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. A6401500434-1
Mercedes W169 A160 CDI OM640.942 82HP Engine Unit ECU Kit A6401500434 Automatic
PLN 949.95
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. A1779008206
Mercedes W177 Ambience Illumination Light Control Module Unit A1779008206
Promo price
PLN 142.95
PLN 128.66
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 9270356-2
Fuse Carrier BMW F40 Mini F55 F56 F57 F60 Distribution Box 9270356
Promo price
PLN 94.95
PLN 90.20
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 7311541
BMW 2 Series F22 F87 M2 Rear Third Stoplamp Stop Lamp Brake Light White 7311541
Promo price
PLN 74.95
PLN 71.20
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A2761508800
Starter Cover Mercedes W205 W212 W213 M276 Heat Plate Motor Shield A2761508800
Promo price
PLN 94.95
PLN 90.20
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 8664661
BMW F23 F30 F32 220i 320i 420i N20 184HP Engine Module ECU DME 8664661 Automatic
Promo price
PLN 1,424.95
PLN 997.47
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 9227238
BMW E93 LCI Boot Trunk Lid Tailgate Wiring Loom Harness Cable 9227238
Promo price
PLN 189.95
PLN 170.96
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 8621486
BMW F20 F21 LCI F36 F87 M2 N55 Cable Alternator Starter Base B Wiring 8621486
Promo price
PLN 142.95
PLN 128.66
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 9347470
BMW 1 3 Series F20 F21 F30 Control Unit Controller Touch 9347470
Promo price
PLN 42.95
PLN 38.66
Delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 8K0971036B
Audi RS4 B8 Door Wiring Harness Cable Loom Front Right O/S 8K0971036B
Promo price
PLN 123.95
PLN 111.56
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 7L5971204
Porsche Cayenne 955 Washer Spray Nozzle Wiring Loom Cable 7L5971204
PLN 75.95
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 7545150-1
BMW X5 E53 3.0i M54 231HP ECU Engine Kit DME 7545150 Automatic Key EWS
PLN 712.95
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 03L906022FL
Audi A6 C6 3.0 TDI 233HP Diesel Engine Control Unit ECU Kit Module 03L906022FL
Promo price
PLN 474.95
PLN 332.47
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 6964142
BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver-Side 6933266
Promo price
PLN 18.95
PLN 18.00
Delivery - Mon, Dec 22
If paid before 14:00
Part no. BK2T14A094BA
Ford Transit Mk8 Battery Fuse Box BK2T14A094BA
PLN 189.95
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 8U0907468AC
Audi A1 8X Q3 8U Central Gateway Control Unit Module Relay ECU 8U0907468AC
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A2044409005
Mercedes W204 Battery Wiring Starter Alternator Wiring Harness A2044409005
Promo price
PLN 61.95
PLN 58.85
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 8584276
BMW F30 F31 320d Engine Control Unit ECU DDE ed Diesel N47N 163HP 8584276
Promo price
PLN 379.95
PLN 341.96
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 8P0862335S
Audi S3 8P Interface Bluetooth Control Module Harman Becker ECU 8P0862335S
Promo price
PLN 61.95
PLN 58.85
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 4H0907182H
Audi A8 D4 4H Front Seat Backrest Control Module Unit ECU 4H0907182H
Promo price
PLN 170.95
PLN 162.40
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 504092575
Iveco Daily 3 Electrical Wire Earth Cable Battery Power Wiring 504092575
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 9154358
BMW E81 E87 E90 Hands-Free Electronics Charging Module MULF 9154358
Promo price
PLN 275.95
PLN 193.17
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 5Q0907530AL
Audi A3 8V VW Golf 5G Central Gateway Control Unit Module Relay ECU 5Q0907530AL
PLN 42.95
Delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 6956939-1
Changer Unit BMW E63 E64 6-disc Compact CD Head Player 6956939
Promo price
PLN 189.95
PLN 132.97
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 9190107
BMW Z4 E89 Battery B+ Engine Compartment Terminal Point 9190107
PLN 61.95
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 5M0907357C
Volkswagen VW Tiguan 5N Headlight Range Control Unit Module ECU 5M0907357C
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 7L0937576B
Audi Q7 4L Fuse Box Trim Cover Panel Electrical Unit Housing 7L0937576B
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. A1729007600
Seat Module Mercedes W204 Front Right O/S Memory Control Unit A1729007600
Promo price
PLN 237.95
PLN 214.16
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 1439743
BMW E46 X5 E53 E60 E65 X3 E83 Z4 E85 Z3 Cable Alternator Starter 1439743
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 7899655
Rear Speaker BMW E63 E64 Door Card Loudspeaker Left Right N/O/S Logic 7 7899655
Promo price
PLN 132.95
PLN 126.30
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. CVS-012-5
CVS-012-5 Expansion Module Electrical Unit Light Control Module
Promo price
PLN 113.95
PLN 79.77
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 9118468
BMW X5 X6 Series E70 E71 Seat Backrest Adjustment Adapter Lead Cable 9118468
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. A2048701226
Mercedes S204 Door Module Rear Right O/S Control Unit ECU A2048701226
Promo price
PLN 94.95
PLN 85.46
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 9304728
PDC Wiring BMW X3 F25 Front Bumper Loom Cable Harness Parking Sensors 9304728
Promo price
PLN 427.95
PLN 385.16
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 7621178-1
BMW E81 E87 LCI E90 N43 118i 318i ECU Kit DME CAS3 Key 7621178 Manual
Promo price
PLN 759.95
PLN 531.97
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 4F0971765
Audi A6 C6 Wing Mirror Adjustment Switch Wiring Loom Cable 4F0971765
PLN 42.95
Delivery - Mon, Dec 22
If paid before 14:00
Part no. 8626472-1
BMW F20 F21 M135i N55 326HP Petrol Engine Control Unit ECU DME 8626472 Automatic
PLN 1,234.95
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 7P6971121H
VW Volkswagen Touareg 7P Door Wiring Loom Harness Front Left N/S 7P6971121C
PLN 123.95
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 1K0907719C
Audi A3 8P Anti Theft Alarm System Control Module Unit ECU 1K0907719C
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 9141048
BMW E60 E87 E90 E91 Hands-Free Electronics Charging MULF2 9141048
Promo price
PLN 379.95
PLN 265.97
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 93BB14488AB
Ford Focus Mk2 Starter Motor Engine Actuator Cable Wiring Unit 93BB14488AB
Promo price
PLN 56.95
PLN 54.10
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A2215450601
Mercedes W221 Dashboard Fuse Box Front Left N/S Control Module A2215450601
Promo price
PLN 75.95
PLN 72.15
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 8517727
Mini Cooper D R60 N47N Engine Control Unit ECU 8517727 Manual
Promo price
PLN 237.95
PLN 214.16
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 8617703
Engine Wiring Mini F56 Cooper S B46 B48 Valvetronic Cable Loom Harness 8617703
Promo price
PLN 759.95
PLN 531.97
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. BK2T18D815GD
Ford Transit Custom MK8 Radio Stereo Audio USB Head Unit Panel BK2T18D815GD
Promo price
PLN 237.95
PLN 214.16
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 6950525-1
2 x BMW E63 E64 E93 Alarm System Module Sensor DWA Control Unit Set 6950525
Promo price
PLN 47.95
PLN 45.55
Delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 4E0035785D
Audi A4 B8 A5 8T MMI Multimedia Interface Control Unit Module 4E0035785D
Promo price
PLN 422.95
PLN 380.66
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 8482365
BMW G20 Installation Cable Wiring Loom 8482365
Promo price
PLN 94.95
PLN 85.46
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. A4479002405
Head Unit Mercedes W447 Radio Navigation Audio 15 Control Unit A4479002405
PLN 474.95
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 5L0051236H
Skoda Yeti 5L Octavia III Card Map Sat Navi Navigation Europe 2015 5L0051236H
PLN 80.95
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A1635450440
Mercedes-Benz M-Class ML W163 Holder Bracket Engine Control Unit A1635450440
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 2T1411000BC
Ford Transit Connect Starter Motor Engine Diesel 2T1411000BC
Promo price
PLN 218.95
PLN 153.27
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 7806042
Mini R55 R56 Connecting Wiring Cable Cooper D W16 Diesel 7806042
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A2128201789
Mercedes W212 Antenna Amplifier Aerial Module C Pillar Left N/S A2128201789
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A2049001506
Mercedes W204 Coupe Door Module Front Right O/S Control Unit A2049001506
Promo price
PLN 75.95
PLN 72.15
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 6932399
BMW X5 E53 Cable Loom Plug Socket Connector Wiring Harness 6932399 6932396
Promo price
PLN 47.95
PLN 45.55
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 8K0959663
Audi A4 B8 A5 8T Voltage Stabilizer Converter Control Unit Module 8K0959663
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
Part no. 8T0035570
Audi A6 C6 Interference Disturbance Suppressor Filter Module 8T0035570
PLN 42.95
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A0005406904
Mercedes X253 Ground Line Battery Earth Cable Wire A0005406904
Promo price
PLN 94.95
PLN 90.20
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 4M0959760A
Audi A5 F5 Seat Module Control Unit ECU Front Left Right N/O/S 4M0959760A
PLN 379.95
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 2Q0971537AN
Volkswagen Polo Mk6 AW Battery Negative Cable Wiring Earth Line 2Q0971537AN
Promo price
PLN 94.95
PLN 90.20
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 7645837
BMW i3 I01 Electric Gearbox Gear Shifting Actuator Module Unit 7645837
Promo price
PLN 474.95
PLN 332.47
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 5N0035552K
VW Tiguan 5N Antenna Amplifier Module Control Right O/S Unit 5N0035552K
Promo price
PLN 61.95
PLN 58.85
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 5Q0959651
Audi A3 8V Front Impact Sensor Crash Detection Module Unit 5Q0959651
Promo price
PLN 94.95
PLN 90.20
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 8E0959643B
Audi A4 B7 Crash Impact Airbag Sensor Unit Module 8E0959643B
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 5QS959655A
Audi A3 S3 8Y Air Module Crash Impact Sensor Unit Control ECU 5QS959655A
Promo price
PLN 1,044.95
PLN 731.47
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A0038208426
Crash Sensor Mercedes ML W164 W221 Front Rear Impact Airbag Unit A0038208426
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
Part no. 3Q0907338
Audi S3 8V Front Headlight Lamp Range Control Module ECU 3Q0907338
PLN 237.95
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 9231515
BMW F31 Rear Antenna Aerial Amplifier AM/FM DAB 9231515
Promo price
PLN 189.95
PLN 170.96
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 1K0907115J-1
Volkswagen Golf Mk5 1K V 2.0 TFSI BWA 200HP Engine Unit ECU 1K0907115J Automatic
PLN 807.95
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. JK2T15K868AB
Ford Transit Custom Rear Bumper PDC Cables Wiring Loom Harness JK2T-15K868-AB
Promo price
PLN 142.95
PLN 100.07
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 6857701
BMW 1 2 3 F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6857701
Promo price
PLN 75.95
PLN 72.15
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A2225403150
Fuse Box Mercedes W205 Front Passenger Side Footwell Fuse Box A2225403150
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
Part no. 2225618
Ford Transit Custom Mk1 Engine Starter Motor 2.0 EcoBlue GK2T-11000-AB
PLN 265.95
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 191906383C
Audi VW Volkswagen Seat Relay Unit Module 4 Pins 191906383C
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 9162930-WB1
BMW E81 E82 E87 E90 E91 Parking Sensor PDC Ultrasonic Bluewater - 896 SET X2
Promo price
PLN 94.95
PLN 85.46
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 8P3907357B
Audi S3 8P Xenon Headlight Range Control Module Unit ECU 8P3907357B
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. GTC055R
Mercedes W207 W212 Display Screen Android Navigation Infotainment Unit GTC055R
Promo price
PLN 1,139.95
PLN 797.97
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. A2054400534
Mercedes C205 Bumper PDC Wiring Loom Rear Parking Sensor A2054400534
Promo price
PLN 189.95
PLN 170.96
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 3D0937576
VW Volkswagen Phaeton 3D Main Fuse Socket Electrical Control Unit 3D0937576
PLN 42.95
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A2198200226
Door Module Mercedes C219 Rear Door Left N/S Control Module A2198200226
Promo price
PLN 47.95
PLN 45.55
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 9213373
Mini Cooper R57 Convertible Cabrio Petrol Fuse Box 9213373
Promo price
PLN 47.95
PLN 45.55
Delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. A1179008700
Mercedes GLA X156 Air Module Safety Belt Tensioner Unit Control A1179008700
Promo price
PLN 379.95
PLN 265.97
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 9121903
BMW E81 E87 E91 Switch Cluster Steering Column Cruise Control 9121903
Promo price
PLN 617.95
PLN 432.57
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. A2045451040
Mercedes W204 W212 Multimedia Interface Unit Module Bracket Mount A22045451040
Promo price
PLN 94.95
PLN 90.20
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 9226885
BMW F20 F21 Aerial Antenna Amplifier Diversity DAB 9226885
Promo price
PLN 85.95
PLN 77.36
Free delivery - Mon, Dec 22
If paid before 14:00
Part no. 0AH911023G
Audi Seat Skoda Volkswagen 1.2 TSI Petrol Starter Motor 0AH911023G
PLN 189.95
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 9811260
BMW Mini Cooper R60 Wiring Passenger Loom Front Door Cables Left N/S 9811260
Promo price
PLN 47.95
PLN 45.55
Delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 9292655
BMW F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM ECU LR01 9292655
Promo price
PLN 474.95
PLN 332.47
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 7641649
BMW F10 F20 F30 N20 125i 328i 528i N20 Wiring Harness Engine Module 1 7641649
Promo price
PLN 237.95
PLN 214.16
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. 8506666-5
Mini One R56 LCI 90HP N47N Diesel Engine ECU Control Unit DDE 8506666 Manual
Promo price
PLN 427.95
PLN 299.57
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 6957759
BMW E60 E61 E63 Driver Side Door Air Module Control Unit Module 6957759
Promo price
PLN 85.95
PLN 81.65
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. A0024463140-4
Mercedes W169 A160 CDI 95HP M266.920 Engine ECU Kit A0024463140 Automatic
Promo price
PLN 949.95
PLN 664.97
Free delivery - Mon, Dec 22
If paid before 14:00
-10%
Part no. 8593105
BMW G30 G11 G14 Diesel B57 Wiring Glow Plugs Module Wiring Harness 8593105
Promo price
PLN 142.95
PLN 128.66
Free delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. A2059009643
Mercedes W205 Telematics Bluetooth Module Control Unit ECU A2059009643
Promo price
PLN 189.95
PLN 132.97
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 3413934-2
BMW X3 E83 Rear Bumper Wiring Loom PDC Harness 1452049
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 9210861
BMW F10 F11 Power Distribution Fuse Box Front 9210861 61149210861
Promo price
PLN 66.95
PLN 63.60
Free delivery - Mon, Dec 22
If paid before 14:00
-5%
Part no. 6938664
BMW E65 E66 Control Unit Front Centre Console Module 6938664
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 22
If paid before 14:00
-30%
Part no. A6401508334-1
Engine Control Unit Mercedes W245 B200 CDI OM640.941 140HP ECU A6401508334
Promo price
PLN 123.95
PLN 86.77
Free delivery - Mon, Dec 22
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 .