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 X3 E83 LCI Petrol N52N Cable Alternator Starter Base B+ 3415607

€23.95

Free delivery: Sep 23 – 24

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Part no. YTA101910

Land Rover Freelander L314 Positive Plus Pole Battery Cable Lead Loom YTA101910

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6937083

Ultra Sonic Module Mini Cooper R50 R53 Alarm System Sensor 6937083

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7541779

BMW Z4 E85 2.0i N46 Cable Alternator Starter Base B+ 7541779

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8616815

BMW X5 F15 Cooler High Voltage Battery Upper 8616815

€66.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 7928582

BMW G01 G02 G05 G20 G21 G22 G30 G31 G32 DAB Audio Sound Amplifier Module 7928582

€165.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8506444

BMW E90 E91 LCI E92 330d N57 245HP ECU Engine Control Unit DDE 8506444 Manual

€113.95

Free delivery: Sep 23 – 24

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Part no. 7379674-2

BMW F01 F02 LCI Front Headlight Wiring Harness Cable Plug Right O/S 7379674

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0005440456

Mercedes W163 Green Relay 2-Pin ML350 112970 3.7 Petrol 245HP A0005440456

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8E0907559H-1

Audi A4 B7 3.2 FSI Quattro AUK 255HP Engine ECU Kit 8E0907559H Manual

€474.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5A1C4E8

BMW G20 G21 Telematics Bluetooth Communication Control Module 5A1C4E8

€184.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7567321-1

BMW 1 3 Series E81 E87 LCI E90 116i 316i N45N ECU Kit DME 7567321 + CAS3 + Key

€408.95

Free delivery: Sep 23 – 24

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Part no. 03E906019M

Volkswagen Polo 6R 1.2 Petrol CGPB 60HP Engine Control ECU Manual 03E906019M

€42.95

Free delivery: Sep 23 – 24

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Part no. DV41-12A650-BJ-1

Ford Kuga Mk2 2.0 TDCi TXMA 163HP Engine Control ECU Kit DV41-12A650-BJ Manual

€332.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. MB3T-14A411-SRC

VW Volkswagen Amarok NF Ford Ranger Cab Wiring Harness Loom MB3T14A411SRC

€23.95

Free delivery: Sep 23 – 24

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Part no. 9339825

BMW G11 G30 G31 Power Supply Module High Voltage Battery Terminal Point 9339825

€23.95

Free delivery: Sep 23 – 24

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Part no. CPLA-14B673-AH

Land Rover Range Rover L405 Tailgate Hatch ECU Module Control Unit CPLA14B673AH

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7843332

Engine Wiring BMW F10 M5 F12 M6 Loom Harness Injection Valve Cyl. 5-8 7843332

€113.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. DWM-500021

Land Rover Discovery 3 L319 Battery Box Base Panel Outer Right O/S DWM-500021

€23.95

Free delivery: Sep 23 – 24

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Part no. 4H0907064CH

Volkswagen Touareg 7P BCM Body Comfort Module Control Unit 4H0907064CH

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G8971693

Audi A7 4G Door Harness Loom Cable Wiring Rear Left Right N/O/S 4G8971693

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0907658C

Audi S3 8Y A5 F5 Q5 FY A8L 4H Air Quality Sensor Unit 4H0907658C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7W93-11A134-AA

Jaguar XF 250 Power Adapter Battery Positive Terminal 7W93-11A134-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8634166

Alternator BMW G20 G30 G14 B47 B48 B58 B46 Alternator 180A 14V 8634166

€189.95

Free delivery: Sep 23 – 24

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Part no. A2139001726

Mercedes W205 W247 W253 Distronic Radar Sensor Control Unit Module A2139001726

€237.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7H0971691Q

Volkswagen Transporter T5 Sliding Side Door Wiring Loom Harness Cable 7H0971691Q

€28.95

Free delivery: Sep 23 – 24

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Part no. 8510832-1

BMW E90 E91 LCI 318d Engine N47N 143HP ECU Kit DDE 8510832 CAS3 Key Automatic

€56.95

Free delivery: Sep 23 – 24

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Part no. 7L6951171A

Volkswagen Touareg 7L Ultrasonic Alarm Monitor Sensor Control Unit 7L6951171A

€23.95

Free delivery: Sep 23 – 24

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Part no. 6G9T-19E624-DB

Ford Kuga C394 Heater Blower Fan Motor Resistor 6G9T-19E624-DB

€23.95

Free delivery: Sep 23 – 24

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Part no. A2475464000

Mercedes C118 W177 C247 Positive Battery Cable Cover Trim Tray A2475464000

€23.95

Free delivery: Sep 23 – 24

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Part no. LR065819

Land Rover Discovery Sport L550 Starter Motor 14V 2.2 224DT Diesel EJ32-11001-AC

€47.95

Free delivery: Sep 23 – 24

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Part no. 5K0907159B

VW Golf Mk6 Alarm Signal Sound Impact Body Control Module Unit 5K0907159B

€23.95

Free delivery: Sep 23 – 24

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Part no. 8843416

BMW G30 Battery Cell Module Supervision Circuit Control Unit 8843416

€42.95

Free delivery: Sep 23 – 24

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Part no. 9124585-SED

BMW E87 E90 PDC Parking Sensors Ultrasonic Set x2 Sedonarot - A79 9124585

€23.95

Free delivery: Sep 23 – 24

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Part no. 9797875

BMW U06 X1 U11 High-Voltage Battery Terminal Strip Bracket Mount Support 9797875

€23.95

Free delivery: Sep 23 – 24

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Part no. 7809680

Engine Wiring BMW F10 F11 N57 N57S Loom Cable Harness Injector Module 7809680

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5NA945208G-2

VW Volkswagen Tiguan 5N Rear Tail Light Outer Right O/S Harness Loom 5NA945208G

€23.95

Free delivery: Sep 23 – 24

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Part no. A2055405203

Mercedes W205 Negative Cable Battery Lead Minus Pole Wiring A2055405203

€23.95

Free delivery: Sep 23 – 24

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Part no. 8F0959655D

Audi A5 8F Air Module Control Unit ECU Crash Control 8F0959655D

€23.95

Free delivery: Sep 23 – 24

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Part no. 7939168

Rain Sensor BMW F20 F21 F30 F31 Windscreen Light Solar Condensation Unit 7939168

€56.95

Free delivery: Sep 23 – 24

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Part no. BK31-13D152-AF-2

Ford Transit Mk8 Headlight Headlamp Wiring Cable Front Right O/S BK31-13D152-AF

€23.95

Free delivery: Sep 23 – 24

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Part no. 9313616

BMW F30 F31 Driver's Side Door Wiring Electrical Loom Harness Cable 9313616

€56.95

Free delivery: Sep 23 – 24

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Part no. M8A2-9L468-AB

Range Rover Velar L560 Rear Subframe Wiring Harness Cable Loom M8A2-9L468-AB

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9827016

Mini F65 F66 F67 BMW F70 F74 B+ Power Junction Terminal 9827016

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009820512

Energy Distributor Mercedes W177 W212 Power Control Unit Module A0009820512

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. H1BT-14B321-AJ

Ford Fiesta Mk8 Air Module Crash Impact Sensor H1BT-14B321-AJ

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2205408110

Mercedes W220 Battery Wire Starter Alternator Cable 55 AMG 113986 A2205408110

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L5971204

Porsche Cayenne 955 Washer Spray Nozzle Wiring Loom Cable 7L5971204

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. NNW500440

Range Rover L322 Four Wheel Drive Transfer Box Module NNW500440

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5M0971557B

Volkswagen Golf Plus 5M Door Wiring Loom Harness Driver's Side 5M0971557B

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8636596

BMW 1 3 Series F20 F21 F30 F31 Line Cable Power Distribution Module 8636596

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BV6T-14B526-BC

Ford Focus Mk3 Voltage Stabilisation Control Module Bosch ECU BV6T-14B526-BC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3C9971104B

Volkswagen Passat B6 Rear Bumper Parking Sensor Wiring Loom Harness 3C9971104B

€23.95

Free delivery: Sep 23 – 24

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Part no. 9137799

Door Wiring Mini Cooper R55 R56 R57 R58 R59 Passenger Cable 9137799

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0035063D

Audi A6 C8 MIB2 Multimedia Navigation Radio Control Head Unit 4K0035063D

€664.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. AV1T-14A583-AAC

Ford B-Max Mk1 Tailgate Boot Lid Loom Wiring Harness Cable AV1T-14A583-AAC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CK52-14687-ED

Range Rover L405 Rear Door Wiring Harness Ambient Left N/S CK52-14687-ED

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0915429C

Audi A6 C7 Battery Positive Terminal Cover 8K0915429C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5K0035156A-1

VW Volkswagen Touran 1T Stereo Radio CD Changer Player Head Unit 5K0035156A

€23.95

Free delivery: Sep 23 – 24

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Part no. 8Y4971104BK

Audi S3 8Y Rear Bumper Wiring Harness Cable Loom 8Y4971104BK

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2118704126

Mercedes W221 Door Control Module Right Rear O/S A2118704126

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BJ32-06040-A

Land Rover Discovery Sport L550 Fuse Box Trim Cover BJ32-06040-A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8512498-5

BMW E84 E90 LCI 20dX 320xd N47 177HP ECU Kit DDE 8512498 CAS3 + Key Manual

€151.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0971081A

Audi A3 8V Windscreen Washer Wiring Loom Harness Cable Unit 5Q0971081A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469000012-2

Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012

€170.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 02E911024M

Audi A3 8V 2.0 TFSI DJHA Starter Motor 12V 02E911024M

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8691838-3

Mini F54 F55 F57 B38 136HP Petrol Engine Control ECU Kit DME 8691838 Manual

€284.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. FU5T-15604-DAJ

Ford Mondeo Mk5 Body Control Module Fuse Relay Box BCM ECU FU5T-15604-DAJ

€104.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BK3T-14D502-FED

Ford Transit Mk8 2.2 TDCI Manual Transmission Wiring Harness BK3T-14D502-FED

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1679004209

Mercedes W177 Head Unit Media Player Audio Radio Controller A1679004209

€189.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04E903023K

Audi Seat Skoda Volkswagen 1.4 TSI Petrol Alternator Generator Valeo 04E903023K

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6933410

BMW E85 Fuses Electrical Fuse Set 6933410

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6932644-1

BMW 3 5 Series E60 E71 E90 E92 Suppression Filter Aerial Module Antenna 6932644

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6549001400-1

Mercedes W213 E220 CDI 654.920 194HP Engine ECU Kit A6549001400 Automatic

€455.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6G92-10E887-EE

Land Rover Freelander 2 L359 GPS Navigation Sat Nav DVD Player 6G92-10E887-EE

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0075420418

Yaw Module Mercedes W204 Rotation Rate Acceleration Sensor A0075420418

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2045420323

PDC Display Mercedes W204 Front Parking Sensor Screen Control Unit A2045420323

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055403742

Mercedes W205 Front Driver's Door Wiring Harness Cable A2055403742

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5TA998477

Volkswagen Tiguan 5N LED Daytime Running Light Headlight Control Unit 5TA998477

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2115455332

Mercedes C219 SAM Module Comfort Control Unit A2115455332

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5K0035552B

VW Volkswagen Golf Gti 5k Roof Aerial Antenna Amplifier Right O/S 5K0035552B

€23.95

Free delivery: Sep 23 – 24

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Part no. 1K0906093H

Seat Ibiza 6J 1.2 TSI Petrol Fuel Pump Control Unit Relay 1K0906093H

€28.95

Free delivery: Sep 23 – 24

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Part no. 8486839-3

BMW F20 LCI 118i B38 136HP Engine ECU Kit DME 8662411 + FEM + Key Automatic

€469.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07357588720

Citroën Relay Mk3 Multimedia Sat Nav Radio DAB NAV Player Head Unit 07357588720

€237.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2218207510

Mercedes W221 Anti Theft Roof Alarm Ultrasonic Motion Sensor Unit A2218207510

€23.95

Free delivery: Sep 23 – 24

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Part no. 2095148

Ford Focus Mk3 Kuga Mk2 Door Module Control Unit Driver's Side F1ET-14B531-BG

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9137055

BMW E61 E63 Panoramic Sliding Sunroof CAN Bus Module Control Unit 9137055

€75.95

Free delivery: Sep 23 – 24

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Part no. 1486455080

Peugeot Expert Citroen Jumpy Negative Battery Terminal Cable Wiring 1486455080

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2309050639

Mercedes X164 W221 Ignition Key Remote Control Unit Fob A2309050639

€28.95

Free delivery: Sep 23 – 24

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Part no. 5341614

Ford Mustang GT Mk6 Starter Motor Engine Actuator Manual 5.0 V8 GR3T-11000-AA

€142.95

Free delivery: Sep 23 – 24

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Part no. 9305736

BMW X1 E84 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9305736

€61.95

Free delivery: Sep 23 – 24

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Part no. 9325908

BMW F36 Gran Coupe Door Wiring Harness Cable Loom Front Passenger Side 9325908

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q4959395E

Skoda Superb Mk3 3V Rear Door Control Unit Module Left Right N/O/S 5Q4959395E

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2465409611

Mercedes-Benz A B Class W176 W246 Battery Surround Trim Box Bracket A2465409611

€23.95

Free delivery: Sep 23 – 24

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Part no. 9222071

BMW F07 BCM Body Control Module Unit Controller 9222071

€47.95

Free delivery: Sep 23 – 24

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Part no. 4K8971035BH

Audi A6 C8 Door Wiring Harness Cable Loom Front Driver's Side 4K8971035BH

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. FK72-18808-AC

Land Rover Discovery L550 Boot Trunk Subwoofer Rear Bass Speaker FK72-18808-AC

€23.95

Free delivery: Sep 23 – 24

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Part no. 8U0971035AK

Audi Q3 8U Door Loom Wiring Harness Cable Front Driver's Side 8U0971035AK

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. AV6N-10300-GC

Alternator Ford Focus MK3 Fiesta MK6 1.6 TDCi Engine Generator AV6N-10300-GC

€23.95

Free delivery: Sep 22 – 24

If paid before 14:00

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