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. 9153802

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

PLN 474.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9173686

BMW X3 Z4 E83 E85 E86 Radio Business CD Player 9173686

PLN 284.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7790996

Mini One D R50 W17 Base B+ Battery Terminal Point Engine Compartment 7790996

PLN 47.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 8631672

BMW 1 3 Series F20 F30 LCI M140i 340i Engine Gearbox Module Wiring Loom Harness

PLN 663.95

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

PLN 142.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9197177

BMW E82 Footwell Light Module Control Unit ECU NSW PL2 FRM II 9197177

PLN 465.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2118203375

Antenna Booster Mercedes W211 Rear Boot Lid Tailgate Amplifier A2118203375

PLN 47.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A9079002407

Mercedes W907 Electronic Ignition Module Control Unit A9079002407

PLN 607.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2135400329

Mercedes X253 Electrical Wiring Harness Cable Hybrid A2135400329

PLN 379.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7648785

BMW i3 i01 Battery Cell Module Supervision Circuit Control Unit 7648785

PLN 142.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2218200210

Mercedes W221 Seat Occupancy Mat Control Unit Sensor A2218200210

PLN 142.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8T0971365C

Audi A5 8T Seat Cable Front Left Right N/O/S Wiring Loom Harness 8T0971365C

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 6875997

ICM Control Unit BMW F01 F02 LCI F06 F10 F11 F13 ECU Module 6875997

PLN 113.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A0045467540

Mercedes W204 W221 Distributor Box Block Control Unit Relay A0045467540

PLN 61.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7561834-13

BMW E87 E90 120i 320i N46 150HP Engine Control DME Module 7561834 Automatic

PLN 664.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 2757722

Mini Cooper R57 R58 R59 Control Unit Module Bracket Holder PGS 2757722

PLN 37.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 8576484

BMW X3 G01 G20 G21 G30 G31 Starter Acoustic Vibration Plug 8576484 8588900

PLN 28.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A2049009201

Parktronic Module Mercedes W204 PDC Parking Sensors Control Unit A2049009201

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A2218208202

Mercedes W221 Front Centre Dashboard Tweeter Speaker A2218208202

PLN 61.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9345330

BMW X3 F25 Body Control Module ECU Junction Box JBBFE III V8 9345330

PLN 237.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2049005410

Mercedes W204 Sat Nav Radio CD Player Radio Head Unit A2049005410

PLN 189.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9150883

BMW 3 E93 Convertible Boot Trunk Lid Tailgate Wiring Loom Harness Cables 9150883

PLN 189.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9123290

BMW E81 E87 E90 MULF Hands Free Electronics Control Module 9123290

PLN 237.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 226334803R

Renault Trafic 3 Vauxhall Vivaro B 1.6 DCI Engine Wiring Loom Cable 226334803R

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 7799855-2

BMW 1 3 5 Series E60 E87 E90 M47N2 120d 320d 520d ECU Kit DDE CAS2 Key 7799855

PLN 1,139.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7634061

BMW F10 Engine Transmission Module Cable Loom Wiring Harness 7634061

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 5Q0955547C

Skoda Octavia Fabia Mk3 VW Polo Mk6 Rain Sensor Control Unit Module 5Q0955547C

PLN 61.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 5G0971104D

VW Volkswagen Golf Mk7 Wiring Loom PDC Rear Harness Parking Sensor 5G0971104D

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 9291387

BMW X5 E70 X6 E71 Side View Camera Top Rear Control Unit Module 9291387

PLN 237.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2129004901

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129004901

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A2465450500

Mercedes-Benz A B W176 W246 Gearbox Control Module Bracket Holder A2465450500

PLN 56.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A2469002603-1

Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

PLN 42.95

Delivery - Tue, Nov 25

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, Nov 25

If paid before 14:00

Part no. 914014H161

Hyundai H-1 Fuse Box Front Relay Engine Control Unit Module ECU 91401-4H161

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 94520-4H0004X

Hyundai H-1 Dashboard Panel Digital Clock Watch Unit 94520-4H0004X

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6917552-BRG

Mini R50 R52 R53 Rear PDC Ultrasonic Parking Sensor British Racing Green

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 899543000

Porsche Boxster 986 A/C Air Conditioning Relay Control 12V 10A 899543000

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 8631727-3

BMW Z4 E89 Roadster 18i N20 156HP ECU Kit DME CAS3 + Key 8631727 Manual

PLN 2,374.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9168336

BMW X1 E84 Diversity Aerial Antenna Amplifier DAB 9168336

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7789225

BMW E65 E66 730d M57N Diesel Cable Starter-Base B+ 7789225

PLN 66.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9286129

BMW X3 F25 Body Control Module ECU Junction Box JBBFE III V9 9286129

PLN 142.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9124585-SED1

BMW E87 E90 PDC Parking Sensor Ultrasonic Set x4 Sedona Rot - A79

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. F20 F30 PLUG SOCKET LOOM PDC

PDC Plug BMW F20 F22 F30 F32 Loom Socket Parking Sensor Wiring Harness

PLN 95.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9270392-2

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

PLN 42.95

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

PLN 28.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A2469004512

Mercedes-Benz A M Class W166 W176 Parking Brake Control Unit Module ECU

PLN 70.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2044407441

Earth Ground Cable Mercedes W204 W207 W212 W218 Battery Wiring Loom A2044407441

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 6807487

Fuse Box BMW G20 X3 G01 Power Distribution Control Unit Module Front 6807487

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A1695406945

Mercedes SLK R171 Gateway Control Unit Gateway Module ECU A1715405145

PLN 142.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6940432

Mini Cooper R50 R53 Adapter Lead With Diode EHPAS Cable Wiring 6940432

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2129005327

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

PLN 1,139.95

Free delivery - Tue, Nov 25

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, Nov 25

If paid before 14:00

Part no. 8635813

Engine Wiring BMW F20 F30 F31 LCI B38 Valvetronic Servomotor Cable Loom 8635813

PLN 66.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9133083

BMW E81 E87 E90 E91 E92 E93 6-disc CD Changer With Magazine 9133083

PLN 189.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 04L906021BQ

Audi A4 B8 Engine Control Unit Module ECU 2.0 TDI CNHC 163HP 04L906021BQ

PLN 237.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9242204

Wiring BMW F12 F13 F06 Cable Set For Electric Parking Brake Handbrake 9242204

PLN 189.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9193745

BMW 3 5 E60 E61 E90 LCI Display Screen 8.8" Monitor Sat Nav 9193745

PLN 378.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6992830

BMW F10 F20 F30 Mini F55 F56 KaFAS Camera Front Control Unit Module ECU 6992830

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6935599

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

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 7PP941572AC

Audi A5 F5 Xenon Headlight Resistor Ballast Relay Module Unit 7PP941572AC

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9181454

BMW X1 E84 Aerial Antenna Noise Suppression Filter 9181454

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 8K0907801N

Audi A5 8T Electric Hand Parking Brake Control Unit ECU 8K0907801N

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A0005401203

Mercedes GLC 300e X253 Coupe Hybrid Electrical Battery Wire A0005401203

PLN 61.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6794618

EMF Actuator BMW F10 F12 Brake Caliper Parking Brake Unit Electric 6794618

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 4F0959793R

Audi A6 C6 Door Module Front Driver's Side Control Unit ECU 4F0959793R

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A2055404913

Mercedes W205 Wiring Cable Harness Center Console Ambient Lightning A2055404913

PLN 94.95

Free delivery - Tue, Nov 25

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, Nov 25

If paid before 14:00

Part no. 8K1907115M

Audi A4 B8 A5 8T 1.8 TFSI CDHB 160HP Engine Control ECU 8K1907115M Automatic

PLN 465.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9483099

Mini Cooper One F55 F56 F57 Parking Assistant Control Unit Module 9483099

PLN 237.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9360501

Mini F54 F55 F56 F57 F60 Rear Electric Power Distribution Fuse Box 9360501

PLN 75.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6957762

BMW 5 6 Series E60 E61 E63 Passenger Side Door Airbag Control Module 6957762

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A0035420219

Relay Mercedes W639 W906 5-Pin Black 12A A0035420219

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 8255704

BMW X3 X5 E53 E63 E83 Front Seat Belt Tensioner Buckle Connector Cable 8255704

PLN 61.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7540369

BMW E46 N46 Wiring Harness Engine Gearbox Module Loom Cable 7540369

PLN 379.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2711534591-1

Mercedes W203 C180 Kompressor M271 Engine Module ECU Kit A2711534591 Key Lock

PLN 949.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7853460

Gearbox Wiring BMW F87 M2 N55 Engine Automatic Loom Harness Cables 7853460

PLN 807.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9388179

Mini Cooper One F54 F55 F56 F60 ECU Body Domain Controller BDC Module 9388179

PLN 617.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 4M0959651

Front Crash Impact Audi A4 B9 A5 F5 Air Module Sensor Unit 4M0959651

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 6803169

Air Con Module BMW F20 F30 F31 Mini F55 F56 Air Conditioning A/C Unit 6803169

PLN 113.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 1J0973332A

Audi RS4 B8 Cable Loom Wiring Plug Socket 2 Pins 1J0973332A

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. 9264974

BMW E81 E82 E87 E88 E90 E91 Front Seat Control Module 9264974

PLN 332.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 7254970

BMW E92 LCI Grille Trim Panel Chrome Frame Front Right O/S 7254970

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A2139008730

Mercedes C253 W177 W205 W247 Gearbox Module Control ECU Automatic A2139008730

PLN 142.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8588448

BMW 1 3 Series F20 F21 F30 LCI Wiring Harness Engine Glow Plug Module 8588448

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A0045468440

Mercedes W177 Power Distributor Connector Plug Unit A0045468440

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A6519007500-7

Mercedes A207 C207 E220 CDI 651.911 BE Engine ECU Kit Ignition + Key A6519007500

PLN 617.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 8W0907159J

Audi A4 B9 A5 F5 Impact Sound Actuator Control Module 8W0907159J

PLN 170.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A1775405520

Mercedes W177 Front Door Harness Loom Cable Wiring Left Right N/O/S A1775405520

PLN 237.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9875929

BMW F20 F21 F22 F23 LCI DAB Navigation Head Control Unit Module Business 9875929

PLN 712.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 9366407

BMW F20 F21 F30 F31 F32 Body Comfort Module FEM ECU LR01 Control Unit 9366407

PLN 664.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A1665402709

Mercedes W166 Automatic Gearbox Wiring Loom Harness Cable A1665402709

PLN 170.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 5A70A69

BMW F40 Parking Module Comfort Control Unit ECU 5A70A69

PLN 474.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 4H0959792F

VW Touareg 7P Front Door Control Module Unit ECU Passenger Side 4H0959792F

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 6932452

BMW 5 6 Series E60 E61 E63 E64 Power Distribution Electrical Fuse Box 6932452

PLN 55.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A2229004320

Telematics Module Mercedes C238 Communication Blutooth Control A2229004320

PLN 265.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A0009063003

Mercedes W213 Alternator Generator 200A 14V A0009063003

PLN 569.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. A0009005517

Mercedes W177 W205 W238 W257 Gearbox Control Unit Module ECU A0009005517

PLN 427.95

Free delivery - Tue, Nov 25

If paid before 14:00

Part no. 02Z911024H

Volkswagen Passat B7 Starter Motor Actuator TDI Diesel Engine 02Z911024H

PLN 42.95

Delivery - Tue, Nov 25

If paid before 14:00

Part no. A1031550435

Mercedes W124 M103 Bracket Alternator Mount Holder Support A1031550435

PLN 94.95

Free delivery - Tue, Nov 25

If paid before 14:00

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Showing 4456-4554 of 11506 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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