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
-5%
Part no. 6921982
BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver Side
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A2055402850
C205 Fuse Box Mercedes C205 Electrical Interior Relay Fuse Socket Control A2055402850
Promo price
PLN 56.95
PLN 51.26
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9231399
Camera Module BMW F01 F07 F10 F11 F12 Based Assist Systems Control Unit 9231399
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 1742690-1
BMW E60 E81 E87 E90 E91 X3 E83 Relay Changer Make Contact Salmon Red Set 1742690
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8U0907468Q
Audi Q3 8U Gateway Control Module Unit ECU 8U0907468Q
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8602988
MINI F54 F55 F56 F57 F60 Cable Alternator Starter Wire 8602988
Promo price
PLN 141.95
PLN 134.85
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-30%
Part no. 9242670
DVD Changer BMW F01 F10 F11 F12 F20 F30 Disc Changer Control Unit 9259800
Promo price
PLN 474.95
PLN 332.47
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 8714478
BMW F40 Door Wiring Cable Harness Loom Rear Left Right N/O/S 8714478
PLN 75.95
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 6886187
Airbag Module BMW F20 F21 F30 F31 F32 ECU ICM Plus Control Unit Air Bag 6886187
Promo price
PLN 332.95
PLN 299.66
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7P5959107E
Porsche Macan 95B Rear Tailgate Control Module Unit 7P5959107E
PLN 189.95
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2059007123
Mercedes W176 W212 W246 Telematics Communication Control Unit Module A2059007123
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 7311541
BMW 2 Series F22 F87 M2 Rear Third Stoplamp Stop Lamp Brake Light White 7311541
Promo price
PLN 74.95
PLN 71.20
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8T0907468H
Audi A4 B8 Gateway Interface Control Module Unit ECU 8T0907468H
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2044401005
Mercedes-Benz C W204 Rear Left N/O/S Right Door Wiring Loom Harness A2045407609
Promo price
PLN 66.95
PLN 63.60
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 4M0907247A
Keyless Entry Amplifier Audi A4 B9 A5 F5 Control Box Module Antenna 4M0907247A
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9360357-1
Door Wiring Mini F55 F56 R60 Rear Right Left N/O/S Harness Loom Cable 9360357
Promo price
PLN 85.95
PLN 81.65
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8510249
Engine Wiring BMW E90 E91 LCI N47N Loom Harness Cable Automatic Gearbox 8510249
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
Part no. 99661821901
Porsche Boxster 986 Air Module Control Unit ECU 99661821901
PLN 379.95
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-5%
Part no. A1698207926
Mercedes W169 W245 Control Unit Front Left Door N/S Module A1698207926
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-5%
Part no. A1645400350-1
Mercedes ML W164 Fuse Prefuse Box Jump Start Terminal A1645400350
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 8585380-1
BMW F30 330d F32 430d N57N 258HP Control Unit ECU Kit DDE 8585380 FEM Key
Promo price
PLN 1,234.95
PLN 864.47
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 6964142
BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver-Side 6933266
Promo price
PLN 18.95
PLN 18.00
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2044409005
Mercedes W204 Battery Wiring Starter Alternator Wiring Harness A2044409005
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-10%
Part no. A1715403932
Mercedes SLK R171 Rear Bumper PDC Wiring Loom Parking Sensor Cable A1715403932
Promo price
PLN 141.95
PLN 127.76
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-10%
Part no. 1440105280
Citroen Jumpy MK2 Peugeot Expert 1.6 HDI Alternator Wiring Loom 1440105280
Promo price
PLN 85.95
PLN 77.36
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
Part no. 4M0959793H
Audi A5 F5 A4 B9 Front Door Control Module Unit ECU Driver's Side 4M0959793H
PLN 113.95
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. A9075402087
Mercedes W907 Starter Wiring Battery Alternator Cable Harness Loom A9075401305
Promo price
PLN 227.95
PLN 159.57
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-30%
Part no. 9301522
BMW F01 F02 F07 F10 F11 CAS4 Control Unit Key Reading Module 9301522
Promo price
PLN 284.95
PLN 199.47
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 7899655
Rear Speaker BMW E63 E64 Door Card Loudspeaker Left Right N/O/S Logic 7 7899655
Promo price
PLN 132.95
PLN 126.30
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-10%
Part no. 7E0907655A
Audi TT 8J ESP YAW Lateral Acceleration Sensor 7E0907655A
Promo price
PLN 94.95
PLN 85.46
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 4H0035225L
Audi A8 D4 4H Aerial Antenna Amplifier AMP Booster Module 4H0035225L
PLN 42.95
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 5Q4959593B
Seat Leon Mk3 5F Door Module Control Unit Front Driver's Side Door 5Q4959593B
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8V4971693F
Audi A3 8V Rear Left Right N/O/S Door Card Wiring Loom Harness 8V4971693
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9136725
BMW Mini Cooper One R55 R56 Multifuse B Battery Power Distributor 9136725
Promo price
PLN 28.95
PLN 27.50
Delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-30%
Part no. A2129005812
Mercedes S204 Estate SAM Module Fuse Box Relay Control Unit A2129005812
Promo price
PLN 332.95
PLN 233.07
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 9366409
BMW F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9366409
Promo price
PLN 379.95
PLN 265.97
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 1Z0035111A
Skoda Octavia II Head Disc CD Changer Player Unit 1Z0035111A
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 9141048
BMW E60 E87 E90 E91 Hands-Free Electronics Charging MULF2 9141048
Promo price
PLN 379.95
PLN 265.97
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 4F0941824
Audi S6 C6 Wirie Cable Fuse Box Holder Support 4F0941824
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 8639595-9
BMW F30 320iX N20 163HP Engine Unit ECU Kit DME 8639595 FEM + Key Automatic
Promo price
PLN 1,899.95
PLN 1,329.97
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9229847
BMW E70 Door Wiring Front Passenger Door Loom Cables Harness 9229847
Promo price
PLN 75.95
PLN 72.15
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 7172536
BMW F01 F10 F11 F20 F21 E90 LCI Control Unit Xenon Light 7172536
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. A6519009302-4
Mercedes W639 116 CDI 651.940 163HP Engine Module ECU Kit A6519009302 Key Lock
Promo price
PLN 1,757.95
PLN 1,230.57
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6867932
BMW F20 F21 F23 Mini Cooper F55 F56 Control Unit Trailer Tow Hitch 6867932
PLN 284.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 7638003
BMW F20 F21 F22 F23 F34 LCI F22 F30 F36 Starter Ground Cable 7638003
PLN 94.95
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A0045468540
Mercedes W221 Distributor Box Block Control Unit Relay A0045468540
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 9270646
BMW E88 ECU Body Control Module H4 Junction Box PL2RR JBBFE IIIR 9270646
Promo price
PLN 123.95
PLN 86.77
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6874337
BMW F10 F20 F30 VDC Rear M Sport Suspension Control Unit Module 6874337
PLN 260.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 6C0907361E
Fuse Box Audi A1 Seat Ibiza Control Module Relay Box 6C0907361E
PLN 332.95
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8K0907279
Audi A5 8T Gateway Convenience Body Module Control Unit ECU 8K0907279C
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2128201789
Mercedes W212 Antenna Amplifier Aerial Module C Pillar Left N/S A2128201789
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 6820931
Telematics Module BMW X1 F48 F20 F30 Bluetooth GPS Control Unit ECU 6820931
Promo price
PLN 161.95
PLN 145.76
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 4H0907401-1
Audi A8 4H 3.0 TDI CDTA 250HP Quattro Engine ECU Kit 4H0907401 BCM + Key + Lock
Promo price
PLN 1,614.95
PLN 1,130.47
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 2379303
Engine Wiring Mini One F57 Petrol B38 Loom Cable Harness Injector Module 2379303
Promo price
PLN 189.95
PLN 170.96
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A0065424220
Mercedes W164 W251 High Tone Horn Signal Right O/S A0065424220
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. A1775404910
Cable Wiring Mercedes W177 W247 Fuel Pump Sending Unit Plug Socket A1775404910
Promo price
PLN 142.95
PLN 100.07
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A1718204326
Mercedes SLK R171 Front Air Module SRS Control Unit ECU A1718204326
PLN 949.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. P1WT-19H517-AE
VW Volkswagen Amarok Mk2 Auto Brake Trailer Module Control Unit P1WT-19H517-AE
PLN 522.95
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 5G0971175C
Volkswagen Golf Mk7 Rear Tailgate Boot Lid Wiring Adapter Loom 5G0971175C
PLN 42.95
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 6863433
BMW F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6863433
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 5Q0959592D
Door Module Audi A3 8V VW Golf 7 Seat Leon 3 Front Right O/S 5Q0959592D
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 8517874
BMW F20 F21 F30 116d 316d Diesel N47N Engine Control Unit ECU DDE 8517874 Manual
Promo price
PLN 142.95
PLN 128.66
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. A2479004505-1
Mercedes Vito W447 Sprinter W907 W910 Telematics Module Control Unit A2479004505
PLN 189.95
Free delivery - Tue, Dec 16
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 - Tue, Dec 16
If paid before 14:00
-10%
Part no. A2188201926
Mercedes CLS C218 Bi-Xenon Headlight Ballast Module Control Unit A2188201926
Promo price
PLN 332.95
PLN 299.66
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 98661208300
Porsche Boxster 986 Rear Screen Window Heated Wiring Harness Cable 98661208300
PLN 94.95
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A2469052602
Dashboard Panel Mercedes W176 W246 Switch Dynamic Select Start/Stop A2469057902
Promo price
PLN 113.95
PLN 102.56
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8V7035225B
Audi A3 8V Antenna Amplifier Rear Right O/S 8V7035225B
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A0009054807
Mercedes W118 W177 W206 W247 NOX Sensor A0009054807
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8K0959793D
Audi A4 B8 A5 S5 8T Door Module Control Unit Front Left N/S 8K0959793D
Promo price
PLN 75.95
PLN 72.15
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 8W0959593H
Audi A4 S4 B9 Front Door Control Module Unit Driver's Side 8W0959593H
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. A1765401602
Mercedes W176 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1765401602
Promo price
PLN 123.95
PLN 86.77
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9229007
BMW F10 Antenna Amplifier Diversity 868 MHZ 9229007
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 9360371
BMW X6 F16 Fuse Relay Box Control Unit Power Distribution 9360371
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2045452647
Mercedes W204 Aerial Antenna Control Unit Bracket Holder Mount A2045452647
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 8R0907468N
Audi A5 8T Gateway Control Module Unit ECU 8R0907468N
Promo price
PLN 93.95
PLN 84.56
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. A2139005009
Mercedes W213 Door Module Rear Right O/S Control Unit A2139005009
Promo price
PLN 66.95
PLN 63.60
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 9380938
BMW 2 Series F45 Door Wiring Loom Harness Co-Driver's Passenger's Side 9380938
Promo price
PLN 142.95
PLN 128.66
Free delivery - Tue, Dec 16
If paid before 14:00
Part no. 95B035736A
Porsche Macan 95B USB SD SIM Card Module Multimedia Reader Port 95B035736A
PLN 474.95
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. A1679008812
Seat Module Mercedes W167 W177 W247 Control Unit ECU A1679008812
Promo price
PLN 161.95
PLN 145.76
Free delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 9252813
BMW 5 7 Series F01 F02 F10 F11 Power Distribution Fuse Box Rear 9252813
Promo price
PLN 47.95
PLN 43.16
Delivery - Tue, Dec 16
If paid before 14:00
-10%
Part no. 09D927750EE
VW Volkswagen Touareg 7L Automatic Gearbox Module Control Unit ECU 09D927750EE
Promo price
PLN 75.95
PLN 68.36
Free delivery - Tue, Dec 16
If paid before 14:00
-30%
Part no. 05E907309CB
Audi Q2 GA 35 TFSI 1.5 DXDB Engine ECU Kit Ignition + Key 05E907309CB Manual
Promo price
PLN 1,424.95
PLN 997.47
Free delivery - Tue, Dec 16
If paid before 14:00
-5%
Part no. 6923502
Mini R50 One D Diesel W17 Cable Starter Base B- Wire 6923502
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 .