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. A4479053905

Mercedes W447 Aerial Antenna Amplifier Control Unit Module A4479053905

€56.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 5A374F9

BMW F40 Radio CD Player Head Unit Navigation Sat Nav CIC Alpine 5A374F9

€450.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 5QA919283G

Audi A3 8V Park Parking Assist PDC Distance Control Unit Module 5QA919283G

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7515253

Mini Cooper One R50 R52 R53 R55 R56 R57 R58 R59 R60 R61 Earth Ground Cable

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2049060205-1

Mercedes C204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

€37.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2108207626

Mercedes-Benz C E W202 W210 Front Right Door O/S Control Module A2108207626

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 391144A240

Hyundai H-1 2.5 Diesel Engine Control Unit Module 39114-4A240 Manual

€279.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0045452905

Mercedes Relay Fuse Unit Module 4 Pins Grey A0045452905

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6938975

BMW E60 E61 E63 E64 6-disc Compact CD Changer 6938975

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2059006615

Mercedes W205 Windscreen Rain Sensor Front Control Unit A2059006615

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A6541592200

Mercedes X253 Engine Wiring Cable Cover Duct Bracket Channel OM654 A6541592200

€42.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 1EA907376B

Audi A3 S3 8Y Rear Suspension Damper Module Control Unit ECU 1EA907376B

€56.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 1K0907115

Volkswagen Golf V GTI 2.0 TFSI AXX 200HP Engine Control ECU Kit 1K0907115 Manual

€165.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. ML34-13C148-AE

VW Volkswagen Amarok NF Front Lamp Headlight Control Unit Module ML3413C148AE

€70.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A1718204026

Mercedes SLK R171 Rain Sensor Front Windscreen Light A1718204026

€37.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2139002422

Mercedes W213 Front Door Module Control Module Unit Right O/S A2139002422

€85.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 05L907309

Audi A4 B9 A5 F5 30 TDI DTNB 136HP Engine Control Unit ECU 05L907309 Automatic

€284.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 3Q0907338

Audi S3 8V Front Headlight Lamp Range Control Module ECU 3Q0907338

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9454245

Differential Locking Module BMW F90 M5 G20 Rear Axle Control Unit ECU 9454245

€66.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A6394460132

Mercedes Vito Viano W639 Side Sliding Door Control Unit Module A6394460132

€284.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2469017000

Mercedes W176 Windscreen Rain Sensor Unit Module A2469017000

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2044407441

Earth Ground Cable Mercedes W204 W207 W212 W218 Battery Wiring Loom A2044407441

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7120204

BMW E93 Cable Wiring Loom Harness Hydraulic Pump 7120204 7191362

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7561834-13

BMW E87 E90 120i 320i N46 150HP Engine Control DME Module 7561834 Automatic

€346.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 90494959

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

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 3412336

BMW X3 E83 Battery Cable Negative Wiring 3412336

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8586540-2

BMW F30 F32 LCI 330dX 430dX N57N 258HP Control Unit ECU Kit DDE 8586540 FEM Key

€332.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7P6919475

Volkswagen Touareg 7P PDC Parking Distance Control Module 7P6919475

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2118201626

Mercedes S211 W211 Rear Door Control Unit Right O/S A2118201626

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8V0907451

Audi A3 8V Sun Light Solar Sensor Control Detector 8V0907451

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 1Z0919475B

Skoda Yeti 5L Octavia Mk2 Parking Distance Control Unit Module PDC 1Z0919475B

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9307421

Camera Control Unit BMW F20 F21 F30 F31 KaFAS 2 Camera Module ECU 9307421

€66.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9177118

CD Changer BMW X5 E70 X6 E71 Mini R55 R56 R57 6 Disc Changer Unit 9177118

€37.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9171948

BMW X5 X6 E70 E71 Air Module Control ECU Unit Module 9171948 0285010250

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2049012704

Mercedes W204 ECU Control Unit Crash Impact Sensor Air Module A2049012704

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 02E911024M

Audi A3 8V 2.0 TFSI DJHA Starter Motor 12V 02E911024M

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9252812

BMW F10 F11 F01 Fuse Box Power Distribution Junction Relay Rear 9252812

€51.95

Free delivery - Wed, Jan 14

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, Jan 14

If paid before 14:00

Part no. 6820386

Mini F54 F55 F56 Operating Unit Audio Radio Control Switch Panel 6820386

€474.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8K0959793N

Audi Q5 8R Front Door Module Control Unit ECU Driver's Side 8K0959793N

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0009007604

Adblue Module Mercedes W205 W213 W177 W907 SCR Control Unit EGR ECU A0009007604

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0009006713

PDC Module Mercedes W176 W246 Parking Assist Distance Control Unit A0009006713

€47.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7391043

BMW F10 X1 F48 Mini F54 Rear Tailgate Smart Opener Bottom Wire Sensor 7391043

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 3450847

BMW X3 E83 LCI Cable Loom Door Passenger Side Wiring Harness 3450838

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9390501

BMW 3 4 Series F31 F32 F80 M3 F82 M4 LCI USB Charger Adapter Socket 9390501

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7011612

BMW 7 Series E65 E66 E67 Centre Console Coinbox With Vent Storage Compartment

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6934095

BMW 7 Series E65 E66 Door Wiring Harness Rear Right Left N/O/S

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 1431172-2

Ford Transit Mk7 Engine Cooling Fan Radiator Module Control Unit 940002904

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6922528

BMW 5 Series E61 E61N LCI Holder Bracket Additional Battery 6922528

€26.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9805075680

Citroen Relay Peugeot Boxer III Engine Glow Plugs Wiring Harness 9805075680

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 1S0919275D-FSI

Audi Q3 8U PDC Parking Distance Control Sensor 1S0919275D Foil Silver - Z7G

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6854031

BMW F01 F02 F03 F07 F10 F11 F12 LCI Active Steering Control Unit Module 6854031

€165.95

Free delivery - Wed, Jan 14

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, Jan 14

If paid before 14:00

Part no. 510971693J

Volkswagen Golf Sportsvan Door Harness Rear Left N/S Door Wiring Loom 510971693J

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8693213-1

BMW F30 LCI 330e B48X Engine Control Unit ECU Kit DME 8693213 FEM Key Automatic

€740.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 3Q0959435D

Audi TT FV Mk3 8S Keyless Module Control Unit Comfort Access 3Q0959435D

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A6399003701

Mercedes W639 Tire Tyre Pressure Control Module Unit A6399003701

€113.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A1635409008

Mercedes-Benz M ML W163 Radio Aerial Antenna Amplifier Wiring Loom A1635409008

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9347822-1

BMW F10 F11 F20 F30 Head Unit Navigation Sat Nav High Control Module 9347822

€170.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2129000306

Mercedes W212 Fuel Pump Module Control Unit A2129000306

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6882963

Air Module BMW F01 F02 LCI F07 GT F10 F11 F13 ECU ICM Control Unit 6882963

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9258350

Air Module BMW F20 F21 F22 F30 F31 F32 Control Unit ECU 9258350

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2045406662

Mercedes-Benz C W204 PDC Parking Sensor Distance Control Module A2045406662

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8573260-7

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 Key FEM Lock Manual

€441.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2045409533

Mercedes W204 Door Wiring Front Right O/S Door Cable Harness A2045409533

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A9067600404

Bowden Cable Mercedes W906 Rear Sliding Door Opener Cable Wire A9067600404

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6942551

BMW E87 E90 E91 Front Left N/S Seat Lordosis Pad Adapter Lead Wiring

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 5Q0971230HH

Audi S3 8V Starter Alternator Wiring Harness 5Q0971230HH

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A1698200611

Mercedes W245 Bluetooth Module Telephone Control Unit A1698200611

€89.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2139005311

Mercedes W213 Head Unit CD Media Player Audio Auto Radio Controller A2139005311

€170.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A1685453532-2

Mercedes W168 A140 ESP + HBA Electronic Stability Control Module A1685453532

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7176068

BMW X3 E46 E63 E83 Mini R50 R53 Control Unit Xenon Light 1307329074

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9278279

Mini R55 R56 LCI Instrument Cluster Speedo Navigation Display Screen 9278279

€104.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 2753721

Mini R55 R56 Electric Window Lifter Actuator Motor Door Left N/S 2753721

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0051513901-1

Mercedes W203 W211 Kompressor M271 Petrol Engine Starter Motor A0051513901

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 5Q0951605B

Audi Seat Skoda Volkswagen Golf Mk8 Anti Theft Alarm Siren 5Q0951605B

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 3C0937125A

Volkswagen Tiguan 5N Engine Bay Fuse Relay Box Terminal 3C0937125A

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6906347-1

BMW X5 E53 Rear Bumper PDC Plug Socket Loom Cable 6906347

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6922652

BMW X3 E91 E83 Sunroof Sliding Roof Drive Unit Motor Actuator 6922652

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9337879

BMW 1 3 4 Series F20 F21 F30 F31 F34 Power Distribution Fuse Box Front 9337879

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9168335

BMW X1 E84 Antenna Amplifier Diversity 868 MHZ 9168335

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2038219751

Mercedes C-Class W203 Roof Alarm Motion Sensor Cover Trim Grey A2038219751

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8586573

BMW F20 F30 LCI Wiring Harness Engine Gearbox Module 120dX 320dX B47 8586573

€165.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 1371248

Ford Transit Mk7 Minus Negative Battery Mass Cable Wiring Loom 6C1T-14303-DA

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8632554

Fuse Box Cover BMW X3 G01 X4 G02 Trim Panel Lid Housing Bracket 8632554

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9189906-1

BMW E88 E93 Air Module Control Unit ECU 9189906

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0009057908

Mercedes C238 Rear Bumper Blind Spot Radar Sensor Left Right N/O/S A0009057908

€151.95

Free delivery - Wed, Jan 14

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, Jan 14

If paid before 14:00

Part no. 7631932

Engine Wiring BMW F30 F31 N20 Loom Module Harness Cable 7631932

€75.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 5Q0915181D

Audi A3 S3 8V Negative Battery Terminal Cable Harness Wiring Loom 5Q0915181D

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2059008118

Telematics Module Mercedes W176 W205 W218 Communication Control Unit A2059008118

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2469064201

Antenna Amplifier Mercedes X117 W176 W205 Rear Aerial Module A2469064201

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A9079009304

Mercedes Sprinter W907 Radar Sensor Distance Active Brake System A9079009304

€56.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2465450500

Mercedes-Benz A B W176 W246 Gearbox Control Module Bracket Holder A2465450500

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2055406621

Starter Cable Mercedes W205 GLC X253 Electrical Wiring Harness A2055406621

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A6519007401-3

Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine ECU A6519007401 Key

€189.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 191906383C

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 191906383C

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6925945

BMW 5 Series E60 E61 Rear Left Right Door N/O/S Wiring Cable Harness Loom

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9127088

BMW E81 E90 DC/DC Torque Converter Module Wandler 9253208 9127088

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

...

Showing 2674-2772 of 12469 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