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. 8577238

BMW F30 F31 Sterter Motor Alternator Cable Wiring Loom Harness 8577238

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9187541-1

BMW E88 ECU Body Control Module H3 PL2 JBBFE II Junction Box 9187541

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6976964

BMW 3 5 X5 Series E39 E46 E53 BMW Radio Professional TMC Unit 6976963

€227.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A1765450000

Mercedes-Benz A-Class W176 Bluetooth Unit Module Bracket Holder A1765450000

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9436289

BMW G20 G21 Rear Door Wiring Loom Cable Control Unit Left Right N/O/S 8718245

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6964141

BMW 7 Series E65 E66 E67 Control Unit Module Door Front Driver Side 6964141

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7798006

BMW E60 E61 E87 LCI E81 E82 X1 E84 E90 E91 N47 Diesel Starter Motor 7798006

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9226901

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

€56.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 3455304

Mini R57 Cabrio DWA Door Alarm Theft Deterrent System Unit 3455304

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2789060600

Mercedes W166 R172 W205 C207 W212 C216 Engine Starter Motor 12V A2789060600

€51.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8K0971228H

Audi A4 B8 3.0 TDI Starter Alternator Wiring Loom Cable Harness 8K0971228H

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0035453501

Mercedes Vaneo W414 Sprinter W901 W902 W903 Fuse Box Battery A0035453501

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8K590735700

Audi A5 8T Front Lamp Xenon Headlight Range Control Module 8K590735700

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6933529

BMW 5 Series E60 E61 Centre Console Switch Centre DSC 6933529

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8584276

BMW F30 F31 320d Engine Control Unit ECU DDE ed Diesel N47N 163HP 8584276

€80.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0018275101

Mercedes W164 Tyre Pressure Sensor Rear Right Left Antenna Module A0018275101

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 4M0959795N

Audi A4 B9 Door Module Rear Left Right N/O/S Control Unit Module ECU 4M0959795N

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9384214

BMW F10 ECU Body Control Module V2 PL6 JBBFE III Junction Box 9384214

€66.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8506444-3

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8506444 CAS3 + Key

€256.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9199305

KaFAS Camera BMW F10 F11 Rear View Control Unit Module 9199305

€89.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6926435

BMW 1 3 Series E87 E90 Mini R56 R57 Seat Control Unit Module Heating 6926435

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7565300-18

BMW Z4 E85 2.0 N46 150HP Engine Module ECU Kit DME 7565300 + EWS + Key Manual

€303.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2218708992

Mercedes W221 C216 Telephone Bluetooth Connection Control Module A2218708992

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8585380-1

BMW F30 330d F32 430d N57N 258HP Control Unit ECU Kit DDE 8585380 FEM Key

€284.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8636596

BMW 1 3 Series F20 F21 F30 F31 Line Cable Power Distribution Module 8636596

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8796289

BMW X3 G01 X4 G02 X5 G05 Battery Terminal Negative Cable Wire Wiring 8796289

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8621500

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

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2229001809

Mercedes W205 W222 Door Module Front Left N/S Control Unit ECU A2229001809

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6766003

BMW X3 E83 Z4 E85 E86 Fuel Pump Module Control Unit 6766003

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A6396890379

Mercedes Viano Vito W639 Radio Fan Adapter Control Unit Module A6396890379

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 4H0959792F

VW Touareg 7P Front Door Control Module Unit ECU Passenger Side 4H0959792F

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 3D0907040H

VW Volkswagen Phaeton 3D Climate Air Conditioning Control Module Unit 3D0907040H

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9116978

BMW X5 Series E70 Cable Loom Door Rear Left Right N/O/S Wiring Harness 9116978

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8685853

BMW F40 X1 F48 Mini F55 F56 F60 Engine Injector Wiring Loom Harness 8685853

€85.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A1725400035

Electrical Cable Mercedes R172 Transmission To Body Wiring Harness A1725400035

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A1715409245

Mercedes SLK R171 Gateway Control Unit Gateway Module ECU A1715409245

€37.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6799677

BMW F11 Touring Rear Axle Air Suspension Control Unit ECU Module 6799677

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A1679003118

Door Module Mercedes W205 W213 X253 Front Right O/S Control Unit A1679003118

€75.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A9075400500

Mercedes W907 Battery Cable Wiring Loom Harness Cabling A9075400500

€75.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A1679008309

Mercedes W177 W247 Telematics Module Communication Control Unit A1679008309

€42.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9253637

BMW 3 5 Series F10 F11 F30 F31 Airbag Control Unit Module 9253637 65779253637

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0009002308

Mercedes W447 W906 Adblue Module Exhaust Gas Control Unit ECU A0009002308

€89.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9231091

Bluetooth Control BMW E60 E87 E90 Telematics Unit Module 9231091

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8663284

BMW F20 F30 F31 LCI B38 ECU Basic DME Control Unit Automatic Gearbox 8663284

€313.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A6397600104

Bowden Cable Mercedes W639 Vito Door Handle Catch Top Rear Left Wire A6397600104

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7799855-2

BMW 1 3 5 Series E60 E87 E90 M47N2 120d 320d 520d ECU Kit DDE CAS2 Key 7799855

€541.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9806332

Mini R60 R61 Ultra Sonic Module Alarm System Sensor 9806332

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2079001100

Door Module Mercedes C207 W207 Front Left N/S Control Unit ECU A2079001100

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0009004839

Mercedes C118 W177 C247 Battery Control Module Unit ECU A0009004839

€284.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8R0907468N

Audi A5 8T Gateway Control Module Unit ECU 8R0907468N

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9811263

Mini Cooper R60 Wiring Loom Front Door Cables Passenger Side 9811263

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 4F1941824A

Audi A5 F5 Fuse Box Control Module Connector Plug Socket Wiring Loom 4F1941824A

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9294912

BMW F10 F11 X5 F15 X6 F16 Rear Seat Compartment Screen Display SET 9294912

€569.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. G2412-154530-B

VW Amarok Mk2 Headlight Headlamp Control Unit Module Sensor G2412-154530-B

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A1669004719

Audio Amplifier Mercedes W166 C292 Sound Control Unit Harman Kardon A1669004719

€712.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 2HJ962211N

Volkswagen Amarok Mk2 Engine Earth Ground Wiring Harnes Cable MB3T-18C942-BF

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9184810

BMW X6 E71 Wiring Set Wash Water Container Cable Loom 9184810

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8579479-2

BMW F20 F21 F30 116d 316d N47N 116HP Engine Control Unit ECU DDE 8579479 Manual

€89.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 0AM911023R

Audi A3 8V 1.4 TSI Petrol Starter Motor Engine Actuator Unit 0AM911023R

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6921857

BMW X5 E39 E46 E53 Motorola Hands-free Electronics Control Unit ECU 6921857

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6938664

BMW E65 E66 Control Unit Front Centre Console Module 6938664

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6927025-1

Window Lifter Drive BMW E87 E90 E91 Motor Rear Left 6927025

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9325884

BMW F36 Door Cable Front Driver's Door Wiring Loom Harness 9325884

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7809955-4

BMW E60 E90 X5 E70 3.0sd 335d 535d M57N2 Engine ECU KIT DDE 7810980 CAS3 + Key

€617.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7253188-2

BMW E92 Seat Covering Panel Sports Left Right Thigh Support Cover Black Leather

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9286785

BMW X1 E84 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9286785

€37.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9154413

BMW E93 Convertible GPS Aerial Antenna Unit Module 9154413

€23.95

Free delivery - Wed, Jan 14

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, Jan 14

If paid before 14:00

Part no. lhd-A2215403310

Mercedes W221 Battery Electrical Ground Line Wire Earth Cable A2215403310

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A9065420518

Mercedes-Benz W639 W906 ESP Yaw Rotation Rate Sensor Control Unit A9065420518

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9286236

BMW F30 Door Wiring Front Passenger Door Loom Cables Harness F31 9286236

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7586426

BMW E89 F10 F25 F26 Battery Clamp Bracket Holder 7586426

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 5J0919506

Seat Ibiza 6J 1.2 TSI CBZB Radiator Fan Relay Module Control Unit ECU 5J0919506

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6839355

BMW F44 Gran Coupe Antenna Amplifier Suppresion Filter 6839355

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7514610

Injection Valve Wiring BMW E60 E61 E65 N62 N62N Ignition Loom Harness 7514610

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7L0941824A

Volkswagen Touareg 7L Fuse Box Module Electrical Relay Control Unit 7L0941828A

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2078205489

Mercedes-Benz W207 A207 Left Right A-Pillar Radio Aerial Antenna Amplifier Unit

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 240801846R

Renault Trafic III Vauxhall Vivaro B Positive Battery Cable Lead Wire 240801846R

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6835346

Mini F60 Rear Door Harness Loom Cable Wiring Left Right N/O/S 6835346

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 4M0971349Q

Audi Q7 4M Electric Alternator Starter Positive Wiring Harness Cable 4M0971349Q

€28.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8W0907777L

Audi RS5 F5 Chassis Module Control Unit 8W0907777L

€313.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8T0035223AH

Audi A4 B8 8K A5 8T Amplifier Audio Sound Booster Module 8T0035223

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 1J0906381A

VW Volkswagen Transporter T5 Golf Mk4 Fuel Pump Relay Unit Grey 109 1J0906381A

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0038212751

Mercedes-Benz M S W221 ML W164 Airbag Impact Crash Sensor Door A0038212751

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8W6907217B

Audi A5 F5 Front Windscreen Windshield Lane Assist Camera 8W6907217B

€56.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6800903

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

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6985363

BMW E60 E61 E63 E64 Body Gateway Module 61356985363 6985363

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 3452166

BMW X3 E83 Air Module Control Unit ECU 3452166

€37.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2218703086

Mercedes W221 Seat Module Front Right O/S Memory Control Unit A2218703086

€37.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 6866990

Airbag Module BMW F01 F02 LCI F10 F11 F13 Air Bag ECU ICM Control Unit 6866990

€56.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2079011700

Airbag Module Mercedes W204 W207 Air Bag SRS Control Unit ECU A2079011700

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 1744987

BMW E39 Battery Clamp Fuse Cable Positive 1744987

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A0014460340

Mercedes W245 B150 CDI OM266.920 Engine Control Unit Module ECU A0014460340

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A2229000016

Entry Module Mercedes C253 W205 W213 C238 Keyless Go Control Unit A2229000016

€56.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7199885

BMW E93 Cabrio Convertible Folding Top Roof ECU Module CTM 7199885 7199882

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 8644492

Engine Wiring Mini F56 F60 BMW F45 F46 Petrol Sensor Module 2 Harness 8644492

€70.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 7640508-2

BMW 1 3 4 Series F20 F21 F30 F31 F32 F33 Cooling Fan Control Unit Radiator

€32.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. A6397600204

Bowden Cable Mercedes W639 Door Handle Catch Top Rear Right O/S Wire A6397600204

€23.95

Free delivery - Wed, Jan 14

If paid before 14:00

Part no. 9248369

Radio Player BMW F10 F11 F12 Alpine CD Champ Head Unit Controller 9248369

€75.95

Free delivery - Wed, Jan 14

If paid before 14:00

...

Showing 1189-1287 of 12466 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