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.

More information

Find it faster

Match to your vehicle

Make

Navigation Head Unit BMW F10 F11 F31 Harman Sat Nav Unit 9290358

€365.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-14D068-BG

Ford Fiesta Mk8 Fuse Relay Box Under Bonnet 1.0 1.5 Petrol H1BT-14D068-BG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005457616

Mercedes R171 VDO Transmission Control Unit Module EGS A0005457616

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4478260000

Mercedes Vito W447 Headlight Turn Indicator Light Socket Plug A4478260000

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695407405

Mercedes W169 Wiring Loom Cable Door Front Left Right N/O/S A1695407405

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9395173

BMW 1 2 3 4 Series F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9395173

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P3035223B

Audi S3 8P Audio Sound System Amplifier Bose 290328

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469052602

Dashboard Panel Mercedes W176 W246 Switch Dynamic Select Start/Stop A2469057902

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8679817

BMW F98 Earth Ground Cable Negative Battery Lead Wiring 8679817

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645400350-1

Mercedes ML W164 Fuse Prefuse Box Jump Start Terminal A1645400350

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0951253

Audi VW Volkswagen Seat Relay 643 Unit Module 4 Pins 8K0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6945147

BMW 5 6 Series E60 E61 E63 Passenger Door Airbag Control Module 6945147

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7807802-1

BMW X5 E70 LCI X6 E71 N57 N57S Cable Alternator Starter Base B Wiring 7807802

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DH22-14B192-EA

Land Rover Discovery Sport L550 Relay 4-Pin Unit 12V 70A Grey DH22-14B192-EA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645403230

Mercedes ML W164 Positive Battery Terminal Cable Lead Wiring A1645403230

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1679003504

Ignition Switch Mercedes W177 Electronic Anti Theft Control Module A1679003504

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6952994

Air Module BMW E60 E63 Control Unit Centre Sensor ECU 6952994

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401900

Mercedes W205 Parking Sensor Wiring Rear Bumper PDC Loom Cable A2055401900

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0035341C

Volkswagen Scirocco Mk3 Multimedia Interface Module Box 5N0035341C 5N0035342B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0906121B

Audi A3 8V 30 TDI DGTE Diesel Fuel Pump Module Control Unit ECU 3Q0906121B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6395407809

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6837359

Air Module BMW F01 LCI F07 F10 F11 F22 F25 Control ECU 6837359

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9264636-1

BMW 1 3 4 F20 F30 F32 1 Driver Side Seat Wiring Loom Electric Harness 9339286

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0907637B

Audi A6 C6 Yaw Module Rotation Rate Acceleration Sensor 8E0907637B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0919390F

Audi A6 C8 Door Panel LED Module Light Unit Rear Right O/S 4K0919390F

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0919283F

Parking Distance Audi A3 8V TT Mk3 Seat Leon MK3 Control Module 5Q0919283F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3M5T-11000-CF

Ford Transit Connect Starter Motor Engine Actuator Diesel 1.6 3M5T-11000-CF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2199001100

Mercedes W219 Head Unit CD Player Navigation COMAND Radio Audio Unit A2199001100

€294.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469005315

Transmission Module Mercedes W176 OM607 Diesel Control Unit A2469005315

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959354A

VW Volkswagen Tiguan AX1 Front Air Module Crash Impact Sensor Unit 5Q0959354A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CV1T-14B531-AG

Ford Fiesta MK7 Door Module Front Driver Side Control Unit CV1T-14B531-AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0919475L

Volkswagen Scirocco Mk3 PDC Parking Sensor Module Control Unit 1K0919475L

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055404913

Mercedes W205 Wiring Cable Harness Center Console Ambient Lightning A2055404913

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937084AE

Audi A3 8V Module BCM Body Control Unit Module ECU 5Q0937084AE

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2128205026

Mercedes W212 Impact Crash Sensor Door Left Right A2128205026

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3D0909601F

VW Volkswagen Touareg 7L Air Module Control Unit ECU SRS 3D0909601F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DV6T-14A073-DG

Ford Focus Mk3 C-Max Mk2 BCM Body Control Module Fuse Box DV6T-14A073-DG

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 141951253B-1

VW Volkswagen Audi Seat Skoda Relay Unit 4 Pins 12V 40A 141951253B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8574091-3

BMW F10 520d N47N 184HP ECU Kit Control Unit DDE 8574091 CAS4 + Key

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0907530Q

Volkswagen Passat B6 CC Gateway Control Module ECU 3C0907530Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907063

Audi A4 B8 Body Control Unit Basic Module BCM 8K0907063

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8507202

BMW E90 E91 LCI 318d N47N 143HP ECU Engine Control Unit DDE 8507202 Manual

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7540686

BMW F20 M135i F30 335i N55 326HP Engine Control Unit ECU DME 7540686 Automatic

€265.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729007003

Seat Module Mercedes W204 W212 Control Unit Front Left Right N/O/S A1729007003

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9263948

BMW E81 E90 LCI Business System Car Infotaiment Computer CIC 9263948

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0907401F-1

Volkswagen Touareg 3.0 TDI BKS 225HP Engine Control Unit ECU Kit 7L0907401F Key

€408.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1S0959651

Volkswagen Touareg 7P Front Impact Crash Sensor Air Module 1S0959651

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0919283E

Audi Q7 4L PDC Parking Distance Sensor Control Module Unit ECU 4L0919283E

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6907357A

Skoda Octavia 5E Front Lamp Headlight Range Control Module Unit ECU 7P6907357A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9459681

Seat Module BMW F20 F30 F32 F33 X1 F48 X5 F15 Front Control Unit ECU 9459681

€118.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6926445

BMW 5 Series E60 E61 LCI Heated Front Seat Control Module 6926445 9182128

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8643741-2

BMW X1 E83 Z4 E89 20i N20 184HP sDrive Engine Control ECU 8643741 Automatic

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2125406250

Mercedes-Benz W212 SAM Fuse Prefuse Box Relay Control Unit A2125406250

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9231178

BMW F22 F30 F80 M3 F32 Radio Antenna Amplifier AM FM 9231178

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6809051

BMW F20 LCI REM Rear Electronic Module Fuse Box Control 6809051

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9381837

BMW X1 F48 Mini F55 F56 Air Module Control Unit ECU 9381837

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059006615

Mercedes W205 Windscreen Rain Sensor Front Control Unit A2059006615

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DV21-12A650-PB

Ford B-Max 1.0 EcoBoost 100HP Engine Control Unit ECU DV21-12A650-PB Manual

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0035186M

Audi TT 8J Radio CD Player Professional Audio Concern Head Unit 8J0035186M

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2099383

Ford Fiesta Mk7 Starter Motor Actuator Petrol Engine 2099383

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BB-10718-BA

Ford Fiesta Mk8 Puma Battery Tray Box Bracket Holding Strap H1BB-10718-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1F1-12A650-SA

Ford Focus Mk3 1.5 TDCI XWDE 120HP Engine Control Unit ECU F1F1-12A650-SA Manual

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907637A

Audi A5 8T Acceleration Yaw Rate Sensor Module Control Unit ECU 8K0907637A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0959792E

Skoda Superb Mk2 B6 Door Control Module ECU Front Left N/S 8X0959792E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06H911021D

Audi A4 B8 Petrol Engine Starter Motor Actuator 1.8 2.0 TFSI 06H911021D

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669063801

Mercedes ML W166 Relay Box Engine Compartment Relay Module A1669063801

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0919475B

Audi A5 8T Park Parking Assist PDC Distance Control Unit Module 8K0919475B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3455305

Mini R57 R57N R58 R59 DWA-Alarm System Relay ECU 3455305 65753455305

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6954298

BMW E81 E87 E90 E91 Adapter Lead Medium Range Loud Speakers 6954298

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8507136

BMW E90 LCI 330d N57 245HP ECU Engine Control Unit DME Automatic Gearbox

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W6035412A

Audi S5 F5 Trunk Bass Loudspeaker Speaker Rear Center 8W6035412A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2622892

BMW 1 2 Series F20 F21 F22 F23 Control Unit Module Active Sound Design 2622892

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779005509

Door Module Mercedes C118 W177 H243 Rear Left N/S Door Control A1779005509

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2095451101

Fuse Box Mercedes W203 W209 Front Relay Control Unit Module SAM A2095451101

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0959792B

Audi Q7 4L Door Control Unit Module ECU Passenger Side 4L0959792B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9286953

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 9286953

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9285504-1

BMW X5 F15 X6 F16 B + Battery Power Distributor 9285504

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0971035AM

Audi Q5 8R Door Wiring Loom Harness Electrical Cable Driver's Side 8R0971035AM

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DK62-14B687-DD

Land Rover Range Rover L405 Seat Wire Loom Harness Rear Left N/S DK62-14B687-DD

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1648205389

Mercedes ML W164 Aerial Antenna Amplifier Unit Module A1648205389

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2115457001

Mercedes C219 Fuse Box Control Unit SAM Module A2115457001

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2124405533

Mercedes W212 Wiring Loom Cable Door Front Left Right N/O/S A2124405533

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009051811

Mercedes W206 Negative Batery Cable Wiring Harness Minus Pole A0009051811

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2054400534

Mercedes C205 Bumper PDC Wiring Loom Rear Parking Sensor A2054400534

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 83A907428C

Audi RSQ3 F3 Reversing Camera Control Unit Module 83A907428C

€360.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6971694F

VW Volkswagen Touareg 7P Door Wiring Harness Rear Left Right N/O/S 7P6971694F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055407412

Mercedes W205 Alternator Ground Cable Wiring Loom A2055407412

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775402500

Mercedes W177 W247 Battery Cable Negative Lead Terminal Harness A1775402500

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2475451000

Mercedes W177 W247 Battery Bracket Battery Mount Holder Trim A2475451000

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9T-14B192-BA-1

Ford Galaxy Mondeo Transit Relay 4-Pin Black FoMoCo Unit SET X2 6G9T-14B192-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775405329

Mercedes W177 Positive Battery Cable Wiring A1775405329

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK21-134054-AG-2

Ford Transit Custom Headlamp Headlight Wiring Harness Cable Plug BK21-134054-AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV6N-19G481-AL

Ford Focus Mk3 Keyless Entry Body Control Module ECU AV6N-19G481-AL

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T-14301-AC-1

Ford Transit Mk8 Negative Battery Terminal Cable BK2T-14301-AC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV61-12A650-BNA

Ford C-Max Mk2 Engine Control ECU 1.6 TDCi T1DA 115HP AV61-12A650-BNA Manual

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9231174

BMW 3 4 F30 F32 Touring Amplifier Rear Window Antenna Diversity 9231174

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2054403136

Mercedes C300h W205 Prefuse Box Cable Harness Loom Cable A2054403136

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8576333-8

BMW F20 F30 F32 xDrive N47N 163HP Engine Control ECU Kit DDE 8576333 Manual

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

...

Showing 2575-2673 of 22939 products