What is the construction and purpose of automotive electrical systems?

Automotive electrical systems are a set of components responsible for starting, charging, powering consumers, and controlling vehicle electronics. They include, among others, the battery, alternator, starter, fuses, relays, controllers, and wiring harnesses. These components are located in different parts of the car and work together through connectors and signal buses.

What are automotive electrical systems used for?

Automotive electrical systems are used to supply energy and transmit control signals to vehicle components. Thanks to them, it is possible to start the engine, charge the battery, and operate lights, windows, air conditioning, and safety systems. A fault in one circuit can affect not only comfort but also the correct operation of other modules.

What role does the wiring harness play in a car?

The wiring harness is an organized set of wires, covers, and connectors that connects individual consumers and controllers in the vehicle. It is used to transmit power, ground, and signals between modules. Its construction depends on the body version, equipment, and mounting location, so when replacing it, you must compare the wire routing, plug type, and number of pins.

How to choose an electrical part for a specific car?

The safest way is to compare the OEM number, manufacturer number, connector type, and mounting location. It is also worth considering the engine version, year of manufacture, body type, and equipment, as the same model may have different variants of the alternator, starter, or controller. In practice, verification by VIN is very helpful.

What symptoms indicate a problem with the electrical system?

Typical signals include difficulty starting, flashing warning lights, dimming lights, unstable charging, or the failure of selected consumers. In some cases, controller errors, air conditioning malfunctions, or periodic power outages also occur. Symptoms must always be linked to a specific circuit and cooperating component.

How to take care of automotive electrical systems in daily use?

The basis is regular inspection of the battery condition, terminals, ground wires, and charging. It is also good to check the tightness of housings, the condition of harness insulation, and the cleanliness of contacts exposed to moisture. A quick reaction to the first symptoms of voltage drops or electronic errors makes it easier to avoid a major failure.

Automotive electrical systems

At 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.

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BMW F39 F40 F45 F46 F48 Mini F54 F55 F56 F57 Air Quality Sensor AUC 6833650

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5B4A355

BMW X1 U11 X2 U10 Front Passenger Side Door Control Unit Module 5B4A355

€104.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9798377-1

BMW F45 LCI 225xe B38X B38A15A 224HP Engine ECU DME Kit 9798377 BDC + Key

€379.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9118468

BMW X5 X6 Series E70 E71 Seat Backrest Adjustment Adapter Lead Cable 9118468

€27.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9348935

BMW X1 F45 F48 Mini F55 F56 F60 Air Module Control Unit Module ECU 9348935

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8370933

BMW 3 5 6 Series E60 E61 E63 E90 Support Bracket Navigation Computer 8370933

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9208452

Wiring BMW F07 Front Bumper PDC Wiring Park Assist Sensor Harness 9208452

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9866980

BMW F20 Body Control Unit Module REM Fuse Box 9866980

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7831186

BMW E46 M3 Starter Motor Positive Battery Cable Lead Wiring Harness 7831186

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7391043

BMW F10 X1 F48 Mini F54 Rear Tailgate Smart Opener Bottom Wire Sensor 7391043

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A2D542

BMW F40 Body Control Module Domain Controller Unit BDC ECU 5A2D542

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8573779-1

BMW F30 330dX 258HP N57N Control Unit Module ECU DDE 8573779 Key FEM Automatic

€308.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7273667

BMW F30 F31 F32 Rear Tailgate Smart Opener Lower Antenna 7273667

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8809737

PDC Wiring BMW X4M F98 G02 Rear Bumper Parking Assistance Sensor Harness 8809737

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9436281

BMW G20 G21 Front Door Wiring Loom Harness Cable Driver Side 9436281

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9146329-1

BMW X5 E60 E61 E65 E70 Front Left N/S Seat Angle Adjustment Drive 9146329

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7634297-3

BMW F20 F30 116i 316i N13 136HP Engine Control ECU Kit DME 7634297 Automatic

€427.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8377939

BMW X5 E39 E53 Sunroof Sliding Roof Drive Unit Motor Actuator 8377939

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7273666

BMW F30 F31 F32 Rear Tailgate Smart Opener Upper Antenna 7273666

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8606306

BMW F10 F11 F30 184 HP Petrol N20 Engine Control Unit ECU DME 8606306 Manual

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9340996

BMW F87 Door Wire Harness Cable Loom Front Passenger's Side 9340996

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6958449

BMW 7 Series E65 E66 E67 Control Unit Door Rear Driver Side 61356958449 6958449

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6923502

Mini R50 One D Diesel W17 Cable Starter Base B- Wire 6923502

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8681185

BMW F40 F44 F46 X1 F48 Mini F54 F56 F57 F60 Engine Wiring Loom Harness 8681185

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9303543

BMW F20 F30 F31 Fuse Box Electrical Power Distribution 9303543

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9304007

BMW G30 Seat Occupancy Sensor Mat Passenger Side Control Unit Module 9304007

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8716602

BMW G20 Front Door Wiring Loom LED Light Harness Passenger Side 8716602

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9289374-1

BMW X5 F15 X6 F16 Front Battery Fuse Box Positive Distribution Terminal 9289374

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8580053

Starter Cable BMW G30 G31 G32 Alternator Wiring Starter-Base B+ 8595355

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8367253

BMW E38 Fuse Box Battery Power Junction Control Unit Module 8367252 8367253

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9244134

BMW 1 3 X1 Series E81 E87 E90 E91 E92 Ultra Sonic Module Alarm System 9244134

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7533282

BMW X3 Z4 E83 E85 E86 Fuse Box Cover Power Distribution Engine Bay 7533282

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6905639

BMW E65 E66 Japan Mobile Phone Buffer Module ECU J-buf 6905639

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6778809

Mini Cooper One R55 R56 R57 Xenon Headlight Level Sensor 6778809

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9462542

BMW F20 F21 F30 F31 Mini F56 Air Conditioning Module A/C Control Unit 9462542

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9878329

BMW U06 X1 U11 Front Subwoofer Speaker Bass Low Tone Left N/S 9878329

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9240647

BMW F02 Television Tuner TV Receiver Control Unit Module 9240647

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9294912

BMW F10 F11 X5 F15 X6 F16 Rear Seat Compartment Screen Display SET 9294912

€569.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7591529

BMW F12 F13 F20 F21 Alternator Generator 14V 210A N55 Petrol Engine 7591529

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9273666

BMW F33 F83 M4 Convertible Rear Antenna Aerial Amplifier AM/FM 9273666

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7838041

BMW M3 E93 Engine Throttle Body Cable Wiring Loom Plug 7838041

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6797439

BMW F07 GT ICM Management Control Unit Module DSC Brakes 6797439

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8579482

BMW F20 F21 116d ed Diesel N47N 116HP Engine Control ECU DDE 8579482 Manual

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9894915-1

BMW G30 Engine Control Unit DME ECU + Key 2.0 B48X 251HP Automatic Set 9894915

€469.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8519009

BMW X1 E84 20d 20dX Diesel N47N Engine Control Unit ECU DDE 8519009 Manual

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7618644

BMW Z4 Series E89 Roadster Petrol N20 Cable Alternator-Starter-Base B 7618644

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9359013

Control Unit BMW F01 F02 F07 F10 F11 CAS4 Key Reading Module 9359013

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8716522

BMW G20 G21 G26 Front Seat Wiring Loom Harness Cable Manual Right O/S 8716522

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8570238

BMW E87 E90 F20 F30 Engine Starter Motor Actuator N47 N47N Diesel 8570238

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8379941-1

BMW X5 Series E53 Interior Roof Alarm Sensor Ultra Sonic Module 8379941

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7395738

BMW F33 F83 Battery Holder Tray Bracket Carrier 7395738

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8577625

BMW F20 F21 116d ed N47N Engine Control Unit ECU DDE 8577625 Manual Transmission

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8519009-3

BMW X1 E84 20dX Diesel N47N 184HP Engine Control Unit ECU DDE 8519009 Automatic

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3419515

BMW E83 LCI Valvetronic Starter Cable Wire Loom 3419515

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8582280

Engine Control ECU BMW F20 F21 116d N47N 116HP DDE 8582280 Manual Transmission

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2622562

BMW G20 G21 G23 G26 G42 G80 Subwoofer Bass Speaker Under Seat Right O/S 2622562

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9186664

BMW 3 Series E92 Front Right O/S Driver Side Door Wire Wiring Loom 9186664

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8707750

BMW F20 F21 F22 F23 F87 M2 Body Domain Controller BDC Module FEM 8707750

€279.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7952991

BMW U06 Active Tourer Power Management Control Unit Power Supply Module 7952991

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9304350

BMW F45 F46 F48 Mini F54 F56 Battery Tray Holder Bracket Support 9304350

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8510591-7

BMW X1 E84 2.0d N47 177HP sDrive Engine Control Unit ECU DDE 8510591 Manual

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6942100

BMW E60 Air Module Control Unit Gateway Sensor B Pillar Right O/S 6942100

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8801718

BMW G31 Touring Switchboard Relay Fuse Box Module Control Unit 8801718

€218.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9353066

BMW F20 F21 F30 F31 Relay Cover Electric Fan Relay Cap 9353066

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A27C22

BMW X1 U11 Potential Equalizator Wiring Harness Cable 5A27C22

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8648221

BMW G11 G12 G14 G15 G16 G30 G31 G32 GT Engine Control Unit Box Cover 8648221

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6868077-2

BMW F20 F21 F22 F30 F31 Power Steering Rack Wiring Harness Cable 6868077

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9394668

BMW F06 LCI Footwell Module Control Unit ECU FRM III 9394668

€118.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9387147

BMW F30 LCI 330e B48X Positive Battery Cable Plus EME Loom 9387147

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4752820

Positive Cable BMW F20 F21 Under Bonnet Battery Wiring Loom 4752820

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7555193

BMW F10 Control Unit Box F07 F11 Engine Ventilation Housing Box 7555193

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9186654

BMW E92 Door Wiring Harness Cable Loom Front Driver's Side 9186654

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7619144

Engine Wiring BMW F10 F20 F21 F30 N20 Loom Harness Ignition Module 7619144

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9393669

BMW F11 LCI Comfort Module Body Control Unit Module BCM Unit ECU 9393669

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9356183

BMW 1 2 Series F20 F21 F22 Control Unit Sensor Air Conditioning System 9356183

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6927312-1

Seat Module BMW E60 E61 E65 E66 Front Seat Control Unit Module ECU 6927312

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2354693

BMW E39 E46 E60 E65 X3 E83 M54 Petrol Starter Motor 7515392

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8485066

BMW X3 G01 X4 G02 Positive Cable Alternator Starter Base B Wire Line 8485066

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7304589

BMW F01 F02 Headlight Module LEAR TMS Headlamp Control Unit Module 7304589

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7823345

BMW X5 F15 F20 F21 F22 F30 F31 Alternator Generator 14V N47N Diesel 7823345

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6920292

BMW 7 Series E65 Cable Harness Loom Front Door Wiring Left Right N/O/S 6920292

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6993311

Seat Module BMW F20 F32 F33 Control Unit Front Left Right N/O/S 6993311

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8473189-1

BMW X5 F15 30dX N57N 258HP Engine Control Unit ECU Kit 8473189 Automatic

€436.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8088723

Engine Wiring BMW X3M F97 X4M F98 Petrol S58 Module Sensors 1 Harness 8088723

€203.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8510841-1

BMW X5 E70 LCI 40dX N57S 306HP Engine Control Unit ECU KIT DDE 8510841 Automatic

€560.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9226881

BMW 1 Series F20 F20N F21 F21N LCI Radio Aerial Antenna Amplifier AM/FM 9226881

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8512291-2

BMW 3 Series E90 E91 LCI N47N 320d 184HP ECU KIT DDE CAS 3 Key 8512291 Manual

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8385159-1

BMW X3 E83 E46 Battery Cable Holder Mounting B Base Trim Carrier 8385159

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8506444-1

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8506444 CAS3 + Key

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7409738

BMW X3 F25 Adaptive Headlight Xenon AHL Ballast Control Unit Lear TMS 7409738

€227.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7614366

BMW F10 F11 528i N53 258HP Engine Control Unit ECU DME 7614366 Automatic

€854.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2383676

Battery Cable BMW F22 Negative Earth Cable Minus Electrical Wire 7625999

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9380203

BMW G30 G31 G32 G11 G12 Cable Wiring Harness Holder Guide Mount 9380203

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7836126

BMW 5 6 E60 E61N M5 E63 E64 M6 Outlet Camshaft Exhaust Cylinders 6-10 126/A2

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9228495

BMW F07 GT ECU Body Control Module Junction Box V12 PL2 JBBFE III 9228495

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8621490

Alternator Cable BMW F21 F22 F30 LCI 125i 220i 228i 320i N20 Starter 8621490

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9185542-1

BMW X5 E70 Radio Navigation CCC Professional CD Player Head Unit 9185542

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8585384-1

BMW X4 F26 X5 F15 N57 Diesel Engine Control ECU Kit Set 8585384 Automatic

€393.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9221953

BMW X5 E70 Interior Inner Wiring Loom Harness Cable 9221953

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

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