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. 9311849

BMW F20 F21 Air Conditioning A/C Climate Control Unit Module ECU 9311849

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1698206626

Mercedes W169 W245 Airbag System Control Unit Module ECU A1698206626

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1179001802

Mercedes W176 Air Module Belt Locking System Control Unit Module ECU

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0025428919

Relay Mercedes W176 W246 5-Pin Yellow Hella 12V A0025428919

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1728200815

Mercedes W204 C207 Centre Console Aux Port Socket Plug Terminal A1728200815

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9134666

Seat Module BMW E87 E90 E91 E92 Control Unit ECU 9134666

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9239985

BMW F10 F11 Control Unit ECU Module Airbag Safety Unit 9239985

€23.95

Free delivery - Thu, Dec 18

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Part no. 9329702

BMW F20 F30 F31 REM Rear Electronic Module Fuse Box Control Unit V3 9329702

€32.95

Free delivery - Thu, Dec 18

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Part no. 6820931

Telematics Module BMW X1 F48 F20 F30 Bluetooth GPS Control Unit ECU 6820931

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8386708

BMW X5 Series E53 Xenon Headlight Ballast Control Unit Module Hella 8386708

€32.95

Free delivery - Thu, Dec 18

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Part no. 9229294

BMW F20 F21 F22 F30 F31 F80 M3 USB Socket Plug Port Control Unit 9229294

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2229009910

Mercedes W205 W213 C238 Seat Heating Heater Module Control Unit ECU A2229009910

€66.95

Free delivery - Thu, Dec 18

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Part no. A0041518501-1

Mercedes W169 W245 Engine Starter Motor A0041518501

€32.95

Free delivery - Thu, Dec 18

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Part no. A1695450001

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

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8353447

BMW E36 E38 Relay Two Pole Make Contact 8353447

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6945145

BMW E60 E61 E63 Air Control Module Passenger Side Door 6945145

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 4M0907247

Audi A4 B9 A5 F5 Keyless Entry Amplifier Control Box Module Antenna 4M0907247

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1179008600

Airbag Module Mercedes w176 Air Bag SRS Control Unit ECU A1179008600

€47.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9462613

Camera Speed Control BMW i3 I01 F10 F20 F30 LCI KaFAS ECU Module Unit 9462613

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6809051

BMW F20 LCI REM Rear Electronic Module Fuse Box Control 6809051

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9367837

Air Module BMW F45 X1 F48 Mini F54 F55 F56 Air Control Unit ECU 9367837

€170.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2469055003-1

Ignition Switch Mercedes W167 W177 W247 Lock Control Unit Module A2469055003

€51.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0009822112

Energy Distributor Mercedes W205 W238 Power Control Unit Module A0009822112

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 1508927-2

BMW Mini Cooper S R52 R53 2 Positive Battery Cable Fuse Box Module B 6911180

€24.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2469005315

Transmission Module Mercedes W176 OM607 Diesel Control Unit A2469005315

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9381445

Mini Cooper F55 F56 F57 IBS Negative Battery Lead Cable 9381445

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8507202-2

BMW 3 Series E90 E91 LCI 318d N47N 143HP ECU Kit DDE 8507202 CAS3 Key Automatic

€265.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9138969

BMW E60 LCI E61 LCI Electronic Driver Circuit Centre Console 9138969

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9257093

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

€170.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 5J0919506

Seat Ibiza 6J 1.2 TSI CBZB Radiator Fan Relay Module Control Unit ECU 5J0919506

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6774206

Active Cruise Control BMW E90 E91 E92 LCI Longitudinal Dynamic Module 6774206

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Aerial Roof Antenna Mini Cooper Countryman R58 R60 R61 Base Module 9803844

-5%

Part no. 9803844-4

Aerial Roof Antenna Mini Cooper Countryman R58 R60 R61 Base Module 9803844

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6820526

Head Unit BMW F20 F21 Radio Media GPS Sat Navigation Unit 6820526

€142.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0009820912

Mercedes W176 W222 W246 Voltage Converter Power Distributor Fuse A0009820912

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0009007607

Mercedes-Benz E-Class W207 W212 Front Windscreen Windshield Lane Assist Camera

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6942677

BMW E60 E61 E63 E65 PDC Parking Control Module Unit ECU 6942677

€94.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1765405408

Mercedes-Benz A-Class W176 Front Door Cable Wiring Loom Harness A1765405408

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2129003922

Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129003922

€42.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7527610

Mini Cooper R50 W10 116HP Petrol Engine Control Unit ECU DME 7527610 Automatic

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9290013

BMW X3 F25 Footwell Light Control Unit Module ECU FRM III TEMIC 9290013

€37.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2045400708

Mercedes-Benz W204 Parking Sensor Wiring Cable Harness Rear PDC A2045400708

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9218702

Rain Sensor BMW F10 F11 Light Solar Fogging Control Unit 9218702

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Battery Cable BMW X3 F25 X4 F26 B47 Alternator Starter Base B Cable 8514291

-5%

Part no. 8514291

Battery Cable BMW X3 F25 X4 F26 B47 Alternator Starter Base B Cable 8514291

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

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Part no. 9286171

BMW F20 Front Right O/S Wiring Loom Harness Door O/S 9251711

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0005428418

Mercedes A B C Class W169 W203 W245 Outside Air Temperature Sensor A0005428418

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9301309

Air Conditioning Unit BMW F20 F21 F30 F31 Control Unit A/C Module 9301309

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7621168

BMW F20 F21 F30 F31 Earth Cable Battery Engine N47N N13 7621168

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8K0907063N

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

€51.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1779000304

Airbag Module Mercedes V177 W177 C118 Air Bag SRS Control Unit ECU A1779000304

€33.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9251984

BMW F10 F11 F20 F21 F30 Control Unit Module Voltage Transformer VSU180 9233143

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6799712

BMW F10 F11 ICM Management Control Unit Module DSC Brakes 6799712

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6819195

PDC Module BMW F45 X3 F25 Mini F55 F56 Parking Distance Sensor Unit 6819195

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7560626

BMW X3 Z4 E83 LCI E85 E86 Power Distribution Module Fuse Box 7560626

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7286050

BMW F20 Control Unit Module Wing Mirror Power Fold 7286050

€66.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6982114

Mini Cooper One R50 R53 Body Control Unit Basic Module BCM 6982114

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A1718200626

Mercedes R171 SLK200 Module Front Door Right O/S Control Module Unit A1718200626

€89.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0038207726

Mercedes W212 Siren Alarm Horn Signal Module Unit A0038207726

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0009007306

Mercedes W176 W204 W207 W212 W246 Fuel Pump Module Control Unit ECU A0009007306

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9361654

Radio Player Mini F55 F56 CD Bluetooth DAB Control Unit Module 9361654

€118.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9181453

BMW 1 X4 X5 Series F20 F21 F25 F26 Antenna Aerial Diversity Trap Circuit 9181453

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7851568

BMW F80 M3 F82 M4 Actuator Drive Exhaust Flap 7851568

€75.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9127088

BMW E81 E90 DC/DC Torque Converter Module Wandler 9253208 9127088

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6972065

BMW E91 Touring Ultra Sonic Burglar Alarm System Sensor Module 6972065

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9234087

BMW E70 F01 F02 F10 F11 Rain / Light / Solar Fogging Sensor Control Unit 9234087

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8515494

BMW 5 Series F10 F11 530d N57N Cable Alternator Starter Base B+ 8515494

€31.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8627098

BMW F45 X1 F48 Mini F60 Automatic Gearbox Module Control Unit EGS 8627098

€189.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6914396

Mini Cooper R50 R52 R53 Support Bracket Navigation Computer 6914396

€23.95

Free delivery - Thu, Dec 18

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Part no. 9220695

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

€66.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7572873

BMW Z4 E85 E86 Battery Holder Hold Down Bracket 7572873

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9197316

BMW E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8780776

Head Unit BMW F10 F20 F22 F30 Navigation Sat Nav GPS Unit High 8780776

€412.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 81A035502

Audi A3 8V Wireless Charger Centre Console Phone Charging Module Unit 81A035502

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9236519

BMW 1 Series E81 E87 LCI Front PDC Parking Distance Control Loom Wiring 9236519

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2079004400

Rear Window Module Mercedes W207 C207 Coupe Control Unit ECU A2079004400

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9130047

BMW 3 4 5 Series E92 F32 E61 LCPA Seat Belt Module ECU

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9264917

BMW Z4 E89 Roadster Air Module Control Unit ECU 9264917

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9329700

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9329700

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9298962

BMW F20 F21 F22 F30 F31 F32 F33 F80 M3 Body Control Unit Module REM V5 9298962

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9805670

Mini R60 Countryman Door Window Lifter Regulator Motor Front Right O/S

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9293307

BMW F30 REM Rear Electronic Module Fuse Box Control Unit V2 9293307

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7168153

BMW MINI Cooper One Clubman R55 R55N LCI Wiper Motor Window Left Rear N/S 716815

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9217004

Battery Cable Plus BMW X5 E70 E70N LCI X6 E71 Positive Pole 9217004

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9362848-1

Telematics Module BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Unit 9342881

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8631672

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

€94.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6933242

Mini Cooper One R50 R52 R53 Side Air Module Control Unit 6933242

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6850846

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

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8636064

Wiring Cable BMW F20 F30 LCI B48 Engine Injector Ignition Loom 8636064

€85.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0025421119

Mercedes W163 W168 W203 W211 Relay 4-Pin Black Hella A0025421119

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2079058802

Roof Antenna Mercedes W204 W212 Shark Aerial Antenna Cable Harness A2079058802

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0009007604

Adblue Module Mercedes W205 W213 W177 W907 SCR Control Unit EGR ECU A0009007604

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 4G0907637H

Audi A6 C7 ESP Yaw Rate Module Control Unit Sensor ECU 4G0907637H

€75.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2465407632

Battery Cable Mercedes W176 W246 Positive Wiring Starter Harness A2465407632

€113.95

Free delivery - Thu, Dec 18

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Mercedes W205 PDC Park Assist Control Module Ecu A2229000905

-5%

Part no. A2229000905

Mercedes W205 PDC Park Assist Control Module Ecu A2229000905

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9387561

Head Unit BMW I3 I8 Mini F56 Navigation Sat Nav DAB High Control Module 9387561

€227.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2129005812

Mercedes S204 Estate SAM Module Fuse Box Relay Control Unit A2129005812

€75.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7811163

BMW 1 3 5 Series F10 F20 E90 LCI Wiring Harness Engine Glow Plug Module 7811163

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

BMW F20 F30 F31 Mini F55 F56 F60 Control Unit Air Conditioning Module 9462544

-5%

Part no. 9462544

BMW F20 F30 F31 Mini F55 F56 F60 Control Unit Air Conditioning Module 9462544

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 1388911-1

BMW E36 E38 E85 Mini R52 R57 2x Change-Over Contact Relay Violet Set 1388911

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6777641-1

Air Module Wiring BMW X5 E70 E81 E87 E90 E91 E92 E93 Steering Wheel Loom

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

...

Showing 496-594 of 11957 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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