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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Control Unit BMW F10 F30 F31 330d 530d Diesel N57N Engine ECU DDE 8582802

£75.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7N0907530AQ

Skoda Yeti 5L Superb Mk2 Temic Gateway Control Module Unit ECU 7N0907530AQ

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8T0035223AP

Audi A4 S4 B8 Audio Amplifier Sound Booster Control Unit Module 8T0035223AP

£94.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. A2465407932

Battery Starter Wiring Mercedes W176 W246 Harness Cable Positive A2465407932

£113.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5E0919605J

Skoda Octavia 5E Sat Navi Stereo Radio Audio Head Unit Player Screen 5E0919605J

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7273667

BMW F30 F31 F32 Rear Tailgate Smart Opener Lower Antenna 7273667

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9217004-1

BMW X5 X6 E70 E71 Positive Battery Cable Wiring Plus Pole 9217004

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. A9069003903

Mercedes Sprinter W906 Central Lock Locking Control Unit Module A9069003903

£75.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9340339-2

BMW X1 E84 Max Brose Footwell Light Module Control Unit ECU FRM3R PL2 9340339

£142.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1568200089

Mercedes W176 W246 Tailgate Aerial Antenna Amplifier Unit A1568200089

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A6397600704

Mercedes Vito W639 Front Left Door N/S Lock Bowden Pull Cable A6397600704

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4F0953549A

Audi S6 C6 Steering Column Wiper Switch Stalk Cruize Control 4F0953549A

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8P0035785-1

Audi A3 8P Multimedia Interface Unit Module Bracket Mount 8P0035785

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7823310

BMW 3 Series F30 F31 330d 330dX N57N Diesel Alternator Starter Cable B+ 7823310

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6882963

Air Module BMW F01 F02 LCI F07 GT F10 F11 F13 ECU ICM Control Unit 6882963

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6998485

Air Module BMW F45 X1 F48 Mini F54 F55 F56 Air Module Control Unit ECU 6998485

£75.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8T0907468AB

Audi A4 B8 2.0 TDI CAGA Gateway Interface Control Module Unit ECU 8T0907468H

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 3Q0907338E

Audi S3 8V Front Headlight Lamp Range Control Module ECU 3Q0907338E

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6799083

Control Unit BMW F10 F11 X3 F25 Parking Brake Handbrake Module EMF 6799083

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8510592-4

BMW E81 E87 E90 LCI 118d 318d N47 143HP ECU Kit DDE 8510592 CAS3 Key Manual

£94.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9343687

BMW F01 LCI F07 F10 F11 F25 Safety Control Unit Air Module Bag ECU 9343687

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6850846

BMW F10 F11 F12 Parking Brake Unit Electric Control Module EMF 6850846

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6906347-1

BMW X5 E53 Rear Bumper PDC Plug Socket Loom Cable 6906347

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8509036-3

BMW X5 E70 30sd M57N2 286HP Engine ECU Unit DDE 8509036 Automatic

£474.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2128201689

Mercedes W212 Antenna Amplifier Aerial Module Unit A2128201689

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A1645402372

Mercedes W164 W251 Fuse Relay Module Rear Fuse Box Unit A1645402372

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8636054

BMW F20 F30 LCI 120i 320i 330i B48 Engine Wiring Cable Loom Harness 8636054

£142.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. A1698206726

Mercedes-Benz W245 ECU Control Unit Sensor Module Airbag A1698206726

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. rhd-8507876-1

BMW 3 Series E90 E91 E92 E93 LCI 320d N47N Engine Wiring Loom Harness Gearbox

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. KK3T-14A075-AB

Ford Transit Custom Fuse Box Cover Housing Lid Trim Cap Panel KK3T-14A075-AB

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. 3M5T-14B006-AD

Land Rover Freelander L359 Sensor Front Impact Crash Sensor 3M5T-14B006-AD

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A6229000500

Mercedes W447 OM622.951 Engine Control Unit Module ECU Kit A6229000500 Manual

£189.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 7H0907652A

Audi Q7 4L Yaw Rate Speed Sensor Module 7H0907652A

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9T11-12A650-HD

Ford Transit Connect 1.8 TDCi Engine Control Unit ECU Module 9T11-12A650-HD

£70.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7835548

BMW 5 6 Series E60 E61 LCI E63 E64 M5 M6 Earth Cable Starter Battery 7835548

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7515197

BMW Mini Cooper One R50 W10 Battery Cable Plus Pole 7515197

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6974373-1

BMW E81 E84 E87 E88 E90 Ultra Sonic Module Alarm System 9149671

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6938226-1

BMW E90 E90N E91 E91N LCI M3 Wiring loom rear door left right 6938225

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2038201311

Phone Adapter Mercedes W203 W211 Contact Plate Holder Telephone A2038201311

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 03L903017E

Audi A4 B8 A5 8T Q5 8R Quattro Alternator Generator 2.0 TDI 03L903017

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9170719

Navigation Head Unit BMW E87 E90 Professional CCC CD Player Controller 9170719

£332.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2469003014

Mercedes W176 W231 W246 Electric Parking Brake Control Unit Module A2469003014

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9868383

BMW F20 F21 F30 F31 F32 Body Control Comfort Module Unit FEM ECU LR01 9868383

£75.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2465402050

Mercedes W176 Fuse Box Control Unit SAM Module Relay A2465402050

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9383709

BMW X5 F15 X6 F16 M Sport Fuse Box Body Control Module BCM ECU Unit 9383709

£118.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4F0919603B

Audi A6 C6 Display Screen Multimedia Navigation Dashboard Unit 4F0919603B

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6822106

Head Unit BMW X3 F25 X4 F26 Radio Media GPS Sat Navigation Unit 6822106

£137.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6935600

BMW E81 E82 E87 E90 E91 PDC Parking Ultrasonic Sensor Sonora Metallic 6935600

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9131779

BMW E87 ECU Body Control Module L2 JBBFE PL2 61359131779 9131779

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6885215

BMW F90 M5 F91 M8 G05 G11 G30 Steering Column Control Unit Module 6885215

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6864206

Air Module BMW F20 F21 F30 F31 F32 ECU ICM Plus Control Unit 6864206

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4H0915181F

Audi A8L 4H Negative Battery Cable Lead 4H0915181F

£70.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8V0035874C

Audi A3 8V Multimedia Radio Sat Nav CD Player Head Unit 8V0035874C

£113.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9305736

BMW X1 E84 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9305736

£51.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0015424423

Parktronic Screen Mercedes W207 W212 Front Parking Sensor Display A0015424423

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2115457001

Mercedes C219 Fuse Box Control Unit SAM Module A2115457001

£94.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4L1910401H

Audi Q7 4L 3.0 TDI Quattro Engine Control Unit Module ECU 4L1910401H Automatic

£427.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6858547

BMW X3 F25 ICM Control Unit Air Module SRS ECU 6858547

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8518269-7

BMW E90 E91 LCI N47N 320d 184HP Engine ECU KIT DDE 8518269 CAS3 Key Automatic

£94.95

Free delivery: Aug 27

If paid before 14:00

Part no. KV6T-11000-BC

Ford Transit Connect Starter Motor Engine 1.5 TDCI Diesel KV6T-11000-BC

£37.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9259425-1

Positive Battery Cable BMW F30 F31 F80 M3 F82 M4 Plus Pole Power Red 9259425

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9335298

BMW 1 Series F20 Front Left Door N/S Wiring Loom Harness Cables 9215715

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7600019-3

BMW Mini Cooper R55 R56 Petrol N12 1.6 120HP ECU Kit DME + CAS3 + Key 7600019

£100.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2465840971

Mercedes W176 Fuse Box Allocation Fuse Placement Map Card Diagram A2465840971

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7552176-8

BMW Z4 E85 2.0i N46 150HP Engine Control Unit ECU DME 7552176 Manual Gearbox

£61.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8P0907063AB

Audi TT 8J Body Comfort Control BCM Module Unit ECU 8P0907063AB

£142.95

Free delivery: Aug 27

If paid before 14:00

Part no. RHD-A2218205389-1

Mercedes W221 Central Audio Navi Sat Display Screen Multimedia A2218205389

£51.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6859720

BMW 5 6 F07 F10 F11 F12 VDC Rear Suspension Level Control Unit Module 6859720

£75.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8518269-8

BMW E90 E91 LCI N47N 320d 184HP ECU Engine Control Unit DDE 8518269 Automatic

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2054402834

Mercedes W205 Parking Sensor Wiring Rear Bumper PDC Loom Cable A2054402834

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8T0959792G

Audi A4 B8 Front Door Lock System Module Right O/S Control Unit ECU 8T0959792B

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7168153

BMW MINI Cooper One Clubman R55 R55N LCI Wiper Motor Window Left Rear N/S 716815

£25.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2469000012-1

Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8702093-1

Head-Up Display Hud Mini Cooper F54 F55 F56 F57 Project Dash Screen 8702093

£56.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2128270006

Camera Module Mercedes W207 W212 Reversing Rear View Control Unit A2128270006

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8580308-1

BMW X1 E84 20dX Diesel N47N Engine Control Unit ECU Kit DDE 8580308 CAS3 Key

£161.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 8K0959795C

Audi A4 B8 Door Module Rear Left Right N/O/S Control Unit Module ECU 8K0959795C

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2129008825

Mercedes C204 Fuse Box Control Unit SAM Module Relay A2129008825

£66.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9166782

BMW X5 X6 Series E70 E71 Board Monitor Sat Nav System Screen 8,8" 9166782

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. A6395407809

Wiring Loom Mercedes W639 Vito Cable Sliding Door Rear Left N/S A6395407809

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2711501920

Engine Wiring Mercedes W204 C207 W212 M271 Harness Loom Cable A2711501920

£113.95

Free delivery: Aug 28 – Sep 7

If paid before 14:00

Part no. 9195956

Mini Cooper R55 R56 R57 CCC Navigation Navi Sat Nav Head Unit 9195956

£208.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4G0907637L

Audi RS6 C7 Acceleration Yaw Rate Sensor Module Control Unit ECU 4G0907637L

£32.95

Free delivery: Aug 27

If paid before 14:00

Part no. A6519003403-2

Mercedes W906 314CDI OM651.955 143HP Engine Unit Module ECU Kit A6519003403

£332.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8705958

Basic Navigation Unit Mini F54 F60 Countryman Sat Nav Head Unit 8705958

£251.95

Free delivery: Aug 27

If paid before 14:00

Part no. 9832609

Audio Amplifier BMW F40 G05 G20 G30 Top Hifi Harman Kardon Control Unit 9832609

£241.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5Q0959592L

Volkswagen Golf Mk8 Front Door Passenger Side Module Control Unit 5Q0959592L

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. A2215403050

Mercedes W221 Rear SAM Fuse Box Power Distribution Control Unit A2215403050

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5Q0959593L

VW Golf CD1 Front Door Right O/S Driver Side Module Control Unit ECU 5Q0959593L

£23.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8570383

BMW F10 F11 X5 E70 2.0 Diesel 12V Starter Motor 8570383

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. A0009002008

Mercedes W205 Body Control Module Control Unit BCM ECU Module A0009002008

£28.95

Free delivery: Aug 27

If paid before 14:00

Part no. rhd-A2219003504

Display Screen Mercedes W221 W216 Monitor Information Dash Dashboard A2219003504

£379.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8518269

BMW E90 E91 LCI N47N 320d 184HP ECU Engine Control Unit DDE 8518269 Manual

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7522284

Mini Cooper One R50 R52 W10 Battery Cable Plus Pole 7522284

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 8K0953568B

Audi A5 8T Wiper Switch Stalk Steering Column Wheel 8K0953502C

£47.95

Free delivery: Aug 27

If paid before 14:00

Part no. 5J0919475A

Skoda Octavia II 1Z Control Unit PDC Parking Sensor Module 5J0919475A

£18.95

Free delivery: Aug 27

If paid before 14:00

Part no. 4B0959643E

Audi A3 8P Crash Impact Airbag Sensor Unit Module Air Bag 4B0959643E

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 6960803

BMW E65 E66 E67 Control Unit Voice Input System Module 6960803

£13.95

Free delivery: Aug 27

If paid before 14:00

Part no. 7622980

Wiring Harness BMW F20 F21 F30 Motor Sensor System Module 2 7622980

£28.95

Free delivery: Aug 27

If paid before 14:00

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