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 X5 3 Series E70 E90 Clamping Ring B+ Transition Battery Cable 6930006

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. ML34-13C148-AE

VW Volkswagen Amarok NF Front Lamp Headlight Control Unit Module ML3413C148AE

€70.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0051512101

Mercedes W168 W169 W245 Petrol Engine Starter Motor A0051512101

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2139002422

Mercedes W213 Front Door Module Control Module Unit Right O/S A2139002422

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 06L907309E

Audi A4 B9 2.0 TFSI DLVA 190HP Engine Control Unit ECU 06L907309E Automatic

€99.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6823590

BMW F10 Footwell Light Control Unit Module ECU FRM III 6823590

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BK3T-18D815-BE-1

Ford Transit Mk8 PhoneRadio Panel Media Head Unit Control Panel BK3T-18D815-BE

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CK52-14633-AE

Range Rover L405 Door Wiring Loom Harness Cable Rear Left N/S CK52-14633-AE

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H22-14301-EA

Land Rover Discovery 3 L319 Negative Battery Cable Wiring Loom 4H22-14301-EA

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 99761843601

Porsche 911 Cayman 987 Cooling Air Control Unit Fan Control Module 99761843601

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6519007500

Mercedes W212 E220CDI OM651.924 Engine Unit Module ECU A6519007500 Automatic

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3Q0907338

Audi S3 8V Front Headlight Lamp Range Control Module ECU 3Q0907338

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9454245

Differential Locking Module BMW F90 M5 G20 Rear Axle Control Unit ECU 9454245

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7E0971794A-1

Volkswagen Transporter T5 Positive Battery Cable Wire 2.0 TDi CAAA 7E0971794A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9341325

BMW F33 Automatic A/C Air Conditioning Module Control Unit ECU 9341325

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A4479009005

Mercedes Vito W447 Head Unit Radio Navigation GPS Nav Display A4479009005

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4L0907553

Audi Q7 4L Air Suspension Adjustment Module Control Unit ECU 4L0907553

€70.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8U0971687J

Audi Q3 8U Door Loom Wiring Harness Cable Rear Left Right N/O/S 8U0971687J

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6394460132

Mercedes Vito Viano W639 Side Sliding Door Control Unit Module A6394460132

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469017000

Mercedes W176 Windscreen Rain Sensor Unit Module A2469017000

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8583423-3

Mini R60 Cooper SD N47N 2.0 143HP Engine ECU Kit DDE 8583423 CAS3 Key Manual

€194.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V4T-15K867-ABA

Ford Kuga Mk1 C394 Front PDC Parking Sensor Wiring Harness 8V4T-15K867-ABA

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7120204

BMW E93 Cable Wiring Loom Harness Hydraulic Pump 7120204 7191362

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR073313

Land Rover Discovery Sport L550 Battery Wiring Harness Cable Lead FK72-14A280-AC

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1698201185

Mercedes W169 W245 Front Door Control Unit Module Left N/S A1698201185

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0141542702

Alternator Mercedes Vito W639 Sprinter W906 Generator 14V 120A Bosch A0141542702

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7561834-13

BMW E87 E90 120i 320i N46 150HP Engine Control DME Module 7561834 Automatic

€123.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 90494959

GM Vauxhall Opel Relay 4-Pin Multi Use Glow Plug Unit Magenta 90494959

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P6035209

Volkswagen Touareg 7P Radio Navi CD Player Head Unit Mount Bracket 7P6035209

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3412336

BMW X3 E83 Battery Cable Negative Wiring 3412336

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6769834

BMW E61 E65 Suspension Air Supply Compressor Control Unit

€166.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AG91-12A692-BB

Ford S-Max Mk1 Engine Control Module ECU Unit Bracket Mount AG91-12A692-BB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0959754K

Audi A4 B8 A5 8T A6 C7 A7 4G Remote Key Fob Module 4H0959754K

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 99760302205

Porsche Cayman 987C Boxster 987 911T Alternator Generator 150A 14V 99760302205

€232.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2K7971104

VW Volkswagen Caddy SB Rear Bumper PDC Parking Sensor Wiring Loom 2K7971104

€123.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-15C670-AB

Range Rover Evoque L538 Sunroof Roof Blind Sun Blind Wire Harness BJ32-15C670-AB

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. JS7T-18D818-JB

Ford Mondeo Mk5 Radio Stereo Audio System Head Control Unit ECU JS7T-18D818-JB

€237.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0862335D

Audi A4 B8 Bluetooth Multimedia Interface Control Module Unit ECU 8T0862335D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8586540-2

BMW F30 F32 LCI 330dX 430dX N57N 258HP Control Unit ECU Kit DDE 8586540 FEM Key

€332.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8631668

BMW F20 F21 F30 LCI M140i 340i Wiring Harness Injection Valve Ignition 8631668

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2118201626

Mercedes S211 W211 Rear Door Control Unit Right O/S A2118201626

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V0907451

Audi A3 8V Sun Light Solar Sensor Control Detector 8V0907451

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 0-727-43

DURITE 12V Smart Programmable Voltage Sensitive Split Charge Relay 0-727-43

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0959760B

Audi S5 8T Front Seat Control Module Unit ECU Left Right N/O/S 8T0959760B

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8792845

BMW X3 G01 Door Wire Loom Driver Side Front Right O/S 8792845

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9307421

Camera Control Unit BMW F20 F21 F30 F31 KaFAS 2 Camera Module ECU 9307421

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9177118

CD Changer BMW X5 E70 X6 E71 Mini R55 R56 R57 6 Disc Changer Unit 9177118

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7H22-13N850-AA

Land Rover Discovery 3 L319 Negative Earth Cable Wiring Harness 7H22-13N850-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9363780

BMW F45 Seat Wiring Loom Harness Cable Rear Left N/S 9363780

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9171948

BMW X5 X6 E70 E71 Air Module Control ECU Unit Module 9171948 0285010250

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2049012704

Mercedes W204 ECU Control Unit Crash Impact Sensor Air Module A2049012704

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02E911024M

Audi A3 8V 2.0 TFSI DJHA Starter Motor 12V 02E911024M

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9252812

BMW F10 F11 F01 Fuse Box Power Distribution Junction Relay Rear 9252812

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4M8907777CA

Audi Q7 4M Air Suspension Adjustment Module Control Unit ECU 4M8907777CA

€265.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0959793N

Audi Q5 8R Front Door Module Control Unit ECU Driver's Side 8K0959793N

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8577625-4

BMW F20 F21 116d N47N 116HP Engine Control Unit DDE ECU Kit 8577625 Manual

€222.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009006713

PDC Module Mercedes W176 W246 Parking Assist Distance Control Unit A0009006713

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1734633

Ford Fiesta MK7 1.6 TDCI Starter Motor Engine Diesel 8V2111000AD

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DPLA-19H440-AF

Land Rover Discovery 4 L319 Keyless Entry Control Module DPLA-19H440-AF

€70.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. HJ32-14301-AA

Land Range Rover Evoque L538 Negative Battery Cable Lead Wire D HJ32-14301-AA

€23.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. A2479052404

Mercedes Sprinter W907 Remote Ignition Key Control Unit Fob A2479052404

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1698201285

Mercedes W169 W245 Front Door Control Unit Module Right O/S A1698201285

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3450847

BMW X3 E83 LCI Cable Loom Door Passenger Side Wiring Harness 3450838

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. L9W3-14D550-BA

Land Rover Range Rover Velar L560 Inverter Converter Cooling Fan L9W3-14D550-BA

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9390501

BMW 3 4 Series F31 F32 F80 M3 F82 M4 LCI USB Charger Adapter Socket 9390501

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2K5971206

VW Volkswagen Caddy Maxi 2k Radar Sensor Plug Loom Adapter Cable 2K5971206

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7011612

BMW 7 Series E65 E66 E67 Centre Console Coinbox With Vent Storage Compartment

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8E0035192T-2

Audi A4 S4 RS4 B7 Sat Nav Radio Audio Head Unit CD Multimedia Player 8E0035192T

€123.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9218381-2

BMW F10 F20 F30 F34 Steering Wheel Module Electronics Control Unit 9209427

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6934095

BMW 7 Series E65 E66 Door Wiring Harness Rear Right Left N/O/S

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03C906016FR-1

Audi A1 8X 1.4 TFSI CAXA 122HP Engine Control ECU Kit 03C906016FR Manual

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. K8D2-15K622-AB

Land Rover Range Rover Evoque L551 Comfort Control Module ECU K8D2-15K622-AB

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6922528

BMW 5 Series E61 E61N LCI Holder Bracket Additional Battery 6922528

€26.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9805075680

Citroen Relay Peugeot Boxer III Engine Glow Plugs Wiring Harness 9805075680

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. M8D2-14E159-AJ

Range Rover Evoque L551 Adaptive Drive Control Module ECU M8D2-14E159-AJ

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0025428919-1

Mercedes W176 W246 Relay 5-Pin Yellow Hella 12V SET X2 A0025428919

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9176078

BMW E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9176078

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1S0919275D-FSI

Audi Q3 8U PDC Parking Distance Control Sensor 1S0919275D Foil Silver - Z7G

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2038202285

Mercedes-Benz C-Class W203 Door Control Module Right Rear O/S A2038202285

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 510971693J

Volkswagen Golf Sportsvan Door Harness Rear Left N/S Door Wiring Loom 510971693J

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8693213-1

BMW F30 LCI 330e B48X Engine Control Unit ECU Kit DME 8693213 FEM Key Automatic

€740.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3Q0959435D

Audi TT FV Mk3 8S Keyless Module Control Unit Comfort Access 3Q0959435D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6399003701

Mercedes W639 Tire Tyre Pressure Control Module Unit A6399003701

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GR3T-18C847-CA

Ford Mustang Mk6 Antenna Amplifier Control Unit Module Controller GR3T-18C847-CA

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2479008615

Mercedes GLC X253 Camera Lane Assist Control ECU Module Unit A2479008615

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AM5T-14B342-AA

Ford Focus Mk3 Side Air Module Crash Impact Sensor Control Unit AM5T-14B342-AA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6882963

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

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059002211

Display Mercedes C205 Dashboard Central Multimedia Car System Screen A2059002211

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DS7T-19G317-BG

Ford Ranger Mk3 Power Inverter Converter Module Control Unit DS7T-19G317-BG

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9258350

Air Module BMW F20 F21 F22 F30 F31 F32 Control Unit ECU 9258350

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8573260-7

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 Key FEM Lock Manual

€441.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2045409533

Mercedes W204 Door Wiring Front Right O/S Door Cable Harness A2045409533

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5K0907539

VW Volkswagen Golf Mk6 5K Dashboard Light Sun Solar Sensor Unit 5K0907539

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8H0971085

Audi A4 B7 Cabrio Convertible Wiring Loom Rear Parking PDC Sensor 8H0971085

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6519005203-2

Mercedes W205 C 220d BlueEFFICIENCY 651.921 170HP Engine ECU Unit A6519005203

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A9067600404

Bowden Cable Mercedes W906 Rear Sliding Door Opener Cable Wire A9067600404

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2133401800

Mercedes W205 W213 High Voltage Battery Holder Mount Bracket Support A2133401800

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0907468AH

Audi A4 Allroad Avant A5 S5 Q5 RS5 Diagnosis Inteface Gateway Module 8T0907468AH

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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