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
-10%
Part no. 9643218980
Peugeot 206 1.6 NFU TU5JP4 109HP Engine Control Unit ECU 9643218980 Manual
Promo price
PLN 142.95
PLN 128.66
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9337881
BMW 1 3 4 F20 F21 F30 F31 F32 Power Distribution Fuse Box Rear 9337881
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
Part no. 9286156
BMW X3 F25 Footwell Light Module Control Unit ECU FRM3 9286156
PLN 61.95
Free delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. A2139065706-1
Fuse Box Mercedes W205 W213 Front Engine Compatment Relay Module A2139065706
Promo price
PLN 142.95
PLN 100.07
Free delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. A6519007500-13
Mercedes W212 E250 CDI 651.924 204HP Engine Unit ECU Kit A6519007500 Key Lock
Promo price
PLN 1,139.95
PLN 797.97
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 9230046
BMW 1 2 SERIES F20 F20N F21 F22 UNDER CAR POSITIVE BATTERY LEAD CABLE 9230046
Promo price
PLN 150.95
PLN 135.86
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 6956744
BMW 1 3 Series E81 E82 E87 E88 E90 E91 Ultrasonic Sensor PDC Sydney Blue 6956744
Promo price
PLN 27.95
PLN 26.55
Delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. 9313614
BMW F30 F31 F80 M3 Driver's Side Door Wiring Loom Cable 9313614
Promo price
PLN 208.95
PLN 146.27
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 6826326
BMW F40 G05 G20 G30 Shark Roof Fin Antenna Aerial Module Unit 6826326
Promo price
PLN 189.95
PLN 170.96
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 4G0035223C
Audi A6 C7 Audio Sound System Amplifier Bose 4G0035223C
Promo price
PLN 189.95
PLN 170.96
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A6394405209
Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6394405209
Promo price
PLN 47.95
PLN 45.55
Delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 9177118
CD Changer BMW X5 E70 X6 E71 Mini R55 R56 R57 6 Disc Changer Unit 9177118
Promo price
PLN 161.95
PLN 145.76
Free delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. 8K0907551
Audi A4 S4 B8 3.0 TFSI 333HP CAKA Quattro Engine Control Unit ECU 8K0907551
Promo price
PLN 759.95
PLN 531.97
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 7807802-1
BMW X5 E70 LCI X6 E71 N57 N57S Cable Alternator Starter Base B Wiring 7807802
Promo price
PLN 85.95
PLN 81.65
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 8X0959792F
Audi A1 8X Front Door Control Module Unit Passenger Side 8X0959792F
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. A9075401205
Mercedes W907 Starter Wiring Battery Alternator Cable Harness Loom A9075401205
Promo price
PLN 113.95
PLN 102.56
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9806332
Mini R60 R61 Ultra Sonic Module Alarm System Sensor 9806332
Promo price
PLN 61.95
PLN 58.85
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9339825
BMW G11 G30 G31 Power Supply Module High Voltage Battery Terminal Point 9339825
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 6C1T14A481CC
Ford Transit Mk7 Fuse Box Body Control Module ECU 6C1T14A481CC
Promo price
PLN 284.95
PLN 256.46
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9279823
BMW F30 REM Rear Electronic Module Fuse Box Control 9279823
Promo price
PLN 61.95
PLN 58.85
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A1698208526
Mercedes-Benz A B Class W169 W245 Door Control Module Left Rear N/S A1698208526
Promo price
PLN 47.95
PLN 45.55
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9664016980
Citroen C4 Starter Motor Diesel Engine HDI Actuator Unit 9664016980
Promo price
PLN 61.95
PLN 58.85
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A0009821923-1
Mercedes W205 Interior Trunk Fuse Box Automotive Pink Relays Set A0009821923
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 7525696
BMW X5 E53 Ground Battery Cable Alternator Starter 7525696
Promo price
PLN 66.95
PLN 63.60
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A9079053907
Mercedes Sprinter W907 W910 Battery Sensor Cable Negative Terminal A9079053907
Promo price
PLN 75.95
PLN 72.15
Free delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. A2218705687
Mercedes W221 Linguatronic Control Module Unit ECU English Version A2218705687
Promo price
PLN 360.95
PLN 252.67
Free delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. 8506444-3
BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8506444 CAS3 + Key
Promo price
PLN 1,044.95
PLN 731.47
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. A1775401910
Mercedes W177 Door Wiring Rear Door Left N/S Module Harness Cables A1775401910
Promo price
PLN 113.95
PLN 102.56
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 6929556
BMW E65 E66 Driver's Seat Air Module Sensor Control Unit Module 6929556
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 8S0820047
Audi TT FV 8S A/C Air Condition Climate Control Module Unit ECU 8S0820047
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. A2701504400
Mercedes W176 M270 Petrol Engine Wiring Harness Loom Cable A2701504400
Promo price
PLN 807.95
PLN 565.57
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 1K0907530G
Audi A3 8P Gateway Module Diagnostic Interface Control Unit ECU 1K0907530G
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 7533283
BMW X3 Z4 Series E83 LCI E85 E86 Cover Top Power Distribution Fuse Box 7533283
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
Part no. A2229063701
Fuse Box Mercedes W205 W222 Electrical Relay Box Module Unit A2229063701
PLN 75.95
Free delivery - Wed, Oct 08
If paid before 14:00
Part no. A2118275542
Mercedes W169 W211 6 Disc CD Changer Player Glove Box A2118275542
PLN 94.95
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 3412574
BMW X3 Series E83 Rear Left Right Door N/O/S Wiring Loom Cables 3412574
Promo price
PLN 37.95
PLN 36.05
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9258350
Air Module BMW F20 F21 F22 F30 F31 F32 Control Unit ECU 9258350
Promo price
PLN 61.95
PLN 58.85
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. A1695402733
Mercedes W169 W245 Cable Loom Wiring Parking Sensors Rear A1695402733
Promo price
PLN 113.95
PLN 102.56
Free delivery - Wed, Oct 08
If paid before 14:00
Part no. A2049012704
Mercedes W204 ECU Control Unit Crash Impact Sensor Air Module A2049012704
PLN 42.95
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A9068204126
Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9068204126
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 6751504
Module Holder BMW X5 E53 Rear Tyre Pressure Control Module Mount Bracket 6751504
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
Part no. 9240530
BMW E90 LCI Footwell Light Control Module LCM LED Basis 9240530
PLN 284.95
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 8N8035223A
Audi TT 8N Amplifier BOSE Premium Audio Sound System Module 8N8035223A
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 7823314
Mini Cooper R55 R56 R57 LCI N47N 1.6 Diesel Engine Starter Motor 7823314
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 7790368
Mini Cooper One D R50 W17 Diesel Alternator Cable Starter Base B 7790368
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 6929345
BMW 1 3 Series E82 E90 E92 Roof Antenna Aerial Shark Fin GPS Radio Tel 6929345
Promo price
PLN 28.95
PLN 27.50
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9191408
BMW X1 Series E84 Wiring Cable Loom Set Rear Door Left Right N/O/S 9191408
Promo price
PLN 56.95
PLN 54.10
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2025402373-1
Mercedes A C E Class 1 W169 W203 W211 OBD Diagnostic Plug Cover A2025402373
Promo price
PLN 47.95
PLN 45.55
Delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 7410612
BMW F34 GT Tailgate Lift Module Rear Boot Trunk Lid Control Unit ECU F005V01708
Promo price
PLN 170.95
PLN 153.86
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2048701126
Mercedes S204 Door Module Rear Left N/S Control Unit ECU A2048701126
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. A9079051202
Mercedes Sprinter W907 Battery Wire Negative Lead Cable A9079051202
Promo price
PLN 189.95
PLN 170.96
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2078201989
Mercedes-Benz W207 A207 Radio Aerial Antenna Amplifier Module Unit A2078201989
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 9187625
Bluetooth Module BMW E87 LCI E90 Hands Free High MULF2 9187625
Promo price
PLN 142.95
PLN 128.66
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2129004206
Door Module Mercedes W212 E-Class Rear Right O/S Control Unit A2129004206
Promo price
PLN 37.95
PLN 36.05
Delivery - Wed, Oct 08
If paid before 14:00
Part no. 237104376R
Mercedes Citan W415 109 CDI OM607.951 Engine Control Unit ECU 237104376R Manual
PLN 142.95
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2105460141
Mercedes-Benz E-Class W210 Battery Cable Box Connector Petrol A2105460141
Promo price
PLN 27.95
PLN 26.55
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2035409213
Mercedes W203 Door Wiring Harness Front Left Right N/O/S Wiring Loom A2035409213
Promo price
PLN 70.95
PLN 67.40
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 1K0907655D
VW Touran 1T Yaw Sensor ESP Rotation Rate Control Unit Module 1K0907655D
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A1779001604
Mercedes W177 W247 Door Module Front Right Control Unit A1779001604
Promo price
PLN 47.95
PLN 45.55
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 5Q0971250T
Volkswagen Golf Mk7 Seat Leon 5F Battery Wire Negative Earth Lead 5Q0971250T
Promo price
PLN 85.95
PLN 81.65
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. A1779005104
Mercedes W177 Ambient Lighting Control Module Unit ECU A1779005104
Promo price
PLN 161.95
PLN 145.76
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2119820402
Mercedes CLS W219 Battery Fuse Box Control Unit Module A2119820402
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. A2518703390
Mercedes W251 Rear Passengers Entertainment Control Unit A2518703390
Promo price
PLN 331.95
PLN 232.37
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. A6071550335
Alternator Belt Tensioner Mercedes W176 OM607 Diesel Holder Mounting Panel
Promo price
PLN 113.95
PLN 102.56
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 5Q0907530P
Audi A3 8V Gateway Control Module Unit ECU 5Q0907530P
Promo price
PLN 61.95
PLN 58.85
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2205401124-1
Fuse Box Unit Mercedes CL S C215 W220 1 Front Right O/S ECU A2205401124
Promo price
PLN 61.95
PLN 58.85
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9356156
External Ignition Base BMW F20 F30 F32 F33 Power Terminal Distribution 9356156
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. A4159007503
Mercedes Citan W415 Body Control Module Unit BCM ECU A4159007503 284B18276R
Promo price
PLN 664.95
PLN 465.47
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 9244426
BMW X5 E70 Rear Bumper PDC Cables Wiring Loom Set 9219647
Promo price
PLN 218.95
PLN 197.06
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9319918
Adapter Lead Wire BMW F45 F46 X1 F48 Cable Active Air Flap Control 9319918
Promo price
PLN 61.95
PLN 58.85
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2059000828
Door Module Mercedes GLC X253 Rear Door Left Control Module A2059000828
Promo price
PLN 66.95
PLN 63.60
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2129006318
Door Module Mercedes W204 W212 Front Left N/S Control Unit Module A2129006318
Promo price
PLN 47.95
PLN 45.55
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 8648843
BMW F45 Mini F60 B38X High Voltage Accumulator Negative Ground Cable 8648843
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 8K0959793Q
Audi A4 B8 Door Module Control Unit ECU Front Driver's Side 8K0959793Q
Promo price
PLN 75.95
PLN 72.15
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 9259468
BMW X3 F25 Fuse Box Power Distribution Control Unit Box Rear 9259468
Promo price
PLN 113.95
PLN 102.56
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 7823973-1
BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 7823973 CAS3 + Key
Promo price
PLN 807.95
PLN 727.16
Free delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. 9197177-1
BMW 1 Series E88 Cabrio Footwell Light Module Control Unit ECU NSW 9197177
Promo price
PLN 170.95
PLN 119.67
Free delivery - Wed, Oct 08
If paid before 14:00
Part no. BK2T14B476BU
Ford Transit MK8 Fuse Box Relay Body Control Comfort Module BCM BK2T14B476BU
PLN 617.95
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 7615308
BMW F20 F21 F30 Petrol N13 Wiring Loom Harness Engine Gearbox Manual 7615308
Promo price
PLN 85.95
PLN 81.65
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2469008115
Mercedes W176 W246 Gearbox Transfer Case Control Module Unit ECU A2469008115
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 7857551
Battery Cable BMW F80 M3 F82 M4 Wire Lead Positive Alternator Starter B+ 7857551
Promo price
PLN 237.95
PLN 226.05
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9343304
BMW X5 F15 X4 F26 Antenna Aerial Diversity Trap Circuit Control Module 9343304
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 8X0907159C
Audi A1 8X Impact Sound Actuator Control Module 8X0907159C
Promo price
PLN 189.95
PLN 170.96
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2058201201
Sunroof Wiring Mercedes C205 C238 Panoramic Motor Cable Harness A2058201201
Promo price
PLN 75.95
PLN 72.15
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 6915063
Ultra Sonic Module Mini R50 R53 Alarm System Sensor 6915063
Promo price
PLN 42.95
PLN 40.80
Delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. A2139001722
Mercedes W213 W907 Transmission Gearbox Control Unit Module ECU A2139001722
Promo price
PLN 142.95
PLN 128.66
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. A2465401850
Prefuse Box Mercedes W176 OM607 Fuse Relay Control Unit A2465401850
Promo price
PLN 142.95
PLN 128.66
Free delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. 9483099
Mini Cooper One F55 F56 F57 Parking Assistant Control Unit Module 9483099
Promo price
PLN 237.95
PLN 166.57
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. A2139000814
Mercedes W205 W213 C238 Tailgate Lift Boot Lid Control Unit Module A2139000814
Promo price
PLN 142.95
PLN 128.66
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 8671504-1
Starter BMW G20 G21 G30 G32GT G01 G05 Starter Motor Valeo 8671504
Promo price
PLN 237.95
PLN 214.16
Free delivery - Wed, Oct 08
If paid before 14:00
-30%
Part no. A0009004434-1
Parking Control Module Mercedes C118 W177 W247 PDC Bluetooth Unit A0009004434
Promo price
PLN 664.95
PLN 465.47
Free delivery - Wed, Oct 08
If paid before 14:00
Part no. A0009820012
Mercedes W176 W212 W246 Voltage Converter Power Distributor Inverter
PLN 47.95
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 9316655
Seat Wiring BMW X3 F25 X4 F26 Driver's Side Loom Cable 9316654
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 0390203255
Seat Adjustment Motor Mercedes W221 Front Seat Motor Actuator 0390203255
Promo price
PLN 56.95
PLN 54.10
Delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 5E5035577B
Skoda Octavia 5E Antenna Amplifier Aerial Control Module Unit 5E5035577B
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. 8589158
Battery Cable BMW G01 G02 B47B B47D Alternator Base B+ Lead 8589158
Promo price
PLN 94.95
PLN 90.20
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2118701185
Air Module Mercedes W211 W219 Control Unit ECU A2118701185
Promo price
PLN 85.95
PLN 81.65
Free delivery - Wed, Oct 08
If paid before 14:00
-5%
Part no. A2059001811
Mercedes W205 Rear Door Control Module Unit Left N/S ECU A2059001811
Promo price
PLN 61.95
PLN 58.85
Free delivery - Wed, Oct 08
If paid before 14:00
-10%
Part no. 8507908
BMW F20 Gearbox Transmission Harness Wiring Loom Manual 8507908
Promo price
PLN 284.95
PLN 256.46
Free delivery - Wed, Oct 08
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 .