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. 6901469

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

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6935597

Parking Sensor BMW E81 E87 E90 E91 PDC Front Rear Titansilber Silver - 354

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6951674

BMW E81 E87 E90 PDC Parking Sensor Ultrasonic Sparkling Graphite A22

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7837273

BMW 1 3 Series E81 E87 E90 E91 PDC Parking Ultrasonic Sensor Le Mans Blau Blue

PLN 27.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7176068

BMW X3 E46 E63 E83 Mini R50 R53 Control Unit Xenon Light 1307329074

PLN 142.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 6980177

BMW X1 X3 X5 X6 Z4 Z8 Relay Changeover Function Green 6980177

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6950131

BMW X3 E83 Z4 E85 Front Rear Door Mid-range Audio Loudspeaker 6950131

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6928934

Antenna Amplifier BMW E82 E90 E92 Diversity Signal Boost 6928934

PLN 75.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 6988303

BMW F20 F30 E60 E65 X5 E70 X6 E71 E84 Air Wiring Sensor Quality AUC 6988303

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6777641

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

PLN 61.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 9162930-WB

BMW E81 E82 E87 E90 E91 Parking Sensor PDC Ultrasonic Bluewater - 896

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6956746

BMW E81 E87 E90 LCI PDC Parking Ultrasonic Sensor Monaco Blue A35 6956746

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6988965

BMW E81 E87 E90 LCI PDC Parking Ultrasonic Sensor Spacegrau 6988965

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7549393

Negative Cable BMW E81 X1 E84 E87 E90 E91 E92 E93 Ground Earth Battery 7549393

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. E87-E90-PLUG-SOCKET-LOOM-PDC

BMW E81 E82 E87 E88 E90 E91 E92 Plug Socket Loom PDC Parking Sensor

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9124112

BMW E81 E82 E87 E90 E91 E92 Mini Cooper R55 R56 R60 Rain Light Sensor 9124112

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7802158

BMW E60N E81 E87N E90 E90N E91 E91N E92 E93 Wiring Harness Engine Glow Module

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 8352336

BMW X3 X5 E39 E46 E60 E61 E83 E90 E91 Glove Box Torch Charger Sock 8352336

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 1388911

BMW E36 E38 E21 E85 R52 R57 Change-Over Contact Relay Violet 1388911

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 8373700

BMW E60 E63 E87 E90 E91 Relay Make Contact White Green 8373700

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9119446

BMW E81 X1 E84 E87 E90 E91 E92 Fuse Box Power Distribution Unit Front 9119446

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 8363668

BMW X3 X5 Series E53 E83 Steering Column Turn Indicator Switch Stalk 8363668

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6925966

BMW X3 E83 LCi Rear Right Door Window Lifter With Motor O/S 6925966

PLN 94.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 7537612

BMW X5 E53 E60 E81 E87 E90 Engine Vacuum Control Electric Valve 7537612

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9251702

BMW 1 2 3 Series F20 F21 F22 F30 F31 F32 Connecting Wire Sat Nav Champ/Mask-CID

PLN 47.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6915327

BMW E46 E39 E60 E81 E87 E90 E91 F10 F20 F30 Relay Make Contact Sky Blue 6915327

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7796892

BMW E60 E61 X3 E83 X5 E70 X6 E71 Starter Motor Diesel 7796892

PLN 61.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 7631109

BMW F20 F21 F30 F32 F87 Battery Cable Negative IBS 7631109

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9261612

Ultrasonic Parking Sensor BMW F20 F21 F23 F87 PDC Black 9261612

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9284594

BMW 1 2 Series F20 F21 F30 F30 Mini F56 Front Seat Sensor Mat Left N/S 9284594

PLN 66.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 9261591

BMW F20 F21 F30 PDC Ultrasonic Parking Sensor PDC Front Imperial Blau Blue

PLN 61.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 9348726

BMW F20 F21 F30 Air Module Control Unit 0285013626 9461918 9296494 6826983

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6931507

BMW E60 E61 E63 E87 E90 E91 F10 Diagnosis Interface Most 6931507

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 1742690

BMW E60 E63 E87 E90 Relay Changer Make Contact Salmon Red 1742690

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9207913

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

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6940624

BMW E81 E87 E90 E91 E92 Ultrasonic-sensor PDC Arktis Metallic A34 6940624

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9270495

BMW X5 X6 5 6 Series E70 E71 F10 F11 F12 PDC Ultrasonic Sensor Black 9270495

PLN 47.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 8379094

BMW X5 Series E53 Rear Right Door Stereo Audio Loudspeaker O/S 8379094

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 8377654

BMW X5 E53 AmplifIer Trap Circuit Antenna Booster Diversity 8377654

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 3402979

BMW X3 Series E83 2.0d Diesel M47N2 Wire Line Lead For Preheater System 3402979

PLN 46.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9134280

BMW E81 E82 E87 E90 E91 Air Module Control Unit No Crash Data 9134280

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9114342

Distance Control Sensor BMWE81 E87 E90 PDC Parking Sensor Montego Blue 9114342

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7301554

BMW F10 F20 F30 F32 Control Unit For Fuel Pump 7301554

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9804157

BMW F20 F21 F22 F23 LCi Mid-range Sound Speaker Stereo HiFi

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9149615

BMW E61 E65 E70 Telemetics Control Unit Bluetooth Control Unit Module 9149615

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 8365960

BMW E38 E39 E53 Battery Crash Disconnection Control Relay 8365960

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7794908

Preheater System Lead BMW E87 E90 E91 Diesel 7794908

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9119494

BMW E87 ECU Junction Box Body Control Module L2 61359119494 9119494

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9306405

BMW F20 F21 F30 F31 F32 F36 Negative Minus Battery Cable Lead Pole IBS 9306405

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9116543

PDC Control Unit BMW E46 Z4 E85 Mini R50 R53 Parking Unit Module 9116543

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 3412336

BMW X3 E83 Battery Cable Negative Wiring 3412336

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7631587

BMW 1 3 X5 Series E53 E81 E87 E90 LCI Battery Mounting Bracket Clamp Bolt Holder

PLN 61.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 9252639

Parking Module BMW E81 E84 E87 E90 E91 Control Unit PDC 9252639

PLN 237.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 9255048

BMW 1 Series E81 E87 E87N Battery Wire Cable Negative Earth Lead 9255048 6929705

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9139868

BMW X3 E83 LCI X5 E70 LCI PDC Parking Ultrasonic Sensor Schwarz Black 9139868

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9210147

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

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6942675

BMW 3 Z4 Series E46 E89 Mini R50 R52 Parking Control Module Unit PDC 6942675

PLN 61.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 3414122

BMW X3 E83 Sensor Air Module Front Impact Crash Sensor 3414122

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 3448250

BMW X3 E83 Front Door Window Lifter Regulator Motor Right O/S 3448250

PLN 142.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 7404880

Fuel Pump Module BMW F20 F21 F30 F31 Control Unit ECU 7404880

PLN 61.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 8375408

BMW X5 E39 E53 Steering Column Wiper Switch Stalk 8375408

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 8379567

BMW X5 Series E53 Loudspeaker Stereo Left Front Door N/S 8379567

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6909776

BMW X5 Series E53 Control Element Light Switch 6909776

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6940623

BMW 1 3 Series E81 E82 E84 E87 E90 E91 PDC Parking Ultrasonic Sensor Quartz Blue

PLN 61.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 9233034-SCG

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

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7567776

Starter Cable BMW E81 X1 E84 E87 E90 N52 Alternator Battery Wire B 7567776

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6906914

BMW X5 E53 Battery Cable Negative Wire 6919976

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6763735

BMW X5 E60 E81 E87 E90 E91 E92 Xenon Headlight Level Sensor

PLN 61.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 6958526

BMW 5 X5 X6 Series E60 E61 E70 E71 F07 F10 F11 Seat Adjustment Switch Right O/S

PLN 28.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6777641-1

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

PLN 93.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 9270500-SCH

BMW X3 Series E83 LCI Front PDC Ultrasonic Parking Sensor Black 9270500

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 1393415

BMW 3 5 7 Series E36 E38 E90 E91 F10 F11 Change-Over Contact Relay Grey 1393415

PLN 18.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9224177

BMW F10 F11 F12 F13 F15 F16 Airbag Sensor Module B-pillar Crash Sensor 9224177

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 8387547

Fuse Box Base BMW X3 E83 Mini R50 R53 Battery Positive Cable B 8387547

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6925330

Central Bass Speaker BMW E81 E87 E90 E91 E92 Stereo Audio Right O/S 6925330

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9117877

BMW F20 F21 F30 F31 F32 F33 Negative Minus Pole IBS Battery Lead Cable 9117877

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6956744

BMW 1 3 Series E81 E82 E87 E88 E90 E91 Ultrasonic Sensor PDC Sydney Blue 6956744

PLN 27.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6906070

BMW X5 E53 Roof Antenna Amplifier Trap Circuit 6906070

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7798076

BMW E60 E61 E63 E64 LCI Electrical Battery Earth Cable 330MM 7798076

PLN 75.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 7789755

BMW 5 6 Series E60 E61 E63 E64 LCI Cable Starter-Base B 7789755

PLN 18.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9210148

BMW F20 F30 Central Bass Speaker Stereo Subwoofer Right O/S 9210148

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9341546

BMW F40 G20 G30 Accelerating Sensor 9341546

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9240490

Battery Distribution Box BMW F01 F02 F10 F11 Power B+ Rear 9240490

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9225824

PDC Module BMW E81 E82 E87 E90 E91 E92 Parking Distance Control Unit 9225824

PLN 332.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 6926435

BMW 1 3 Series E87 E90 Mini R56 R57 Seat Control Unit Module Heating 6926435

PLN 28.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6927025-1

Window Lifter Drive BMW E87 E90 E91 Motor Rear Left 6927025

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9261580

BMW F20 F21 F30 F31 PDC Parking Sensor Ultrasonic Glacier Silver A83

PLN 75.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 9134661

BMW E87 E90 E91 E92 Seat Control Unit Module ECU 9134661

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9183233

BMW E60 E61 LCI Centre Console Switch Cluster Control Unit ECU Module 9183233

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6926459

BMW X1 E81 E82 E84 E87 E88 E90 E91 E92 Climate Control Solar Sensor 6926459

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 9116801

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

PLN 94.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 9270501

BMW X3 E83N E70 LCI E71 PDC Parking Ultrasonic Sensor Schwarz 7687127

PLN 61.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 6798872

BMW F10 F11 F30 F31 Wheel Electronics Module RDC 433MHZ Control Unit 6798872

PLN 61.95

Free delivery - Thu, Jan 08

If paid before 14:00

Part no. 7550975

BMW 1 3 Series E81 E82 E87N E88 E90 E91 E92 N43 Starter Motor

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 8376443

BMW X3 X5 Z4 E46 E53 E83 E85 Switch Cluster Steering Column 8376443

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 6925964

BMW X3 E83 Drive For Window Lifter Motor Front Right O/S 6925964

PLN 42.95

Delivery - Thu, Jan 08

If paid before 14:00

Part no. 7811163

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

PLN 47.95

Delivery - Thu, Jan 08

If paid before 14:00

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Showing 1-99 of 4778 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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