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. 6932452

BMW 5 6 Series E60 E61 E63 E64 Power Distribution Electrical Fuse Box 6932452

PLN 55.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 8620771

BMW F20 F21 F30 F32 N55 Power Distribution Module Bracket Cover Carrier 8620771

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1729007003

Seat Module Mercedes W204 W212 Control Unit Front Left Right N/O/S A1729007003

PLN 275.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9346799

BMW F01 F02 LCI F10 Diversity Aerial Antenna Amplifier DAB 9346799

PLN 189.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 1C0880201M

Volkswagen New Beetle Steering Wheel Air Module Driver's Side Black 1C0880201M

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6977982-2

Mini Cooper R50 R53 R56 R57 R60 Relay No Contact Taubenblau Blue Set 2X 6977982

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9226884

BMW F20 F21 LCI Antenna Amplifier Diversity 9226884

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 03L903023F

Volkswagen Golf Mk6 Alternator Generator Electrical Unit Valeo 03L903023F

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 02Z911023N

Volkswagen VW Golf VI Engine Starter Motor 1.6TDI 2.0 TDI Diesel 02Z911023N

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1665400182-1

Mercedes C292 Fuse Box Cover Trim Panel Lid Black A1665400182

PLN 184.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7586426

BMW E89 F10 F25 F26 Battery Clamp Bracket Holder 7586426

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2139065706-1

Fuse Box Mercedes W205 W213 Front Engine Compatment Relay Module A2139065706

PLN 142.95

Free delivery - Tue, Jan 13

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Part no. 9159795

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

PLN 42.95

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Part no. 1K0951253-1

VW Volkswagen Audi Seat Relay 449 12V 30A Unit Module 4 Pins 1K0951253

PLN 42.95

Delivery - Tue, Jan 13

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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 - Tue, Jan 13

If paid before 14:00

Part no. A2115406905

Mercedes CLS E Class W211 C219 Headlight Level Sensor Wiring Cable A2115406905

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 5WA919297B-DGR

Audi A3 8V Control Unit PDC Parking Sensor Daytona Grey - Z7S 5WA919297B

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6820234

Air Conditioning Module BMW F20 F21 F30 F31 A/C Control Unit 6820234

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9316569

BMW X5 F15 Fuse Box Rear Relay Module Control Unit 9316569

PLN 56.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6910542-1

BMW E46 X3 E83 Battery Cable Plus Pole Power Positive Wiring 6910542

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9220695

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

PLN 474.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 4F0959795P

Audi A6 C6 Rear Left N/S Door Lock Control Module Unit ECU 4F0959795P

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0009822723

Mercedes W205 Estate Fuse Relay Box Module Control A0009822723

PLN 42.95

Delivery - Tue, Jan 13

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Part no. 9299594

Central Gateway BMW X3 F25 X4 F26 Module Control Unit Lear ZGW-02 4SK 9299594

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 4F1910336B

Telephone Control Module Audi A8 4E S8 D3 Bluetooth Unit 4F1910336B

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1779003806

Door Module Mercedes C118 W177 W247 Front Left N/S Control Unit A1779003806

PLN 123.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8633997

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

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2188200187

Mercedes W221 Multimedia Interface USB Adapter Port Socket A2188200187

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2129060105

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129060105

PLN 132.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0025424019-1

Mercedes W906 W907 Cut Off Electric Relay Module A0025424019

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9286171

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

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9149836

Seat Control Unit BMW X5 E70 E87 E90 Module ECU Electronic Module 9149836

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 80A035223A

Audi Q5 FY Sound System Audio Amplifier Amp Unit Bang & Olufsen 80A035223A

PLN 1,899.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 93457542

Radio Player Renault Trafic III Vauxhall Vivaro B Audio Head Unit 93457542

PLN 332.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2139001722

Mercedes W213 W907 Transmission Gearbox Control Unit Module ECU A2139001722

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 5Q0907530AM

Audi A3 8V VW Passat B8 Gateway Control Unit Module 5Q0907530AM

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 06H903016L

Audi A5 8T Engine Alternator Generator 14V 140A Bosch 2.0 TFSI 06H903016L

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9390835

Sound Amplifier BMW X5 F15 X6 F16 Active Harman Becker Design 9390835

PLN 569.95

Free delivery - Tue, Jan 13

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Part no. A0009004613

EGR Module Mercedes W177 W205 Exhaust Gas Recirculation Unit ECU A0009004613

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A6549001300

Glow Plug Relay Mercedes W213 C238 Diesel OM654 Preglow Module A6549001300

PLN 113.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7835872

BMW 5 Series E60 E63 E64 Carrier Holder Amplifier/Video Module Fairing EDC

PLN 17.95

Delivery - Tue, Jan 13

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Part no. 6980177-3

BMW E81 E87 E90 E91 F10 F11 X5 E70 Relay Unit Green Set TYCO 5 Pins 6980177

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A9067601304

Mercedes-Benz Sprinter W906 Front Right Door O/S Handle Bowden Pull Cable

PLN 37.95

Delivery - Tue, Jan 13

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Part no. 9367673

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

PLN 170.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9311849

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

PLN 56.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 7794911

BMW E87 E90 E91 Cable Alternator Starter Base B 7794911

PLN 42.95

Delivery - Tue, Jan 13

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 - Tue, Jan 13

If paid before 14:00

Part no. A2025402373-1

Mercedes A C E Class 1 W169 W203 W211 OBD Diagnostic Plug Cover A2025402373

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9470037

Differential Locking Module BMW F40 F48 Rear Axle Control Unit ECU 9470037

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6915063

Ultra Sonic Module Mini R50 R53 Alarm System Sensor 6915063

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2125458040

Bracket Holder Mercedes W204 W212 W222 Auxiliary Generator Battery A2125458040

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 8585729

BMW 3 Series F30 320d N47N Engine Gearbox Module Wiring Loom Harness Cables Set

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2229067403

Mercedes W177 W247 M260 Exhaust Control Valve Flap Actuator Drive A2229067403

PLN 854.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9342080

BMW Mini Cooper F55 F56 F57 F60 Telematics Control Unit Module 2622390

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 7550468-3

BMW E81 E87 LCI E90 E91 Petrol N43 Alternator Generator 170A Denso 7550468

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0141542702-1

Alternator Generator Mercedes Vito W639 Sprinter W906 14V 120A Bosch A0141542702

PLN 284.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0009008004

Parking Module Mercedes W207 W212 PDC Distance Control Unit ECU A0009008004

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1665400841

Ground Line Mercedes ML W166 Battery Earth Negative Cable Wire A1665400841

PLN 75.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6980078

BMW E88 Antenna Amplifier Aerial Diversity Module AMP 6980078

PLN 113.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8806980

BMW i3 I01 LCI Door Wiring Cable Loom Harness Rear Left Right N/O/S 8806980

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8W0959655P

Audi A4 B9 Air Module System Control Sensor ECU Unit 8W0959655P

PLN 474.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 06L971627M

Audi Audi Q5 FY 2.0 TFSI QUATTRO Petrol Fuel Injectors Wiring Harness 06L971627M

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6929345

BMW 1 3 Series E82 E90 E92 Roof Antenna Aerial Shark Fin GPS Radio Tel 6929345

PLN 42.95

Delivery - Tue, Jan 13

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Part no. 8608020

Gearbox Module Mini F55 F56 F57 Automatic Basic Control Unit EGS 8608020

PLN 949.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 1J0927841

Audi Volkswagen Seat Skoda ESP Relay Unit Grey 444 1J0927841

PLN 42.95

Delivery - Tue, Jan 13

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Part no. 7800167

BMW E70 LCI E90 E91 LCI F10 F11 N57 Lead Preheater Wiring System Diesel 7800167

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A0009009213

Mercedes W447 Fuel Pump Control Module A0009009213

PLN 332.95

Free delivery - Tue, Jan 13

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Part no. A0045468440

Mercedes W177 Power Distributor Connector Plug Unit A0045468440

PLN 42.95

Delivery - Tue, Jan 13

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Part no. 7588502-1

BMW Mini Cooper R55 R56 N12 1.6 Petrol Engine ECU Kit DME 7588502 CAS3 Key

PLN 854.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 4H0907064FB

Audi A8 D4 BCM Module Body Control Unit Convenience ECU 4H0907064FB

PLN 189.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8507893

BMW 1 2 3 Series F20 F21 F22 F30 F31 N47N Wiring Loom Harness Engine 8507893

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 1K0909605AE

VW Volkswagen Scirocco Mk3 Air Module Control Unit ECU 1K0909605AE

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 6927786

BMW X5 Series E53 Amplifier Compensator Holder Catch Bracket 6927786

PLN 108.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 8W0907063CG

Audi Q5 FY 2.0 TFSI DAXB Petrol Supply Body Control Module Unit 8W0907063CG

PLN 332.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1695401006

Mercedes W169 W245 Rain Light Sensor Control Unit Wiring A1695401006

PLN 123.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2049014503

Mercedes W212 Rain Light Solar Condensation Sensor Control Unit A2049014503

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9267214

BMW F20 F21 F22 F30 F31 F32 F33 F34 Air Control Unit Module ECU 9267214

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2059006330

Mercedes W205 SAM Module Front Body Comfort Control Unit ECU A2059006330

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A2118703185

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

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 8W0915459E

Audi A4 B9 Battery Positive Terminal Cable Plus Pole Wiring Harness 8W0915459E

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 4E0941817A

Audi RS4 B8 Front Door Wiring Harness Loom Plug Socket 4E0941817A

PLN 42.95

Delivery - Tue, Jan 13

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Part no. A0009820112

Mercedes W177 W207 Power Energy Distribution Unit Module A0009820112

PLN 51.95

Delivery - Tue, Jan 13

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Part no. 6942990

BMW 5 6 Series E60 E61 E63 E64 Actuator Air Distribution Flap Matrix Heater

PLN 47.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. A6269060100

Starter Mercedes W205 Diesel OM626 Engine Starter Motor Bosch A6269060100

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1775408220

Door Wiring Mercedes W177 W247 Front Passenger Side Cable Harness A1775408220

PLN 142.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A1665450403

Mercedes W166 Junction Fuse Box Cover Housing Positive Terminal A1665450403

PLN 123.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9459673

Seat Module BMW X4 F26 F20 F30 Front Driver Side Control Unit ECU 7943747

PLN 237.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2139008013

Bluetooth Module Mercedes W176 W213 Control Unit Hands Free A2139008013

PLN 42.95

Delivery - Tue, Jan 13

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Part no. 3D0941329B

Volkswagen Passat B7 Headlight Cornering Module Control Unit 3D0941329B

PLN 189.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9147618

BMW X5 E70 Navigation System CCC CD Player Sat Nav Head Unit 9147618

PLN 1,234.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 06L971627K

Audi TT FY 2.0 TFSI Petrol Fuel Injectors Wiring Harness 06L971627K

PLN 61.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 9247470

BMW E90 LCI Junction Box Body Control Module Unit 9247470

PLN 94.95

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Part no. A1698207026

Mercedes-Benz A B Class W169 W245 Door Control Unit Right O/S Front A1698207026

PLN 42.95

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Part no. 4F0959795M

Audi A6 C6 Rear Door Left Right N/O/S Module Unit Control ECU 4F0959795M

PLN 42.95

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Part no. 8364542

BMW E46 X3 E83 Power Distribution Fusebox Cover Fuse Box 8364542

PLN 61.95

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Part no. 9226881

BMW 1 Series F20 F20N F21 F21N LCI Radio Aerial Antenna Amplifier AM/FM 9226881

PLN 42.95

Delivery - Tue, Jan 13

If paid before 14:00

Part no. 9335298

BMW 1 Series F20 Front Left Door N/S Wiring Loom Harness Cables 9215715

PLN 93.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. A2059008304

Mercedes W205 SAM Module Rear Body Comfort Control Unit ECU A2059008304

PLN 94.95

Free delivery - Tue, Jan 13

If paid before 14:00

Part no. 6964263

BMW 3 Series E93 E93N Cabrio Module Bracket Holder CTM 6964263

PLN 46.95

Delivery - Tue, Jan 13

If paid before 14:00

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Showing 991-1089 of 12186 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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