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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Ford C-Max Mk2 Focus Mk3 Parking Aid PDC Sensor Control Module F1ET-15K866-AJ

€37.95

Free delivery: Nov 12 – 13

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Smart Fortwo C451 EPS Control Unit Power Steering ECU Module A4519003200

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4X43-14B321-BF

Jaguar X-Type X400 Air Control Module Unit ECU Controller 4X43-14B321-BF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Mercedes W205 Door Wiring Harness Loom Cable Front Driver's Side A2055408709

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9873545

PDC Module BMW F40 G20 G21 Parking Assistant Control Unit Module ECU 9873545

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X23-17D547-AE

Land Rover Discovery 4 L319 Windscreen Rain Sensor Unit Module 8X23-17D547-AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 141951253B-5

Porsche Carrera 996 Relay Number 53 Unit Module 4 Pins Set X3 141951253B-5

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079911023D

Audi A5 8T 2.0 TFSI Starter Motor Engine 079911023D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7519401

BMW 5 Series E60 E61 Positive Battery Starter Alternator Wire Cable 7519401

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 83A971104AP

Audi Q3 RSQ3 F3 Rear PDC Parking Sensors Wiring Loom Harness 83A971104AP

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4N0906093D

Audi Q3 F3 Fuel Pump Control Module ECU 2.5 Petrol DNWA 4N0906093D

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. XQD000230PMA

Land Rover Freelander L314 Sat Nav Head Unit Navigation System XQD000230PMA

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7570488

Mini Cooper One R50 R52 R53 W10 1.6 Petrol Engine Starter Motor 7570488

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AM2T-14D202-BA

Ford Galaxy Bluetooth Voice Control Wire Loom Cable Harness AM2T-14D202-BA

€28.95

Free delivery: Nov 12 – 13

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Part no. 2260730

Ford Transit Connect Fiesta Mk7 Focus Mk3 Alternator 1.5 Diesel AV6N-10300-GE

€42.95

Free delivery: Nov 12 – 13

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Part no. 8377240-1

BMW F10 F11 Light in Trunk Lid Right O/S Rear Lamp Plug Socket Wiring 8377240

€23.95

Free delivery: Nov 12 – 13

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Part no. 5M5T-14B192-EA

Ford Transit Custom Grey Relay 12V 70A 4 Pin ++165271F 5M5T-14B192-EA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 83A945091B-1

Audi Q3 RSQ3 F3 Rear Tail Light Wiring Cable Plug Outer Left N/S 83A945091B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0971615B

Audi TT TTRS 8J Front Gearbox Wiring Harness Cable Guide Left N/S 8J0971615B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7PP907279CF

Porsche 718 Boxster 982 Body Control Module BCM ECU 7PP907279CF

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0959351B

Volkswagen Tiguan 5N Impact Crash Sensor Rear Left Right N/O/S Set 5N0959351B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0038208426

Crash Sensor Mercedes ML W164 W221 Front Rear Impact Airbag Unit A0038208426

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. MK72-14B673-AB

Land Rover Discovery Sport L550 Tailgate Control Module ECU MK72-14B673-AB

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9060034099

Mercedes-Benz Sprinter W906 Front Right O/S Door Wiring Loom Harness A9060005999

€23.95

Free delivery: Nov 12 – 13

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Part no. AV1T-14A631-AAD

Ford B-Max Front Door Wiring Cable Harness Left Right N/O/S AV1T-14A631-AAD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JT76-14K012C-NES

Ford Transit Connect Fuse Relay Box Panel Cover Trim Mount JT76-14K012C-NES

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DV6T-14A073-HF

Ford Focus Mk3 Kuga Mk2 BCM Fuse Box Body Control Module DV6T-14A073-HF

€118.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6823589

BMW F10 Xenon Footwell Light Module Control Unit ECU FRM III 9126314

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH22-14D617-AC

Range Rover Sport L320 Door Control Module Unit Front Passenger Side AH22-14

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK52-627A72-AA

Range Rover Evoque L538 Multifunctional Seat Control Switch GK52-627A72-AA

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139068701-2

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Control Unit A2139068701

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0907376G

Audi A3 S3 8V Suspension Damping Control Unit Module 8V0907376G

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7627520-2

Mini R55 R56 LCI R60 Cooper N16 122HP Engine Control ECU Kit DME 7627520 Manual

€213.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W6945092N-1

Audi A5 F5 Rear Outer Taillight Lamp Wiring Loom Cable Right O/S 8W6945092N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DG9T-14B533-CF

Ford Mondeo Mk5 Front Door Control Unit Module Passenger Side DG9T-14B533-CF

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8582279

BMW F30 320d ed Diesel N47N 184HP Engine Control Unit ECU DDE 8582279

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M5T-18812-EAC

Ford Focus Mk2 Antenna Aerial Wiring Harness Adapter 4M5T-18812-EAC

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V41-13A603-AD-2

Ford Kuga MK1 Rear Tail Light Inner Left N/S Cable Wire Harness 8V41-13A603-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045401307

Mercedes W204 Centre Console Lightning Dashboard Cable Wiring A2045401307

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. N9D3-14E159-AF

Land Range Rover Velar L560 Evoque L551 Air ECU Control Module N9D3-14E159-AF

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1665401913

Mercedes W166 GLE Heater Booster PTC Wiring Harness Loom Cable A1665401913

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906022JM

Audi A4 B8 2.0 TDI 143HP CAGA Diesel Engine Control Unit ECU 03L906022JM

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9247481

BMW X3 F25 Control Module CAS Unit ECU 20dX Diesel N47N 9247481

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906021PD-1

Volkswagen Caddy 1.9 TDI BLS 105HP Engine ECU Kit 03G906021PD BCM + Key Manual

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C0035195C

Volkswagen Golf Mk5 Jetta Passat B6 Radio CD Player MP3 Unit 3C0035195C

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9380933

BMW F45 Front Door Wiring Driver's Door Cable Wiring Loom Harness 9380933

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1639800164

Mercedes W163 Rear Bench Backrest Gas Strut Right O/S Side A1639800164

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G5971035AH

Audi A6 C7 Front Door Wiring Harness Loom Cable Driver Side O/S 4G5971035AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8D0951253-1

Audi A4 B6 B7 B8 Q7 4L A6 C7 A8 D4 Multi Use Relay Unit Module 4 Pins 8D0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 057911023EX

Audi Q7 4L Engine Starter Motor Actuator Starter 057911023EX

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0919275-NBL

Volkswagen Touran 1T PDC Parking Sensor 4H0919275 Night Blue Metallic - H5X

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. S620

Juice S620 6.5" 17cm Coaxial Car Door Parcel Shelf 300W Speaker Pair Set

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3449686

Mini Cooper R55 R56 R57 Passive Go Module Control Unit 3449686

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P7945093-2

Audi A3 8P Convertible Rear Inner Tail Light Lamp Wiring Left N/S 8P7945093

€32.95

Free delivery: Nov 12 – 13

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Part no. 7P5971114B

Porsche Cayenne 92A Crash Impact Sensor Fanfare Wiring Harness Cable 7P5971114B

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06F903023HX

Volkswagen Golf Mk5 2.0 TFSI Petrol Alternator Generator 06F903023HX

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KK2T-15K868-CBC

Ford Transit Custom Mk8 Rear Bumper Parking Sensor Wiring Loom KK2T-15K868-CBC

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018JR

Audi A4 B8 2.0 TDI CJCB 136HP Engine Control Unit Module ECU 03L906018JR Manual

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-14B321-AH

Ford Fiesta Mk8 Air Control Unit Module ECU H1BT-14B321-AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DG9T-14B534-BD

Ford Mondeo Mk5 Door Control Module Rear Left Right N/O/S DG9T-14B534-BD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6824128

BMW F45 Mini F60 Hybrid High Voltage Cable Harnes 6824128

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6924560

Xenon Light Module BMW E60 E61 E63 E66 Headlight Control Module Unit ECU 6924560

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0035420219-3

Mercedes W639 W906 Relay 5-Pin Control Unit 12A Blue A0035420219

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7G9T-14B534-BC

Land Rover Freelander 2 L359 Rear Door Module Left Right N/O/S 7G9T-14B534-BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95861200811

Porsche Cayenne S 92a Power Electronics Cable Wire Harness Loom 95861200811

€759.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A61AA3

BMW X1 U11 Radio Remote Control Car Key Wireless BDC ECE ROW 5A61AA3

€7,599.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0937503A

Audi TT 8J A3 8P Volkswagen Golf Mk6 Octavia Relay Fuse Box Panel 1K0937503A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135400200

Mercedes W205 W213 W238 Fuse Box Cover Control Unit Holder Bracket A2135400200

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YWC107000LUM

Land Rover Discovery 2 L318 Ultrasonic Alarm Sensor Module YWC107000LUM

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0971250

Volkswagen Tiguan MK2 Negative Battery Cable Lead Wiring 2.0 TDI 3Q0971250

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 34089476B

Ford Focus Mk3 Steering Wheel Interior Wiring Loom Multifunction Cable 34089476B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C4971693E

VW Volkswagen Polo 6R Rear Door Harness Wiring Loom Cable Left N/S 6C4971693E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1720327

Ford Ranger Mk6 Starter Motor 3.2 TDCi Diesel AB39-11000-BA

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8M5T-19G488-AT

Ford Transit Mk7 Bluetooth Voice Module Unit Control ECU 8M5T-19G488-AT

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T-18812-DB-1

Ford Transit Custom Roof Antenna Aerial Loom Cable Wiring BK2T-18812-DB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CK52-14B079-FE

Range Rover L405 Centre Console Wiring Loom Harness Cables CK52-14B079-FE

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8718206

Mini Cooper F56 Multimedia Radio Head Unit Satelite Navigation Stereo 8718206

€408.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0971036AA

Audi A1 8X Front Passenger Side Door N/S Window Switch Loom Cable 8X0971036Q

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EB3T-14A094-AC

Ford Ranger Mk4 Positive Battery Terminal Fuse Box Cap Cover EB3T-14A094-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FS7A-12A650-BSF

Ford Mondeo Mk5 Engine Unit ECU 160HP 1.5 Petrol UNCE FS7A-12A650-BSF Manual

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4519015100

Smart C451 SRS Air Module ECU Control Unit Module A4519015100

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14632-BC

Range Rover L538 Door Wiring Loom Harness Cable Rear Left N/S BJ32-14632-BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9217234

Module Bracket BMW X3 F25 X4 F26 Control Unit Holder Carrier 9217234

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0035666C

Audi A6 S6 C6 Radio CD GPS Player Head Unit SD Card Holder Module 4E0035666C

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2535409609

Mercedes W205 Door Wiring Harness Loom Cable Rear Left Right N/O/S A2535409609

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9273629-1

BMW 5 Series F10 Footwell Light Module ECU Control Unit FRM III TEMIC 9273629

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971030AF

Audi A4 S4 B9 Front Door Wiring Harness Loom Cable Passenger Side 8W0971030AF

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9367814

BMW 2 X1 X2 F39 F45 F48 Map Card Fuse Box Grouping Diagram 9367814

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KPLA-14D550-AA

Land Rover Range Rover Sport L494 Hybrid Battery Cooling Fan KPLA-14D550-AA

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-18D540-AA

Range Rover Vogue L405 Auxiliary Heater Control Module ECU CPLA-18D540-AA

€99.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8578495

Engine Wiring BMW F30 F31 330d F32 F36 430d N57N Loom Harness Cable 8578495

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7G92-14301-AE

Land Rover Freelander 2 L359 Battery Negative Earth Lead Cable 7G92-14301-AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469000717

Mercedes C117 X156 All Wheel Drive Control Unit Module ECU MFA A2469000717

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AG91-12A650-TP

Ford Mondeo Mk4 2.2 TDCI KNBA 200HP Engine Control ECU AG91-12A650-TP Manual

€317.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K5959655B

Volkswagen Caddy Mk4 Air Control Unit Module ECU 2K5959655B

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8582280-13

BMW F20 Engine Control ECU 117HP 116d N47N N47D20C 2.0 Diesel 8582280 Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0971858

Volkswagen Tiguan 5N Starter Retainning Plate Holder Bracket Mount 5N0971858

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9259581

BMW X3 F25 Map Card Fuse Box Grouping Diagram 9259581

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CV2T-10C679-BE

Ford Fiesta Mk7 B-Max Battery Negative Terminal Earth Cable CV2T-10C679-BE

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

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