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. 9339825

BMW G11 G30 G31 Power Supply Module High Voltage Battery Terminal Point 9339825

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8582280-4

BMW F20 116d N47N 116HP Engine Control ECU DDE 8582280 Automatic Transmission

€56.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A1179009200

Mercedes W176 Air Module Belts System Control Unit ECU Bosch A1179009200

€70.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 7333939

BMW F11 Control Unit Rear Tailgate Boot Lid Function Module ECU 7333939

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9347914

BMW 5 Series F07 F10 F11 CAS4 Control Unit Key Reading Module 9347914

€132.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9335347

BMW F20 F21 F30 F31 Radio Player CD DAB Head Unit Audio Player 9335347

€56.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9665162580

Peugeot Partner Citroen Berlingo 1.6 HDI Engine Wiring Cable Bracket 9665162580

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A9069006303-1

Mercedes W906 Fuse Box SAM Module Control Unit ZGS Temic A9069006303

€89.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2466200028

Mercedes W176 Battery Support Holder Bracket Mount A2466200028

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9261598

BMW F20 F21 F22 Rear Bumper PDC Ultrasonic Sensor Valencia Orange Metallic B44

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 141951253B-1

VW Volkswagen Audi Seat Skoda Relay Unit 4 Pins 12V 40A 141951253B

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2049069701-1

Mercedes W204 Radio Player Audio 20 Navi CD Player Head Unit A2049069701

€66.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. N000000003996

Mercedes Universal Fuse Relay Electrical Unit Set Bag N000000 003996

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A0045467640

Distributor Box Mercedes W204 W207 W221 Connector Block Control Unit A0045467640

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 3D0951253A

VW Volkswagen Audi Seat Skoda Relay Black 5 Pins 12V 50A Set 433 3D0951253A

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. E92-PDC-WIRING-LOOM-HARNESS-REAR-BUMPER-2

BMW E92 E92N LCI PDC Wiring Loom Harness Rear Bumper

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9203304

BMW X5 Series E70 Cable Loom Door Rear Left Right N/O/S Wiring Harness 9207857

€32.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9223682

BMW X5 X6 Series E70 E71 Dashboard Onboard Monitor Display Screen 8,8" 9223682

€132.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9875929

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

€170.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8578945

BMW F20 F30 116d 316d N47N 116HP ECU Engine Contol Unit DDE 8578945 Automatic

€47.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8512047-4

BMW E90 E91 LCI N47N 320d 184HP Engine Control Unit ECU DDE 8512047 Automatic

€56.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8586540

BMW F30 F32 LCI 330d 430d N57N 258HP Engine Control Unit Module ECU DDE 8586540

€94.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 7792544

Mini One D Diesel W17 1ND 88HP Engine ECU Control Unit DDE 7792544 Manual

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8506434

BMW E87 E90 LCI N47 118d 318d Diesel Engine Control Unit ECU DDE Manual Gearbox

€61.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8517874

BMW F20 F21 F30 116d 316d Diesel N47N Engine Control Unit ECU DDE 8517874 Manual

€32.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8512415

Mini Cooper D R60 ALL4 N47N 112HP Diesel Engine Control Unit ECU DDE 8512415

€51.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8574372

BMW F30 F32 330d 430d Diesel N57N Engine Control Unit ECU DDE 8574372 Automatic

€189.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. AC1112A650BC

Ford Transit MK7 2.4 TDCI T24DD0P Diesel Engine Control Unit ECU AC1112A650BC

€37.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2129008707-1

Mercedes W212 Display Screen Multifunction Dashboard Control Unit A2129008707

€32.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 6809050

BMW F20 F30 Rear Electronic Module REM Fuse Box Control Unit V2 ECU 6809050

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 7583526-1

BMW X3 Series E83 2.5si N52N 218HP Engine ECU Kit DME + Key 7583526 Manual

€417.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 7342174

BMW X1 E84 Z4 E89 LED Xenon Headlight ECU Module 7342174 L90028076

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 7838929

BMW 3 5 6 Series E60 E63 E90 E92 Crossover Frequency Unit Module Door 7838929

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A1665420018

Battery Cable Mercedes W176 Negative Lead Wiring Harness Control A1665420018

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2465406607

Positive Cable Mercedes W176 W246 Battery Lead Plus Pole Red A2465406607

€28.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2469060093

Fuse Box Mercedes W176 OM607 Front Relay Control Unit Module A2469060093

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9372556

BMW G11 Door Wiring Harness Rear Left Right Door N/O/S Wiring Loom 9372556

€42.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 7951069

KaFAS Camera BMW F45 Front Camera Control Unit Module 9384688

€28.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8580390

Engine Starter BMW F40 F46 F48 B47B B47D B48E Diesel Motor Actuator 8580390

€28.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9319918

Adapter Lead Wire BMW F45 F46 X1 F48 Cable Active Air Flap Control 9319918

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8506375-3

BMW E81 E87 E90 E91 LCI 118d 318d N47 Diesel ECU KIT DDE 8506375 CAS3 + Key

€113.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9243896-1

Central Information Display BMW F10 F11 LCI Boardmonitor Screen 7" 9243896

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9244189

BMW F20 F21 F30 F31 Telematics Module Bluetooth Combox Telematik ECU 9244189

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9181463

BMW 1 X4 X5 Series F20 F21 F25 F26 Antenna Aerial Diversity Trap Circuit 9181463

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 913463601

Seat Module BMW E65 Front Seat Control Unit Module ECU 913463601

€32.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2641591400

Ignition Coil Mercedes W177 M260 Petrol Ignition Cable Connector A2641591400

€37.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9653805580

Peugeot 308 1.6 HDI Diesel Glow Plug Wiring Loom Cable Wiring 9653805580

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2218210197

Mercedes W221 Cover Wiring Cable Front Door Protection Seal Sleeve A2218210197

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8573258

BMW F20 F21 F30 F31 116d 316d 118d 318d Diesel N47N Engine ECU 8573258 Manual

€32.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A0005454516

Mercedes W204 Automatic Gearbox EGS Control Module Unit ECU A0005454516

€31.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8583091

BMW X5 E70 G11 Integrated Supply Module Ecu Control Unit 8583091

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A1769980001

Door Wiring Plug Mercedes W176 W246 Cable Lead Connector A1769980001

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9279391

BMW 5 G11 G30 M5 Door Crash Sensor Front 9279391

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A1698207526-1

Mercedes W169 W245 Door Control Unit Left N/S Rear A1698207526

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9338153

Mini F54 F60 Clubman Countryman Antenna Aerial Amplifier AM / FM Unit 9338153

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 6838609

Antenna Amplifier BMW F40 Aeral Diversity Control Unit FM DAB Live Dash 6838609

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9237055

Antenna Diversity BMW F07 GT Control Unit Module Aeral Amplifier 868 MHZ 9237055

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 6838610

BMW 1 Series F40 Aerial probe AM/FM Antenna 6838610

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9286365

BMW X1 X2 Series F39 F48 Antenne AM Antenna Amplifier Cable 9286365

Product currently unavailable

Part no. A2078203426

Mercedes W204 C207 Rain Sensor Light Control Unit Front Windscreen A2078203426

€28.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2078202810

Mercedes W207 Convertible Anti Theft Roof ITS TPS Sensor Module Unit A2078202810

€37.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A0009058000

Windscreen Camera Mercedes W207 W221 Front Windshield Module Unit A0009058000

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2079002800

Mercedes W207 Convertible Door Module Front Right O/S Control Unit A2079002800

€28.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8691827-2

Mini Cooper F56 B38 136HP Petrol Engine ECU Kit DME 8691827 BDC + Key Manual

€417.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 6C11-3C190-AB

Ford Transit MK7 Yaw Sensor ESP Rotation Rate Control Unit Module 6C11-3C190-AB

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 6939760-COOL

Mini Cooper R50 PDC Ultrasonic Parking Sensor Cool Blue Metallic A27

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 7571142-2

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

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 6824383

BMW 1 2 3 4 Series F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 6824383

€113.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2129000406

Fuel Pump Module Mercedes W207 C207 A207 Control Unit ECU A2129000406

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2049002002

Mercedes W204 C207 Air Suspension Dynamic Level Control Unit Module A2049002002

€45.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 31327066

Starter Motor Volvo S40 V70 XC90 Diesel Engine Actuator Motor 31327066

€28.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A0325453132

Gearbox Module Mercedes SLK R171 Automatic Transmission Unit EGS A0325453132

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9387262

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

€113.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8E0057185KX

Audi A4 B7 Radio Media Player Audio CD Head Unit Player Concert 8E0057185KX

€113.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 6923547

BMW E65 E66 6-fold CD Changer Multichanger Without Magazine 6923547

€132.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9688268580

Citroen C4 Starter Motor Diesel Engine 1.6 HDI Actuator Unit 9688268580

€56.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8200587119

Renault Trafic III Vauxhall Vivaro B Relay 5-Pin Grey Unit 8200587119

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8514735

BMW F20 F21 116d ed N47N 116HP Engine Control Unit Module ECU DDE 8514735 Manual

€170.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 6907329

BMW E65 Door Cable Guide Rear Left N/S Wiring Loom Bracket Trim Cover 6907329

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 3456872

Mini Cooper R55 R56 R57 LCI R60 Radio Boost CD Player Unit Head 3456872

€256.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 02Z911024H

Volkswagen Passat B7 Starter Motor Actuator TDI Diesel Engine 02Z911024H

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A6071550335

Alternator Belt Tensioner Mercedes W176 OM607 Diesel Holder Mounting Panel

€37.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8517862-5

BMW F10 F20 F30 520d 120d 320d N47N 184HP Engine Unit ECU DDE 8517862 Automatic

€56.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8519663-16

Mini Cooper SD R60 R61 ALL4 N47N 143HP ECU Kit DDE 8519663 CAS3 Key Manual

€194.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8636596

BMW 1 3 Series F20 F21 F30 F31 Line Cable Power Distribution Module 8636596

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9805670-1

Mini R60 Countryman Window Lifter Motor Drive Front Right O/S Door 9804384

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 9196935

Seat Module BMW X1 E84 E87 E90 E91 Seating Control Unit ECU 9196935

€28.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 6951629

BMW Z4 X3 E83 E85 Mini R50 DVD GPS Navigation System Computer 6951629

€189.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2601503100

Mercedes W177 M260 Petrol Engine Wiring Cable Loom Harness A2601503100

€189.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2208203226

Seat Heating Sensor Mercedes W209 W211 W220 Left N/S Control Unit A2208203226

€32.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8582280-3

BMW F20 F21 116d N47N 116HP ECU Kit DDE 8582280 + Key + Lock + FEM Manual

€284.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8573260-10

BMW F20 F21 116d Diesel N47N 116HP ECU Kit DDE 8573260 + Keys + FEM Manual

€332.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. YC1E10K019BA

Ford Transit MK6 2.4 Diesel Alternator Bracket Mount Support YC1E10K019BA

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 7488140

BMW F10 F20 F21 F30 F31 LCI SCR Control Module ECU Unit 7488140

€42.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 3T1T-14301-AC

Ford Transit Connect Negative Battery Terminal Cable Wiring 3T1T-14301-AC

€28.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2474703702

Mercedes W177 W247 Solenoid Valve Line Pipe Hose Starter A2474703702

€42.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A0009068206

Alternator Generator Mercedes W177 W247 M260 Petrol Engine 200A 14V A0009068206

€332.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. 8512499-10

BMW X1 E84 18d N47 ECU Engine Control Unit Kit DDE 8512499 CAS3 + Key Manual

€199.95

Free delivery - Wed, Nov 26

If paid before 14:00

Part no. A2465411005

Battery Cover Mercedes C117 W176 W246 Box Trim Lid Panel Housing A2465411005

€23.95

Free delivery - Wed, Nov 26

If paid before 14:00

...

Showing 2674-2772 of 11791 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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