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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Mercedes W222 Sound Amplifier Control Unit Module ECU A2229001609

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. D1BT14D212NA

Ford Transit Connect Mk2 II Bluetooth Control Module Unit ECU D1BT14D212NA

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9388183

BMW F45 Active Tourer Body Control Module ECU 9388183

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0465455728

Mercedes A207 W212 S212 Wiring Harness Plug Connector Black 2-Pin A0465455728

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A7A0B8

Bmw U06 U10 F70 Engine Wiring Wire Harness Loom Servotronic Cable 5A7A0B8

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1644400650

Mercedes W164 W251 Front Wiring Loom Harness Seat Cable Loom A1644400650

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0035652B

Audi Q7 4L MMI Multimedia Radio CD Player Sat Nav Head Unit 4L0035652B

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7624617-1

BMW F20 F21 F30 F31 F32 Cable Alternator Starter Base B 7624617

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229063302

Fuse Box Mercedes W205 W222 Engine Compartment SAM Module Relay Unit A2229063302

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA906337

Volkswagen Passat B7 Engine ECU Control Module Mount Cover Carrier 3AA906337

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6822680

Camera Kafas BMW F20 F21 F22 F87 LCI Front Windscreen Camera 6822680

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. E88-SCREEN

BMW E88 Dashboard On-Board Screen Information Display Touch Monitor Unit

€222.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9068200079-1

Mercedes W639 Stereo Radio CD Player Head Unit A9068200079

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C0937132C

Audi A1 S1 8X Fuse Box Relay Top Upper Cover Cap Flap 6C0937132C

€23.95

Free delivery: Nov 12 – 13

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Part no. 6797031

BMW F25 Shock Absorber Sensor Adapter Wiring Loom Cable Front Axle 6797031

€23.95

Free delivery: Nov 12 – 13

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Part no. 7579155-1

Starter Motor BMW X5 E70 LCI X6 E71 Z4 E89 N20 N55 Petrol Engine 7579155

€32.95

Free delivery: Nov 12 – 13

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Part no. AM5T-19E663-AC

Ford Focus Mk3 Sunlight Sun Light Solar Sensor Unit AM5T-19E663-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. 281000Q012

Toyota Aygo Starter Motor 1.0 Petrol Manual Engine 1KRFE 281000Q012

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FX23-14A005-CP

Jaguar XF X250 Relay Fuse Box FX23-14A005-CP

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EJ32-14290-CGC

Range Rover Evoque L538 Engine Bay Fuse Box EJ32-14290-CGC LR046377

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 39540-SEA-E110-M1

Honda Accord Mk7 Sat Nav DVD Disc Reader Multimedia Player 39540-SEA-E110-M1

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8L0941822

Audi TT 8N VW VW Golf Mk4 Fuse Box Relay Central Control Unit Module 8L0941822

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L907309E-3

Audi A3 8V 1.6 TDI CRKB 110HP Engine Control ECU Kit 04L907309E Manual

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X23-14B345-AB

Jaguar XF X250 Air Module Crash Side Impact Sensor B-Pillar Side 8X23-14B345-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6949226-2

4 x BMW E63 E64 DWA Door Alarm System Module Control Unit Set 6949226

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0971035G

Audi Q7 4L Door Card Wiring Harness Cable Loom Front Driver's Side 4L0971035C

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K5971693AS

Audi A6 C8 Door Card Trim Wiring Harness Loom Rear Left Right N/O/S 4K5971693AS

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H0998476

Volkswagen Golf Mk8 CD1 Headlight Ballast Module Control Unit Left N/S 5H0998476

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GJ32-13W030-DC-2

Land Rover Evoque L538 Front Headlight Headlamp Wiring Left N/S GJ32-13W030-DC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9381884

Mini F54 F55 F56 Antenna Amplifier Active Sound Module Control Unit 9381884

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. MICROLISE-MTU4-A-TRACKING-MODULE-UNIT

Volkswagen Caddy Maxi 2k Microlise MTU-4A Tracking Module Unit ECU Control

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9346566

BMW F45 F46 X1 F48 X2 F39 Negative Battery Cable Terminal Wiring 9346566

€23.95

Free delivery: Nov 12 – 13

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Part no. A4475450069-2

Mercedes Vito W447 Control Unit Fuse Box Compartment Mount A4475450069

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2539003001

Mercedes C253 Electronic Control Unit Module A2539003001

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0325453032

Mercedes W220 Automatic Gearbox Control Unit Module ECU A0325453032

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009050110

Mercedes W204 W212 W221 Blind Spot Radar Sensor Left Right N/O/S A0009050110

€270.95

Free delivery: Nov 12 – 13

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Part no. 5N0810773E

Volkswagen Tiguan 5N Fuel Filler Flap Actuator Release Servomotor 5N0810773E

€23.95

Free delivery: Nov 12 – 13

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Part no. A0009054807

Mercedes W118 W177 W206 W247 NOX Sensor A0009054807

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2475455500

Mercedes W177 Control Unit Bracket Amplifier Holder Mount Carrier A2475455500

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2215401833

Mercedes W221 Door Harness Left Right N/O/S Rear Door Wiring Loom A2215401833

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465402705

Mercedes W176 Door Harness Loom Cable Wiring Front Left Right N/O/S A2465402705

€23.95

Free delivery: Nov 12 – 13

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Part no. A2059008218

Telematics Module Mercedes W176 W205 W218 Communication Control Unit A2059008218

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0945094T-2

Volkswagen Golf Gti 5k Rear Lamp Inner Tailgate Right O/S Harness 5K0945094T

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7811157

BMW X3 F25 Engine Wiring Loom Harness Cables 2.0d N47N Diesel 7811157

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1768053

Ford Mondeo Mk4 Rear Door Wiring Loom Harness Cable Left N/S BG9T-14240-GBB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. SPG-17C2

Alpine Coaxial 2-Way Speaker System 6-1/2" 16.5CM SPG-17C2

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118202364-1

Mercedes W211Rear Light Lamp Taillight Left N/S Loom Harness Wire A2118202364

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8606777-4

BMW F30 F31 320iX N20 184HP Engine Control Unit ECU DME 8606777 Manual

€455.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9809931580

Citroen Peugeot Ford Diesel 8-Pin Glow Plug Relay 12V Module 9809931580

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 431951253G

Audi S8 A8 D3 Relay Control Module Unit Purple 381 4 Pins 431951253G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JK21-14G332-AA

Ford Transit Custom Instrument Panel Air Unit Sensor Module JK21-14G332-AA

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 39050-SEF-E450-M1

Honda Accord Mk7 Stereo Radio Head Unit Sat Nav Panel Button 39050-SEF-E450-M1

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906022FD-2

Audi A3 8P 2.0 TDI 170HP CBBB Engine ECU Unit Kit 03L906022FD Key + Ignition

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1751167

Ford Focus Mk3 Keyless Entry Antenna Aerial Amplifier Receiver 8M5T-15K603-LB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X23-8B506-AA

Jaguar XF X250 Air Temperature Sensor Module Unit Wiring Socket 8X23-8B506-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2303709

Ford Transit Connect Mk2 Multifunction Display Screen Radio KT1T-18B955-GC

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6949226-1

2 x BMW E63 E64 DWA Door Alarm System Module Control Unit Set 6949226

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5DK-014334-93

Mercedes C253 S205 X253 Comfort Module Central Gateway Rear A2059007243

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A57FD0

BMW F07 F10 F11 F25 Ignition Key Remote Control Access PCA 868MHZ 135kW 5A57

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H42-10E889-AB

Range Rover L322 Radio Sat Nav Multi Media Display Screen Unit 8H42-10E889-AB

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GJ32-19C299-AB

Land Rover Range Rover L405 10.2" Multimedia Display Screen Unit GJ32-19C299-AB

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0919614B

Audi Q7 4L Navigation Multimedia Control Panel Knob Unit 4L0919614B

€550.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2514406236

Mercedes W164 Steering Wheel Air Module Wire Wiring Cale Harness A2514406236

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GH22-14F041-AA

Land Rover Discovery 4 L319 Junction Fuse Box 3.0 Diesel GH22-14F041-AA

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959392F

Audi Q2 GA A3 8V Door Control Module Unit Front Passenger's Side N/S 5Q0959392F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6931987

BMW 7 Series E65 E66 E67 Control Unit Voice Input System Module 6931987

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0971085D

Audi TT 8J Parking Sensor Wiring Harness Cable PDC Rear Bumper 8J0971085D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2078200159-2

Mercedes W207 Headlight Lamp Light Front Left N/S Cable Wire Harness A2078200159

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8507202-2

BMW 3 Series E90 E91 LCI 318d N47N 143HP ECU Kit DDE 8507202 CAS3 Key Automatic

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7580334

Earth Ground Cable BMW F10 F11 F13 F01 Battery Cable Engine Wiring 7580334

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129004901-1

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129004901

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T-15K868-AF

Ford Transit Custom Mk1 Rear Parking Sensor Wiring Harness Cable BK2T-15K868-AF

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779008511

Door Module Mercedes W177 W247 Rear Left Right N/O/S Control Unit A1779008511

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LK62-9D370-BA

Range Rover Evoque L551 Fuel Pump Control Unit Module ECU LK62-9D370-BA

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. B67824252-1

Mercedes R171 iPod Interface Multimedia Music Connection Module Cable B67824252

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JPLA-14D618-CB

Land Rover Evoque L551 Front Door Control Module ECU Driver Side JPLA-14D618-CB

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T8945095D-2

Audi A5 8T Tail Light Lamp Wiring Plug Socket Rear Left N/S 8T8945095D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1T0035577AD

Volkswagen Touran 1T Aerial Antenna Amplifier Unit Module Left N/S 1T0035577AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7G91-3F880

Ford Mondeo Mk5 Steering Column Lock Control Unit Module 7G91-3F880-KA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5L0971161P

Skoda Yeti 5l Door Electric Wire Wiring Harness Loom Rear Right O/S 5L0971161P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0907064GB

Audi A4 B9 A5 F5 Central Body Control Module BCM Unit ECU 8W0907064GB

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK2T-18C394-BBC

Ford Transit Custom Mk8 Rear Door Wiring Loom Harness Left N/S GK2T-18C394-BBC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV6T-14A067-BB

Ford C-Max Mk2 Fuse Box Battery Terminal Unit Module AV6T-14A067-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0959793P

Audi A4 B8 A5 8T Door Control Unit Module Front Driver's Side 8T0959793P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218230050

Mercedes W221 Centre Console Telephone Keypad Control Unit Module A2218230050

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV1T-15K600-CK

Ford Fiesta Mk7 Body Control Module BCM 1.25 Petrol 1713369 AV1T-15K600-CK

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9277818

Antenna Amplifier BMW F23 Cabrio FM Radio Booster Unit Module 9277818

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7482455

BMW G11 G20 G23 G26 F30 LCI F90 F96 Fuel Pump Control FPC Module Unit 7482455

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2459795

Ford Kuga Mk3 Camera Control Module ECU LJ6T-19H423-AA

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 46806763

Fiat Panda Mk2 Battery Tray Plastic Liner Housing Support 1.1 Petrol 46806763

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2549456

Ford Kuga C482 Anti Theft Alarm Siren 2.5 FHEV Petrol Hybrid LJ6T-19N217-AC

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06E971627B

Audi A4 B7 A6 C6 A8 D3 Fuel Injector Wiring 3.2 FSI Wiring Cable 06E971627B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0035342C

VW Volkswagen Touareg 7L Media Interface Module Control Unit Box 5N0035342C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8576341-6

BMW F20 F21 F30 F31 116d 316d 116HP N47N ECU Kit DDE 8576341 + Key + FEM Manual

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9205477

BMW E82 E88 120i N43 Positive Battery Lead Cable Wiring Petrol 9205477

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EB3T-14B321-EF

Ford Ranger Lim Air Module Control Unit ECU SRS Restraint EB3T-14B321-EF

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK3T-9K499-FBB

Ford Transit Mk8 Engine Bay Under Bonnet Fuse Box Control Unit GK3T-9K499-FBB

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009052200

Windscreen Camera Mercedes W209 W212 W221 Front Control Unit Module A0009052200

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6819652

Map Fuse Box BMW F15 F16 F85 F86 Grouping Diagram Card 6819652

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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