What is a car electrical system?

This is a set of components responsible for powering and controlling all electrical functions in the car – from engine starting to multimedia.

What is an alternator for in a car?

The alternator generates electrical current when the engine is running and charges the battery.

What is the difference between a starter and an alternator?

The starter motor is used solely to start the engine, while the alternator is responsible for generating energy while driving.

How to check if the battery is working?

Just measure its voltage – a healthy battery should have approximately 12.6 V at rest and maintain a voltage above 10 V during cranking.

What are the most common symptoms of car electrical failure?

Problems starting the engine, flashing warning lights, power windows not working or dimming lights.

Do electrical parts from one model fit another?

Sometimes yes, but the key is to match it by VIN or OEM number – this guarantees compatibility.

How often should you check your electrical system?

It is worth performing basic diagnostics (battery, alternator) at least once a year or before a long trip.

Automotive electrical systems

At Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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Part no. 8633997

Ground Line BMW G11 G12 G20 G30 G31 Battery Earth Cable Wire 8633997

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2049009410

Mercedes W204 CD Player Radio Stereo Navigation Sat Nav Head Unit A2049009410

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009003206

Mercedes W205 W222 Fuel Pump Module Control Unit A0009003206

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0959795N

Door Module Audi A4 B8 A6 C6 Rear Unit Control ECU Left N/S 4F0959795N

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9229007

BMW F10 Antenna Amplifier Diversity 868 MHZ 9229007

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1679004712

Bluetooth Module Mercedes W205 W213 W222 W238 Control Unit ECU A1679004712

PLN 94.95

Free delivery - Mon, Nov 24

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Part no. A0131545602

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

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 2757044

Mini R55 R56 R57 R58 Right O/S Electric Window Lifter Motor 2757044

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6G9T-14B192-DA

Ford Galaxy Mondeo Transit Relay 4-Pin Black FoMoCo Unit 6G9T-14B192-DA

PLN 47.95

Delivery - Mon, Nov 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

PLN 569.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9352786

BMW F33 F83 M4 Convertible Folding Top Roof ECU Module Control Unit CTM 9352786

PLN 712.95

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Part no. 4G8959792G

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

PLN 42.95

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Part no. 4F0953549A

Audi S6 C6 Steering Column Wiper Switch Stalk Cruize Control 4F0953549A

PLN 142.95

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Part no. A2049005601

Mercedes W204 S204 Estate SAM Control Unit Module Rear A2049005601

PLN 123.95

Free delivery - Mon, Nov 24

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Part no. 4G8959793A

AUDI A7 4G8 Door Control Module Front Left N/S Driver Side 4G8959793A

PLN 42.95

Delivery - Mon, Nov 24

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Part no. A1648209385

Mercedes ML W164 Door Module Front Left N/S Control Unit Module A1648209385

PLN 142.95

Free delivery - Mon, Nov 24

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Part no. 8590045

BMW G20 G21 G01 G02 B47B B47D Engine Injector Module Wiring Harness 8590045

PLN 160.95

Free delivery - Mon, Nov 24

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Part no. 9322122-2

Display Screen BMW F20 F21 F22 Central Information Sat Nav Monitor 6,5" 9322122

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1S0919275D-MRE

Audi A5 8T PDC Parking Distance Control Sensor 1S0919275D Misano Red Pearl - Z3M

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9075402087

Mercedes W907 Starter Wiring Battery Alternator Cable Harness Loom A9075401305

PLN 227.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2035451303

Mercedes CL203 W203 Fuse Box Cover Engine Bay Relay A2035451303

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7607705

Mini Cooper One R56 N16 Automatic Gearbox Basic Control Unit EGS 7607705

PLN 331.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 2706050200

Lexus LS400 1UZFE V8 Petrol Engine Alternator Generator Denso 2706050200

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2469067100-1

Mercedes W176 W246 C117 Fuse Relay Box Unit Cables Wiring Loom A2469067100

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6819333

BMW F30 Rear Body Control Unit Module V2 6819333

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9159795

BMW X5 X6 E70 E71 Control Unit Air Module Bag ECU Unit Bosch 9159795

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9289385

BMW F10 F34 GT Telematics Module Bluetooth Telematik Control Unit 9289385

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7835892

BMW 5 6 Series E60 E61N M5 E63 M6 Cable Starter Base B+ Engine Battery 7835892

PLN 42.95

Delivery - Mon, Nov 24

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Part no. A4475406777

Alternator Wire Mercedes Vito W447 Battery Alternator Cable A4475406777

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2124407038

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124407038

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9176878

BMW E81 Body Control Module Unit BCM ECU L2 9176878

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A9069000401

Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9069000401

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6956750

BMW E87 Control Unit PDC Parking Sensor Module Nautikblau Blue - A21 6956750

PLN 94.95

Free delivery - Mon, Nov 24

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Part no. 9136726

BMW Mini Cooper One R55 R56 Multifuse B Battery Power Distributor 9136726

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139005613

Mercedes W213 Front Door Module Right O/S Control Unit A2139005613

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9215184

BMW E60 E87 E90 E91 Hands Free Electronics Charging Module MULF2 9215184

PLN 189.95

Free delivery - Mon, Nov 24

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Part no. 6902285

BMW E39 E87 E90 E91 Trigger Contact PDC Sensor Tweeter Gong 6902285

PLN 61.95

Free delivery - Mon, Nov 24

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Part no. 9131649

Driver Seat Cable BMW E81 E82 E87 E88 Sensor Mat Wiring 9131649

PLN 42.95

Delivery - Mon, Nov 24

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Part no. 7810860-1

BMW 3 Series E90 E91 E92 E93 LCI N47N Engine Alternator Starter Cable B 7810860

PLN 47.95

Delivery - Mon, Nov 24

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Part no. 9389286

Door Wiring Mini Clubman F54 Front Passanger Side N/S Door Harness 9389286

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9270386

BMW E88 Body Control Module ECU Unit JBBFE IIIR H4 PL2RR 9270386

PLN 142.95

Free delivery - Mon, Nov 24

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Part no. 7N0941329

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

PLN 94.95

Free delivery - Mon, Nov 24

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Part no. A6394405009

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6394405009

PLN 37.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2045408735

Mercedes W204 Front Seat Air Module Wiring Cable Front Right A2045408735

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9131850

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

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9347470

BMW 1 3 Series F20 F21 F30 Control Unit Controller Touch 9347470

PLN 275.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 95B907553T

Porsche Macan 95B Air Suspension Control Module Unit ECU 95B907553T

PLN 1,044.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2539009309

Mercedes C253 W293 Rain And Light Sensor Control Unit Module ECU A2539009309

PLN 332.95

Free delivery - Mon, Nov 24

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 - Mon, Nov 24

If paid before 14:00

Part no. 5N0035342G

VW Volskwagen Polo 6R Multimedia Electronic ECU Control Unit Module 5N0035342G

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6929760-1

Mini Cooper R52 Cabrio Aerial Base Roof Antenna 6929760

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8367769

BMW X3 Series E83 Battery cable holder mounting parts B Base 8367769

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A1669005605

Door Module Mercedes W176 W246 Front Left N/S Control Unit VST A1669005605

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9282285

BMW X3 F25 Central Gateway Module Control Unit ECU 9282285

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4M1907468D

Audi A4 B9 Gateway Control Module Unit ECU 4M1907468D

Product currently unavailable

Part no. A2465408109

Door Wiring Mercedes W176 Loom Cable Rear Left Right N/O/S A2465408109

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 3Q0907338E

Audi S3 8V Front Headlight Lamp Range Control Module ECU 3Q0907338E

PLN 104.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2475400600

Mercedes W177 Rear Axle Wheel RPM Speed Right Sensor Wire Harness A2475400600

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9279391

BMW 5 G11 G30 M5 Door Crash Sensor Front 9279391

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9154358

BMW E81 E87 E90 Hands-Free Electronics Charging Module MULF 9154358

PLN 275.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0009003713

Mercedes W205 Tyre Pressure Control Module Unit A0009003713

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1779008103

Mercedes W177 W247 Telematics Module Communication Control Unit A1779008103

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 2751445

Mini Cooper One R56 R55 R57 R58 LCi Retaining plate fuse box SPEG 2751445

PLN 18.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9153135

BMW F01 F02 F03 Holder Bracket Control Unit Amplifier 9153135

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8627098

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

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6952477

BMW 5 Series E60 E61 Centre Console Switch Centre DTC PDC 6952477

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0937125A

Fuse Relay Box Volkswagen Audi Skoda Seat Engine Bay Supply Unit 5Q0937125A

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9367673

Mini Cooper F55 F56 F57 Visual Boost Surround Central Cover Instrument 9367673

PLN 170.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9X2Q9A361CA

Range Rover L320 Sport Rear Fuel Pump Control Unit Bracket Holder 9X2Q9A361CA

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 9184559

Seat Control Module BMW E60 X5 E70 ECU Seat Unit Controller 9184559

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 6958446

BMW E65 E66 E67 Control Unit Door Front Passenger Side Module ECU 6958446

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9160187

BMW 1 Series E81 Body Control Module ECU L2 PL2 JBBFE II Junction Box 9160187

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8P0035535

Audi A4 B7 Amplifier Bracket Aerial Antenna Module Mount Holder 8P0035535

PLN 47.95

Delivery - Mon, Nov 24

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Part no. 9274276

BMW F07 Gran Tourismo Headlight Footwell Light Control Module FRMIII 9274276

PLN 218.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7621178-1

BMW E81 E87 LCI E90 N43 118i 318i ECU Kit DME CAS3 Key 7621178 Manual

PLN 759.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5N0971228

VW Volkswagen Tiguan 5N Positive Battery Terminal Cable Lead Wiring 5N0971228

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. A2125406105

Mercedes W212 Rear LED Wiring Cable Harness Loom A2125406105

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A1698203185

Mercedes-Benz A B Class W169 W245 Door Control Module Left Rear N/S A1698203185

PLN 46.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8516739-6

Mini SD R56 LCI R60 143HP N47N Engine ECU Kit DDE 8516739 + CAS3 + Key, Manual

PLN 949.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A0141541302

Alternator Mercedes W164 W221 W251 Engine Generator 220A Valeo A0009063522

PLN 351.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2139062202

Mercedes W213 W222 Fuse Box Rear Electrical Fuse Unit Module A2139062202

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. A2229009519-1

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

PLN 2,279.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 9209183

Sound Speaker BMW X3 F20 F21 F25 Mid Range Stereo HiFi 9209183

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 6948182

BMW E60 E61 LCI Alarm System Unit Ultra Sonic Module

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 7075907

BMW Z4 E85 Left N/S Contact Bush 7075907

PLN 94.95

Free delivery - Mon, Nov 24

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Part no. A0004461160

Mercedes Sprinter W906 FleetBoard Onboard Time Recorder Control Unit A0004461160

PLN 474.95

Free delivery - Mon, Nov 24

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Part no. A6519002803-3

Mercedes Vito W447 114 CDI OM651.950 Engine ECU Kit Ignition + 2 Key A6519002803

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 283930431R

Roof Microphone Mercedes Citan W415 Interior Mic Unit Wiring Cable 283930431R

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8512415-7

Mini Cooper SD R60 ALL4 N47N 143HP Engine ECU Kit DDE 8512415 CAS3 Key Manual

PLN 949.95

Free delivery - Mon, Nov 24

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Part no. 8621500

BMW F20 F21 F30 LCI Petrol N13 N20 Cable Alternator Starter Base B+ 8621500

PLN 61.95

Free delivery - Mon, Nov 24

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Part no. 7574294

Mini Cooper S R56 Automatic Gearbox TCU ECU Control Unit EGS Module 7574294

PLN 189.95

Free delivery - Mon, Nov 24

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Part no. 4H4907357B

Audi A8 D4 Headlight Head Light Lamp Range Control Unit Module ECU 4H4907357B

PLN 379.95

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Part no. 8574091-3

BMW F10 520d N47N 184HP ECU Kit Control Unit DDE 8574091 CAS4 + Key

PLN 569.95

Free delivery - Mon, Nov 24

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Part no. 5F4971194A

Seat Leon 5F Rear Bumper Wiring Loom PDC Harness Parking Sensor 5F4971194A

PLN 61.95

Free delivery - Mon, Nov 24

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Part no. 6807395

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

PLN 42.95

Delivery - Mon, Nov 24

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Part no. 9298961

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9298961

PLN 75.95

Free delivery - Mon, Nov 24

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Part no. 8510221-16

BMW E90 E91 E92 LCI 325d Diesel N57 204HP ECU Engine Module DDE 8510221 Manual

PLN 332.95

Free delivery - Mon, Nov 24

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Part no. A6395460035

Mercedes Vito W447 W639 Battery Terminal Protection Cap Cover A6395460035

PLN 42.95

Delivery - Mon, Nov 24

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Part no. A9075402605

Mercedes W907 Fuse Box Control Unit Module Q2 A9075402605

PLN 284.95

Free delivery - Mon, Nov 24

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Showing 397-495 of 11489 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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