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
-30%
Part no. 4L2035670J
Audi Q7 4L Head Unit Radio Player Navigation Control Module Alpine 4L2035670J
Promo price
PLN 1,899.95
PLN 1,329.97
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. P0396890
BMW 1 Series E82 Rear Bumper PDC Cables Wiring Loom Set 0396890
Promo price
PLN 189.95
PLN 132.97
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. A1648209385
Mercedes ML W164 Door Module Front Left N/S Control Unit Module A1648209385
PLN 142.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 9322122-2
Display Screen BMW F20 F21 F22 Central Information Sat Nav Monitor 6,5" 9322122
Promo price
PLN 142.95
PLN 128.66
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 9364636
Body Domain Controller Mini F54 F55 F56 F60 ECU BDC Control Unit Module 9364636
Promo price
PLN 712.95
PLN 641.66
Free delivery - Fri, Dec 19
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 - Fri, Dec 19
If paid before 14:00
-10%
Part no. 9365837
BMW F20 F21 F22 F30 F31 Head Unit Basic Media Headunit 9365837
Promo price
PLN 664.95
PLN 598.46
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 9230944
Control Unit BMW F01 F02 F07 F10 F11 CAS4 Key Reading Module 9230944
Promo price
PLN 189.95
PLN 132.97
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 9240945
Mini Cooper D R55 R56 R57 R60 LCI Electrical System Fuse Distribution Box
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 9216459
BMW 1 3 5 E60 E81 E87 E90 E91 Mini R55 R56 DAB Radio Tuner Module 9216459
Promo price
PLN 142.95
PLN 100.07
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 9315151
BMW X3 F25 Fuse Box Power Distribution Control Unit Box Rear 9315151
Promo price
PLN 94.95
PLN 90.20
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8507202
BMW E90 E91 LCI 318d N47N 143HP ECU Engine Control Unit DDE 8507202 Manual
Promo price
PLN 284.95
PLN 199.47
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 7L0907719A
Volkswagen Touareg Anti Theft Alarm System Control Module Unit ECU 7L0907719A
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
Part no. 8K0937501
Audi A4 B8 A5 8T A6 C7 Q5 8R Fuse Box Relay Module Connector Plug 8K0937501
PLN 94.95
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8510829-7
BMW E90 E91 LCI N47N 320d 184HP ECU KIT DDE 8510829 + CAS3 + Key Automatic
Promo price
PLN 758.95
PLN 531.27
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8606445
Wiring Harness BMW F20 F21 F30 LCI Motor Sensor System Module 1 8606445
Promo price
PLN 104.95
PLN 73.47
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 8644376
BMW G20 G30 F40 F45 Mini F54 F56 F60 Crankshaft Position Sensor 8644376
Promo price
PLN 47.95
PLN 45.55
Delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. A2229008911
Tuner Box Mercedes W213 W205 W222 Digital Audio Control Unit DAB ECE A2229008911
Promo price
PLN 218.95
PLN 153.27
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 6824110
BMW 3 F30 LCI 330e Hybrid High Voltage Battery Wiring Loom Harness 6821420
Promo price
PLN 284.95
PLN 256.46
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A9069000401
Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9069000401
Promo price
PLN 47.95
PLN 45.55
Delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 6871062
BMW F01 F07 F10 F12 VDC Module Rear Suspension Level Control Unit 6871062
Promo price
PLN 142.95
PLN 100.07
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 8589158
Battery Cable BMW G01 G02 B47B B47D Alternator Base B+ Lead 8589158
Promo price
PLN 94.95
PLN 85.46
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 06K907425B-15
Audi S3 8V 2.0 TFSI DJHA 310HP Quattro Engine Unit ECU Kit 06K907425B Automatic
PLN 1,519.95
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 8J0971237A
Audi TT 8J Starter Motor Negative Battery Wiring Harness Cable 8J0971237A
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. rhd-A1185407902
Mercedes C118 Front Door Left Right N/O/S Electrical Wiring Harness A1185407902
Promo price
PLN 113.95
PLN 102.56
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 9134668
Seat Control Unit BMW E90 E91 E92 Seat Module Unit Controller ECU 9134668
Promo price
PLN 218.95
PLN 153.27
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A4475406777
Alternator Wire Mercedes Vito W447 Battery Alternator Cable A4475406777
Promo price
PLN 94.95
PLN 85.46
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 4H0907801F
Audi A6 C7 Parking Brake Handbrake Module Control Unit 4H0907801F
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A2074401208
Mercedes W207 Parking Sensor Wiring Loom Cable Harness Rear PDC
Promo price
PLN 104.95
PLN 94.46
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 4M0907247
Audi A4 B9 A5 F5 Keyless Entry Amplifier Control Box Module Antenna 4M0907247
Promo price
PLN 94.95
PLN 90.20
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 7634063
Gearbox Wiring BMW F10 F11 520i 528i N20 Automatic Engine Loom Harness 7634063
Promo price
PLN 474.95
PLN 427.46
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A0009001017
Mercedes S205 W205 Air Conditioning Control Module A/C ECU Unit A0009001017
Promo price
PLN 142.95
PLN 128.66
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8654977
BMW X5 F15 N20 Petrol Sensor System Engine Wiring Harness Cable Loom 8654977
Promo price
PLN 712.95
PLN 499.07
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A1175401205
Mercedes C117 Drivers Door Wiring Harness A1175401205
Promo price
PLN 61.95
PLN 55.76
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 1K0971120CH
Volkswagen Golf 1K Door Wiring Harness Loom Cable Front Drivers Side 1K0971120CH
PLN 123.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 9315685
BMW 1 2 3 4 Series F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9315685
Promo price
PLN 170.95
PLN 153.86
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. A2049009907-2
Mercedes W204 Navigation Radio Player Head Unit Computer A2049009907
Promo price
PLN 664.95
PLN 465.47
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6902285
BMW E39 E87 E90 E91 Trigger Contact PDC Sensor Tweeter Gong 6902285
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 9257093
Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9257093
Promo price
PLN 1,423.95
PLN 1,281.56
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 5G0919605
VW Volkswagen Golf Mk7 Radio Control Head Unit CD Player 5G0919605
PLN 237.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 9389286
Door Wiring Mini Clubman F54 Front Passanger Side N/S Door Harness 9389286
Promo price
PLN 142.95
PLN 128.66
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 9267511
BMW X5 E70 Body Control Module Main Primary ECU Unit JBBFEIII R LP 9267511
Promo price
PLN 664.95
PLN 465.47
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. A1779007716
Mercedes W177 Front Door Control Module Left Right N/O/S Unit ECU A1779007716
Promo price
PLN 265.95
PLN 186.17
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 9279391
BMW 5 G11 G30 M5 Door Crash Sensor Front 9279391
Promo price
PLN 66.95
PLN 63.60
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 7928682
Radio Receiver BMW F40 F44 G20 G26 Radio Remote Control Unit 434 MHZ 7928682
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 8585641
Engine Wiring BMW F20 F21 F30 F31 N47N Diesel Loom Harness Cable 8585641
Promo price
PLN 142.95
PLN 128.66
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 5A41CA2
Air Module BMW F45 F46 Mini F55 F56 F60 ECU Control Unit 5A41CA2
Promo price
PLN 949.95
PLN 854.96
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 2Q0980653H
Seat Ibiza KJ1 VW Polo MK6 Front Camera Lane Assist Control Unit 2Q0980653H
PLN 284.95
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. A0009000716
Mercedes Vito W447 Diesel Adblue Module Control Unit ECU A0009000716
Promo price
PLN 427.95
PLN 299.57
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 4F0907280A
Audi A6 C6 On Board Onboard Supply Module Control Unit ECU 4F0907280A
Promo price
PLN 66.95
PLN 63.60
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. A9075402605
Mercedes W907 Fuse Box Control Unit Module Q2 A9075402605
Promo price
PLN 284.95
PLN 199.47
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A1685405008
Mercedes A-Class W168 Door Cable Harness Wiring Loom Front Right A1685405008
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 8P0035535
Audi A4 B7 Amplifier Bracket Aerial Antenna Module Mount Holder 8P0035535
Promo price
PLN 47.95
PLN 45.55
Delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8577839-1
BMW F32 F33 430d N57N 258HP Engine ECU DDE Kit 8577839 FEM + Key Automatic
Promo price
PLN 949.95
PLN 664.97
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A2465406607
Positive Cable Mercedes W176 W246 Battery Lead Plus Pole Red A2465406607
Promo price
PLN 66.95
PLN 60.26
Free delivery - Fri, Dec 19
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 - Fri, Dec 19
If paid before 14:00
Part no. 4H0962239A
Audi A8 D4 Rear Hatch Boot Lid Tailgate Opening Cable Wiring Line 4H0962239A
PLN 189.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A2711500420
Mercedes W204 M271 Solenoid SOLV Valve Wiring Harness Petrol A2711500420
Promo price
PLN 113.95
PLN 102.56
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 7527610-4
Mini Cooper S R53 W11 170HP Engine Control Unit ECU Kit DME 7527610 Manual
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A2218200210
Mercedes W221 Seat Occupancy Mat Control Unit Sensor A2218200210
Promo price
PLN 142.95
PLN 128.66
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 8N0906018CB
Audi TT 8N 1.8T BAM 224HP Quattro Engine Control Unit ECU 8N0906018CB Manual
PLN 607.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. A2475402228
Mercedes W177 Recirculation Pump Wiring Loom Cable Harness A2475402228
PLN 180.95
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. A1669005612
Door Module Mercedes ML W166 Rear Right O/S Door Control Unit A1669005612
Promo price
PLN 61.95
PLN 43.37
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6952477
BMW 5 Series E60 E61 Centre Console Switch Centre DTC PDC 6952477
Promo price
PLN 85.95
PLN 81.65
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 7804127
BMW E60 E61 LCI 520d Cable Alternator Starter Base B 7804127
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
Part no. 141951253B-3
Audi VW Volkswagen Seat Relay Number 53 Unit Module 4 Pins Set Of 2 141951253B
PLN 42.95
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 8369504
BMW 5 E39 Saloon Radio Signal Antenna Amplifier Coaxial Cable 8369504
Promo price
PLN 65.95
PLN 62.65
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8512415-7
Mini Cooper SD R60 ALL4 N47N 143HP Engine ECU Kit DDE 8512415 CAS3 Key Manual
Promo price
PLN 949.95
PLN 664.97
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 9337205
BMW F32 Door Wiring Front Door Right Loom Cable Wiring Harness 9337205
PLN 94.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 9387266
FEM Module BMW F23 F36 Body Control Unit ECU LR01 9387266
Promo price
PLN 569.95
PLN 512.96
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 9364552
Seat Wiring BMW F45 X1 F48 Mini F55 F56 Passenger's Side Sensor Cable 9364552
Promo price
PLN 94.95
PLN 90.20
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A2129014606-1
Mercedes W212 Display Screen Information Navigation Dashboard A2129014606
Promo price
PLN 332.95
PLN 299.66
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8678974
Engine Cable BMW F40 X1 F48 Mini F55 F56 Injector Wiring Loom Harness 8678974
Promo price
PLN 170.95
PLN 119.67
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6914396
Mini Cooper R50 R52 R53 Support Bracket Navigation Computer 6914396
Promo price
PLN 75.95
PLN 72.15
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 9259831
BMW E93 Convertible Wiring Loom Front Door Cables Cable Passenger Side 9186668
Promo price
PLN 94.95
PLN 90.20
Free delivery - Fri, Dec 19
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 - Fri, Dec 19
If paid before 14:00
-10%
Part no. 4F0919813E
Audi A4 B8 Chip Card Reader for Road Toll ETC Japan Module Unit 4F0919813E
Promo price
PLN 113.95
PLN 102.56
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A1638201126
Mercedes ML W163 Windscreen Rain Light Sensor Control Module A1638201126
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A2059004013
Mercedes W205 Air Conditioning Control Module A/C ECU Unit A2059004013
Promo price
PLN 94.95
PLN 90.20
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 9350003-1
Safety Control Unit BMW F01 LCI F07 F10 F11 F25 Air Module Bag ECU 9350003
Promo price
PLN 94.95
PLN 90.20
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A2049003509
Mercedes W204 S204 Radio Head Unit Sat Nav CD Player 2049003509
Promo price
PLN 189.95
PLN 170.96
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 9166897
Audio Amplifier HiFi BMW E87 E90 Top Sound System Control Unit 9177752
PLN 1,899.95
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 5A234D0
Wiring Cable BMW F06 F12 F13 Electric Parking Hand Brake Handbrake Cable 5A234D0
Promo price
PLN 142.95
PLN 100.07
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A1636801080
Mercedes ML W163 Cover Footwell Fuse Box Trim Right A1636801080
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 1S0919275-PHB
Audi A3 8P PDC Parking Distance Control Sensor Module Unit ECU Phantom Black Z9Y
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 9261592
BMW F20 F21 F30 Ultrasonic Parking Sensor PDC Front Havanna Metallic - A17
PLN 108.95
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8579482
BMW F20 F21 116d ed Diesel N47N 116HP Engine Control ECU DDE 8579482 Manual
Promo price
PLN 332.95
PLN 233.07
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 6867169
Air Module BMW F20 F23 F30 F32 F36 Domain Control Module ICM Unit 6867169
Promo price
PLN 118.95
PLN 107.06
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 6953424-2
BMW Z4 Series 2 E85 E86 Positive Battery Cable Plus Pole Lead 6953424
Promo price
PLN 161.95
PLN 145.76
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A2129009128
Door Module Mercedes W207 W212 CLS W218 Front Left N/S Control Unit A2129009128
Promo price
PLN 75.95
PLN 72.15
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 9118111
BMW 1 Series E81 E82 Door Wiring Loom Harness 9118111
Promo price
PLN 56.95
PLN 54.10
Delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 8K0971687S
Audi A4 B8 Door Wiring Harness Loom Rear Left N/S Cabling 8K0971687S
Promo price
PLN 75.95
PLN 68.36
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8610635-3
BMW F20 F30 F31 120i 320i N20 184HP Engine Control Unit ECU DME 8610635 Manual
Promo price
PLN 949.95
PLN 664.97
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 9201980
BMW F01 F02 F07 F10 F11 F12 F13 G11 LCI Battery Power Dividing Element 9201980
PLN 332.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 4H0971142C
Audi A8 D4 Door Card Wiring Loom Cable Harness Rear Right O/S 4H0971142C
PLN 94.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A9065400341
Battery Cable Mercedes Sprinter W906 Negative Lead Wiring Harness A9065400341
Promo price
PLN 51.95
PLN 46.76
Delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. A1779069601
Mercedes W177 W247 Fuse Box Front Relay Engine Control Unit Module A1779069601
Promo price
PLN 189.95
PLN 132.97
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A1729001906
Mercedes X218 CLS350 Communication Bluetooth Control Module A1729001906
Promo price
PLN 47.95
PLN 43.16
Delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8516739
Mini One D R56 LCI R60 90HP N47N Engine Control Unit ECU DDE 8516739 Manual
Promo price
PLN 474.95
PLN 332.47
Free delivery - Fri, Dec 19
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 .