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9222071

BMW F07 BCM Body Control Module Unit Controller 9222071

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6948054

BMW Z4 E85 Front Door Wiring Loom Cable Harness Left N/S 6948054

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9142092

Bluetooth Antenna BMW X1 X3 Z4 E84 E89 F01 F02 F03 F25 Amplifier AMP 9142092

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9459673-1

Seat Module BMW X4 F26 F20 F30 Front Driver Side Control Unit ECU 9250421

PLN 313.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3455305-1

2 x Mini R57 R58 R59 DWA Door Alarm System Module Control Unit Set 3455305

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 1K0971391ES

VW Golf Mk5 Seat Well Cable Front Left N/S Wiring Loom Harness 1K0971391ES

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9257152

Telematics Bluetooth BMW F10 F20 F22 F30 Combox GPS Control Unit Module 9257152

PLN 241.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1698206726

Mercedes-Benz W245 ECU Control Unit Sensor Module Airbag A1698206726

PLN 56.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7317408

BMW F10 F11 LCI F30 F31 Xenon Headlight Ballast Control Unit 7317408

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9186655

BMW 3 Series E92 Front Right O/S Driver Side Door Wire Wiring Loom 9186655

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6934096

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

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2218210197

Mercedes W221 Cover Wiring Cable Front Door Protection Seal Sleeve A2218210197

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2079013700

Mercedes-Benz E-Class W207 Windscreen Windshield Rain Sensor Control Unit

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9065400041

Mercedes Sprinter W906 Battery Cable Negative Lead Wiring Harness A9065400041

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2059067200-1

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

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1779005409

Door Module Mercedes C118 W177 H243 Front Right O/S Door Control A1779005409

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0019820823

Mercedes Sprinter W907 4-Pin Relay V23074-H1605-X123 A0019820823

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1669004002

Door Module Mercedes C117 W176 W246 Front Left N/S Control Unit A1669004002

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 2753025

Mini Cooper R55 R56 R57 R58 Wiring Heated Seat Loom 2753025

PLN 28.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7641659

Engine Wiring BMW F10 F20 F30 N20 125i 328i 528i N20 Harness Module 7641659

PLN 427.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009055504-TNG

Mercedes W205 W212 Front Rear PDC Parking Distance Sensor Tenorite Grey - 755

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A0465456628

Mercedes W203 W204 W218 Front Seat Wiring Loom Plug Connector A0465456628

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6920469

BMW E65 E66 E67 Sensor A-pillar Right Airbag 65776920469 6920469

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0959795Q

Audi A5 B8 8T Door Module Control Unit Left Right N/O/S 8T0959795Q

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 55568953

Opel Insignia A 2.0 Cdti Oil Level Crankshaft Sensor Wiring 55568953

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6957759

BMW E60 E61 E63 Driver Side Door Air Module Control Unit Module 6957759

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5A0BD89

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

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7394466

BMW F10 F11 X5 F15 LCI F32 F33 Adblue Module Control Unit ECU SCR 7394466

PLN 332.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1636801080-1

Mercedes-Benz M-Class ML W163 1 Cover Footwell Fuse Box Trim Right A1636801080

PLN 65.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7644251

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

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9226888

BMW 1 Series F20 F21 Antenna Aerial Noise Suppression Filter 9226888

PLN 23.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 04L911021

Audi A5 8T 2.0 TDI CNHA Diesel Engine Motor Starter 04L911021

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2469052602

Dashboard Panel Mercedes W176 W246 Switch Dynamic Select Start/Stop A2469057902

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3454167-1

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

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6941445

BMW E63 E64 Bluetooth Cable Hands Free Telephone Microphone Unit 6941445

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1635400734

Mercedes-Benz M ML W163 Rear Left Right Door Wiring Loom Harness A1635400734

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6821970

Mini Cooper One F54 F55 F56 F60 ECU Body Domain Controller BDC Module 6821970

PLN 949.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2115405535

Mercedes W211 W219 Earth Ground Cable Battery Wiring Loom Engine A2115405535

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9187647

BMW E82 E90 E92 LCI Antenna Amplifier Diversity 9187647

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1715450032

Mercedes SLK R171 PDC Parking Distance Control Unit Module Sensor A1715450032

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0937084CJ

Audi A3 8V 1.6 TDI DBKA BCM Body Control Module Unit ECU 5Q0937084CJ

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8633997

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

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2049009410

Mercedes W204 CD Player Radio Stereo Navigation Sat Nav Head Unit A2049009410

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009003206

Mercedes W205 W222 Fuel Pump Module Control Unit A0009003206

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0959795N

Door Module Audi A4 B8 A6 C6 Rear Unit Control ECU Left N/S 4F0959795N

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9229007

BMW F10 Antenna Amplifier Diversity 868 MHZ 9229007

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1679004712

Bluetooth Module Mercedes W205 W213 W222 W238 Control Unit ECU A1679004712

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0131545602

Mercedes W204 W212 Alternator Generator M272 180A 14V Petrol Engine A0131545602

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 2757044

Mini R55 R56 R57 R58 Right O/S Electric Window Lifter Motor 2757044

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6G9T-14B192-DA

Ford Galaxy Mondeo Transit Relay 4-Pin Black FoMoCo Unit 6G9T-14B192-DA

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8512292-2

BMW E90 E91 LCI N47N 316d 116HP Engine ECU Kit DDE 8510832 + CAS3 + Key Manual

PLN 569.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9352786

BMW F33 F83 M4 Convertible Folding Top Roof ECU Module Control Unit CTM 9352786

PLN 712.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4G8959792G

Audi A6 C7 Front Left N/S Door Lock Control Module Unit ECU 4F0959792T

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0953549A

Audi S6 C6 Steering Column Wiper Switch Stalk Cruize Control 4F0953549A

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2049005601

Mercedes W204 S204 Estate SAM Control Unit Module Rear A2049005601

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4G8959793A

AUDI A7 4G8 Door Control Module Front Left N/S Driver Side 4G8959793A

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1648209385

Mercedes ML W164 Door Module Front Left N/S Control Unit Module A1648209385

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8590045

BMW G20 G21 G01 G02 B47B B47D Engine Injector Module Wiring Harness 8590045

PLN 160.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9322122-2

Display Screen BMW F20 F21 F22 Central Information Sat Nav Monitor 6,5" 9322122

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1S0919275D-MRE

Audi A5 8T PDC Parking Distance Control Sensor 1S0919275D Misano Red Pearl - Z3M

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9075402087

Mercedes W907 Starter Wiring Battery Alternator Cable Harness Loom A9075401305

PLN 227.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2035451303

Mercedes CL203 W203 Fuse Box Cover Engine Bay Relay A2035451303

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7607705

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

PLN 331.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 2706050200

Lexus LS400 1UZFE V8 Petrol Engine Alternator Generator Denso 2706050200

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2469067100-1

Mercedes W176 W246 C117 Fuse Relay Box Unit Cables Wiring Loom A2469067100

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6819333

BMW F30 Rear Body Control Unit Module V2 6819333

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9159795

BMW X5 X6 E70 E71 Control Unit Air Module Bag ECU Unit Bosch 9159795

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9289385

BMW F10 F34 GT Telematics Module Bluetooth Telematik Control Unit 9289385

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7835892

BMW 5 6 Series E60 E61N M5 E63 M6 Cable Starter Base B+ Engine Battery 7835892

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A4475406777

Alternator Wire Mercedes Vito W447 Battery Alternator Cable A4475406777

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2124407038

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124407038

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9176878

BMW E81 Body Control Module Unit BCM ECU L2 9176878

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9069000401

Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9069000401

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6956750

BMW E87 Control Unit PDC Parking Sensor Module Nautikblau Blue - A21 6956750

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9136726

BMW Mini Cooper One R55 R56 Multifuse B Battery Power Distributor 9136726

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139005613

Mercedes W213 Front Door Module Right O/S Control Unit A2139005613

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9215184

BMW E60 E87 E90 E91 Hands Free Electronics Charging Module MULF2 9215184

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6902285

BMW E39 E87 E90 E91 Trigger Contact PDC Sensor Tweeter Gong 6902285

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9131649

Driver Seat Cable BMW E81 E82 E87 E88 Sensor Mat Wiring 9131649

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7810860-1

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

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9389286

Door Wiring Mini Clubman F54 Front Passanger Side N/S Door Harness 9389286

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

...

Showing 298-396 of 11489 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 .

used parts volkswagen car parts mercedes used car parts cheap car parts audi auto parts spare parts genuine used audi parts bmw starters, alternators, ecus & wiring mercedes starters, alternators, ecus & wiring mini starters, alternators, ecus & wiring audi starters, alternators, ecus & wiring volkswagen starters, alternators, ecus & wiring