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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Mini Cooper R56 Hands-free Electronics Charging MULF2 9166869

€85.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8649179

BMW X5 F15 Positive Wiring Harness Cable Battery 8649179

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009009114

Mercedes W205 Air Conditioning Climate Control Module ECU A0009009114

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AVH-X8700BT

Mercedes W639 Pioneer CarPlay Radio Stereo Multimedia Head Unit AVH-X8700BT

€279.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. K8D2-189E87-AA

Range Rover Evoque L551 Auxiliary Heater Control Unit Bracket K8D2-189E87-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2465406809

Mercedes W176 W246 Wiring Loom Cable Door Rear Left Right N/O/S A2465406809

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 02T911024K

Seat Ibiza 6J VW Volkswagen Polo 6R Skoda Fabia II Starter Motor 02T911024K

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P5941591AJ

Volkswagen Golf Mk7 5G Headlight Ballast Module Left Right N/O/S 7P5941591AJ

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4H0959795P

VW Touareg 7P Rear Door Module Control Unit Left Right N/O/S 4H0959795P

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6939890

BMW E87 E81 E92 Relay Plug Control Module Unit Wiring 6939890

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. DT1T-15K601-AC

Ford Transit Connect Mk2 Button Remote Flip Key Fob 433MHz DT1T-15K601-AC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T0035225J

Audi A5 8T Antenna Aerial Amplifier Module Control Unit 8T0035225J

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8J0971035J

Audi TT 8J Driver's Side Door Card Wiring Loom Harness Cable 8J0971035H

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2056105402

Mercedes W205 Battery Recess Trunk Floor Battery Box Base Plate A2056105402

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HK83-14D620-BB

Land Rover Discovery L550 Door Module Control Unit Rear Right O/S HK83-14D620-BB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C5971243

Volkswagen Passat CC Negative Battery Terminal Cable 3C5971243

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9230432

BMW X5 E70 Footwell Light Control Module Unit Lear FRM3R VDM 9230432

€180.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L6971120

Volkswagen Touareg 7L Front Door Wiring Loom Harness Passenger's Side 7L6971120

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03P906021AB-2

Seat Ibiza 6J 1.2 TDI CFWA 75 HP Engine Unit Module ECU BCM Manual 03P906021AB

€165.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0035842B

Skoda Superb 3V Rapid NH Octavia 5E Radio Head Unit CD Media Stereo 5Q0035842B

€151.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. YWC500422

Land Rover Range Rover L322 Navigation Control Module Unit ECU Audio YWC500422

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HPLA-14N144-AD

Range Rover Sport L494 Positive Plus Battery Wiring Cable HPLA-14N144-AD

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6938213

BMW E90 LCI Door Wiring Loom Wire Cable Harness Front Right O/S 6938213

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. GK21-12A650-CA-2

Ford Transit Custom 2.0 YMF6 130HP Engine ECU Kit GK21-12A650-CA Manual

€569.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T8971687J

Audi A5 S5 8T Door Wiring Loom Harness Wire Cable Rear Left N/S 8T8971687J

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7PP035620BK

Porsche Cayenne 92A Vehicle Tracking Control Unit Module 7PP035620BK

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 702500

Citroen Relay Peugeot Boxer III Iveco Daily Relay MOPAR 12V 30A 702500

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2045402610

Mercedes W204 Cable Harness Rear Door Panel Card Wiring Loom A2045402610

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009059300-CVB1

Mercedes W205 W212 W246 Parking Distance Sensor Set x2 Cavansite Blue - 890

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2059064505-2

Mercedes S205 Estate Rear Headlight Wiring Harness Cable Right O/S A2059064505

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7300271-2

BMW F01 Rear Tail Light Wiring Harness Cable Inner Left N/S 7300271

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2E0945096-2

Volkswagen Crafter 35 Rear Tail Light Wiring Harness Cable Right O/S 2E0945096

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9477151-2

Mini Countryman F60 Rear Tail Light Lamp Wiring Harness Cable Left N/S 9477151

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2118702926

Mercedes W211 C219 Front Windscreen Rain And Light Sensor Rain-Light A2118702926

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9878327

Air Conditioning Module BMW G11 G20 G21 G30 Control Unit ECU 9878327

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9805533-1

Mini R60 Rear PDC Parking Sensor Royal Grey Metallic - A48 9805533 SET x2

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9257426

Fuse Box Grouping BMW F10 F11 Fuse Placement Map Card Diagram 9257426

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8P0907115K-1

Audi A3 8P 2.0 TFSI BWA 200HP Engine Control Module ECU 8P0907115K Automatic

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6J0035342E

Seat Altea 5P1 Media-IN Socket Multimedia Interface Module 5P0035341G

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9381113

Air Con Module BMW F20 F30 F31 Mini F55 F56 Air Conditioning A/C Unit 9381113

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2539059800

Mercedes W205 Lid Boot Trunk Tailgate Smart Opener Control Module A2539059800

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2479006309

Mercedes C118 W177 W247 Dashboard Display Multi Screen Panel A2479006309

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. JX63-18K891-AA

Land Rover Discovery Sport L550 Aerial Antenna Radio Isolator JX63-18K891-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6P0035225

Seat Ibiza Mk4 Keyless Entry Amplifier Aerial Antenna Module Unit 6P0035225

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T8971030AM

Audi A5 8T Front Door Wiring Harness Loom Cable Passenger's Side 8T8971030AM

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2205400382

Mercedes CL S Class C215 W220 Fuse Box Unit Front Right O/S Cover A2205400382

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4K0971226

Audi A6 C8 Positive Plus + Wiring Loom Cable Lead 4K0971226

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9231283-IBB

PDC Parking Sensor BMW X5 E70 F10 Ultrasonic Sensor Imperial Blue A899231283

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. LR014114

Range Rover L405 Headlight Left Right N/O/S Ballast Control Unit AH22-13C170-AA

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 2Q0971537AA

Seat Arona Fr KJ7 Earth Line Alternator Negative Battery Cable 2Q0971537AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 504092575

Iveco Daily 3 Electrical Wire Earth Cable Battery Power Wiring 504092575

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T8035225D

Audi A5 8T Audio Radio Aerial Amplifier Control Unit 8T8035225D

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0971499

Audi Q3 F3 VW Golf Mk7 Automatic Gearbox Wiring Loom Harness Cable 5Q0971499

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0045454140

Mercedes ML W164 W251 Door Wiring Joint Protective Cap Bracket

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8674261

Mini Cooper One F56 B38 1.5 102HP Engine Control ECU DME Kit 8674261 Manual

€165.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8570659

Wiring BMW X3 F25 N47N Engine Automatic Gearbox Module Wiring Harness 8570659

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8J0971349BF

Audi TT Mk2 8J Alternator Charging Wire Cable 1.8 2.0 TFSI Petrol 8J0971349BF

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469005010

Mercedes W176 W246 Parktronic Parking Control Unit Module ECU A2469005010

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1775403742

Mercedes W177 Interior Roof Lining Wiring Loom Harness Cable Wire A1775403742

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. M8D2-14B673-AC

Range Rover Evoque L551 Tailgate Hands Free Control Module Unit M8D2-14B673-AC

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3Q0959354A

Seat Leon Mk3 Door Crash Impact Sensor Front Left Right N/O/S 3Q0959354A

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5J6971161BA

Skoda Fabia Mk2 5J Rear Door Wiring Loom Harness Cable Right O/S 5J6971161BA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9878658

BMW F20 F30 F31 LCI Mini F55 F56 Compensator LTE UK Control Unit Module 9878658

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9455040

BMW G30 530e G20 330e B48X Hybrid CSC Wiring Harness Electrical Loom 9455040

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8058634

Engine Wiring BMW X3 M F97 X4 M F98 Loom Harness Ignition Module 8058634

€237.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7387549-2

BMW F32 Bi-Xenon Headlight Lamp Light AKL Wiring Cable Front Left N/S 7387549

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6F2971120P

Seat Ibiza Mk5 FR Front Door Wiring Harness Loom Wire Driver's Side 6F2971120P

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. M8D2-14N030-AA

Range Rover Evoque L551 Rear Fuse Box Relay Control Unit Module M8D2-14N030-AA

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2218201875

Mercedes W221 Aerial Antenna Control Unit Keyless Go Entry Module A2218201875

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0971250AL

Audi A3 8P Negative Battery Terminal Cable Wiring Battery Wire 1K0971250AL

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9426353

BMW G20 330e High Voltage Charging Cable Plug In Hybrid 9426353

€51.95

Free delivery: Sep 11 – 15

If paid before 14:00

Part no. A2118210197

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

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2208200475

Mercedes W220 Rear Door Keyless Entry Antenna Right O/S Side A2208200475

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9312765

BMW F01 F06 F10 Junction Box Electronic Control Unit 9312765

€104.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1669003208

Mercedes ML W166 SAM Control Unit Rear Fuse Module A1669003208

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L906018BP

Skoda Yeti Mk1 2.0 TDI 110HP CFHA Engine Control Unit ECU Kit 03L906018HJ Manual

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CX23-18K891-AB

Land Rover Discovery Sport L550 Aerial Antenna Amplifier Unit CX23-18K891-AB

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 0AM911023B

Volkswagen Scirocco Mk3 Starter Motor DSG Gearbox 1.4 TSI CAVD 0AM911023B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6913363

BMW E65 Glovebox Glove Box Dash Storage Wiring Harness Cable 6913363

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 99761826500

Porsche Cayman 987C Tilt Alarm Control Unit Module 99761826500

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9325552

BMW F06 Gran Coupe F12 F13 Parking Brake Wiring Loom Harness Cable 9325552

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2649001200

Mercedes W177 A35 AMG 306HP M260.920 4-Matic Engine ECU Control Unit A2649001200

€227.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9274276

BMW F07 Gran Tourismo Headlight Footwell Light Control Module FRMIII 9274276

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4N0035751

Audi A6 C8 Engine Sound Control Unit Module 4N0035751

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2129005614-2

Mercedes A207 W212 W218 Radio Head Unit Navi CD Player Navigation A2129005614

€203.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8617709

BMW Mini Cooper F55 F56 Wiring Harness Motor Sensorsystem Module 8617709

€108.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T0959795J

Audi A5 8T Rear Door Module Control Unit Module ECU Left Right N/O/S 8T0959795J

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5C0959655D

Volkswagen Golf MK6 Air Module Control Unit ECU 5C0959655D

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1K0915181F

Audi A3 8P Cabriolet Negative Battery Terminal Cable Lead Wiring 1K0915181F

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 93BG-14N089-C1B

Range Rover Sport L320 Glow Plug Relay 12V 70A 2.7 TDV6 93BG-14N089-C1B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3M5T-14A076-AC

Ford Focus Mk2 Under Hood Bonnet Fuse Box Cover Lid Trim Panel 3M5T-14A076-AC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5A0C047

BMW G20 G21 Front Door Wiring Loom Harness Cable Driver's Side 5A0C047

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6949382

BMW E65 E66 Rear Door Wiring Harness Loom Cable 6949382

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7PP919148A

Porsche Cayman 987 Cayenne 92A TV Tuner Reveiver ECU Control Module 7PP919148A

€612.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7PP959795T

Porsche Cayenne 92A Rear Door Control Module ECU Left Right N/O/S 7PP959795T

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9238195

Fuse Box Grouping BMW F10 F11 F12 Fuse Placement Map Card Diagram 9238195

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1475933

Ford Transit Connect 1.8 TDCI Power Distribution Fuse Box Cover 7T1T-14A076-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2139002817

Mercedes W177 W205 C257 Radar Sensor Front Control Unit Module A2139002817

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5F4971036M

Seat Leon Mk3 5F Door Wiring Loom Harness Front Passenger Side 5F4971036M

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

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