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 A6 C6 Interference Disturbance Suppressor Filter Module 8T0035570

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0035464

Audi A3 S3 8P Audio Amplifier Mount Bracket Holder Right O/S 8P0035464

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9200944

BMW 3 X1 E84 E91 Ultra Sonic Burglar Alarm System Sensor Module 9200944

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0971502A

Audi Q5 8R Battery Fuse Box Terminal Retaining Mount Bracket Holder 8R0971502A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YMM501394A

Range Rover Sport L320 Rear Door Wiring Harness Cable YMM501394A

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5M51-12A650-MB

Ford Focus Mk2 Engine Control Unit 136HP ECU KIT 2.0 TDCI 5M51-12A650-MB

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519007401

Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine Module ECU A6519007401

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14B526-AG

Land Rover Discovery Sport L550 Voltage Quality Module ECU BJ32-14B526-AG

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2115454840

Mercedes E-Class S211 W211 Battery Tray Holder Mounting Bracket A2115454840

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9T-14A631-DD

Ford Mondeo Mk4 Rear Door Wiring Loom Harness Cable Right O/S 6G9T-14A631-DD

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2649000700-5

Mercedes W205 C 200 264915 197HP Engine Control ECU Module A2649000700 Automatic

€246.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. Q10930041-0200

Seat Ibiza 6J Navigation Display 9" Screen Touch Screen Android Q10930041

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3B0035711B

Seat Leon Mk3 5F Hands Free Microphone Module Speaker Wiring Loom 3B0035711B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0971365J

Audi A8 D4 Seat Cable Front Left Right N/O/S Seatbelt Warning Wiring 4H0971365J

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519007500-28

Mercedes C207 E220CDI Engine Unit ECU 170HP 2.1 Diesel Automatic A6519007500 KIT

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H1971035CN

Audi A4 B7 Convertible Front Driver Side Door Wiring Harness 8H1971035CN

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8707752

BMW F20 F32 FEM Control Module Unit ECU 8707752

€203.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0971030Q

Audi Q7 4L Door Wiring Harness Cable Loom Front Passenger Side N/S 4L0971030Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1776538

Ford B-Max Starter Motor 1.0L Petrol SFJA EcoBoost CV6T-11000-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DB39-19H517-AA

Ford Ranger Mk6 Trailer Towing Module Tow Control Unit DB39-19H517-AA

€194.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8621500

BMW F20 F21 F30 LCI Petrol N13 N20 Cable Alternator Starter Base B+ 8621500

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X23-F01590-A

Jaguar XF X250 Engine Bay Fuse Box Cover Lid Trim 8X23-F01590-A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EU5T-14A094-BA

Ford Ranger Mk3 Battery Power Fuse Box Terminal Engine Bay EU5T14A094BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A088E1

BMW F40 Engine Control Unit Module ECU B38A15A 1.5 Petrol 140HP Manual 5A088E1

€132.95

Free delivery: Nov 12 – 13

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Part no. A2661530391-2

Mercedes W245 M266.920 Petrol 95HP Engine Control ECU Kit A0014460340 Automatic

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 897800D011

Toyota Yaris P9 Key Immobiliser Transponder Module Control Unit 89780-0D011

€23.95

Free delivery: Nov 12 – 13

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Part no. J9D3-19C211-MH

Land Rover Discovery Sport L550 Radio Navigation Head Unit Module J9D3-19C211-MH

€284.95

Free delivery: Nov 12 – 13

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Part no. C1BB-10679-BA

Ford Fiesta Mk7 Battery Mount Support Bracket Holder Retainer C1BB-10679-BA

€23.95

Free delivery: Nov 12 – 13

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Part no. 83A971589A

Audi A3 S3 8Y Steering Wheel Air Module Wiring Harness Loom Cable 83A971589A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4159066300

Mercedes W415 Starter Motor Diesel 607951 A4159066300

€47.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 5A4A7B1

BMW G20 G21 LCI Rear Door Wiring Loom Harness Cable Left Right N/O/S 5A4A7B1

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2198200326

Door Module Mercedes C219 Rear Door Right O/S Control Module A2198200326

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 80A035225Q

Audi Q5 Mk2 FY Aerial Antenna Amplifier Module Unit 80A035225Q

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2753031

Mini Wiring Loom Harness Cable Plug Connector Socket Input 2753031

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6928945

BMW X3 Series E83 E83 LCI B Terminal Point Luggage Compartment 6928945

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6821408

High Voltage Cable BMW F45 Mini F60 Harness Wiring 6821408

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959592M

Audi Q2 GA Door Module Control Unit Front Passenger Side 5Q0959592M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1668200075

Mercedes W205 Aerial Antenna Control Unit Keyless Go Entry A1668200075

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. R8D2-14633-EAA

Range Rover Evoque L551 Door Wiring Harness Loom Rear Left N/S R8D2-14633-EAA

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8644475

BMW Mini Cooper F55 F56 F57 Integrated Supply Module Z11 8644475 12638644475

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 284B13867R

Mercedes Citan W415 Renault Kangoo BCM Body Control Module Unit ECU 284B13867R

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KV6T-11000-BC

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

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6H52-18C808-AG

Land Rover Freelander 2 L359 Premium Audio Amplifier Module 6H52-18C808-AG

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9287265

BMW F10 M5 Active Sound Unit Control Module Design Amplifier 9287265

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6842527

BMW G20 Battery Terminal Voltage Distribution Box 400W MID 6842527

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9T-14C507-CB

Ford Mondeo MK4 S-Max MK1 Rear Boot Fuse Box Cover Lid Grey 6G9T-14C507-CB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2198200164-1

Mercedes C219 Rear Lamp Left N/S Tail Light Taillight Loom Harness A2198200164

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3D0919473

Volkswagen Touareg 7L PDC Parking Aid System Display Panel Unit 3D0919473

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9064401241

Mercedes Sprinter W906 Battery Alternator Starter Wiring Harness A9064401241

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2354701

BMW E60 E65 E70 E81 E87 E90 F10 Engine Starter Motor 2354701

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7300268-2

Rear Lamp BMW F01 F02 LCI Saloon Light Side Panel Right O/S Harness Wire 7300268

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KG9T-14631-DHE

Ford Mondeo Mk5 Front Door Wiring Harness Loom Cable Left N/S KG9T-14631-DHE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8516753-1

BMW F01 730d F07 530d N57 245HP Engine Unit ECU Kit DDE 8516753 Automatic

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99661822100

Porsche Boxter 986 Crash Impact Sensor Module 99661822100

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9261095

BMW 7 Series F01 F02 LCI Antenna Aerial Noise Suppression Filter 9261095

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1718200004

Mercedes R171 Wiring Harness Loom Cable Ventilation Driver Side A1718200004

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BATTERY-CABLE

Ford Fiesta Mk7 Positive Battery Terminal Cable Wire Wiring Loom

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DPLA-70718-NR

Land Rover Discovery Sport L550 Telematics Control Module Unit DPLA-70718-NR

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8F0907461

Audi A5 8F Central Convenience Module ECU Mounting Bracket Holder 8F0907461

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H1971029AL

Audi A4 B7 Convertible Front Driver Side Door Wiring Harness Cable 8H1971029AL

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2264438

Ford Kuga C520 Earth Lead Wire Harness Negative Cable GV6T-14324-MDC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907539

Audi A5 S5 8T Dashboard Sunlight Solar Sun Sensor 8K0907539

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8599189

BMW G11 740d B57 xDrive 320HP Engine Control Module ECU DDE 8599189 Automatic

€256.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9353270

BMW G11 G12 Trunk Bracket Holder Audio Boot Amplifier Mounting Mount 9353270

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M0941824AP

Audi Q7 4M Fuse Box Power Distribution Unit Control Module 4M0941824AP

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5M5T-14B192-BA-1

Land Rover Discovery 4 L319 Multi Use Module Relay Black Set 5M5T-14B192-BA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 070903143C

Volkswagen Touareg 7L Alternator Mounting Bracket Carrier Holder 070903143C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8U0907468G

Audi Q3 8U Gateway Interface Control Module Unit ECU 8U0907468G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-14B006-AA

Land Rover Discovery L550 Front Impact Sensor Left Right N/O/S FK72-14B006-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DMH-A240BT

Pioneer DMH-A240BT CD DVD iPhone Bluetooth Audio Player Head Unit Touchscreen

€279.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR015874

Land Rover Discovery 4 Driver's Seat Memory Wiring Loom Harness AH22-14B719-CC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9393951

BMW F07 GT X3 F25 Rear View Camera ECU Control Unit Module 9393951

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2535405429

Mercedes C253 OM656 Diesel Engine Motor Wiring Loom Cable Harness A2535405429

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AW93-14F641-AE

Land Rover Discovery 4 L319 L538 L405 TV Tuner Hybrid Module AW93-14F641-AE

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971369A

Audi A4 B8 Lumbar Support Wire Harness Wiring Cable Front Right O/S 8T0971369A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5E0035842A

Skoda Octavia 5E MMI Multimedia Interface Unit Module Control ECU 5E0035842A

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018GF-1

Volkswagen Scirocco Mk3 2.0 TDI 140HP CFHC Engine ECU Kit BCM 2 Key 03L906018GF

€256.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3W83-2C219-BD

Jaguar XK8 X100 Anti Brake Lock ABS Control System Module Unit 3W83-2C219-BD

€621.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 86120YV010

Toyota Aygo B1 Radio CD Head Unit Control Panel Audio Stereo 86120-YV010

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1S0919275D-SEB

Audi Q3 8U PDC Parking Distance Control Sensor Sepang Blue Pearl Y5Q 1S0919275D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469006710

Radio CD Player Mercedes W176 W246 COMAND Nav Sat Head Unit A2469006710

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8S0907159A

Audi TTS FV Impact Sound Control Unit Module 8S0907159A

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8652443

BMW F45 Wiring Harness Motor Sensor System Module 8652443

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2115460580

Wiring Holder Mercedes W211 Cable Loom Harness Cover Channel A2115460580

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1644400837

Mercedes W164 Parking Sensor Wiring Loom Cable Harness Front PDC A1644400837

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2125400382

Mercedes W212 Cover Fuse Box Trim Panel Lid A2125400382

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7N0959794L

Seat Alhambra 7N Rear Door Control Module Unit ECU Right O/S 7N0959794L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0035061

Audi A5 S5 8T Multimedia Navigation Radio Control Head Unit 4G0035061

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DH22-14B192-BA-1

Range Rover Evoque L538 Relay 4-Pin Unit 12V 20A Set x3 DH22-14B192-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9252010

BMW X5 X6 F15 F16 Rear Seat Heating Switch Button Panel Cover 9252010

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 9G9T-14B534-CC

Ford Mondeo Mk4 Rear Door Control Module Unit Left Right N/O/S 9G9T-14B534-CC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P4971036E

Audi A3 8P Front Door Card Wiring Loom Harness Passenger Side 8P4971036E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5910566C

Porsche Cayenne Turbo 92a Blind Spot Detection Control Unit ECU 7P5910566C

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 11130287

Vauxhall Movano C 4-Pin Relay Unit 12V 50A Omron Black 11130287

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7176068-1

BMW E46 E63 X3 E83 MINI R50 R53 Control Unit Xenon Light 1307329082

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8594487

BMW F45 Mini F56 Positive Battery Alternator Starter Cable Wiring 8594487

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8585269

Mini R55 R56 R57 R60 R61 Engine Wiring Harness Loom Cable 8585269

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2034400033

Mercedes CLC CL203 Wiring Loom Cable Door Front Left Right N/O/S A2034400033

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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