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.

More information

Make

Category

Subcategory

Condition

In Stock

Price

Products in promotion

Part no. 8506281-3

BMW E81 E87 LCI E90 N47 115HP Diesel Engine Control Unit ECU DDE 8506281 Manual

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9322532

Gateway Module BMW F01 F10 F11 F12 Central Body Control 9244262

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Battery Cable Mercedes W211 Starter Alternator Wiring Harness A2115402105

-5%

Part no. A2115402105

Battery Cable Mercedes W211 Starter Alternator Wiring Harness A2115402105

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Battery Electric Cable BMW F45 F48 Mini F56 F60 Alternator Starter Motor 8513157

-5%

Part no. 8513157

Battery Electric Cable BMW F45 F48 Mini F56 F60 Alternator Starter Motor 8513157

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8F0971030AM

Audi A5 8T Front Door Electric Wiring Loom Harness Passenger's Side 8F0971030AM

€42.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9325656

BMW F20 F21 F22 F30 F31 F32 Body Control Module Unit FEM ECU LR01 9325656

€75.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9225014-1

BMW F23 F30 Distributor External Ignition Base Control Unit Module 9225014

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Mercedes C209 W211 CLS C219 Steering Wheel Module Control Unit A0365457032

-5%

Part no. A0365457032

Mercedes C209 W211 CLS C219 Steering Wheel Module Control Unit A0365457032

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Front Impact Sensor BMW F70 G05 G14 G15 G29 Safety Crash Module Unit 9496815

-5%

Part no. 9496815

Front Impact Sensor BMW F70 G05 G14 G15 G29 Safety Crash Module Unit 9496815

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Opel Insignia A 2.0 Cdti Oil Level Crankshaft Sensor Wiring 55568953

-5%

Part no. 55568953

Opel Insignia A 2.0 Cdti Oil Level Crankshaft Sensor Wiring 55568953

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9267511

BMW X5 E70 Body Control Module Main Primary ECU Unit JBBFEIII R LP 9267511

€165.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6997612

BMW F20 F21 Air Conditioning A/C Climate Control Unit Module ECU 6997612

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9393144

BMW G11 G30 Fuse Box Power Distribution Electrical Control Unit Box Rear 9393144

€47.95

Free delivery - Wed, Dec 24

If paid before 14:00

Ford Transit Yaw Sensor ESP Rotation Rate Control Unit Module 8C11-3C190-AB

-5%

Part no. 8C11-3C190-AB

Ford Transit Yaw Sensor ESP Rotation Rate Control Unit Module 8C11-3C190-AB

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2218708992

Mercedes W221 C216 Telephone Bluetooth Connection Control Module A2218708992

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

Mercedes Sprinter W906 Fuse Box Connector Plug Socket A0535450226

-5%

Part no. A0535450226

Mercedes Sprinter W906 Fuse Box Connector Plug Socket A0535450226

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

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, Dec 24

If paid before 14:00

Part no. 9345373

BMW F10 Footwell Central Lock Gateway Control Module Unit ECU 9345373

€161.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9214812

BMW E88 E93 LCI Air Module Control Unit ECU 9214812

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9459673-1

Seat Module BMW X4 F26 F20 F30 Front Driver Side Control Unit ECU 9250421

€94.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6886185

ICM Module BMW F20 F21 F30 F31 Crash Control Unit Airbag ECU 6886185 0265020864

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2079012500

Air Module Mercedes C204 C207 Sensor Control Unit ECU A2079012500

€37.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6967184

BMW X5 X6 Series E70 E71 Positive Battery Cable Terminal Box Base B+ 6967184

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Relay Mercedes C117 GLA X156 ML W166 W176 W246 5 Pins Yellow A0035421019

-5%

Part no. A0035421019

Relay Mercedes C117 GLA X156 ML W166 W176 W246 5 Pins Yellow A0035421019

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2218207502

Mercedes W221 Front Centre Dashboard Speaker Logic 7 A2218207502

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2135409916

Earth Ground Cable Mercedes W213 S213 Battery Wiring Loom Engine A2135409916

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9233034-SBR

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

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A1635400734

Mercedes-Benz M ML W163 Rear Left Right Door Wiring Loom Harness A1635400734

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2059006537

Mercedes C205 Coupe Air Bag Control Module ECU A2059006537

€170.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A0051517401

Starter Motor Mercedes W169 W245 Diesel Engine A0051517401

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A0121542002

Mercedes W903 OM611 Diesel Alternator Engine Generator 14V 90A A0121542002

€108.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A1648207926

Mercedes ML W164 Air Module SRS Control Unit ECU A1648207926

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

VW Sharan 7N Voltage Stabilizer Converter Electric Control Unit Module 3AA919041

-5%

Part no. 3AA919041

VW Sharan 7N Voltage Stabilizer Converter Electric Control Unit Module 3AA919041

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2048207385

Mercedes-Benz C W204 Front Left Door N/S Control Unit Module A2048207385

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2539059800

Mercedes W205 Lid Boot Trunk Tailgate Smart Opener Control Module A2539059800

€37.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 4H0959792H

Audi A8 D4 4H Front Door Control Module Unit ECU Passenger Side 4H0959792H

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Mercedes W204 Headlight Range Control Unit Module ECU A1669002906

-5%

Part no. A1669002906

Mercedes W204 Headlight Range Control Unit Module ECU A1669002906

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Audi A6 C7 Fuse Battery Junction Box Fuse Distribution Terminal Centre 4G0937517

-5%

Part no. 4G0937517

Audi A6 C7 Fuse Battery Junction Box Fuse Distribution Terminal Centre 4G0937517

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 4M0907401AM

Audi Q7 4M 3.0TDI DPXB Quattro 218HP Engine Control ECU 4M0907401AM Automatic

€759.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6950364

BMW E65 E66 Front Right Door O/S Wiring Harness Carrier 6950364

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Engine Wiring BMW E90 E91 LCI N47N Loom Harness Cable Automatic Gearbox 8510249

-5%

Part no. 8510249

Engine Wiring BMW E90 E91 LCI N47N Loom Harness Cable Automatic Gearbox 8510249

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9139899

BMW F07 F10 LCI F06 F12 F13 MMI Multimedia CD Player Reader Head Unit 9139899

€51.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A1695408033

Mercedes-Benz A W169 Front Driver's Side Door Wiring Loom Harness A1695408033

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 4H0971142C

Audi A8 D4 Door Card Wiring Loom Cable Harness Rear Right O/S 4H0971142C

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A1669005417

Mercedes X117 Communication Telematics Control Module Unit ECU A1669005417

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2218101817

Mercedes-Benz W221 Rear Left Right N/O/S Headlining Interior Mirror A2218101817

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6907313

BMW E65 E66 Wiring Loom Cables Rear Bumper PDC 6907313

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9342033-1

BMW F10 F20 F30 Head Unit Media Navigation Headunit Player 9342033

€42.95

Free delivery - Wed, Dec 24

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, Dec 24

If paid before 14:00

Part no. 9282424

BMW 3 5 Series F10 F30 Control Unit Module Top Rear Side View Camera 9282424

€170.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8635816

Engine Wiring BMW F20 F30 F31 LCI B38 Automatic Gearbox Loom Harness 8635816

€61.95

Free delivery - Wed, Dec 24

If paid before 14:00

Audi A5 8T Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104

-5%

Part no. 8K0971104

Audi A5 8T Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2128203985

Mercedes W204 W212 Door Module Rear Left N/S Control Unit Module A2128203985

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9290804

BMW F20 F22 F30 F32 Module ECU Control Unit FEM Fuse Box 9290804

€227.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8K0907063AH

Audi A4 B8 Body Control Comfort Unit Module BCM ECU 8K0907063AH

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

BMW F10 F11 LCI F13 N63 N63N Petrol Water Pump Adapter Lead Cable Wiring 7601305

-5%

Part no. 7601305

BMW F10 F11 LCI F13 N63 N63N Petrol Water Pump Adapter Lead Cable Wiring 7601305

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2124405833

Door Wiring Mercedes W212 Loom Cable Rear Left Right N/O/S A2124405833

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6836504

BMW F20 F21 LCI F30 F31 F32 F13 Electric Coolant Fan Motor Relay 130A 6836504

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9294206

BMW F25 CD DVD Navigation Sat Nav Head Unit 9294206

€89.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2055401900

Mercedes W205 Parking Sensor Wiring Rear Bumper PDC Loom Cable A2055401900

€80.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8512047-5

BMW E90 E91 LCI N47N 320d ed ECU KIT DDE 8512047 CAS 2 Keys Manual Transmission

€180.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6938226-1

BMW E90 E90N E91 E91N LCI M3 Wiring loom rear door left right 6938225

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Mercedes W221 Battery Electrical Ground Line Wire Earth Cable A2215403310

-5%

Part no. lhd-A2215403310

Mercedes W221 Battery Electrical Ground Line Wire Earth Cable A2215403310

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8387551

BMW 3 Series E46 Battery Positive Cable Fuse Box Base B 8387551

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

VW Volkswagen Touareg 7L Transfer Box Control Unit Module ECU 0AD927755BE

-5%

Part no. 0AD927755BE

VW Volkswagen Touareg 7L Transfer Box Control Unit Module ECU 0AD927755BE

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A0025421319

Mercedes W204 Genuine Universal In Car Black Relay 4-Pin Tyco A0025421319

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6911038

BMW 3 X5 Series E46 E53 Airbag Side Impact Crash Sensor Bosch 6911038

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 3T1T-14301-AF

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

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9282285

BMW X3 F25 Central Gateway Module Control Unit ECU 9282285

€47.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. CC1T-10300-BD

Ford Transit Mk8 2.2 TDCi Diesel Engine Alternator Generator Unit CC1T-10300-BD

€94.95

Free delivery - Wed, Dec 24

If paid before 14:00

Audi A3 8V A5 8T A6 A7 Air Quality Sensor Control Unit 4H09076588

-5%

Part no. 4H0907658

Audi A3 8V A5 8T A6 A7 Air Quality Sensor Control Unit 4H09076588

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 7P6035670B

VW Volkswagen Touareg 7P CD Radio Stereo Head Unit Panel 7P6035670B

€389.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2218705089

Mercedes W221 Audio Amplifier Sound Harman Becker Control Unit A2218705089

€949.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8518269-6

BMW E90 E91 LCI N47N 320d 184HP ECU KIT DDE CAS 3 Key 8518269 Manual

€161.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2129006709-1

Mercedes C207 W212 Head Unit High Line Radio Sat Nav DVD Bluetooth A2129006709

€99.95

Free delivery - Wed, Dec 24

If paid before 14:00

Audi A3 8P Bluetooth Module Multimedia Control Unit Cover Unit 8P0035613

-5%

Part no. 8P0035613

Audi A3 8P Bluetooth Module Multimedia Control Unit Cover Unit 8P0035613

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8K0907064FF

Audi A4 S4 B8 Body Control Comfort Unit Module BCM2 Unit ECU 8K0907064FF

€113.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6970701-1

BMW 3 Series E93 E93N LCI 1 Rear Bumper Antenna Aerial Telephone 6970701

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2219009903

Mercedes-Benz S-Class W221 Rear Door N/O/S Control Unit Module A2219009903

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8632687

BMW i3 I01 Engine Motor Sensors Module Wiring Cable Wire Harness 8632687

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6989994

BMW E65 E66 E67 Control Unit Front Centre Console Module 6989994

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8583423-5

Mini Cooper D R60 R61 ALL4 N47N 2.0 143HP Engine ECU DDE 8583423 Automatic

€113.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 7510646

BMW 7 Series E65 E66 E67 Ventilation Hose E-Box Fan 7510646 12907510646

€23.95

Free delivery - Wed, Dec 24

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, Dec 24

If paid before 14:00

Part no. 8586572

Engine Wiring BMW F20 LCI F30 F31 B47 Automatic Gearbox Loom Harness 8586572

€42.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. K515B-K212

Chip Power Chiptuning Box GS2 K515B-K212 Control Unit Module Tuning Set

€113.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 06J971082D

Audi Q3 8U Engine Injector Module Wiring Harness Cable 2.0 TFSI 06J971082E

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2465408109

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

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8K0907247

Audi A6 4G Keyless Entry Amplifier Control Box Module Aerial Antenna 8K0907247

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A2125406905

Mercedes W212 Door Wire Wiring Loom Front Left N/S A2125406905

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Mercedes W212 Roof Antenna Amplifier Shark Selenite Grey - 992 A2128270228

-5%

Part no. A2128270228-SEL

Mercedes W212 Roof Antenna Amplifier Shark Selenite Grey - 992 A2128270228

Promo price

€23.95

€22.75

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 1508931-1

Mini Cooper S R53 Positive Battery Cable Plus Pole Wiring Loom Harness 1508931

€80.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 6975069

Mini Cooper One R50 R52 R53 Cable Door Right Wiring Harness Loom 6975062

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 8W1907063CC

Audi A4 B9 Body Control Comfort Unit Module BCM Unit ECU 8W1907063CC

€180.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A1568200089

Mercedes W176 W246 Tailgate Aerial Antenna Amplifier Unit A1568200089

€23.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 81A035466B

Audi A3 8V Bang Olufsen Audio AMP Amplifier Module Control Unit ECU 81A035466B

€379.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 7641652-1

Engine Wiring BMW F10 F31 F32 N20 Engine Sensor Module 1 Harness 7641652

€47.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. A6399001001

Mercedes W639 PDC Parking Park Sensor Distance Control Module A9064460046

€28.95

Free delivery - Wed, Dec 24

If paid before 14:00

Part no. 9337233

BMW F32 F33 F82 F83 M4 Door Wiring Front Harness Loom Cable 9337233

€32.95

Free delivery - Wed, Dec 24

If paid before 14:00

...

Showing 2674-2772 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 .

used parts volkswagen car parts mercedes used car parts cheap car parts audi auto parts spare parts genuine used audi parts bmw starters, alternators, ecus & wiring mercedes starters, alternators, ecus & wiring mini starters, alternators, ecus & wiring audi starters, alternators, ecus & wiring volkswagen starters, alternators, ecus & wiring