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.
Make
Category
Subcategory
Condition
In Stock
Price
Part no. GK2T-18B955-DA
Ford Transit Custom Dashboard Radio Sat Nav Screen Monitor GK2T-18B955-DA
£360.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. GK2T-14401-DHB
Ford Transit Custom Fuse Relay Box 2.0 Diesel GK2T-14401-DHB
£56.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 3Q0959435F
Audi A3 S3 RS3 8V Entry Keyless Kessy Control Module Unit ECU 3Q0959435F
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. GK2T-18C815-HF
Ford Transit Custom Stereo Radio Media Head Unit CD Player GK2T-18C815-HF
£80.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. EK2T-14B428-RA
Ford Transit Custom Bluetooth Control Module Unit ECU EK2T-14B428-RA
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5Q0919294F
Seat Leon Mk3 VW Golf 7 PDC Parking Distance Control Module Unit ECU 5Q0919294F
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9259021
BMW F01 F07 F10 F11 F12 Camera Module Based Assist Systems Control Unit 9259021
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1K8907159B
Volkswagen Scirocco III Mk3 Impact Sound Control Module Unit 1K8907159B
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2079004300-1
Mercedes A207 Convertible Roof Control Module Unit ECU Soft Top A2079004300
£132.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9354026-2
Mini F54 F60 Operating Head Unit Screen Audio Radio Control Switch Panel 9279424
£189.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2215400231
Mercedes C216 W221 Battery Cable Negative Backup Wire A2215400231
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2219006803
Mercedes CL C216 Keyless Go Entry Module Control Unit ECU A2219006803
£142.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2219050040
Mercedes C216 Aerial Antenna Amplifier Booster Module Unit Control A2219050040
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2219004601
Mercedes CL C216 Rear SAM Module Control Unit ECU A2219004601
£180.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2219067100
Mercedes CL C216 W221 Rear Fuse Relay Box Control Unit A2219067100 A2219067000
£66.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2168200975
Mercedes W197 C216 C217 Rear Antenna Aerial Amplifier A2168200975
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1Q0035279K
VW Volkswagen Scirocco Mk3 Radio Head Unit Display Media CD Player 1Q0035279K
£127.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1K8919472A
Volkswagen Scirocco Mk3 PDC Parking Sensor Control Unit Module 1K8919472A
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A0025421119-2
Mercedes W163 W168 W203 W211 Relay Unit 4-Pin Black Set X2 A0025421119
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A0025428919-1
Mercedes W176 W246 Relay 5-Pin Yellow Hella 12V SET X2 A0025428919
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 95862083101
Porsche Cayenne 92A Fuel Tank Gauge Left N/S Sender Control Unit TDI 7P0919673
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A0025428719-1
Mercedes W176 W204 W207 W166 Relay 4 Pin Grey Hella SET X2 A0025428719
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7N0843638
Volkswagen Sharan 7N Sliding Door Catch Upper Locking Plate Right O/S 7N0843638
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1Q0035346A
VW Sharan 7N USB AUX MMI Multimedia Plug Control Module Panel 1Q0035346A
£66.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7N0959794K
VW Sharan 7N Rear Door Module Control Unit Left N/S Passenger Side 7N0959794K
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9352856
BMW F20 F21 F22 F30 F31 F32 F36 Body Control Module Electronic Unit FEM 9352856
£75.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9199389
BMW Z4 E89 Radio CD Player Head Unit BMW Professional 9199389
£61.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5Q0937086BQ
Volkswagen Golf Sportsvan Body Control Comfort Unit Module BCM Unit 5Q0937086BQ
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9131643
BMW E87 E90 E92 Seat Wiring Cable Front Right O/S Heating Loom Harness 9131643
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7N0959793H
VW Volkswagen Sharan 7N Driver's Side Door ECU Module Control Unit 7N0959793H
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7N0959792H
VW Volkswagen Sharan 7N Passenger's Side Door ECU Module Control Unit 7N0959792H
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2168200089
Mercedes CL C216 Antenna Amplifier Control Unit Module A2168200089
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8626172-7
BMW F30 F32 320iX 420iX N20 ECU Engine Control Unit DME 8626172 Manual xDrive
£237.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2219002704
Mercedes CL C216 ABC Suspension Module Control Unit ECU CL63 A2219002704
£189.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2218200210
Mercedes W221 Seat Occupancy Mat Control Unit Sensor A2218200210
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2214401908
Mercedes C216 W221 Rear Bumper Parking Assist PDC Wiring Harness A2214401908
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2168201415
Mercedes CL C216 Mobile Phone Telephone Module Wiring Loom Harness A2168201415
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. RHD-8516715
BMW F02 Engine Wiring Automatic Gearbox Harness Loom Cable 730Ld N57 8516715
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5FJ919605B
Seat Ateca Multimedia Sat Nav Display Unit Screen 5FJ919605B
£265.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2214407109
Mercedes C216 W221 Glovebox Storage Compartment Wire Harness Loom A2214407109
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2169000101
Mercedes CL C216 Door Control Unit Module ECU Front Left N/S A2169000101
£80.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2169000501
Mercedes CL C216 Comand Radio Navi Head Unit CD Player 6-Disc A2169000501
£949.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2165406507
Mercedes CL C216 Door Electrical Wiring Harness Left Right N/O/S A2165406507
£56.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2169000201
Mercedes C216 W221 Door Control Module Unit Front Right O/S A2169000201
£108.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2165406307
Mercedes CL C216 Door Electrical Wiring Harness Left Right N/O/S A2165406307
£56.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8F0959655D
Audi A5 8F Air Module Control Unit ECU Crash Control 8F0959655D
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6C1T-9K499-AFD
Ford Transit Mk7 Engine Bay Fuse Box Loom Harness Cables RWD 6C1T-9K499-AFD
£56.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 06K907309B
Audi TT FV 2.0 TFSI DKZB Engine Control Unit Module 06K907309B Automatic
£113.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9326087
BMW F34 GT Adapter Cable Wiring Loom Harness Adapter Lead Front End 9326087
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9326083
BMW F34 GT Front Bumper Wiring Cable Loom Harness 9326083
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9367673-3
Mini F55 F56 F57 MMI Visual Boost Surround Central Cover Instrument 9367673
£123.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8689722-1
BMW F20 F21 F30 F31 LCI 330i B48 252HP Petrol ECU Control DDE Kit 8689722 Manual
£474.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 510971175B
VW Volkswagen Golf SV Roof Antenna Aerial Cable Harness Wiring Loom 510971175B
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1310208
Ford Transit Mk7 AUX Connector Adapter Port Socket 3S7T-19A164-AB
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8C11-3C190-AA
Ford Transit Mk7 Yaw Sensor ESP Rotation Rate Control Unit Module 8C11-3C190-AA
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6C1T-14A076-CC
Ford Transit Mk7 Fuse Box Upper Cover Unit Housing Lid Trim Cap 6C1T-14A076-CC
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. GU5T-14B192-HA
Ford Transit Mk8 Relay High Power 5-Pin Grey FoMoCo GU5T-14B192-HA
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1828011
Ford Transit Mk8 USB AUX Port Socket Connection Media Adapter BK31-V044K62-AB
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. GK3T-9K499-BBC
Ford Transit Mk8 Engine Bay Under Bonnet Fuse Box Wiring Harness GK3T9K499BBC
£118.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 03L906018AK
Audi A3 8P 2.0 TDI CFGB 170HP Diesel Engine Control ECU 03L906018AK Automatic
£56.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6G9T-14B192-CA-1
Ford Fiesta Transit Mk7 Relay 4-Pin Black FoMoCo Unit SET X2 6G9T-14B192-CA
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8Y0035465
Audi A3 8Y A4 B9 Q5 FY Harman Speaker Amplifier Booster Sound System 8Y0035465
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 2161057
Ford Transit Mk8 Cabin Door Wiring Rear Left N/S Cable Harness GK3T-14A631-CBC
£66.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9257490
BMW F10 F11 Radio Player Alpine CD Champ 2 Audio Head Unit 9257490
£56.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A0009006304
Mercedes W906 Automatic Gearbox Transmission Module Control Unit ECU A0009006304
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4H0959793S
Audi A8 D4 Front Door Control Module Unit ECU Driver's Side 4H0959793S
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5N0035341C
Volkswagen Scirocco Mk3 Multimedia Interface Module Box 5N0035341C 5N0035342B
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9139868-1
BMW X3 E83 LCI X5 E70 LCI PDC Parking Ultrasonic Sensor Black 9139868
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6C1T-14A481-AA
Ford Transit Mk7 Fuse Box Body Control Module ECU 6C1T-14A481-AA
£47.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5Q4959593M
Seat Leon Mk3 Door Module Control Unit Front Driver's Side Door 5Q4959593M
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7636292-8
BMW F20 F21 F30 F31 116i 316i N13 136HP Engine Control ECU DME 7636292 Manual
£189.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8K1907401A
Audi A4 B8 A5 8T 2.7 TDI 190HP CGKA Engine Control ECU 8K1907401A Automatic
£85.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8674258
Mini F54 F55 F56 F57 B38 136HP Petrol Engine Control ECU DME 8674258 Manual
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 04L907309A-2
Volkswagen Golf VII 2.0 TDI 135HP CUNA Engine Control ECU Kit 04L907309A Manual
£237.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8573257-11
BMW F20 F30 F32 120d 320d 420d N47N 163HP Control ECU DDE Kit 8573257 Automatic
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8518268-5
BMW E90 E91 LCI N47N 318d 143HP Engine Control DDE ECU Kit 8518268 Automatic
£75.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 04L906021BQ-1
Audi A4 B8 A5 8T 2.0 TDI CNHC 163HP Engine Control ECU Kit 04L906021BQ Manual
£123.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9257102
BMW F01 F02 F03 F04 Front Seat Control Unit Module Memory 9257102
£32.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A6549003200-1
Mercedes W177 W205 C213 C220d 654.920 150HP Engine Unit ECU A6549003200 Automat
£66.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8691827-5
Mini Cooper F54 F55 F56 B38 136HP Engine Control ECU Kit DME 8691827 Manual
£189.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5Q4959592M
Seat Leon Mk3 Door Module Control Unit Front Passenger's Side Door 5Q4959592M
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9259358
BMW F10 F11 F30 F32 F33 Side Surround View Camera Control Unit Module 9259358
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8516754
BMW F01 F02 F03 N57S 740d 306HP Engine Control Module ECU 8516754 Automatic
£256.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 05E907309-1
Seat Leon FR 5F Mk3 1.5 TSI DADA 150HP Engine Control ECU Kit 05E907309 Manual
£113.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6977982-4
Mini Cooper R50 R53 R56 R57 R60 Relay No Contact Taubenblau Blue Set 5X 6977982
£23.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6977982-3
Mini Cooper R50 R53 R56 R57 R60 Relay No Contact Taubenblau Blue Set 4X 6977982
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6977982-2
Mini Cooper R50 R53 R56 R57 R60 Relay No Contact Taubenblau Blue Set 2X 6977982
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4H0907247
Audi A6 4G Keyless Entry Aerial Antenna Control Unit Module 4H0907247
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4H0035666L
Audi A8 D4 4H Multimedia Radio Sat Nav CD Player SD SIM Head Unit 4H0035666L
£94.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5F0919603A
Seat Leon Mk3 Head Unit Audio Radio Display Sat Nav Navigation 5F0919603A
£56.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 4H0614235
Audi A8 D4 ABS Pump Bracket Braking Unit Mount Holder Support 4H0614235
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2125420018-TNG2
Mercedes W169 W204 W212 Front Parking Sensor PDC Sensor Tenorite Grey 755
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5F4035225
Seat Leon Mk3 Antenna Amplifier Module AM/FM Left N/S Aerial Booster 5F4035225
£37.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5F4971693
Audi A1 8X Door Window Switch Loom Cable Rear Left Right N/O/S 5F4971693
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 5F4971145
Seat Leon Mk3 5F Tailgate Boot Trunk Cable Wiring Loom Harness 5F4971145
£28.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 9383683
Body Domain Controller Mini F54 F55 F56 F60 ECU BDC Control Unit Module 9383683
£89.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6927928
CAS2 Module BMW E60 E61 E63 E64 Car Key Reader Control Unit ECU 6927928
£18.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 6919113-1
BMW E81 E82 E87 E88 E90 E91 E92 E93 F10 F11 F12 Black Relays 5 Pin Set 6919113
£13.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A1718203389-1
Mercedes R171 Head Unit Radio Player Sat Nav Comand DVD APS A1718203389
£237.95
Free delivery - Mon, Dec 15
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 .