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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Audi TT 8J 2.0TDI 170HP CBBB Quattro Engine Control ECU 03L906022RC Manual

€142.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2118210197

Mercedes E-Class W211 Rear Door Wiring Loom Harness Rubber Grommet A2118210197

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6937668

BMW X5 Series E53 Fuse Box Label Trim Cover Panel Sticker 6937668

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. KK72-12C520-FBC-1

Land Rover Discovery L550 2.0 204DT 180HP Engine ECU KK72-12C520-FBC Automatic

€222.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2T1T-14A280-CG

Ford Transit Connect 1.8 TDCi Battery Positive Cable Clamp Wiring 2T1T14A280CG

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 04L911024A

Audi A4 B9 2.0 TDI DETA Engine Starter Motor Actuator Starter 04L911024A

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009056001

Battery Cable Mercedes W213 S213 Negative Lead Wiring Harness A0009056001

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1765405508

Mercedes-Benz A-Class W176 Front Door Cable Wiring Loom Harness A1765405508

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GK3T14401EWB

Ford Transit Mk8 VI Fuse Relay Box Unit 2.0 Diesel Engine GK3T14401EWB

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9648588880

Peugeot 206 2.0HDI 90HP DW10TD Engine Control Unit ECU 9664843780 Manual

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2959574-2

BMW F36 Gran Coupe Headlight Height Level Sensor Rear Right O/S 2959574

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. XUC000072A

Land Rover Discovery 3 Aerial Antenna Amplifier Module Unit ECU XUC000072A

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0955557C

Audi A4 B8 Crash Impact Sensor Unit Air Module 8K0955557C

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6807633

Control Unit BMW F01 F07 F10 F11 F25 Air Module ECU Unit Continental 6807633

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. N8D2-14N178-AA

Land Rover Discovery Sport L550 Hybrid Cooling Fan Link Lead N8D2-14N178-AA

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0959655E

Audi A6 C6 SRS Crash Air Module Safety ECU Unit Control 4F0959655E

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. NNW500440

Range Rover L322 Four Wheel Drive Transfer Box Module NNW500440

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6Q0909605AJ

VW Volkswagen Caddy 2K Air Module Control Unit Sensor ECU 6Q0909605AJ

€208.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P5971677

Porsche Cayenne 92A Crash Impact Module Sensor Wiring Harness Cable 7P5971677

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6989713-1

BMW E88 E89 E93 Convertible Cabrio DWA-Alarm System Module Set Of 2 6989713

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2048210651

Mercedes W204 Air Module Impact Crash Sensor Door A2048210651

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K5907551D-1

Audi S5 8T 3.0 TFSI CGWC 333HP Quattro Engine ECU Kit Ignition + Key 8K5907551D

€336.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. AM5T-14D212-EB

Ford B-Max Fiesta Mk7 Focus Mk3 Bluetooth Control Unit Module AM5T-14D212-ED

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0959793B

Audi A5 8T Sportback Front Door Module Control Unit Driver's Side 8T0959793B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5CU971104

VW Volkswagen Jetta A6 Mk6 Rear Bumper PDC Sensors Wiring Loom Harness 5CU971104

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2056186100

Mercedes W205 W238 Rear Battery Holder Bracket Mount Strap Clamp A2056186100

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7394466

BMW F10 F11 X5 F15 LCI F32 F33 Adblue Module Control Unit ECU SCR 7394466

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6G9N-10757-AF

Range Rover Evoque L538 L550 Battery Tray Housing Box Panel 6G9N10757AF

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2465406432

Battery Cable Mercedes W176 W246 Negative Lead Wiring Harness A2465406432

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6799576

BMW F10 F11 ICM Control Module Unit 6799576

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2049060405

Mercedes W204 Front Fuse Board Box Relay Unit Case A2049060405

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8R0035464A

Audi Q5 8R Amplifier AMP Booster Mount Bracket 8R0035464A

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9311296

Radio Player BMW F10 F11 F20 F21 F25 F30 F31 Alpine CD Champ 2 Head Unit 9311296

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1698202661

Mercedes W245 Headlight Headlamp Lamp Light Wiring Front Right O/S A1698202661

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7E0971158A

Volkswagen Transporter T6 Positive Plus Battery Cable 7E0971158A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5WA906121

VW Volkswagen Golf Mk8 GTI CD1 4 Motion Fuel Pump Control Unit Module 5WA906121

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2115452647

Bracket Mount Mercedes W211 W219 Control Unit Module SAM Holder A2115452647

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6832776

Mini Countryman F60 High Voltage Cable Cover Hybrid HV Protection Case 6832776

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0937084CN

Skoda Superb 3V BCM Body Control Module ECU 5Q0937084CN

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8507912

BMW F30 F31 Engine Wiring Loom N47N Harness Automatic Gearbox 7549282

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9218381-1

BMW F10 F20 F30 Steering Wheel Module Electronics Control Unit 9209427

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8V41-13404-AH-2

Ford Kuga C394 Rear Tail Light Lamp Cable Wire Outer Right O/S 8V41-13404-AH

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8733503

BMW F30 Fuse Box Front Body Control Module ECU BCM Unit 8733503

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8516122

Battery Cable BMW X5 F15 X6 F16 Alternator Starter Wiring Loom Harness 8516122

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5H2Z-14A686-BA-1

Land Rover Discovery 3 L319 Crash Impact Sensor Left Right N/O/S 5H2Z-14A686-BA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GHCT-14A624-AHA

Land Rover Discovery Sport L550 Wire Loom Harness Connector GHCT-14A624-AHA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-19C164-ZE

Land Rover Discovery Sport L550 Audio Sound Amplifier Module FK72-19C164-ZE

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0907280A

Audi A6 C6 On Board Onboard Supply Module Control Unit ECU 4F0907280A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0971068G

Audi A3 8V VW Golf AU Jetta BU Exhaust Flap Wiring Loom Harness Cable 5Q0971068G

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6944663

BMW E90 Front Seat Wiring Harness Cable Loom 6944663

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03G906021AQ

Volkswagen Caddy 2K 1.9 TDI BLS 105HP Engine Control Unit ECU 03G906021AQ Manual

€70.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0907556C

Volkswagen Tiguan Mk2 Arteon 360° Camera Control Unit Module 5Q0907556C

€294.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5NA980611A

Volkswagen Golf 8 CD1 Wireless Phone Charging Center Console Module 5NA980611A

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1480790

Fuse Relay Mini Cooper One R50 R53 Electrical Box Housing With Cover 148079

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5F4971029DF

Seat Leon Mk3 5F Door Wiring Loom Cable Front Driver Side O/S 5F4971029DF

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2K0971121AK

Volkswagen Caddy Mk2 Front Door Wiring Harness Cable Passenger Side 2K0971121AK

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5QF959351

Seat Ibiza Mk5 Crash Impact Sensor Accelerator Sensor Control Unit 5QF959351

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9126106

BMW Mini R55 R56 R57 Cabrio Adapter Lead Outside Temperature Sensor 9126106

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5G0035820A

Volkswagen Golf Mk7 Infotainment Multimedia Head Unit 5G0035820A

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6959987

BMW 7 Series E65 E66 Windscreen Wiper Switch Column Stalk 61316959987 6959987

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009050410

Mercedes W176 W205 C207 W212 Front Radar Distance Sensor Unit Module A0009050410

€142.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G0907697J

Audi A7 4G A6 C7 Daytime Running Lights DRL LED Headlight Module Unit 4G0907697J

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4K1907594CB

Audi S3 8Y VW Golf Mk8 Sun Roof Module Control Unit ECU 4K1907594CB

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2216890614

Mercedes W221 PDC Distance Control Holder Bracket A2216890614

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. EB3T-14603-C

Ford Ranger Mk3 Positive Terminal HV Battery Lead Cable Wire Harness EB3T14603C

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-14301-AB

Land Rover Discovery L550 Negative Battery Cable Lead Wire FK72-14301-AB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L5035225B

Porsche Cayenne 9PA Radio Aerial Antenna Amplifier Unit Rear Left N/S 7L5035225B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GTC055R

Mercedes W207 W212 Display Screen Android Navigation Infotainment Unit GTC055R

€265.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9379832

BMW X3 F25 X4 F26 Door Wiring Loom Harness Cable Driver's Side 9379820

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2115452601

Mercedes ML W164 Prefuse Fuse Distribution Box Front A2115452601

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P6945207-2

VW Touareg 7P Rear Tail Light Lamp Wiring Harness Cable Plug Right O/S 7P6945207

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0061514501-2

Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8639595-1

BMW F30 F31 F32 320i 420i N20 xDrive ECU Engine Control Unit DME 8639595 Manual

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7649755

Mini Countryman F60 Engine Fuse Box Harness Cable Guide B48M 2017-2024 7649755

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8U0971035L

Audi Q3 8U Door Loom Wiring Harness Cable Front Right O/S 8U0971035L

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0048273745

iPod Interface Mercedes W204 W207 W212 Module Control Unit ECU A0048273745

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4L0910441B-1

Audi Q7 4L Rear Reversing Camera View Module Control Unit ECU 4L0910441B

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. HC345H297AA

Ford Transit Mk8 2.0 EcoBlue AdBlue Module Control Unit HC34-5H297-AA

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. YIE500090

Land Rover Discovery 3 L319 Sat Nav Radio Multimedia Display Screen YIE500090

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8506374-6

BMW E60 E87 E90 120d 177 HP N47 ECU Engine Control Unit DDE 8506374 Manual

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1669005811

Door Module Mercedes W176 W246 Front Right O/S Control Unit Module A1669005811

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6927572

BMW X3 E83 Z4 E85 Wiring Seat Occupancy Cable 6927572

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GHCT-14A624-AJA

Land Rover Discovery Sport L550 Wire Loom Harness Connector GHCT-14A624-AJA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-14F041-AB

Land Rover Discovery Sport L550 Fuse Box Relay Module 2.2 Diesel FK72-14F041-AB

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8506666-5

Mini One R56 LCI 90HP N47N Diesel Engine ECU Control Unit DDE 8506666 Manual

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7N0959792J

VW Volkswagen Sharan 7N Passenger's Side Door ECU Module Control Unit 7N0959792F

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7PP919193AF

Porsche Cayenne Turbo 92a Radio CD Player Digital Display Unit 7PP919193AF

€550.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5B61812

BMW X1 U11 GPS Navigation Audio Radio Infotainment Head Unit Control 5B61812

€522.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P0915181A

Porsche Cayenne 92A Battery Negative Ground Cable Wiring Earth Line 7P0915181A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469005413-1

Mercedes C117 Head Unit Radio Player Control Module Becker A2469005413

€379.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9339339

BMW 1 3 F20 F21 F30 F31 Driver Side Seat Wiring Loom Cable Harness 9339339

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02Z911024L

VW Volkswagen Golf Mk7 1.6 TDI CLHA Diesel Engine Starter Motor 02Z911024L

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0971641E

Audi A8 D4 Centre Console Wiring Loom Cable Harness 4H0971641E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6970908

BMW E65 E66 Sensor Front Right Door Airbag O/S 6970908

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BENZB2007005

Mercedes W169 W245 Hizpo Head Unit Navigation Multimedia Screen 7" GPS Android

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9225014-1

BMW F23 F30 Distributor External Ignition Base Control Unit Module 9225014

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8E0907559H

Audi A4 B7 3.2 FSI Quattro AUK 255HP Engine Control Unit ECU 8E0907559H Manual

€208.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W1959592

Audi Q5 8R Door Module Front Left N/S Control Unit ECU Controller 8W1959592

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6809053

BMW F20 F22 F30 Rear Electronic Module REM Fuse Box Control Unit V5 ECU 6809053

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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