Automotive electrical systems
More informationAt 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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Category
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Condition
In Stock
Price
Part no. 6J0857607A
Seat Ibiza 6J Front Interiorr Headliner Roof Grab Handle Right O/S 6J0857607A
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5A4FAA3-1
BMW G30 LCI 530e Front Bumper Pedestrian Protection Shock Crash Sensor 5A4FAA3
£80.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. rhd-A2124404138
Positive Battery Cable Mercedes S212 C218 X218 Starter Alternator A2124404138
£37.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 02T911023S
Starter Motor Seat Ibiza 6J VW Volkswagen Polo 6R 1.2 Petrol Engine 02T911023S
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 6J4971161D
Seat Ibiza 6J 6J4971161D Door Wiring Harness Rear Right O/S 6J4971161D
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5A57781-2
BMW F44 M235iX B48E 306HP Engine Unit ECU KIT DME 5A57781 BDC Key Automatic
£712.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 03E906023AA
Seat Ibiza 6J 1.2 CGPA 69HP Engine Control Unit Module ECU 03E906023AA Manual
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. A1669005517
Mercedes W207 Telematic Communication Control Unit Module A1669005517
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. A2129008729
Keyless Module Mercedes W176 W207 W212 ECU Door Lock Control Unit A2129008729
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. RHD-A2074402307
Mercedes W207 Locking System Control Unit Module Wiring Cable A2074402307
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. A2189006806
Mercedes W207 Harman Control Unit Module Amplifier Premium Sound A2189006806
£522.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8725027
Door Wiring BMW F44 Gran Coupe Door Wiring Harness Loom Driver's Side 8725027
£47.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8V0906259J
Audi A3 8V S3 2.0 TFSI DJHA 310HP Quattro Engine ECU 8V0906259J Automatic
£189.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. A2189015200
Mercedes X218 Air Module Control Unit ECU Module A2189015200
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4H0907658B
Audi A3 8V A5 A6 A7 Air Quality Sensor Unit 4H0907658B
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. A2389000401
Mercedes C238 E53 Coupe Window Lifter Comfort Module Unit Rear A2389000401
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. A2189000104
Mercedes CLS X218 Parktronic PDC Parking Assist Control Module A2189000104
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. A2128270228-ING
Mercedes W212 Estate Roof Antenna Cover Shark Indium Grey Metallic A2128270228
£22.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8486997
Mini F55 F56 F57 Integrated Supply Module Electrical Control Unit Module 8486997
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8727960
BMW F44 Door Cable Harness Passenger Side Wire Wiring 8727991
£56.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 6839355
BMW F44 Gran Coupe Antenna Amplifier Suppresion Filter 6839355
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 9874188
BMW F44 Air Conditioning A/C Climate Control Unit Module ECU 5A68369
£66.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. RHD-5A065D4
BMW F40 F44 Multimedia Radio Sat Nav Screen Display Head Unit 5A065D4 12822810
£85.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. A2129008816
Mercedes X218 Radio Comand Navigation Seat Control Unit Module A2129008816
£218.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 8727997
BMW F44 Gran Coupe Door Wiring Harness Rear Door Right Left N/O/S 8727996
£37.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 6879835
Air Module BMW F20 F23 F30 F32 F36 Domain Control Module ICM Plus Unit 6879835
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 6876893
Sensor BMW F82 F80 F34 Lane Change Warning Module Master Rear Right O/S 66876893
£89.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 6829104
Head Unit BMW F20 F21 F30 F31 LCI Radio Media Player Sat Nav High 2 6829104
£256.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 6881597
BMW M3 F80 LCI VDC Controler Adaptive M Suspension Mode Control Module 6881597
£42.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WA959354
VW Volkswagen Golf Mk8 Air Module Control Unit Crash Impact Sensor 5WA959354
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5Q0959593L
VW Golf CD1 Front Door Right O/S Driver Side Module Control Unit ECU 5Q0959593L
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5H9971693BL
VW Volkswagen Golf CD1 Rear Door Left N/S Harness Wiring Cable Loom 5H9971693BL
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5H9971694BL
VW Volkswagen Golf CD1 Rear Door Right O/S Harness Wiring Cable Loom 5H9971694BL
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WB907530K
Volkswagen Golf CD1 Diagnostic Interface Gateway Module ECU Control 5WB907530K
£56.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WA959436P
Volkswagen Golf CD1 Keyless Go Module ECU Entry Control Unit 5WA959436P
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WA907007AC
Volkswagen Golf Mk8 Air Conditioning A/C Control Unit Module 5WA907007AB
£94.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5H0035820R
Volkswagen Golf Mk8 CD1 Head Unit Navigation Multimedia Control Unit 5H0035820R
£284.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5Q0955559C
Volkswagen Golf 8 Rain Sensor Front Windscreen 5Q0955559C
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8V3971036J
Audi A3 S3 8V Door Card Wiring Harness Passenger Front Left N/S 8V3971036J
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5H2971641AC
Volkswagen Golf CD1 Front Dashboard Console Wiring Loom Harness 5H2971641AC
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WA937548C
Volkswagen Golf CD1 Positive Battery Plus Pole Terminal Lead Cable 5WA937548C
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5H6035577T
VW Golf Mk8 Antenna Amplifier Rear Boot Lid Tailgate Right O/S 5H6035577T
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 0AM911022C
Volkswagen Golf Mk8 Engine Starter Motor Assembly Unit 0AM911022C
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WA937086BT
VW Volkswagen Golf CD1 Module BCM Body Control Unit Module ECU 5WA937086BS
£151.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WA971226B
Volkswagen Golf Mk8 1.5 eTSI Engine Voltage Converter Cable Wiring 5WA971226B
£47.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8T8035570-1
Audi A4 B8 Radio Antenna Noise Signal Disturbance Suppressor 8T8035570
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5QA919283A
Audi A3 S3 8V VW Golf 7 Seat Leon 3 Parking Assist PDC Control Module 5QA919283A
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4M0035446
Audi A3 S3 8V Mobile Comunication Sygnal 2-Way Amplifier Compenser 4M0035446
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8V0971104
Audi A3 S3 8V Sportback Wiring Harness PDC Parking Sensor Rear Bumper 8V0971104
£32.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 4M0035507
Audi A3 8V A4 B9 Telephone Antenna Amplifier Module Unit Booster 4M0035507
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 7PP941572AC
Audi A5 F5 Xenon Headlight Resistor Ballast Relay Module Unit 7PP941572AC
£66.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WA962132
Volkswagen Golf Mk8 Antenna Amplifier Transmitter Receiver Module ECU 5WA962132
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5WA915343B
Battery Bracket VW Golf 8 CD1 Audi A3 8Y Battery Clamp Holder 5WA915343B
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5Q0951605B
Audi Seat Skoda Volkswagen Golf Mk8 Anti Theft Alarm Siren 5Q0951605B
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. A2129060505
Fuse Box Mercedes W212 Rear Relay Control Unit Electric Module SAM A2129060505
£32.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. RHD-6R2971121JE
VW Volkswagen Polo 6R Passenger's Side Door Wiring Harness Loom 6R2971121JD
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5H0971385F
Volkswagen Golf Mk8 CD1 Rear Seat Couch Wiring Harness Cable Loom 5H0971385F
£56.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5H0963554
Volkswagen Golf Mk8 Rear Seat Bench Couch Occupancy Sensor Unit 5H0963554
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 6R0971839A
VW Volkswagen Polo 6R 1.2 TSI Petrol Fuel Sender Pump Cover Panel 6R0971839A
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8588946-2
BMW X3 F25 20dX 190HP B47 Engine Control Unit ECU Kit DDE 8588946 Key CAS4
£284.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 0AD927755BE
VW Volkswagen Touareg 7L Transfer Box Control Unit Module ECU 0AD927755BE
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5A49005
BMW X3 G01 X4 G02 Cable Harness Rear Left Right N/O/S Door Wiring Loom 5A49003
£42.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 7428425-3
Headlight Module BMW F20 F21 LCI Front Lamp Hedlamp LED Control Unit 7428425
£37.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8572873-2
BMW F10 F11 535d N57Z 313HP Engine ECU Kit DDE 8572873 Key CAS4 Automatic
£332.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5N0035342F
VW Volskwagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342F
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 1K3959857B
Volkswagen Polo 6R Golf Mk6 3-Door Window Lifter Switch Driver's Side 1K3959857A
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 9385025
Control Unit BMW F07 F10 F11 F12 F13 F25 Air Module ECU Unit Continental 9385025
£51.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5B34AB1
Head Unit BMW G20 G30 X3 G01 X4 G02 High 3 Control Module Harman 5B34AB1
£522.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5A923C4
BMW F40 G20 G21 G30 G31 X3 G01 HiFi Audio Sound Amplifier RAM Module 5A923C4
£170.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5A70A60
BMW X3 G01 Parking Distance PDC Module Control Unit 5A70A60
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5A19DB2
Tailgate Lift Module BMW G20 G30 G12 Rear Boot Trunk Lid Control ECU 5A19DB2
£32.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. rhd-6J4971120CL
Seat Ibiza 6J Door Wiring Front Right O/S Harness Loom Cable 6J4971120CH
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 6J4971161M
Seat Ibiza 6J Door Wiring Rear Right O/S Harness Loom Cable 6J4971161M
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. rhd-6J4971121AN
Seat Ibiza 6J Door Wiring Front Left N/S Harness Loom Cable 6J4971121AN
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8K5907357
Audi A4 B8 Headlight Headlamp Range Control Unit Module 8K5907357
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5A7A559
Blind Spot Sensor BMW G01 G20 G21 G30 G31 Radar Range Module SRR-01 Rear 5A7A559
£142.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 3D0909139B
Volkswagen Touareg 7L Entry Module Keyless Go Control Unit ECU 3D0909139B
£66.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 1J6035111
VW Volkswagen Touareg 7L Golf 4 CD Changer 1J6035111
£28.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 5A48F83
BMW X3 G01 Door Front Right O/S Wiring Harness Loom 5A48F83
£37.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8K0907472
Audi A4 B8 Headlight Headlamp LED Module Control Unit 8K0907472
£32.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8K0907063N
Audi A4 B8 Body Control Comfort Unit Module BCM Unit ECU 8K0907063N
£42.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8K0919475R
Parking Module Audi A4 B8 A5 8T PDC Sensor Control Unit 8K0919475R
£56.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 3D0909601F
VW Volkswagen Touareg 7L Air Module Control Unit ECU SRS 3D0909601F
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 7L0907719A
Volkswagen Touareg Anti Theft Alarm System Control Module Unit ECU 7L0907719A
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. F60 REAR PDC
Mini F60 Rear Parking Sensor PDC Bumper Wiring Loom Cable Harness Wire
£51.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 2449488
Head Unit Mini F55 F56 Navigation Head Unit Radio DAB Media Player 2449488
£284.95
Free delivery - Thu, Dec 18
If paid before 14:00
Part no. 8693213-2
BMW F30 LCI 330e B48X Engine Control Unit ECU Kit DME 8693213 FEM Key Automatic
£617.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 03L906022MK-1
Audi A4 B8 2.0 TDI Diesel CAGA Engine Control Unit ECU Kit 03L906022MK Key
£189.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. rhd-A2535400401
Mercedes X253 Alternator Wiring Harness Loom Cable Busbar A2535400401
£37.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 7L0909606D
Volkswagen Touareg 7L Front Impact Crash Sensor Right Left N/O/S 7L0909606D
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 03L911024A
Audi A4 B8 A5 8T 2.0 TDI Diesel Engine Starter Motor Assembly Unit 03L911024A
£47.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. CRTD4BT-1
BMW Power Box Module Chip Tunning ECU TDI Tunning CRTD4BT
£42.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 9259581
BMW X3 F25 Map Card Fuse Box Grouping Diagram 9259581
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8574091-4
BMW F25 20dX N47N 184HP ECU Kit Control Unit DDE 8574091 CAS4 Key Manual
£284.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. rhd-A2218205389
Mercedes W221 Central Audio Navi Sat Display Screen Multi Media A2218205389
£51.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 3U0941597A
Seat Ibiza 6J Relay Black Control Unit 7 Pin 12V 3U0941597A
£13.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 1K0906093H
Seat Ibiza 6J 1.2 TSI Petrol Fuel Pump Control Unit Relay 1K0906093H
£23.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8506373-3
BMW X3 E83 LCI 2.0d N47 177HP Engine Control Unit ECU DDE 8506373 Automatic
£85.95
Free delivery - Wed, Dec 17
If paid before 14:00
Part no. 8T0959792G
Audi A4 B8 Front Door Lock System Module Right O/S Control Unit ECU 8T0959792B
£18.95
Free delivery - Wed, Dec 17
If paid before 14:00
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 .