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. A4155404305
Microphone Cable Mercedes Citan W415 Wiring Loom Cable Harness 27083202
Promo price
PLN 85.95
PLN 60.17
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9124112
BMW E81 E82 E87 E90 E91 E92 Mini Cooper R55 R56 R60 Rain Light Sensor 9124112
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2118703385
Mercedes W211 Door Module Rear Left N/S Control Unit ECU A2118703385
Promo price
PLN 66.95
PLN 63.60
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8T0959795J
Audi A5 8T Rear Door Module Control Unit Module ECU Left Right N/O/S 8T0959795J
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 7G92-14324-AE
Earth Ground Cable Land Rover Freelander 2 Line Strap Battery Lead 7G92-14324-AE
Promo price
PLN 56.95
PLN 54.10
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9145401
BMW 5 Series E60 E60N E61 E61N LCI Airbag ECU Control Unit Module
Promo price
PLN 23.95
PLN 22.75
Delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. A1665402102
Battery Cable Mercedes W166 C292 Starter Alternator Wiring Harness A1665402102
Promo price
PLN 142.95
PLN 100.07
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8579479-6
BMW F20 F21 F30 F31 116HP N47N Engine Control Unit ECU Kit DDE 8579479 Manual
PLN 1,139.95
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A6511504133
Mercedes W204 W212 Engine Wiring Diesel Harness Loom Cable E250 CDI A6511504633
Promo price
PLN 379.95
PLN 341.96
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2129001529
Mercedes-Benz C E Class W204 W207 W212 Front Left Door N/S Control Unit Module
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-10%
Part no. A2469052403
Mercedes W156 W176 Battery Cable Negative Lead Terminal Harness A2469052403
Promo price
PLN 75.95
PLN 68.36
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9374508
BMW F20 F21 F30 F31 REM Rear Electronic Module Fuse Box Control Unit V3 9374508
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. A2129060205
SAM Module Mercedes W207 A207 C207 Rear Control Unit ECU A2129060205
Promo price
PLN 427.95
PLN 299.57
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 3453954
Mini Cooper One R57 R58 Aerial Antenna Amplifier Diversity Module 3453954
Promo price
PLN 47.95
PLN 45.55
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A6519062300
Starter Motor Mercedes W204 W212 OM651 Diesel Engine Starter A6519062300
Promo price
PLN 94.95
PLN 85.46
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7H0937617
Volkswagen Transporter T5 T30 Fuse And Relay Box Wiring Cable 7H0937617
PLN 75.95
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 9298936
BMW F20 F21 F22 F30 F31 Alpine CD Champ 2 Radio Player Head Unit 9298936
Promo price
PLN 170.95
PLN 153.86
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 4F0907247A
Audi Q7 4L Keyless Entry Amplifier Control Box Module Aerial Antenna 4F0907247A
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 7M0951253C-1
VW Volkswagen T5 Audi Seat Skoda Relay Black Control Unit 5 Pin 12V 7M0951253C
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2129001929
Mercedes W176 Keyless Control Module Unit ECU A2129001929
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 7541084
Mini Cooper Cabrio R52 Battery Cable Plus Pole 7541084
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9206056-TS
BMW F07 GT Rear PDC Parking Distance Sensor Titan Silver - 354
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
Part no. A2188701489
Mercedes W218 Audio Amplifier Harman Kardon Subwoofer Control Unit A2188701489
PLN 237.95
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 9210135
BMW F07 GT Rear Door Wiring Loom Cable Harness 9210135
Promo price
PLN 123.95
PLN 111.56
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 3457050
Bluetooth Head Unit Mini Cooper R55 R56 R57 Radio Boost CD USB 3457050
Promo price
PLN 1,377.95
PLN 1,240.16
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 8719905
BMW X3 G01 X4 G02 Wireless Charger Centre Console Phone Module Unit 8719905
Promo price
PLN 142.95
PLN 128.66
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-30%
Part no. A2054404136
Mercedes W205 Battery Lead Wiring Loom Cable Hybrid Cable Harness A2054404136
Promo price
PLN 189.95
PLN 132.97
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-30%
Part no. 9257098
BMW F10 F11 F20 F21 F22 F30 F31 Front Seat Control Module ECU 9257098
Promo price
PLN 237.95
PLN 166.57
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2466200028
Mercedes W176 Battery Support Holder Bracket Mount A2466200028
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A2229007109
SAM Module Mercedes C205 GLC X253 Coupe Rear Control Unit A2229007109
Promo price
PLN 120.95
PLN 108.86
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 6946108
BMW 7 Series E65 E66 E67 Sensor Rear Seat Airbag 6946108
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 7631558
Engine Starter BMW F20 M135i F30 335i F32 435i F80 M3 F82 M4 Motor Start 7631558
Promo price
PLN 75.95
PLN 68.36
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 4H0907145
Audi A6 C7 Air Suspension Level Height Adjustment Module Control Unit 4H0907145
Promo price
PLN 379.95
PLN 341.96
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8J0035456
Audi S5 8T Antenna Amplifier Aerial Control Module Unit ECU 8J0035456
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 7621063
BMW X3 F25 X4 F26 Earth Ground Cable Line Strap Battery Lead 7621063
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
Part no. 3452166
BMW X3 E83 Air Module Control Unit ECU 3452166
PLN 265.95
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A9079821100
Mercedes W910 Engine Hood Microswitch Cable Wiring Loom Harness A9079821100
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A2059003222
Door Module Mercedes W205 W253 Control Unit Module Front Right O/S A2059003222
Promo price
PLN 94.95
PLN 85.46
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 04L907309R-4
Skoda Octavia III 5E 2.0 TDI 184HP CUNA Engine Control ECU Kit 04L907309R Manual
PLN 617.95
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. YC1A14B321CC
Ford Transit MK6 Restraints Control Module Air Module Unit YC1A14B321CC
Promo price
PLN 94.95
PLN 85.46
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 1439674
BMW X5 E53 Base B Positive Battery Terminal Cable Cover Compartment
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9338800
iDrive Control Unit BMW F10 F20 F30 Touch Controller Module ECU 9338800
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. P0148459-IB1
Mini Cooper One 1 R50 Fuel Filler Cover Fill In Flap Indi Blue Metallic 862
Promo price
PLN 37.95
PLN 36.05
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 141951253B
Audi VW Volkswagen Seat Relay Unit Module 4 Pins 141951253B
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
Part no. 6956744-1
BMW E81 E82 E87 E88 E90 E91 Parking Sensor PDC Sydneyblau - A19 6956744 SET X2
PLN 94.95
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. A2139009406
Mercedes W213 Display Screen Information Navigation Dashboard A2139009406
Promo price
PLN 332.95
PLN 233.07
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 4L0910289K
Audi Q7 4L Body Control Comfort Unit Module BCM Unit ECU 4L0907289K
Promo price
PLN 759.95
PLN 683.96
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 9337210
BMW 4 F33 F83 M4 Cabrio Front Door Driver's Side Wiring Loom Cables 9337212
PLN 112.95
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8X0959792D
Audi A1 8X Front Passenger Side Door Module Unit Control ECU 8X0959792D
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A2124404851
Mercedes W212 Rear Bumper PDC Wiring Parking Sensor Loom Harness A2124404851
Promo price
PLN 142.95
PLN 128.66
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4G8959793J
Audi A6 C7 Door Module Control Unit ECU Front Left N/S 4G8959793J
PLN 42.95
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A4475402105
Mercedes Vito W447 Battery Cable Starter Alternator Wiring Harness A4475402105
Promo price
PLN 132.95
PLN 119.66
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A2469000516
Radio CD Player Mercedes W176 W246 COMAND Nav Sat Head Unit A2469000516
Promo price
PLN 332.95
PLN 299.66
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4H0907383N
Porsche Macan 95B Trailer Detection Control Module Unit ECU 4H0907383N
PLN 902.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 9270020
BMW F06 F12 F13 Front Wiring Loom PDC Harness Parking Sensor 9270020
PLN 332.95
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9176958
BMW E81 E87 E90 E91 Mini R55 R56 DAB Radio Tuner Module 9176958
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A1779001203
Mercedes W177 Door Control Module Rear Left Right N/O/S A1779001203
Promo price
PLN 61.95
PLN 55.76
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 7527610-13
MINI One R50 W10 90HP Engine ECU Control Unit Module DME 7527610 Automatic
Promo price
PLN 123.95
PLN 111.56
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8T0959795H
Audi A4 B8 Door Control Module Unit ECU Rear Left Right N/O/S 8T0959795H
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9231443
BMW 3 Series F30 F80 M3 Radio Antenna Amplifier Suppression Filter 9231443
Promo price
PLN 47.95
PLN 45.55
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 9283529
Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9283529
Promo price
PLN 664.95
PLN 598.46
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 5QA919294L
Audi Q2 GA Park Parking Assist PDC Distance Control Unit Module 5QA919294L
Promo price
PLN 189.95
PLN 170.96
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 7631109
BMW F20 F21 F30 F32 F87 Battery Cable Negative IBS 7631109
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 9296981
Battery Cable Mini F55 F56 BMW X2 F39 Diesel B37 Positive Cable Wiring 9296981
Promo price
PLN 61.95
PLN 55.76
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 9393780
BMW F45 F46 Mini F55 F56 F57 KaFAS Camera Front Lane Assist ECU Module 9393780
Promo price
PLN 113.95
PLN 102.56
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 8K0907551-1
Audi S4 B8 3.0 TFSI 333HP CAKA Quattro Engine ECU Kit 8K0907551 Automatic
Promo price
PLN 1,044.95
PLN 731.47
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 8514577
BMW X3 F25 Diesel N47N Engine Gearbox Wiring Loom Harness 8514577
Promo price
PLN 189.95
PLN 132.97
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 7589971-1
Mini One R55 R56 N12 1.4 95HP ECU Engine Control Unit DME 7589971
Promo price
PLN 379.95
PLN 265.97
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 6900583
BMW E65 E66 Power Distribution Box 6900583
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
Part no. 6938297
Flap System Motor BMW E81 E82 E87 LCI E88 Top Active Cooling Flap Unit 6938297
PLN 42.95
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8408783
BMW X5 E53 Flap Radio Partition Mounting Part Cover Dashboard 8408783
Promo price
PLN 47.95
PLN 45.55
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A1645400750
Mercedes ML W164 Battery Fuse Box Power Distribution A1645400750
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 7543297
BMW 5 6 Series E60 E61 E63 E64 N52 Cable Alternator Starter Base B
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A9065460121
Mercedes W906 Battery Cable Negative Lead Wiring Harness A9065460121
Promo price
PLN 42.95
PLN 38.66
Delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-5%
Part no. 3455305-1
2 x Mini R57 R58 R59 DWA Door Alarm System Module Control Unit Set 3455305
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
Part no. A6519007500-26
Mercedes W204 W212 C220CDI 170HP OM651.911 Engine Control ECU A6519007500 Manual
PLN 237.95
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
Part no. 8J0971349A
Audi TT 8J Alternator Main Cable Wiring Harness Loom 8J0971349A
PLN 142.95
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. A2057200522
Mercedes GLC X253 Front Door Trim Cover Panel Strip Left N/S Black A2057200522
Promo price
PLN 237.95
PLN 166.57
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9210148
BMW F20 F30 Central Bass Speaker Stereo Subwoofer Right O/S 9210148
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2139062202
Mercedes W213 W222 Fuse Box Rear Electrical Fuse Unit Module A2139062202
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6820526
Head Unit BMW F20 F21 Radio Media GPS Sat Navigation Unit 6820526
PLN 569.95
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 6938217
BMW 3 Series E90 E91 Wiring Loom Cable Front Door Left Passenger Side 6938217
Promo price
PLN 37.95
PLN 36.05
Delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
Part no. 6946393
BMW E60 Hands Free Electronics Charging MULF 6946393 84216946393
PLN 189.95
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 4H0959107AB
Audi A8L 4H Tailgate Lift Boot Lid Control Unit Module Trunk 4H0959107AB
Promo price
PLN 284.95
PLN 199.47
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-5%
Part no. 5J0035411C
Skoda Fabia 5J Front Door Bass Loudspeaker Left Right N/O/S 5J0035411C
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 6905639
BMW E65 E66 Japan Mobile Phone Buffer Module ECU J-buf 6905639
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 5WA919297B-DGR
Audi A3 8V Control Unit PDC Parking Sensor Daytona Grey - Z7S 5WA919297B
PLN 42.95
Delivery - Tue, Dec 16
If paid before 14:00
Part no. 5E0971104B
Skoda Octavia Mk3 5E Rear Bumper Parking Sensor Wiring Harness Loom 5E0971104B
PLN 237.95
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 7939168
Rain Sensor BMW F20 F21 F30 F31 Windscreen Light Solar Condensation Unit 7939168
Promo price
PLN 237.95
PLN 214.16
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 8055326
BMW 3 4 Series F80 M3 F82 M4 LCI Fuel Tank Heat Insulation Plate 8055326
Promo price
PLN 189.95
PLN 132.97
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 9383069
Head Unit BMW F10 F20 F22 F30 Navigation Sat Nav High Control Module 9383069
PLN 1,709.95
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9118467
BMW X5 X6 Series E70 E71 Seat Backrest Adjustment Adapter Lead Cable 9118467
Promo price
PLN 47.95
PLN 45.55
Delivery - Tue, Dec 16
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 .