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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Part no. 9315130
Door Wiring Harness BMW F25 Rear Left Right Door N/O/S Wiring Loom 9315130
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 9267517
BMW X3 F25 X4 F26 Central Gateway Module Control Unit Lear 9267517
£28.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2129001806
Mercedes A207 C207 SAM Control Unit Module Fuse Box Rear A2129001806
£56.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. QLM2245
Mercedes C117 W176 Xtrons Multimedia Player Radio Head Unit Android QLM2245
£284.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8W0971659B
Audi A4 B9 Dashboard Air Vent Wiring Loom Harnes Cable Passenger Side 8W0971659B
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2789001300-2
Mercedes W166 ML63 4-Matic M157 585HP Engine Unit ECU Kit A2789001300 Automatic
£854.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 3452223
BMW X3 Series E83 LCI Wiring Harness Engine Gearbox Module 3452223
£23.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2218203375
Mercedes W221 Bluetooth Antenna AMP Amplifier Module A2218203375
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 5N1971121G
Volkswagen Tiguan 5N Door Wiring Front Passenger Side Cable Harness 5N1971121G
£18.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 03L906018JR-1
Audi A4 B8 2.0 TDI CJCB Engine Control Unit Module ECU Kit 03L906018JR Manual
£237.95
Free delivery - Thu, Nov 06
If paid before 14:00

Part no. A2098209810
Mercedes CLK A209 Cabrio Alarm Anti Theft System Control Module Unit A2098209810
£23.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 6971884
BMW X5 X6 Series E70 E71 Front Central Bass Subwoofer Speaker HiFi 6971884
£18.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8K9035225A
Antenna Amplifier Audi A4 S4 B8 Radio Aerial AM/FM 8K9035225A
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2535405429
Mercedes C253 OM656 Diesel Engine Motor Wiring Loom Cable Harness A2535405429
£18.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A1729002611
Mercedes SLK R172 Rear Fuse Box Relay Control Unit SAM Body Module A1729002611
£170.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 7640004-10
Mini One R55 R56 Petrol N12 1.4 95HP Engine ECU Kit DME 7640004 CAS3 Key Manual
£142.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 5Q0907530AM
Audi A3 8V VW Passat B8 Gateway Control Unit Module 5Q0907530AM
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A1775401740
Mercedes V177 Electrical Wiring Harness Left Right N/O/S A1775401740
£28.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2235408444
Mercedes W206 C220 Footwell Fuse Box Trim Right O/S A2235408444
£47.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. STAR-BATTERIES-80AH
Star Batteries SB115AGM Car Battery AGM Start Stop 12V 80Ah 800EN
£132.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 5Q0035874A
Skoda Rapid Spaceback NH1 Multimedia Audio Sat Nav Head Unit 5Q0035874A
£175.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 9142218-SBG
BMW X3 E83 LCI PDC Parking Ultrasonic Sensor Silbergrau - A08 9139866 SET X2
£23.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 5G0035222C
Seat Leon Mk3 5F Media In Port Socket Connection Adapter 5G0035222C
£23.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 03L906022FL
Audi A6 C6 3.0 TDI 233HP Diesel Engine Control Unit ECU Kit Module 03L906022FL
£142.95
Free delivery - Thu, Nov 06
If paid before 14:00

Part no. 9247088
BMW X1 Series E84 Wiring Loom Harness Passenger Side 9233559
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2661536379
Mercedes-Benz A-Class W169 A150 Engine Control Unit Module A2661536379 Manual
£28.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A1635461237
Mercedes-Benz M ML W164 Door Cable Harness Wiring Loom Rear Left N/S 13542340
£18.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A1715453040
Mercedes R171 Rear Bracket Navigation Multimedia Processor Mount A1715453040
£37.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A4475401755
Earth Ground Cable Mercedes Vito W447 Positive Battery Lead Wiring A4475401755
£56.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8X0959792K
Audi Q3 8U Front Door Module Control Unit ECU Passenger Side 8X0959792H
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2048709189
Mercedes-Benz C-Class W204 Left N/S Antenna Amplifier Filter Module A2048709189
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 05E907309CA-1
Audi A3 8Y 30 TFSI 1.5 DXDE 115HP Engine Module Control Unit 05E907309CA Manual
£237.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. DRIVETEC-80AH
DriveTec Heavy Duty 12V Accumulator Car Battery 80Ah 800A DM110
£94.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 9380982
Mini F55 F56 Telematic Telephone Cell Phone Control Module Unit ECU 9380982
£104.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8507202-4
BMW E90 E91 LCI 318d N47N 143HP Engine Control ECU Kit DDE 8507202 Automatic
£132.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2124405733
Mercedes W212 Wiring Loom Cable Driver's Door Front Wiring Harness A2124405733
£18.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2069003517
Mercedes W206 Ignition Control Module Unit A2069003517
£184.95
Free delivery - Wed, Nov 05
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 - Wed, Nov 05
If paid before 14:00

Part no. rhd-A2044402713
Battery Cable Mercedes W204 C207 Alternator Wiring Harness A2044402713
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. RHD-A2135402840
Mercedes W213 Full Display Widescreen Glass LCD Instrument Cluster A2135402840
£237.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8510591-8
BMW X1 E84 20dX N47 177HP Engine Control Module Unit ECU DDE 8510591 Manual
£66.95
Free delivery - Wed, Nov 05
If paid before 14:00
Part no. 4C2231ADA
Mini R50 Control Unit Immobiliser Tracker Module ECU 4C2231ADA
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A6461505072-1
Mercedes W211 E220 CDI 646.821 170HP Engine ECU Kit A6461505072 Ignition + Key
£189.95
Free delivery - Thu, Nov 06
If paid before 14:00

Part no. A2465403505
Door Wiring Mercedes W176 W246 Front Passenger Side Cable Harness A2465403505
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 80A907247A
Audi Q5 FY Keyless Entry Amplifier Control Box Module Aerial Antenna 80A907247A
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8J0937121A
Audi TT 8J MK2 Telephone Controller ECU Box 8J0937121A
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 7811176
Wiring BMW X3 F25 Automatic Gearbox Module Engine Wiring Harness 7811176
£94.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 9163173
BMW E60 E61 LCi Right Left Rear Door Wiring Loom N/O/S 9120797
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8633997
Ground Line BMW G11 G12 G20 G30 G31 Battery Earth Cable Wire 8633997
£18.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 5A180E1
BMW U06 Active Tourer Control Unit Module 5A180E1
£18.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. KV6T13A840ACB
Ford Transit Connect Wiring Harness Cable Loom Assy KV61T13A840ACB
£18.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A0009006102
Mercedes Vito W639 ECU Control Unit Crash Impact Module Air Module A0009006102
£47.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2139008330
Mercedes W177 W213 W247 Automatic Gearbox Control Unit Module ECU A2139008330
£75.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 7PP907530P
Porsche Cayenne 92A Gateway Control Module Unit 7PP907530P
£32.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 9270050-SOP
BMW F01 F10 F11 PDC Parking Sensor Sophistograu Grey Metallic - A90 Set x2
£23.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A1775404107-1
Fuse Box Mercedes C118 W177 W247 Battery Relay Terminal A1775404107
£51.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A1669004811
Mercedes ML W166 GL X166 Air Suspension Control Unit Module ECU A1669004811
£66.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 5A0BD89
BMW F40 Power Distribution Fuse Box LIN Control Unit Module 5A0BD89
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 03L906022NN
Audi A4 B8 2.0 TDI 143HP CAGA Diesel Engine Control Unit ECU Module 03L906022NN
£94.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2229002112
Door Module Mercedes W205 GLC C253 Control Unit Rear Right O/S A2229002112
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8K5907551D-1
Audi S5 8T 3.0 TFSI CGWC 333HP Quattro Engine ECU Kit Ignition + Key 8K5907551D
£284.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. rhd-A2475402506
Control Unit Bracket Mercedes W177 W247 SAM Module Panel Cover A2475402506
£28.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 6949229-1
2 x Mini R52 Convertible DWA Door Alarm System Module Control Unit Set 6949229
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2465401350
Fuse Box Mercedes W156 W176 W246 Front Relay Control Unit Module A2465401350
£23.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 9269983
BMW F06 Electric Wiring Cable Loom Harness 9269983
£28.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 4L2035670K
Audi Q7 4L Head Unit Radio Player Navigation Control Module Alpine 4L2035670K
£360.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8654635
Mini Cooper S F55 F56 Petrol Positive Battery Alternator Starter Cable 8654635
£18.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A1699007800
Mercedes W169 W639 COMAND Navigation Head Unit Radio Sat Nav Screen A1699007800
£332.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 5A53059
Heater Module BMW F40 F44 Air Conditioning System Control Unit ECU 5A53059
£47.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 5A180E3
BMW U06 G01 Heater Actuator Motor Fresh Air Flap Regulator 5A180E3
£37.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 6795086
BMW F01 F02 F07 Air Suspension Control Unit Module 6795086
£51.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A0005458416
Mercedes W639 Automatic Gearbox Control Unit Module ECU A0005458416
£237.95
Free delivery - Thu, Nov 06
If paid before 14:00

Part no. H1BT14B531CA
Ford Transit Connect Mk2 II Door Control Module ECU Front Right O/S H1BT14B531CA
£42.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 2379303
Engine Wiring Mini One F57 Petrol B38 Loom Cable Harness Injector Module 2379303
£23.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 1K0907530AC
Audi A3 8P Central Gateway Control Unit Module Relay ECU 1K0907530AC
£23.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 6C0951171-1
Volkswagen Polo 6R Mk5 Roof Alarm Monitor Module Sensor Unit 6C0951171
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8582279-10
BMW F20 F30 F32 120dX 320dX 420dX N47N 184HP Engine ECU Kit DDE 8582279 Manual
£56.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A1669009411
Mercedes ML W166 GL X166 Body Comfort Control Unit SAM Module ECU A2139003208
£94.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 406349
Mini Cooper One R50 R52 R53 iPod Interface Control Unit Module 0406349
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 5H9971694AC
VW Volkswagen Golf Mk8 Door Cable Rear Right O/S Harness Wiring Loom 5H9971694AC
£47.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 6967184
BMW X5 X6 Series E70 E71 Positive Battery Cable Terminal Box Base B+ 6967184
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. rhd-7549857
Engine Wiring BMW E60 E61 E63 N62 Injector Ignition Loom Harness Cable 7549857
£32.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. RHD-A2641503301
Mercedes C200 W205 Petrol M264 Engine Wiring Harness Loom A2641503301
£256.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8Y4971104AP
Audi S3 8Y Rear Bumper PDC Parking Sensor Wiring Harness Loom 8Y4971104AP
£61.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8T0035223AB
Audi A4 B8 8K A5 8T Sound System Audio Amplifier Amp Unit 8T0035223AB
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A1635409008
Mercedes-Benz M ML W163 Radio Aerial Antenna Amplifier Wiring Loom A1635409008
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. rhd-A2055409406
Door Wiring Mercedes W205 Rear Door Left N/S Wiring Harness Loom A2055409406
£18.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A0009003909
Mercedes SLK R172 C207 BlueTEC Adblue SCR Module Control Unit A0009003909
£28.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A1648202715
Electrical Wiring Cable Mercedes W164 W251 Radio Media Interface A1648202715
£23.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 9367700
PDC Wiring BMW X6 F16 Rear Bumper Park Assist Wiring Harness Loom 9367700
£56.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 6900583-1
BMW 7 Series E65 E66 Cable Wire Power Distribution Box 6900583
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 7PP959663E-1
Porsche Cayenne 92A VW Touareg 7P Voltage Stabilizer Control Module 7PP959663E
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2168201415
Mercedes CL C216 Mobile Phone Telephone Module Wiring Loom Harness A2168201415
£32.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 8634246
Mini F54 F60 B42 B46 B48 Ignition Injection Valve Wiring Harness Loom 8634246
£94.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 7N0880742
Volkswagen Sharan 7N Head Air Module Roof Side Curtain Right O/S 7N0880742
£32.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 3427749
BMW X3 Series E83 Cable Loom Door Passenger Side Wiring Harness 3412570
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 7552638
BMW Z4 Series E85 N52 Roadster Earth Cable Battery 7552638
£13.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. A2711500420
Mercedes W204 M271 Solenoid SOLV Valve Wiring Harness Petrol A2711500420
£28.95
Free delivery - Wed, Nov 05
If paid before 14:00

Part no. 4H0907357A
Audi A7 4G8 Headlight Head Light Lamp Range Control Unit Module ECU 4H0907357A
£13.95
Free delivery - Wed, Nov 05
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 .