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. A0035421619
Mercedes W177 Relay 052 Engine Fuse Box Relay Slot B D E 70A Tyco A0035421619
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 9191408
BMW X1 Series E84 Wiring Cable Loom Set Rear Door Left Right N/O/S 9191408
Promo price
PLN 56.95
PLN 54.10
Delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. 6960428
BMW 3 5 6 Series E60 E61 E63 E64 E90 E91 FBAS Analog Video Module Unit 6960428
Promo price
PLN 474.95
PLN 332.47
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 7L0959772D
VW Touareg Phaeton Heated Seat Control Module Unit 7L0959772D
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
Part no. 4N0907063ME
Audi Q7 4M Body Control Comfort Unit Module BCM Convenience Unit ECU 4N0907063ME
PLN 759.95
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. A2535401001
Battery Cable Mercedes C238 C253 Starter Alternator Wiring Harness A2535401001
Promo price
PLN 142.95
PLN 100.07
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. A0005428418
Mercedes A B C Class W169 W203 W245 Outside Air Temperature Sensor A0005428418
Promo price
PLN 61.95
PLN 58.85
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. 9347878
Dashboard Monitor BMW X5 F15 Onboard Central Display Screen 10,25" 9347878
Promo price
PLN 949.95
PLN 664.97
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 2757044
Mini R55 R56 R57 R58 Right O/S Electric Window Lifter Motor 2757044
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 6837092
BMW G30 G12 Fuse Relay Box Rear Trunk Power Distribution B + Box Basis 6837092
Promo price
PLN 61.95
PLN 58.85
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 1J6035111
VW Volkswagen Touareg 7L Golf 4 CD Changer 1J6035111
Promo price
PLN 94.95
PLN 85.46
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 1472984-2
Mini R50 R52 R53 R55 R56 R57 R58 R59 R60 5-Pin Black Relay Wiper Set 1472984
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
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 - Mon, Dec 15
If paid before 14:00
-5%
Part no. A2048704426
Door Module Mercedes W204 S204 Front Right O/S Control Unit A2048704426
Promo price
PLN 75.95
PLN 72.15
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 4H0907658C
Audi S3 8Y A5 F5 Q5 FY A8L 4H Air Quality Sensor Unit 4H0907658C
Promo price
PLN 142.95
PLN 135.80
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8573258-7
BMW F20 F21 F30 116d 316d N47N 116HP Engine ECU Kit DDE 8573258 Manual Key FEM
PLN 569.95
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. A2135409616
Mercedes Sprinter W910 Battery Sensor Negative Terminal Cable Wiring A2135409616
Promo price
PLN 61.95
PLN 58.85
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. 9286863
BMW X5 Z4 Series E70 E89 Active Sound Harman Becker Amplifier Design 9286863
Promo price
PLN 189.95
PLN 132.97
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. A2229005613
Rear View Camera Module Mercedes W205 W222 W253 Control Unit A2229005613
Promo price
PLN 75.95
PLN 72.15
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 7P0907311-1
Volkswagen Touareg 7P 3.0 TDI CASD 204HP Engine Unit ECU Set 7P0907311 Automatic
PLN 2,944.95
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 8W6971030BF
Audi A5 F5 Front Door Wiring Harness Cable Passenger Side 8W6971030BF
Promo price
PLN 284.95
PLN 256.46
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 6926358
BMW E87 E90 E91 E92 Front Seat Module Control Unit ECU 6926358
Promo price
PLN 75.95
PLN 72.15
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 06A903143P
Audi TT 8N Alternator Bracket Mount Holder 06A903143P
Promo price
PLN 42.95
PLN 38.66
Delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 9196935
Seat Module BMW X1 E84 E87 E90 E91 Seating Control Unit ECU 9196935
Promo price
PLN 61.95
PLN 55.76
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 8T0907468AD
Audi A4 B8 Gateway Interface Control Unit Module ECU 8T0907468AD
PLN 61.95
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 1388911-1
BMW E36 E38 E85 Mini R52 R57 2x Change-Over Contact Relay Violet Set 1388911
PLN 42.95
Delivery - Mon, Dec 15
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 - Mon, Dec 15
If paid before 14:00
-5%
Part no. 9321022
BMW Mini Cooper F55 F56 F57 B Junction Terminal Box 300-400 W 9321022
Promo price
PLN 84.95
PLN 80.70
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. A2469000012
Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012
Promo price
PLN 351.95
PLN 316.76
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 8510281
Engine Wiring BMW F30 F31 F32 F36 330d 430d N57N Loom Harness Cable 8510281
Promo price
PLN 474.95
PLN 427.46
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 9474810
Air Module BMW G30 G31 X3 G01 X4 G02 SRS Control Unit ECU 9474810
Promo price
PLN 188.95
PLN 170.06
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2239052400
Mercedes W177 W223 W247 Crash Impact Deployment Sensor Unit A2239052400
PLN 75.95
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. A2139004625
Mercedes W213 C238 C253 C257 Air Module Control ECU Sensor A2139004625
Promo price
PLN 322.95
PLN 226.07
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 9261111
BMW 1 3 4 Series F20 F21 F30 F31 F32 Power Distribution Fuse Box Rear 9261111
Promo price
PLN 89.95
PLN 85.45
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. A2539009309
Mercedes C253 W293 Rain And Light Sensor Control Unit Module ECU A2539009309
Promo price
PLN 332.95
PLN 233.07
Free delivery - Mon, Dec 15
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 - Mon, Dec 15
If paid before 14:00
-5%
Part no. 90589541
Vauxhall Opel Astra G Fuse Box Covering Trim Panel Lid Housing 90589541
Promo price
PLN 47.95
PLN 45.55
Delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 6977982
Mini Cooper R50 R56 R57 R60 Relay No Contact Taubenblau 6977982
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 9807756
Mini Cooper R60 Wiring Passenger Loom Front Door Cables Left N/S 9807756
Promo price
PLN 46.95
PLN 42.26
Delivery - Mon, Dec 15
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 - Mon, Dec 15
If paid before 14:00
-10%
Part no. A2079011900
Air Module Mercedes W207 A207 Control Unit ECU Air Module Sensor A2079011900
Promo price
PLN 284.95
PLN 256.46
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. 8W0907063CF
Audi A4 B9 Body Control Comfort Unit Module BCM Unit ECU 8W0907063CF
Promo price
PLN 474.95
PLN 332.47
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. A2049007508
Mercedes W204 Display Screen Monitor Radio Sat Nav Navigation Unit A2049007508
Promo price
PLN 94.95
PLN 85.46
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 6972651
BMW Mini R52 Cabrio Convertible Folding Top Roof Module 6972651
Promo price
PLN 94.95
PLN 90.20
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 6819195
PDC Module BMW F45 X3 F25 Mini F55 F56 Parking Distance Sensor Unit 6819195
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
Part no. 04L907309R-3
Audi A3 8V VW Golf VII 2.0 TDI 150HP CRLB Engine Unit ECU Kit 04L907309R Manual
PLN 569.95
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. 4H0915181F
Audi A8L 4H Negative Battery Cable Lead 4H0915181F
Promo price
PLN 351.95
PLN 246.37
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 9185542
BMW X5 E70 CCC Radio CD Player Navigation 9185542
Promo price
PLN 1,139.95
PLN 1,025.96
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 8570676
BMW F30 F32 LCI N57N N57Z Diesel Engine Alternator Generator 230A Valeo 8570675
Promo price
PLN 227.95
PLN 205.16
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 9119446
BMW E81 X1 E84 E87 E90 E91 E92 Fuse Box Power Distribution Unit Front 9119446
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 8630168
BMW 3 F30 LCI 330e Hybrid Charging Control Unit Bracket Holder Mount 8630168
Promo price
PLN 94.95
PLN 85.46
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 9227118
BMW F07 GT On Board Central Information Display Screen Monitor 10,25" 9227118
Promo price
PLN 189.95
PLN 170.96
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2215403050-1
Mercedes W221 Rear SAM Fuse Box Power Distribution Control Unit A2215403050
PLN 170.95
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 7316147
BMW F30 F31 F34 Headlight Module Xenon Headlamp Control Unit Lear TMS 7316147
Promo price
PLN 379.95
PLN 341.96
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. A0045454140
Mercedes ML W164 W251 Door Wiring Joint Protective Cap Bracket
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 6962723
BMW E60 Light Control Unit Module LME6X MAN.LWR Lear 6962723
Promo price
PLN 61.95
PLN 58.85
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 6949226
BMW E63 E64 Convertible Coupe DWA Alarm System Module Control Unit 6949226
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 1722094
Battery Cable BMW E36 E46 M43 M57 Starter Alternator Wiring Harness 1722094
Promo price
PLN 94.95
PLN 85.46
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. A1693300907-1
Mercedes A B W169 W245 Front Left N/S Suspension Control Track Arm A1693300907
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 6H52-18C808-BD
Land Rover Freelander II Audio Amplifier Control Module 6H52-18C808-BD
Promo price
PLN 66.95
PLN 60.26
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. A2229009519-1
Mercedes C238 Head Unit Radio CD Player Audio Sat Nav Control A2229009519
Promo price
PLN 2,279.95
PLN 1,595.97
Free delivery - Mon, Dec 15
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 - Mon, Dec 15
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 - Mon, Dec 15
If paid before 14:00
-10%
Part no. 9367673
Mini Cooper F55 F56 F57 Visual Boost Surround Central Cover Instrument 9367673
Promo price
PLN 170.95
PLN 153.86
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 9322900
BMW F20 F21 F22 F30 F31 Negative Minus Pole IBS Battery Lead Cable 9322900
Promo price
PLN 61.95
PLN 58.85
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. 3WA959595A
Audi A3 RS3 8V Door Control Unit ECU Module Front Driver's Side 3WA959595A
Promo price
PLN 237.95
PLN 166.57
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 7199885
BMW E93 Cabrio Convertible Folding Top Roof ECU Module CTM 7199885 7199882
Promo price
PLN 61.95
PLN 58.85
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 6949228-2
4 x Mini Cooper R52 Convertible DWA Door Alarm System Module Unit Set 6949228
Promo price
PLN 56.95
PLN 51.26
Delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. A2038700326
Mercedes CLC CL203 Front Left N/S Door Control Module Unit A2038700126
Promo price
PLN 66.95
PLN 60.26
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 8381963
BMW E39 Petrol M52 523i Body Control Module 8381963
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
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 - Mon, Dec 15
If paid before 14:00
-30%
Part no. 8510221-16
BMW E90 E91 E92 LCI 325d Diesel N57 204HP ECU Engine Module DDE 8510221 Manual
Promo price
PLN 332.95
PLN 233.07
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 9209183
Sound Speaker BMW X3 F20 F21 F25 Mid Range Stereo HiFi 9209183
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 9210863
BMW X3 F25 Fuse Box Power Distribution Module Relay Unit 9210863
Promo price
PLN 75.95
PLN 72.15
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. A2219004704
Mercedes-Benz S W221 Comand 6-Changer CD Radio Head Unit DVD Navi A2219004704
Promo price
PLN 3,324.95
PLN 2,327.47
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 6948182
BMW E60 E61 LCI Alarm System Unit Ultra Sonic Module
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. A0061511001
Starter Motor Mercedes W906 M272 Engine Diesel Bosch A0061511001
Promo price
PLN 94.95
PLN 85.46
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 8677250
Battery Starter Cable Mini Countryman F60 Cooper S B48 Positive Plus 8677250
Promo price
PLN 94.95
PLN 85.46
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. A2059002011
Mercedes W205 Rear Door Control Module Unit Right O/S ECU A2059002011
Promo price
PLN 189.95
PLN 132.97
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. 3457568
Mini Cooper R55 R56 R57 LCI R60 R61 Radio Boost CD Player Unit Head 3457568
Promo price
PLN 949.95
PLN 664.97
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. A1679008311
Mercedes C238 Door Control Unit Module ECU Front Left N/S A1679008311
Promo price
PLN 123.95
PLN 111.56
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. A2055405203
Mercedes W205 Negative Cable Battery Lead Minus Pole Wiring A2055405203
PLN 104.95
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. A2198200326
Door Module Mercedes C219 Rear Door Right O/S Control Module A2198200326
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
Part no. 284B12763R
Smart ForTwo C453 Vauxhall Vivaro Mk2 BCM Body Control Module Unit 284B12763R
PLN 351.95
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 7611322
BMW F01 F02 F06 F07 F10 F11 F12 Positive Cable Battery Lead N55 Engine 7611322
Promo price
PLN 113.95
PLN 102.56
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. 8368167
BMW E38 Inclination Indicator Alarm Tilt Sensor Control Module 8368167
Promo price
PLN 47.95
PLN 43.16
Delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 9189906-1
BMW E88 E93 Air Module Control Unit ECU 9189906
Promo price
PLN 94.95
PLN 90.20
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. A1779005509
Door Module Mercedes C118 W177 H243 Rear Left N/S Door Control A1779005509
Promo price
PLN 284.95
PLN 199.47
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. 6807487
Fuse Box BMW G20 X3 G01 Power Distribution Control Unit Module Front 6807487
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. A2319014702
Mercedes R231 Air Module Control Unit ECU SRS Module A2319014702
Promo price
PLN 949.95
PLN 854.96
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. A2465411005
Battery Cover Mercedes C117 W176 W246 Box Trim Lid Panel Housing A2465411005
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. A0025421119-1
Relay Unit Mercedes W163 W168 W203 W211 4-Pin Black Hella A0025421119 Set 2x
Promo price
PLN 42.95
PLN 40.80
Delivery - Mon, Dec 15
If paid before 14:00
Part no. 8631672
BMW 1 3 Series F20 F30 LCI M140i 340i Engine Gearbox Module Wiring Loom Harness
PLN 663.95
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. A2129005300
Seat Module Mercedes W204 W212 Control Unit Front Left Right N/O/S A2129005300
Promo price
PLN 237.95
PLN 166.57
Free delivery - Mon, Dec 15
If paid before 14:00
-5%
Part no. A2218210197
Mercedes W221 Cover Wiring Cable Front Door Protection Seal Sleeve A2218210197
Promo price
PLN 47.95
PLN 45.55
Delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. 9339274
CAS4 Module BMW F01 F07 F10 F11 F12 X3 F25 Key Reading Control Unit 9339274
Promo price
PLN 284.95
PLN 199.47
Free delivery - Mon, Dec 15
If paid before 14:00
-10%
Part no. A2055403606
Mercedes W205 Front Axle Damper Adjustment Right O/S Wiring Harness A2055403606
Promo price
PLN 123.95
PLN 111.56
Free delivery - Mon, Dec 15
If paid before 14:00
Part no. 3457403
BMW Mini Countryman R60 Footwell Light Module High EKS ECU LEAR PL3 FRM 3457403
PLN 550.95
Free delivery - Mon, Dec 15
If paid before 14:00
-30%
Part no. 7638322-2
Mini One R56 LCI N16 98HP Engine ECU Kit DME 7638322 + CAS3 + Key Automatic
Promo price
PLN 1,519.95
PLN 1,063.97
Free delivery - Mon, Dec 15
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 .