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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Mercedes C117 X117 Front Bumper Parking Sensor Wiring Loom Harness A1175403901

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YQE103310

Land Rover Discovery 2 L318 Fuse Box Relay Control Module Unit YQE103310

€56.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 02M911024G

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

€42.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 95B971228L

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

€70.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 4L0971095AE

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

€132.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 7P0959655G

Volkswagen Touareg R SRS Air Module Control Unit ECU 7P0959655G

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 443937105B

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

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 8200185114

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

€37.95

Free delivery: Sep 15 – 16

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Part no. 7C0955737

Volkswagen Crafter Mk2 Positive Battery Cover Panel 7C0955737

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. LR047494

Range Rover EVOQUE L538 Rear Bumper Parking Sensor Wiring Loom EJ3215B484AC

€104.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6808523

BMW F10 Individual Audio System Amplifier Module ECU 6808523

€1,139.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. A1775406501

Mercedes W177 W247 Door Wiring Driver Side Cable Harness Loom A1775406501

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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Part no. 7PP959760B

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

€99.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 6G9N-19G229-BK

Ford Mondeo Mk4 Alarm System Siren 2.2 TDCi KNBA 1698716 Manual 6G9N-19G229-BK

€123.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2465401905

Mercedes W176 W246 Rear Bumper Parking Sensor Parktronic Wiring Loom A2465401905

€23.95

Free delivery: Sep 15 – 16

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Part no. 9354070

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

€42.95

Free delivery: Sep 15 – 16

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Part no. 8373700-2

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

€25.95

Free delivery: Sep 15 – 16

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Part no. 9884543

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

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5H0971385

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

€23.95

Free delivery: Sep 15 – 16

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Part no. A0009051910

Battery Cable Mercedes W177 W247 Negative Lead Terminal Harness A0009051910

€37.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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Part no. 9805524-LW

Mini R60 Rear PDC Ultrasonic Parking Sensor Light White 9805524

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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Part no. A1639200210

Mercedes W163 Rear Bench Shock Absorber Strut A1639200210

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3AF035552M

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

€23.95

Free delivery: Sep 15 – 16

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Part no. 8516739-5

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

€165.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 95B035773A

Porsche Macan 95B Telematics Control Unit Module ECU 95B035773A

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q4959392K

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

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3D0959759B

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

€28.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. A2115452601

Mercedes ML W164 Prefuse Fuse Distribution Box Front A2115452601

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GR3T-18C847-BA

Ford Mustang Mk6 Antenna Amplifier Control Unit Module Controller GR3T-18C847-BA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6Q0909605AH

VW Volkswagen Caddy 2k Air Module Control Unit Sensor ECU 6Q0909605AH

€137.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 04L907309R-7

Skoda Octavia RS 5E 2.0 TDI 184HP CUNA Engine ECU 04L907309R Manual

€66.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. A1645400750

Mercedes ML W164 Battery Fuse Box Power Distribution A1645400750

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 9364401

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

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2719000700

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

€180.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 07K903143F

Audi RS3 8V A3 8P Alternator Mounting Bracket Carrier 07K903143F

€113.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. A1331500120

Mercedes C117 W176 Temperature Sensor Adapter Wiring Harness Loom A1331500120

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 01394332080

Fiat Ducato Citroën Relay III Air Unit Module Control ECU 01394332080

€123.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 04E907309A

Volkswagen Golf Mk7 1.4 TSI CXSA Engine Control Unit ECU 04E907309A Automatic

€66.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. LR097687

Land Rover DISCOVERY SPORT L550 Front Bumper Wiring Loom Harness JK7214369GA

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1569057900

Mercedes W176 Aerial Antenna Amplifier A1569057900

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6421505526-1

Mercedes C219 CLS 320 CDI 224HP OM642.920 Engine ECU Kit A6421505526 Automatic

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GOLF-1K-SCREEN

Volkswagen VW Golf Mk5 Mk6 Passat B6 B7 Android Car Radio System Touchscreen 7"

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6549003200-2

Mercedes W213 E220d OM654 194HP Engine Control ECU Kit A6549003200 Automatic

€208.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6796503

BMW F07 GT ICM Integrated Module Chassis Management QL ES Control Unit 6796503

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4L0971693E

Audi Q7 4L Rear Door Wiring Harness Cable Loom Left Right N/O/S 4L0971693E

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W6945091N-1

Audi A5 F5 Rear Outer Taillight Lamp Wiring Loom Cable Left N/S 8W6945091N

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0971104M

Audi A4 B9 A4 S4 8W Rear Bumper PDC Parking Sensor Wire Harness Loom 8W0971104M

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HPLA-14D617-BD

Range Rover L405 Front Door Control Module Unit Left N/S HPLA-14D617-BD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. MK83-19J270-AC

Land Range Rover Velar L560 Noise ECU Module Pedestrian Protect MK83-19J270-AC

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. L9W3-14D550-AA

Land Rover Range Rover Velar L560 EV Battery Cooling Cooler Fan L9W3-14D550-AA

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7P5971693D

Porsche Cayenne 92A Rear Door Wiring Harness Cable Left Right N/O/S 7P5971693D

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0907503-5

Audi RSQ3 F3 Headlights Leveling Lamp Height Sensor Headlamp Unit 5Q0907503

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9418460

BMW G30 G31 PDC Module Parking Assistant Control Unit USS VA03 HIGH 9418460

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6938226-1

BMW E90 E90N E91 E91N LCI M3 Wiring loom rear door left right 6938225

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9303637

BMW Z4 E89 AUX USB Smartphone Connection Lead Cable Wiring 9303637

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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