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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BMW F90 M5 F91 M8 G30 Fuse Box Power Distribution Control Unit Box Rear 8713127

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9252690

BMW F12 f13 Interior Active Sound Module Control Unit Mount Bracket 9252690

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1725452540

Mercedes R172 Battery Holder Bracket Tray Cover Panel A1725452540

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1175403901

Mercedes C117 X117 Front Bumper Parking Sensor Wiring Loom Harness A1175403901

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14301-AC

Land Range Rover Evoque L538 Battery Earth Cable Negative Wire BJ32-14301-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8602802

BMW i3 I01 Hybrid Rex Engine Wiring Cable Harness Bracket Mount Trim 8602802

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02M911024G

VW Golf Audi A3 8P 2.0 TDI Diesel Engine Starter Motor 02M911024G

€23.95

Free delivery: Nov 12 – 13

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Part no. 8P0907279C

Audi A3 8P Body Control Comfort Unit Module BCM Unit 8P0907279C

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0971687AB

Audi Q5 8R Door Wiring Harness Cable Loom Wire Rear Left N/S 8R0971687AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 05C907309F-1

Seat Ibiza 6J FR 1.0 TSI DUSA 115HP Engine Control ECU Kit 05C907309F Automatic

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B971228L

Porsche Macan 95B Starter Motor Alternator Wire Cable Loom 95B971228L

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2721536091

Mercedes R171 SLK 350 M272.963 272HP Engine Control ECU Starter Kit A2721536091

€365.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0971095AE

Audi Q7 4L Front Bumper PDC Wiring Loom Harness Wire 4L0971095AE

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9374507-1

BMW F23 REM Rear Electronic Module Fuse Box Control Unit V2 9374507

€28.95

Free delivery: Nov 12 – 13

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Part no. 7P0959655G

Volkswagen Touareg R SRS Air Module Control Unit ECU 7P0959655G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 443937105B

VW Volkswagen Audi Skoda Seat Little Fuse Amp 30A 12V 443937105A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02Z911021K

Audi A3 8V Seat Leon 5F Starter Motor Actuator 1.6 TDI Diesel Engine 02Z911021K

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1DT-14A073-DF

Ford Focus Mk3 BCM Body Control Module Fuse Box Fusebox 1.5 TDCi F1DT-14A073-DF

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6C1T-14A067-AB-1

Ford Transit Mk7 Fuse Box Relay Housing Cover 2.2 TDCi 6C1T-14A067-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8200185114

Nissan Primastar X83 Renault Trafic II Sat Nav Navigation Head Unit 8200185114

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7C0955737

Volkswagen Crafter Mk2 Positive Battery Cover Panel 7C0955737

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KV6A-12A650-YA

Ford Transit Connect Mk2 Manual ECU Control Module 1.5 ZTGA 120HP KV6A-12A650-YA

€194.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2711537279

Mercedes W203 Engine Control Unit ECU Module 271946 144HP 1.8 Auto A2711537279

€184.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CK52-14D374-AE

Range Rover L405 Air Module ECU Control Unit Crash Impact Module CK52-14D374-AE

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V5945093G-2

Audi A3 8V Sedan Rear Lamp Light Tailgate Left N/S Harness Loom Wire 8V5945093G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2486284

Ford Ranger Mk6 Engine Starter Motor 2.0 EcoBlue Diesel JB3T-11000-AD

€37.95

Free delivery: Nov 12 – 13

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Part no. 9812871-2

Mini Paceman R61 Rear Lamp Tail Light Taillight Cable Wire Left N/S 9812871

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8663284-4

BMW F22 218i B38 Engine Control Unit ECU 1.5 Petrol 136HP Manual 8663284

€503.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR047494

Range Rover EVOQUE L538 Rear Bumper Parking Sensor Wiring Loom EJ3215B484AC

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6808523

BMW F10 Individual Audio System Amplifier Module ECU 6808523

€1,139.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G9945096F-2

Audi A6 C7 Rear Tail Light Lamp Taillight Right O/S Harness Loom Wire 4G9945096F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H1971035CG

Audi A4 S Line Wiring Loom Cable Wire Harness Front Driver Side 8H1971035CG

€56.95

Free delivery: Nov 12 – 13

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Part no. A1775406501

Mercedes W177 W247 Door Wiring Driver Side Cable Harness Loom A1775406501

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2711534691-4

Mercedes R171 SLK200 271.944 163HP Engine Control ECU Kit A2711534691 Automatic

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6825835

BMW 2 Series F45 F46 Cable Wiring Jump Starter Base B+ Engine Battery 6809391

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 83A971693H

Audi Q3 RSQ3 F3 Door Wiring Harness Loom Cable Rear Left Right N/O/S 83A971693H

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-14M401-LD

Land Rover Range Rover Sport L494 Wire Harness Loom Cable HPLA-14M401-LD

€32.95

Free delivery: Nov 12 – 13

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Part no. 7PP959760B

Porsche Cayenne Turbo 92A Front Seat Control Unit Module ECU 7PP959760B

€99.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. R8D2-14A073-AA

Land Range Rover Evoque L551 Fuse Box Junction Box 204DTY Diesel R8D2-14A073-AA

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1684865

Ford Focus St-2 Mk2 Alternator 120A 14V 2.5 Petrol Manual 3M5T-10300-JC 1684865

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9340998

BMW 1 2 Series F21 F22 Wiring Passenger Side Loom Front Door Left N/S 9340998

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465401905

Mercedes W176 W246 Rear Bumper Parking Sensor Parktronic Wiring Loom A2465401905

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9354070

BMW F45 Active Tourer F46 Gran Tourer Door Wiring Harness Cable Adapter 9354039

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8373700-2

BMW E60 E63 E87 E90 E91 4X Relay Make Contact White Green Set 8373700

€25.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9884543

BMW G30 G31 LCI High Voltage Battery Cable Wiring Harness Charger 9884543

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H0971385

Volkswagen Golf Mk8 CD1 Rear Seat Couch Wiring Harness Cable Loom 5H0971385

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YMM000380

Land Rover Discovery 2 L318 Rear Door Wiring Loom Harness Right O/S YMM000380

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9805524-LW

Mini R60 Rear PDC Ultrasonic Parking Sensor Light White 9805524

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8573779-3

BMW F30 330dX 258HP N57N Control Unit Module ECU DDE 8573779 Key FEM Automatic

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1639200210

Mercedes W163 Rear Bench Shock Absorber Strut A1639200210

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AF035552M

Volkswagen Passat B7 Aerial Antenna Booster Amplifier Unit Right O/S 3AF035552M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8516739-5

Mini Cooper D R55 R56 LCI R60 N47N Engine Control ECU Kit DDE 8516739 Manual

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1329060000

Smart Fortwo A451 Start Stop Control Module 71HP 1.0 Petrol Manual A1329060000

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B035773A

Porsche Macan 95B Telematics Control Unit Module ECU 95B035773A

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q4959392K

VW Volkswagen Crafter TR Door Control Module ECU Front Passenger Side 5Q4959392K

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3D0959759B

VW Volkswagen Phaeton 3D Seat Control Unit ECU Front Passenger Side 3D0959759B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2109622

Ford Focus Mk3 C-Max Starter Motor 1.6 Petrol 7G9N-11000-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T-18812-FD

Ford Transit Custom Aerial Anetenna Wiring Harness Cable Loom BK2T-18812-FD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2273171-1

Ford Fiesta Mk8 Fuel Shut Off Wiring Loom Harness Cable Connector JX7T-9F666-AC

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2115452601

Mercedes ML W164 Prefuse Fuse Distribution Box Front A2115452601

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9387234

Mini F55 Fuse Box Front Body Control Module ECU BCM Unit 9387234

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BL32-10C679-AE

Land Rover L494 Negative Terminal Battery Sensor BL32-10C679-AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669051702

Mercedes-Benz A C M W166 W176 W205 Aerial Antenna Amplifier Unit A1669051702

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779006604

Mercedes C118 W177 W247 Front Air Unit Module Control Unit ECU A1779006604

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K5945095D-2

Audi A4 B8 Saloon Lamp Tail Light Side Connector Wire Rear Left N/S 8K5945095D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6549007900-1

Mercedes W205 C300de OM654.920 306HP Engine Unit ECU Kit A6549007900 Automatic

€560.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0951253-2

VW Volkswagen Audi Seat Relay 449 12V 30A Unit Module 4 Pins 1K0951253 X2

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 83A971687L

Audi RSQ3 F3 Door Wiring Harness Loom Rear Left N/S Cabling 83A971687L

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HV6A-12A650-EC

Ford Transit Connect Mk2 1.0 GTDI M2GA Engine Control ECU HV6A-12A650-EC Manual

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0941003AL-2

Audi A5 8F Headlight Headlamp Xenon Connector Wire Plug Right O/S 8T0941003AL

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669063201-2

Mercedes ML W166 Rear Lamp Trunk Tail Light Wire Connector Right O/S A1669063201

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6M2T-18812-JJ

Ford Galaxy Mk2 Antenna Cable Wire Harness Loom 6M2T-18812-JJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645400750

Mercedes ML W164 Battery Fuse Box Power Distribution A1645400750

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8586540-5

BMW F30 F32 LCI 330d 430d N57N 258HP Control Unit ECU Kit DDE 8586540 FEM Key

€398.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6989713

BMW 1 3 Z4 Series E88 E89 E93 Convertible Cabrio DWA-Alarm System Module 6989713

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DPLA-14D617-AB

Land Range Rover L405 Front Door Control Unit ECU Passenger Side DPLA-14D617-AB

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8A2-14N144-BB

Range Rover Velar L560 Negative Battery Terminal Cable Lead Wiring CK52-14301-BC

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YML500831

Land Rover Range Rover Sport L320 Driver Seat Wire Loom Harness Cable YML500831

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8580308-1

BMW X1 E84 20dX Diesel N47N Engine Control Unit ECU Kit DDE 8580308 CAS3 Key

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9187011

BMW F01 F07 GT Console Lightning Centre LED Lamp Light Cable Wiring 9187011

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907503-6

Audi A3 S3 8V Headlights Leveling Sensor Front Lamp Height Unit 5Q0907503

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9364401

BMW G20 G21 G30 G31 Positive Battery Cable Lead Cover Cap 9364401

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715409333

Mercedes SLK R171 Center Console Arm Rest Wiring Loom Harness A1715409333

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2719000700

Mercedes R171 SLK200 Kompressor M271.954 Engine Control Unit ECU A2719000700

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M1959593K

Audi A6 C8 Q8 4M Touareg MK3 Door Control Unit Module Driver's Side 4M1959593K

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0945094H-2

Audi A8 D4 Rear Inner Boot Lid Tail Light Right O/S Harness Loom Wire 4H0945094H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8715688

BMW i4 G26 iX3 G08 Cover Base B+ Positive Distributor Cap Fuse Box 8715688

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T-18C394-BBE

Ford Transit Custom Tailgate Rear Door Wiring Loom Left N/S BK2T-18C394-BBE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1331500120

Mercedes C117 W176 Temperature Sensor Adapter Wiring Harness Loom A1331500120

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9118467

BMW X5 X6 Series E70 E71 Seat Backrest Adjustment Adapter Lead Cable 9118467

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. D1T1-14B321-AG

Ford Kuga Mk2 Transit Connect Air Module Control Unit ECU D1T1-14B321-AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0971693A

Audi Q7 4L Door Wiring Loom Harness Cable Rear Left N/S 4L0971693A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959595D

Audi A3 8V Rear Door Control Module Unit ECU Left Right N/O/S 5Q0959595B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2261687

Ford Transit Tourneo Connect Mk2 Fuse Box Cover Lid KT1T-14A003-AA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AH911023B-1

Volkswagen Caddy 2k Engine Starter Elstock 25-4145 2.0 Diesel BST 0AH911023B

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6429002900-5

Mercedes C207 C350 CDI BE OM642.836 Engine Control ECU Kit A6429002900 Automatic

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EB3T-18C847-BB-1

Ford Ranger Wildtrak Mk6 Antenna Amplifier Control Unit Module EB3T-18C847-BB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR097687

Land Rover DISCOVERY SPORT L550 Front Bumper Wiring Loom Harness JK7214369GA

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6971162GR

VW Touareg 7P Front Door Digital Sound Wiring Loom Driver Side O/S 7P6971162GR

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

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