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. 3Q0959655AQ

Skoda Octavia 5E Air Module Control Unit ECU Module Sensor 3Q0959655AQ

€80.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6923217

BMW 6 E64 E64 LCI Bracket Control Unit Vehicle Electrical System 6923217

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 99661822100

Porsche Boxter 986 Crash Impact Sensor Module 99661822100

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Audi A5 8T Front Door Control Module Left N/S Driver's Side Unit 8T0959793M

-5%

Part no. 8T0959793M

Audi A5 8T Front Door Control Module Left N/S Driver's Side Unit 8T0959793M

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8W0959592G

Audi A4 B9 Front Door Module Control Unit Passenger Side 8W0959592G

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2118203042

Mercedes E-Class W211 S211 Front Right Door O/S Window Lifter Motor Regulator

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9286953

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 9286953

€42.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8W9971104A

Audi S4 B9 Wiring Loom Set PDC Rear Complete Harness Parking Sensor 8W9971104A

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8572439-3

Engine Control Unit BMW F30 F31 N57N 330d 258HP ECU DDE 8572439 Automatic

€61.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A9079003207

Mercedes W907 Air Suspension Level Control Unit Module Airmatic A9079003207

€142.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9270392-2

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

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 39113-2A511

Kia Ceed I 1.6 CRDI 115HP D4FB Diesel Engine Control ECU 39113-2A511 Manual

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

Mercedes W211 Door Module Rear Left N/S Control Unit ECU A2118703185

-5%

Part no. A2118703185

Mercedes W211 Door Module Rear Left N/S Control Unit ECU A2118703185

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

GM Vauxhall Opel Relay 4-Pin Multi Use Glow Plug Unit Magenta 90494959

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Part no. 90494959

GM Vauxhall Opel Relay 4-Pin Multi Use Glow Plug Unit Magenta 90494959

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A6071550335

Alternator Belt Tensioner Mercedes W176 OM607 Diesel Holder Mounting Panel

€37.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8512292-2

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

€146.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 7598857

Mini R55 R56 Cooper S EGS Module Automatic Gearbox ECU Control Unit 7598857

€80.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 7223190

Rear View Camera BMW F07 GT Trim Panel Cover Boot Lid Tailgate 7223190

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6922528

BMW 5 Series E61 E61N LCI Holder Bracket Additional Battery 6922528

€26.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 03L906022RD

Skoda Octavia II VRS 2.0 TDI CEGA Engine Control Module ECU 03L906022RD Manual

€256.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9488417

Mini F60 BMW F48 SCR AdBlue Module Control Unit 9488417

€47.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 1K0907115J-1

Volkswagen Golf Mk5 1K V 2.0 TFSI BWA 200HP Engine Unit ECU 1K0907115J Automatic

€189.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 7644251

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

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2118202442

Mercedes E-Class W211 S211 Rear Right Door Window Lifter Motor Regulator

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6858017

BMW F10 F11 LCI Control Unit EMF Module 6858017

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8638552

Supply Module BMW F90 M5 F91 M8 G05 G11 G30 Integrated Control Unit 8638552

€56.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6985363

BMW E60 E61 E63 E64 Body Gateway Module 61356985363 6985363

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Sunroof Wiring Mercedes C205 C238 Panoramic Motor Cable Harness A2058201201

-5%

Part no. A2058201201

Sunroof Wiring Mercedes C205 C238 Panoramic Motor Cable Harness A2058201201

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Battery Wire Mini Cooper F55 F56 F57 IBS Negative Battery Lead Cable 6821205

-5%

Part no. 6821205

Battery Wire Mini Cooper F55 F56 F57 IBS Negative Battery Lead Cable 6821205

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8574093-5

BMW F10 F30 320d 520d 163HP Engine Control N47N ECU DDE 8574093 Automatic

€42.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6962723

BMW E60 Light Control Unit Module LME6X MAN.LWR Lear 6962723

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

BMW X3 F25 X4 F26 Earth Ground Cable Line Strap Battery Lead 7621063

-5%

Part no. 7621063

BMW X3 F25 X4 F26 Earth Ground Cable Line Strap Battery Lead 7621063

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6916228

Mini Cooper R50 R53 VICS Receiver Control Unit Module Japan 6916228

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 7160897

BMW X5 E53 E60 E61 E65 E81 E87 E90 E91 Turn Indicator Silver Bulb 7160897

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2049005015

Mercedes C204 W207 Suspension Damper Adjustment Control Unit Module A2049005015

€189.95

Free delivery - Wed, Dec 24

If paid before 14:00

VW Volkswagen Audi Seat Skoda Airbag Crash Impact Sensor SRC 1K0955557A

-5%

Part no. 1K0955557A

VW Volkswagen Audi Seat Skoda Airbag Crash Impact Sensor SRC 1K0955557A

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A0131545602

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

€94.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2069055100

Mercedes C118 W167 W177 W206 W247 Stereo Amplifier Harman Kardon A2069055100

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 83A962239

Audi A3 8Y Q3 F3 Rear Hatch Boot Lid Tailgate Opening Cable Wiring 83A962239

€70.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9157158

BMW E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9157158

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Mercedes S204 Door Module Front Left N/S Control Unit ECU A2048701826

-5%

Part no. A2048701826

Mercedes S204 Door Module Front Left N/S Control Unit ECU A2048701826

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9226885

BMW F20 F21 Aerial Antenna Amplifier Diversity DAB 9226885

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A4209003305

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit Module A4209003305

€222.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9497858

Mini Countryman F60 Wiring Cable Loom Adapter Excitement THL 9497858

€33.95

Free delivery - Wed, Dec 24

If paid before 14:00

Audi A3 8P Negative Cable Battery Terminal Wiring Loom 1K0915181H

-5%

Part no. 1K0915181H

Audi A3 8P Negative Cable Battery Terminal Wiring Loom 1K0915181H

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9362396

BMW F20 REM Rear Electronic Module Fuse Box Control Unit V3 9362396

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

ICM Module BMW F10 F11 Integrated Chassis Management QL ES Control Unit 6798242

-5%

Part no. 6798242

ICM Module BMW F10 F11 Integrated Chassis Management QL ES Control Unit 6798242

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9226901

Body Control Module BMW F01 ECU Junction Box PL6 JBBFE III 3 Lear 9226901

€56.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8W0947356E

Audi A5 S5 F5 Interior Door Panel Courtesy Light LED Wiring Harness 8W0947356E

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6807395

Interface Control Module BMW F10 F20 F30 Bus Unit 120 OHM 6807395

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 07Z911023BX

Volkswagen Phaeton 3D Engine Starter Motor Acutator 5.0 V10 Diesel 07Z911023BX

€142.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A1779007716

Mercedes W177 Front Door Control Module Left Right N/O/S Unit ECU A1779007716

€61.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A6429002900-6

Mercedes C207 E350 CDI BlueEfficiency OM642.836 Engine Module ECU A6429002900

€132.95

Free delivery - Wed, Dec 24

If paid before 14:00

Audi A1 8X A3 8V Windscreen Rain Sensor Control Unit 8U0955559

-5%

Part no. 8U0955559

Audi A1 8X A3 8V Windscreen Rain Sensor Control Unit 8U0955559

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 3Q0907530AG

Audi Q2 Q3 F3 1.5 TFSI Gateway Control Unit Module ECU 3Q0907530AG

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6800903-2

Mini R50 R52 R53 Steering Wheel Horn Switch Left Right N/O/S Set 6800903

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2205404208

Mercedes W220 Rear PDC Parking Sensor Wiring Loom A2205404208

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A1775402500

Mercedes W177 W247 Battery Cable Negative Lead Terminal Harness A1775402500

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2229009519-1

Mercedes C238 Head Unit Radio CD Player Audio Sat Nav Control A2229009519

€564.95

Free delivery - Wed, Dec 24

If paid before 14:00

Mercedes Sprinter W906 Positive Battery Terminal Cover Cap Trim Red A9069820109

-5%

Part no. A9069820109

Mercedes Sprinter W906 Positive Battery Terminal Cover Cap Trim Red A9069820109

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

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Part no. A2129003704

Parking Module Mercedes W207 W212 PDC Distance Control Unit Sensor A2129003704

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9226331

BMW E87 LCI ECU Body Control Module Unit H2 9226331

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A1665402350

Fuse Box Mercedes GLE W166 C292 W463 Relay Control Unit Module A1665402350

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6970904

BMW 7 Series E65 E66 E67 Sensor Rear Seat Airbag 65776970904 6970904

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9131850

CD Changer BMW E60 E61 E63 6-DISC Compact without Magazine 9131850

€47.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9170452

BMW X5 Series E70 Footwell Light Control Module Unit LEAR FRM II NSW 9170452

€132.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 4N0035446

Audi A3 RS3 8V Aerial Antenna Amplifier Control Module Unit 4N0035446

€113.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6921982

BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver Side

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Audi A6 C6 Front Lamp Headlight Range Control Module Unit ECU 5LA907357H

-5%

Part no. 5LA907357H

Audi A6 C6 Front Lamp Headlight Range Control Module Unit ECU 5LA907357H

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8J0971349A

Audi TT 8J Alternator Main Cable Wiring Harness Loom 8J0971349A

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A1729002601

Mercedes SLK R172 Door Control Unit Module Front Right O/S A1729002601

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 5QS915181

Audi A3 S3 8Y Battery Negative Terminal Cable Wire 5QS915181

€56.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2048701226

Mercedes S204 Door Module Rear Right O/S Control Unit ECU A2048701226

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8570238

BMW E87 E90 F20 F30 Engine Starter Motor Actuator N47 N47N Diesel 8570238

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A1715403932

Mercedes SLK R171 Rear Bumper PDC Wiring Loom Parking Sensor Cable A1715403932

€37.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A0009008709

Mercedes W213 Tyre Pressure Control Module Unit A0009008709

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. DE8T19H463DC

Ford Transit Connect Mk2 II Rain Sensor Control Unit Module FoMoCo DE8T19H463DC

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 7809999-3

BMW X3 E83 LCI 1.8sd 2.0sd N47 177HP Engine Control Unit ECU DDE 7809999 Manual

€180.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2218702286

Mercedes W221 Front Seat Heater Control Unit Module ECU A2218702286

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 7641649

BMW F10 F20 F30 N20 125i 328i 528i N20 Wiring Harness Engine Module 1 7641649

€85.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9264924

BMW F01 F02 F10 F11 F13 Power Distribution Fuse Box Rear 9264924

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Audi A4 B8 Air Module Control Unit ECU Crash Control 8K0959655L

-5%

Part no. 8K0959655L

Audi A4 B8 Air Module Control Unit ECU Crash Control 8K0959655L

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

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Part no. 9228914

Radio CD Player BMW F10 F11 F13 Navigation ECE Sat Nav Head Unit 9228914

€284.95

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If paid before 14:00

Part no. 9290357

BMW F10 F20 F22 F30 Navigation Head Unit Harman Sat Nav Unit High 9290357

€522.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2038202285

Mercedes-Benz C-Class W203 Door Control Module Right Rear O/S A2038202285

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

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

-5%

Part no. 4G8959792G

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

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2479002613

Mercedes CLA C118 W177 W205 W213 Telematics Control Unit Module A2479002613

€80.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 5QF959655BT

Seat Ibiza Mk5 Air Module Control Unit 5QF959655BT

€218.95

Free delivery - Wed, Dec 24

If paid before 14:00

Junction Point BMW X5 F15 X6 F16 B + Battery Power Distributor 6826201

-5%

Part no. 6826201

Junction Point BMW X5 F15 X6 F16 B + Battery Power Distributor 6826201

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

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Part no. 99660410300

Porsche Boxster 986 2.7 Petrol Engine Starter Motor Unit 99660410300

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8P0907530B

Audi A3 8P Gateway Control Unit Module ECU 8P0907530B

€37.95

Free delivery - Wed, Dec 24

If paid before 14:00

Audi A3 8V 30 TDI DGTE Ad Blue Reducer Dosage Control Module Unit ECU 7N0941329

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Part no. 7N0941329

Audi A3 8V 30 TDI DGTE Ad Blue Reducer Dosage Control Module Unit ECU 7N0941329

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€23.95

€22.75

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Part no. A2059004113-1

Mercedes S205 Display Screen Multimedia Navigation Sat Head Unit A2059004113

€66.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6957762

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

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2059004521

Door Module Mercedes W205 GLC C253 Rear Left N/S Control Unit ECU A2059004521

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8720302

BMW 1 3 Series F20 F31 LCI Telematics Control Unit Module ATM ECE 4G 8720302

€61.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2469000005

Mercedes W176 PDC Parking Distance Control Module Unit A2469000005

€66.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2469002603-1

Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

...

Showing 1882-1980 of 12041 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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