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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Volkswagen Touareg 7P Front Lamp Headlight Range Control Module ECU 7P6907357

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5WA907727AC

Skoda Octavia IV Climate Air Conditioning Control Module Unit 5WA907727AC

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7L0941824B

Volkswagen Touareg 7L Fuse Box Module Electrical Relay Control Unit 7L0941824B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. EH22-14Q073-AA

Land Rover Discovery 4 L319 Fuse Relay Box EH22-14Q073-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0959591A

Audi A8 D4 4H Sunroof Wind Deflector Module Control Unit 4H0959591A

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6772102

BMW X5 X6 E70 E71 Holder Bracket Actuator Unit 6772102

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9360501-3

BMW F40 F48 Mini F56 Distribution Fuse Box Rear Electric Power Fuse Box 9360501

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HPLA-14F392-JE

Range Rover Sport L494 Body Control Module Unit BCM ECU HPLA-14F392-JE

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8X0941004A-2

Audi A1 8X Headlight Headlamp Wiring Harness Cable Front Right O/S 8X0941004A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7PP907064DD

Porsche Cayenne 92A Body Control Module BCM ECU 7PP907064DD

€156.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2059009230

Air Conditioning Module Mercedes W205 C253 A/C Control Unit ECU A2059009230

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2115455232

Mercedes W211 Front Fuse Box SAM SRB Module Relay Control Unit A2115455232

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. M8E2-14F041-BB

Land Range Rover Velar L560 L461 L462 Body Control Module ECU M8E2-14F041-BB

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1669052102

Mercedes W166 Battery Cable Wire Negative Minus Battery Sensor A1669052102

€66.95

Free delivery: Sep 15 – 16

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Part no. A1635409108

Mercedes-Benz M ML W163 Rear Window Heater Cable Harness Wiring A1635409108

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7624621

BMW X1 F84 Starter Wiring Battery Alternator Cable Harness Loom 7624621

€32.95

Free delivery: Sep 15 – 16

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Part no. A1131533479

Mercedes W163 W211 W220 Engine Control Unit ECU 279HP S430 Automatic A1131533479

€180.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F7910401L-2

Audi A6 C6 2.7 TDI Quattro CANC 190HP Engine Module ECU Kit 4F7910401L Automatic

€336.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. N8B2-19G229-AA-1

Range Rover Velar L560 Anti Theft Alarm Siren Horn Mount Bracket N8B2-19G229-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1779061302

Mercedes EQA H243 W247 Fuse Box Relay Control Unit Module A1779061302

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9891437

BMW F40 F44 G20 LED Ambient Light Module Control Unit Violet 9891437

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 99160913700

Porsche 718 Boxster 982 Front Brake Caliper Cable Harness 99160913700

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4KE907107A

Audi A6 C8 Front Camera Driver Assistance Control Unit Module zFAS 4KE907107AR

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. C1B1-12A650-FK

Ford Fiesta Mk7 1.0 Ecoboost SFJA 100HP Engine Control ECU C1B1-12A650-FK Manual

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5M0907357E

Volkswagen Touran 1T Passat B7 Headlight Control Unit Module ECU 5M0907357E

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9362351-2

Mini F55 F56 BMW F45 i3 I01 Head Unit Radio DAB Media Player Unit 9362351

€85.95

Free delivery: Sep 15 – 16

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Part no. 6950525

BMW 3 6 Series E63 E64 E93 DWA Alarm System Module Unit 65756950525 6950525

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HB3T-18C942-DA

Ford Ranger Mk6 Battery Minus Negative Cable Wiring Harness HB3T-18C942-DA

€28.95

Free delivery: Sep 15 – 16

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Part no. 14D179-AB

Range Rover Evoque L538 DPF Pressure Sensor Wiring Cable 14D179AB

€23.95

Free delivery: Sep 15 – 16

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Part no. A2465403505

Door Wiring Mercedes W176 W246 Front Passenger Side Cable Harness A2465403505

€23.95

Free delivery: Sep 15 – 16

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Part no. V23134-B52-X477

Porsche Cayman 987 Boxster Air Conditioning Control Relay V23134-B52-X477

€37.95

Free delivery: Sep 15 – 16

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Part no. 6823590

BMW F10 Footwell Light Control Unit Module ECU FRM III 6823590

€89.95

Free delivery: Sep 15 – 16

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Part no. 8321087-1

BMW E60 Front Seat Height Adjustment Electric Motor Actuator 0390203234 8321087

€23.95

Free delivery: Sep 15 – 16

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Part no. 9281720

BMW F10 F11 KaFAS Camera Assist Speed Limit Control 9281720

€75.95

Free delivery: Sep 15 – 16

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Part no. 5N0971694G

Volkswagen Tiguan 5N Rear Door Wiring Loom Harness Right O/S 5N0971694G

€23.95

Free delivery: Sep 15 – 16

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Part no. 9873895

BMW F40 Crash Control Unit Air Module ECU Continental 9873895

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8U0945094M-1

Audi Q3 8U Rear Trunk Boot Lamp Light Wiring Loom Plug Right O/S 8U0945094M

€23.95

Free delivery: Sep 15 – 16

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Part no. 5E0971694M

Skoda Octavia Door Wiring Harness Loom Cable Rear Right O/S 5E0971694M

€23.95

Free delivery: Sep 15 – 16

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Part no. 8K0959792

Audi A4 B8 Door Module Control Unit Module ECU Front Left N/S 8K0959792

€32.95

Free delivery: Sep 15 – 16

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Part no. 6821404

High Voltage Cable BMW F45 Mini F60 Hybrid Plugin Alternator 6821404

€332.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GJ32-14K042-BC

Range Rover Evoque L538 Centre Console Wiring Loom Harness Cable GJ32-14K042-BC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. K8D2-15K622-DB

Range Rover Sport L494 Comfort Control Module Unit ECU K8D2-15K622-DB

€23.95

Free delivery: Sep 15 – 16

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Part no. 6933162

BMW E65 E66 On-board Navigation Display Monitor Screen 8,8" 6933162

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03C903025DX

VW Volkswagen Tiguan Mk1 5N Audi A1 8X Alternator Generator 1.4 TFSI 03C903025DX

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6819335

BMW F20 F30 BCM Body Comfort Control Module CCM Unit ECU 6819335

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7533283

BMW X3 Z4 Series E83 LCI E85 E86 Cover Top Power Distribution Fuse Box 7533283

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2K5971557C

Volkswagen Caddy 2K Door Wiring Harness Cable Front Left Right O/S 2K5971557C

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055406621

Starter Cable Mercedes W205 GLC X253 Electrical Wiring Harness A2055406621

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03G906021LD

Skoda Octavia Mk2 2.0TDI BKD 140HP Engine Control Unit ECU 03G906021LD Manual

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1321501033

Smart Fortwo 451 Starter Alternator Wiring Loom Cable 1.0 M132 A1321501033

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8678968

Engine Wiring Mini F56 F60 BMW F45 F46 Petrol Sensor Module 1 Harness 8678968

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 982907159B

Porsche Cayman 718 982 Impulse Sender Control Unit Module 982907159B

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9P0971174E

Porsche 718 Boxster 982 Rear Bumper Parking Sensor Wiring Harness ABS 9P0971174E

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 95B907801C

Porsche Macan 95B Electric Parking Brake Module Control Unit 95B907801C

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7951288

BMW F20 F30 F31 Mini F55 F56 F60 Control Unit Air Conditioning Module 7951288

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0971030AP

Audi A4 B8 Passenger Front Door Wiring Harness Loom Cabling 8K0971030AP

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 04L907309R-4

Skoda Octavia III 5E 2.0 TDI 184HP CUNA Engine Control ECU Kit 04L907309R Manual

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6920469

BMW E65 E66 E67 Sensor A-pillar Right Airbag 65776920469 6920469

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03L906022RD-1

Skoda Octavia Mk2 VRS 2.0 TDI CEGA Engine ECU Kit 03L906022RD Manual

€474.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. F1F1-12A650-SA-1

Ford Focus Mk3 1.5 TDCI XWD 120HP Engine ECU Kit F1F1-12A650-SA BCM + 2 Key

€208.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AH42-15K602-BC

Range Rover L405 Radio Antenna Reciver Module Unit AH42-15K602-BC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2218702086

Mercedes W221 Rear Seat Control Module Unit ECU A2218702086

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055408709

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

€47.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 7519401

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

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 83A971104AP

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

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03G906021AB-1

Audi A3 8P 1.9 BLS 105HP Engine Control Unit ECU Kit 03G906021AB Manual

€165.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. XQD000230PMA

Land Rover Freelander L314 Sat Nav Head Unit Navigation System XQD000230PMA

€56.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 7N5837202AC

Seat Alhambra 7n Ibiza 6J Leon 1P 5 Button Car Key Remote 434 MHZ 7N5837202AJINF

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0061519801

Mercedes W204 W212 W251 Starter Motor 642872 Diesel Engine Starter A0061519801

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8377240-1

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

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5M5T-14B192-EA

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

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 7PP907279CF

Porsche 718 Boxster 982 Body Control Module BCM ECU 7PP907279CF

€332.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0038208426

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

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G1035053J

Audi A1 8X A4 B9 Radio Head Unit Stereo Audio Module Controller 4G1035053J

€336.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. BM5T-14D212-CC

Ford B-Max Bluetooth Electronic Control Module Unit ECU Mk1 BM5T-14D212-CC

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6823589

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

€94.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 8V0907376G

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

€170.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. A2045401307

Mercedes W204 Centre Console Lightning Dashboard Cable Wiring A2045401307

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. A1665401913

Mercedes W166 GLE Heater Booster PTC Wiring Harness Loom Cable A1665401913

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9247481

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

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8583423-3

Mini R60 Cooper SD N47N 2.0 143HP Engine ECU Kit DDE 8583423 CAS3 Key Manual

€194.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

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