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. 9340522
BMW 5 F10 LCI Central Gateway Module ECU Control Unit LEAR ZGW-02 4SK 9340522
Promo price
PLN 237.95
PLN 166.57
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A0009009114
Mercedes W205 Air Conditioning Climate Control Module ECU A0009009114
Promo price
PLN 104.95
PLN 94.46
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6920478
BMW 7 Series E65 E66 E67 Sensor Front Right Door Airbag 65776920478 6920478
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 7852630
Differential Lock Module BMW F10 M5 F80 M3 Rear Axle Control Unit ECU 7852630
Promo price
PLN 237.95
PLN 166.57
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 8K9035382B-1
Audi RS4 B8 Boot Trunk Speaker Spare Wheel Holder Audio Kicker 8K9035382B
PLN 332.95
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 4G8959795A
Audi A7 4G8 Door Control Module Electrical Unit ECU Rear Right O/S 4G8959795A
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 7634056
Engine Wiring BMW F20 F21 F30 F31 N20 Cable Loom Harness 7634056
Promo price
PLN 94.95
PLN 85.46
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 4L0919614B
Audi Q7 4L Navigation Multimedia Control Panel Knob Unit 4L0919614B
Promo price
PLN 2,089.95
PLN 1,462.97
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A2075405205
Mercedes W207 Door Cable Wiring Loom Front Left Right Door N/O/S A2075405205
Promo price
PLN 85.95
PLN 81.65
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 3452166
BMW X3 E83 Air Module Control Unit ECU 3452166
PLN 265.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 9347822
Head Unit BMW F10 F11 F20 F30 Navigation Sat Nav High Control Module 9347822
PLN 664.95
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 03F906070GN-2
Audi A1 8X 1.2 TFSI CBZA 86HP Engine Control ECU Kit 03F906070GN Manual
Promo price
PLN 664.95
PLN 465.47
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 9252549
BMW F12 Front Seat Control Unit Module Memory ECU 9252549
Promo price
PLN 237.95
PLN 214.16
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 5Q0971250P
Audi S3 8V Battery Wire Cable Negative Earth Lead 95Q0971250P
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6921857
BMW X5 E39 E46 E53 Motorola Hands-free Electronics Control Unit ECU 6921857
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A0009062822
Alternator Generator Mercedes W207 W212 W906 Engine Diesel 200A 14V LRA03818
Promo price
PLN 379.95
PLN 341.96
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6922528
BMW 5 Series E61 E61N LCI Holder Bracket Additional Battery 6922528
Promo price
PLN 28.95
PLN 27.50
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A0015453916
Mercedes CL 203 Automatic Gearbox Control Unit Module ECU A0015453916
Promo price
PLN 142.95
PLN 135.80
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 5TRK0200UK
BMW X5 E53 GPS Vehicle Location Tracker Control Unit Module ECU 5TRK0200UK
Promo price
PLN 47.95
PLN 45.55
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6933268
BMW 7 Series E65 E66 Control Unit Door Rear Passenger Side 6933268
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 9286640
Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9286640
Promo price
PLN 1,234.95
PLN 1,111.46
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 3G0962243C
Volkswagen Seat Skoda Audi Tailgate Module Controller 3G0962243C
PLN 142.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 8657232
Engine Wiring BMW F87 M2 N55 Petrol Loom Module Harness Cable 8657232
Promo price
PLN 664.95
PLN 598.46
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 5Q0959354A
VW Volkswagen Tiguan AX1 Front Air Module Crash Impact Sensor Unit 5Q0959354A
PLN 42.95
Delivery - Fri, Dec 19
If paid before 14:00
Part no. 4G5971030DJ
Audi A6 C7 Front Door Wiring Harness Loom Left N/S Passenger's Side 4G5971030DJ
PLN 94.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 6826790
BMW F10 F20 F22 F30 Navigation Sat Nav Head Unit High 9387565
PLN 569.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A0014460340
Mercedes W245 B150 CDI OM266.920 Engine Control Unit Module ECU A0014460340
Promo price
PLN 42.95
PLN 38.66
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 9154413
BMW E93 Convertible GPS Aerial Antenna Unit Module 9154413
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
-100%
Part no. A4479060400
Mercedes W447 Fuse Relay Box Module Control Unit A4479060400
Promo price
PLN 263.95
-PLN 0.04
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 913463601
Seat Module BMW E65 Front Seat Control Unit Module ECU 913463601
Promo price
PLN 142.95
PLN 128.66
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 6911908
On Board Monitor BMW X5 E70 X6 E71 Sat Nav System Screen Display 8,8" 6911908
Promo price
PLN 284.95
PLN 199.47
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A2229001909
Mercedes W205 W222 Door Module Front Right O/S Control Unit ECU A2229001909
Promo price
PLN 85.95
PLN 81.65
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 8U0971687B
Audi Q3 8U Rear Door Loom Wiring Harness Cable Left Right N/O/S 8U0971687B
PLN 94.95
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8510591
BMW E60 E87 E90 LCI 120d 320d 520d N47 Engine ECU DDE 8510591 Manual
Promo price
PLN 474.95
PLN 332.47
Free delivery - Fri, Dec 19
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 - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6855995
Control Unit Module BMW F20 F21 F22 F30 F31 ECU ICM Plus 6855995
Promo price
PLN 75.95
PLN 72.15
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 09G927750FD
VW Volkswagen Tiguan 5N Automatic Gearbox Module Control Unit ECU 09G927750FD
Promo price
PLN 189.95
PLN 132.97
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 6926445
BMW 5 Series E60 E61 LCI Heated Front Seat Control Module 6926445 9182128
Promo price
PLN 56.95
PLN 51.26
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 9315152
BMW X3 F25 Fuse Box Grouping Map Diagram Location 9315152
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 8518268-2
BMW E90 E91 LCI 318d Diesel 143HP N47N ECU Kit DDE 8518268 + CAS3 + Key Manual
Promo price
PLN 664.95
PLN 598.46
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6921309
BMW E65 E66 Centre Console Front Armrest Tray Cables Wiring Set 6921309
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A1715409245
Mercedes SLK R171 Gateway Control Unit Gateway Module ECU A1715409245
Promo price
PLN 75.95
PLN 68.36
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 9237085
BMW F10 F11 Cable Loom Door Passenger Side Wiring Harness 9240882
PLN 94.95
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 167859
BMW X5 Series E53 Widescreen Motorway and Trunk Road Unit Module 167859
Promo price
PLN 93.95
PLN 89.25
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 9367812
Active Sound Design Module BMW F20 F21 F30 Harman Becker Control Unit 9367812
Promo price
PLN 284.95
PLN 199.47
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6949228-1
2 x Mini Cooper R52 Convertible DWA Door Alarm System Module Unit Set 6949228
Promo price
PLN 47.95
PLN 45.55
Delivery - Fri, Dec 19
If paid before 14:00
Part no. 5G0035222A
Volkswagen Golf Mk7 Media In Port Socket Connection Adapter 5G0035222A 5Q0035736
PLN 42.95
Delivery - Fri, Dec 19
If paid before 14:00
Part no. 4F1971687S
Audi A6 C6 Rear Door Wiring Left Right N/O/S Harness Loom Cable 4F1971687S
PLN 42.95
Delivery - Fri, Dec 19
If paid before 14:00
Part no. ML3A-5L200-AD
Volkswagen Amarok Mk2 DPF Filter Pressure Sensor 3.0 TDI ML3A-5L200-AD
PLN 237.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 04E971612ES
Seat Ibiza 6J Engine Wiring Harness Loom Manual Gearbox 1.2 TSI CJZC 04E971612ES
PLN 180.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A9079051602
Mercedes W907 Aerial Antenna Amplifier Control Unit Module A9079051602
Promo price
PLN 142.95
PLN 128.66
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A2469060093
Fuse Box Mercedes W176 OM607 Front Relay Control Unit Module A2469060093
Promo price
PLN 94.95
PLN 90.20
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A0065454601
Energy Distributor Mercedes W204 OM656 Power Control Unit Module A0065454601
Promo price
PLN 189.95
PLN 170.96
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8577764-1
BMW F10 F11 520d Diesel N47N 184HP ECU Kit DDE 8577764 + Key + CAS4 Automatic
Promo price
PLN 1,168.95
PLN 818.27
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. A2049005015
Mercedes C204 W207 Suspension Damper Adjustment Control Unit Module A2049005015
Promo price
PLN 474.95
PLN 332.47
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. E92-PDC-WIRING-LOOM-HARNESS-REAR-BUMPER-1
BMW E92 LCI PDC Wiring Loom Harness Rear Bumper
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
Part no. 1H5951253
Volkswagen Touareg 7L Relay Alternator Alarm Black 4 Pin 12V No 143 1H5951253
PLN 42.95
Delivery - Fri, Dec 19
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 - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8635816
Engine Wiring BMW F20 F30 F31 LCI B38 Automatic Gearbox Loom Harness 8635816
Promo price
PLN 237.95
PLN 166.57
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 2T1T-14B321-AC
Ford Transit Connect Air Module Control Unit ECU 2T1T-14B321-AC
Promo price
PLN 94.95
PLN 90.20
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A2468201915
AUX Jack Port Mercedes C117 W246 W176 Wiring Loom Cable Harness A2468201915
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 4G0035056-1
Audi A4 B8 Sat Nav Multimedia DAB Radio Control Head Unit 4G0035056
PLN 949.95
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 5Q0971230AQ
Seat Leon 5F VW Golf Mk7 Alternator Wiring Harness Loom Cable 5Q0971230AQ
PLN 61.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 8512415-9
Mini One D R60 N47N 90HP Diesel Engine Control Module ECU DDE 8512415 Manual
Promo price
PLN 949.95
PLN 854.96
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 7L0915138C
Audi Q7 4L Battery Mounting Bracket Part Holder 7L0915138C
PLN 42.95
Delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 9298959
BMW F20 F21 F30 F31 Rear Electronic Module Fuse Box Control Unit V2 REM 9298959
Promo price
PLN 227.95
PLN 205.16
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A6549061600
Starter Motor Mercedes W205 W213 W238 W447 OM654 Engine Diesel A6549061600
Promo price
PLN 189.95
PLN 170.96
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 8736251
BMW X4M F98 X4 G02 X3 G01 Rear Fuse Box Power Distribution Fuse Box 8736251
Promo price
PLN 284.95
PLN 256.46
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 8616810
BMW 1 2 3 4 Series F20 F21 F22 F23 F30 F31 F32 Battery Cable Connecying Line
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A0025422619-2
Mercedes ML W163 Relay 4-Pin Grey Tyco Set Kit A0025422619
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A6395407809
Wiring Loom Mercedes W639 Vito Cable Sliding Door Rear Left N/S A6395407809
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 8516122
Battery Cable BMW X5 F15 X6 F16 Alternator Starter Wiring Loom Harness 8516122
Promo price
PLN 108.95
PLN 98.06
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. A1729003406
Mercedes SLK R172 Roadster Soft Top Folding Roof Control Module A1729003406
Promo price
PLN 141.95
PLN 99.37
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 8S0959121
Audi TT FV 8S Crash Impact Sensor Pedestrian Protection Module Front 8S0959121
PLN 237.95
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. 2G0971104C
Volkswagen Polo Mk6 PDC Sensor Wiring Loom Harness Cable Rear Bumper 2G0971104C
Promo price
PLN 180.95
PLN 162.86
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A0015467435
Battery Cover Mercedes W906 Battery Positive Pole Cover Red A0015467435
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A6261500075
Mercedes W205 Alternator Protective Cover Metal Sheet A6261500075
Promo price
PLN 47.95
PLN 45.55
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6958525-1
BMW 5 X5 X6 Series 1 E60 E61 E70 F07 F10 F11 Seat Adjustment Switch Left N/S
Promo price
PLN 47.95
PLN 45.55
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A2048706826
Mercedes W204 ECU Control Unit Sensor Module Airbag A2048706826
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A2229001912
Mercedes W205 C253 Door Module Rear Left N/S Control Unit ECU A2229001912
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 9289637
BMW F10 Rear Window Parcel Shelf Loudspeaker Speaker Left Right N/O/S 9289637
Promo price
PLN 47.95
PLN 45.55
Delivery - Fri, Dec 19
If paid before 14:00
Part no. 5Q0919294K
Audi RS3 8V PDC Parking Distance Control Sensor Module Unit ECU 5Q0919294K
PLN 113.95
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 6960000
BMW X5 Series E53 Front Bumper PDC Loom Cables Wiring Set 6960000
Promo price
PLN 237.95
PLN 166.57
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 9380322
BMW F01 F02 F03 F10 F11 F13 Central Gateway Control Lear Module Unit ECU 9380322
PLN 142.95
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A1695400606
Mercedes-Benz A W169 Parktronic Parking Sensor Wiring Cable Rear PDC A1695400606
Promo price
PLN 94.95
PLN 90.20
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A2049005908-2
Mercedes W204 Navigation CD Player COMAND Radio Sat Nav Head Unit A2049005908
Promo price
PLN 474.95
PLN 427.46
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6923215
BMW E46 Inclination Indicator Alarm Tilt Sensor Module 6923215
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8576333-1
BMW F10 F11 520d X3 F25 20dX N47N 184HP ECU Kit DDE 8576333 Key CAS4 Automatic
Promo price
PLN 902.95
PLN 632.07
Free delivery - Fri, Dec 19
If paid before 14:00
Part no. 231A07345R
Smart Fortwo C453 Central Door Locking Control Unit Module ECU 231A07345R
PLN 189.95
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 8377601
BMW E38 Door Windows Control Unit Module ECU ZB PMBT LOW 8377601
Promo price
PLN 85.95
PLN 81.65
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A2465400140
Mercedes-Benz A-Class W176 Equipment Electrical Cover Fuse Box A2465400140
Promo price
PLN 46.95
PLN 44.60
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. A0009004802
Air Module Mercedes W639 W906 ECU Control Unit Crash Impact A0009004802
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. E92-PDC-WIRING-LOOM-HARNESS-REAR-BUMPER-2
BMW E92 E92N LCI PDC Wiring Loom Harness Rear Bumper
Promo price
PLN 42.95
PLN 40.80
Delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8J0035223E
Audi TT 8J Coupe Roadster Ultrasonic Sound Control Module ECU Unit 8J0035223E
Promo price
PLN 151.95
PLN 106.37
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. 8574091
BMW F10 F11 520d N47N 184HP Engine Control Unit ECU DDE 8574091 Automatic
Promo price
PLN 284.95
PLN 199.47
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 8514291
Battery Cable BMW X3 F25 X4 F26 B47 Alternator Starter Base B Cable 8514291
Promo price
PLN 161.95
PLN 153.85
Free delivery - Fri, Dec 19
If paid before 14:00
-5%
Part no. 6943085
BMW E60 E61 Air Module ECU Control Unit Gateway Module 6943085
Promo price
PLN 61.95
PLN 58.85
Free delivery - Fri, Dec 19
If paid before 14:00
-10%
Part no. A0038206926
Mercedes W221 Door Control Module Unit ECU Rear Left N/S A0038206926
Promo price
PLN 189.95
PLN 170.96
Free delivery - Fri, Dec 19
If paid before 14:00
-30%
Part no. A9075400500
Mercedes W907 Battery Cable Wiring Loom Harness Cabling A9075400500
Promo price
PLN 113.95
PLN 79.77
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 .