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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Range Rover Sport L320 Aerial Antenna Amplifier Unit 6H32-18K891-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9208452

Wiring BMW F07 Front Bumper PDC Wiring Park Assist Sensor Harness 9208452

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W0959655B

Audi A4 B9 A5 S5 F5 Air Module Control Unit ECU 8W0959655B

€237.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059007147-1

Mercedes W205 C200 264.915 198HP Engine Control ECU Kit A2649000700 Automatic

€560.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1665402102

Battery Cable Mercedes W166 C292 Starter Alternator Wiring Harness A1665402102

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DK62-14301-BC

Range Rover L405 Negative Minus Battery Wiring Loom Harness Cable DK62-14301-BC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06K907425C-2

VW Scirocco Mk3 2.0 TFSI CULA 220HP Engine ECU Kit BCM + Key 06K907425C Manual

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6990089-1

BMW 6 X3 Series E63 E83 Radio Antenna Amplifier Suppression Filter

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8P0972051

Audi A3 8P Seat Belt Warning System Wire Harness Cable Loom 8P0972051

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AH2211001AC

Land Rover Range Rover Sport L320 3.0 Diesel Engine Starter Motor AH2211001AC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2124405433

Mercedes W212 Wiring Harness Right Front Door Control Unit Right O/S A2124405433

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR143878

Land Rover Range Rover Evoque L551 Battery Cable Wiring Harness M8D2-14N170-AB

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6G9T-14240-HBK

Ford Mondeo Mk4 Door Wiring Loom Wire Harness Rear Right O/S 6G9T-14240-HBK

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7311030-2

BMW F45 Rear Light Lamp Trim In The Side Panel Wiring Cable Right O/S 7311030

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9184810

BMW X6 E71 Wiring Set Wash Water Container Cable Loom 9184810

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9196938

BMW E93 Seat Control Module Unit ECU 9148266

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR028116

Land Rover Range Rover Evoque L538 Alternator 2.2 TDCI BJ32-10300-AD

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2Q0980653H

Seat Ibiza KJ1 VW Polo MK6 Front Camera Lane Assist Control Unit 2Q0980653H

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0955559M

Volkswagen VW Golf Mk5 Rain Sensor Windscreen Control Unit Module 1K0955559M

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9217033

Battery Cable BMW F01 F02 Positive Wiring Plus Pole Red 9217033

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0955559AB

Volkswagen Golf Mk5 Rain Sensor Front Windscreen Control Unit Module 1K0955559AB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7LA937550A

VW Transporter T6 Fusebox Module Power Distribution Control Module 7LA937550A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6G9T-14A076-CA

Ford Mondeo MK4 Fuse Box Cover Panel Hosing Lid 6G9T-14A076-CA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009822523

Mercedes W156 W242 W246 W447 Relay 4-Pin Black Hella A0009822523

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR014002-2

Land Rover Discovery 4 L319 Rear Taillight Lamp Wiring Cable Right O/S LR014002

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129005401

Mercedes W207 Fuse Junction Box Relay Control Unit Module SAM A2129005401

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8X0971035BG

Audi A1 8X Front Door Loom Wiring Harness Cable Driver's Side O/S 8X0971035BE

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8585727

Wiring BMW F21 F30 F34 F36 Diesel N47N Engine Gearbox Module Harness 8585727

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9079053907

Mercedes Sprinter W907 W910 Battery Sensor Cable Negative Terminal A9079053907

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. D1BT14D212NA

Ford Transit Connect Mk2 II Bluetooth Control Module Unit ECU D1BT14D212NA

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0005456616

Mercedes W212 Automatic Gearbox EGS Control Module Unit ECU A0005456616

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7M0951253C

Volkswagen T5 Audi Seat Skoda Relay Black Control Unit 5 Pin 12V 7M0951253C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2198353

Ford Fiesta Mk8 Starter Motor Engine Actuator 1.5 ST EcoBoost JX6T-11000-CA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR069740

Range Rover Evoque L538 Rear Tailgate Camera Unit Bracket Panel LR069740

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. YTA000100

Range Rover L322 Positive Plus + Battery Alternator Cable Lead 4.4 7514551

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9146244

BMW X3 X5 E53 E83 Control Unit Sliding Lifting Roof Panorama 9146244

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1742690-1

BMW E60 E81 E87 E90 E91 X3 E83 Relay Changer Make Contact Salmon Red Set 1742690

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E1971035CQ

Audi A4 B7 Front Door Cables Wiring Loom Passenger's Side 8E1971035CQ

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03G906056S-3

Audi A3 8P 1.9 TDI BLS 105HP Engine Control ECU Kit BCM + Key 03G906056S Manual

€218.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1508937

BMW Mini Cooper S One D R50 R52 R53 Negative Battery Cable Wire 1508937

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0907530F

Volkswagen Touran 1T Central Gateway Module Control Unit Lear 1K0907530F

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6934095

BMW 7 Series E65 E66 Door Wiring Harness Rear Right Left N/O/S

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9362396

BMW F20 REM Rear Electronic Module Fuse Box Control Unit V3 9362396

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F1971036F

Audi A6 C6 Front Passenger Door Wiring Left N/S Harness Loom Cable 4F1971036E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03G906021LG-1

Audi A3 8P 2.0 TDI BKD 140HP Engine Control Unit ECU Kit 03G906021LG Manual

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2025402373-1

Mercedes A C E Class 1 W169 W203 W211 OBD Diagnostic Plug Cover A2025402373

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8689722-2

BMW F32 Engine ECU Control Unit 184 HP 420iX B48 2.0 Petrol B48 8689722 KIT

€550.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 02M911024C

Volkswagen Tiguan 5N Engine Starter Motor 02M911024C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9364818

BMW Z4 E89 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9364818

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8835156

BMW U06 X1 U11 High-Voltage Battery Radiator Cooler Line Hose Tube Pipe 8835156

€560.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8P0837220D-2

Audi A3 S3 8P Flip Key Fob Remote Control Button Lock Cylinder 8P0837220D SET

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1645400074

Mercedes W164 W251 Front Seat Wiring Loom Harness Left N/S A1645400074

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9218697

BMW X6 E71 Central Woofer Bass Speaker Stereo Subwoofer N/S 9218697

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1790382

Ford Galaxy Mondeo Mk5 S-Max Alternator 2.0 Petrol 150A 6G9N-10300-ABC 1790382

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7586426

BMW E89 F10 F25 F26 Battery Clamp Bracket Holder 7586426

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 95B035736A

Porsche Macan 95B USB SD SIM Card Module Multimedia Reader Port 95B035736A

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6821204

Mini Clubman F54 Negative HV Battery Terminal Cable Harness Wiring Loom 6821204

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2465400308-1

Mercedes W176 W246 OM651 Alternator Cable Battery Prefuse Box A2465400308

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1715405045-1

Mercedes SLK R171 Central Gateway Module ECU Control Unit A1715405045

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1378330080

Citroen Relay Peugeot Boxer Positive Battery Cable 1378330080

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9890599

BMW F90 M5 G11 G30 Air Module Crash Control Unit 9890599

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009822723

Mercedes W205 Estate Fuse Relay Box Module Control A0009822723

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6964263

BMW 3 Series E93 E93N Cabrio Module Bracket Holder CTM 6964263

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P5971693F

Porsche Cayenne 92A Wiring Loom Harness Cable 7P5971693F

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6864206

Air Module BMW F20 F21 F30 F31 F32 ECU ICM Plus Control Unit 6864206

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5A656B3

BMW G20 Air Module Control Unit SRS ECU 5A656B3

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0971250AM

Volkswagen VW Scirocco Mk3 Negative Battery Terminal Cable Wiring 1K0971250AM

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009052500

Mercedes W212 ESP Yaw Rate Speed Sensor Control Unit A0009052500

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2465407711

Mercedes W176 Door Harness Loom Cable Wiring Rear Left Right N/O/S A2465407711

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6Y6945111C-1

Skoda Fabia MK1 6Y Rear Tail Light Lamp Wiring Harness Cable Left N/S 6Y6945111C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 0AD927755L

Volkswagen Touareg 7L Transfer Box Control Unit Module ECU Automatic 0AD927755L

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. YTA000010

Range Rover L322 Positive Plus + Starter Wiring Harness Cable 4.4 1H4Z-14N144-EA

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 13720856

Mercedes W212 Negative Cable Battery Terminal Wiring 13720856

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LK62-9D370-BC

Range Rover Velar L560 Fuel Pump Control Module ECU 2.0 Diesel LK62-9D370-BC

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9181453

BMW 1 X4 X5 Series F20 F21 F25 F26 Antenna Aerial Diversity Trap Circuit 9181453

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6819653

BMW X5 F15 Fuse Box Front Body Control Module ECU BCM Unit 6819653

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F0971687A

Audi A6 C6 Door Window Motor Wiring Cable Loom Front Right O/S 4F0971687A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9231466

BMW 2 3 4 Series F22 F30 F32 Antenna Amplifier Module Trap Circuit 9231466

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9326437

BMW F30 F31 Wiring Passenger Loom Front Door Cables Harness 9286241

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3AA907273B

Volkswagen Passat B7 Tyre Pressure Control Module TPMS 3AA907273B

€184.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7823310

BMW 3 Series F30 F31 330d 330dX N57N Diesel Alternator Starter Cable B+ 7823310

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2125420018-TNG

Mercedes W204 Parking Sensor PDC Distance Front Tenorite Grey - 755 A2125420018

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9251748

BMW E81 E87 E90 E91 E92 LCI Combox Telematics Module Navigation 9251748

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 0986021230

BMW 3 Series E90 E91 E92 E93 Engine Starter Motor 0 986 021 230

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9319081

BMW F20 F21 F22 F30 F31 F32 Radio Remote Control Receiver 434 MHZ

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5QS959655A

Audi A3 S3 8Y Air Module Crash Impact Sensor Unit Control ECU 5QS959655A

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AV1T-14A584-HCD

Ford B-Max Mk1 Door Loom Wiring Harness Cable AV1T-14A584-HCD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8510221-6

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 CAS3 + Key

€108.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06J903023G

VW Volkswagen Polo GTI 6R Golf Mk7 Alternator Generator 14V 140A 6J903023G

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 281480007R

Smart A453 Renault Trafic MK3 Front Dashboard Tweeter Speaker 281480007R

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9348358

BMW E60 Body Comfort Control Unit DDE Module ECU 9348358

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K5945095AA-1

Audi A4 B8 Saloon Rear Lamp Tail Light Wiring Harness Plug Left N/S 8K0973706

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6956939-1

Changer Unit BMW E63 E64 6-disc Compact CD Head Player 6956939

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4K0971237

Audi A6 C8 A7 4G Engine Earth Line Ground Wiring Harness Cable 4K0971237

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4K9035225B

Audi A6 C8 Antenna Aerial Amplifier AMP 4K9035225B

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9857620

Door Wiring Mini F60 Cable Loom Rear Left Right N/O/S Harness 9857620

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2075405205

Mercedes W207 Door Cable Wiring Loom Front Left Right Door N/O/S A2075405205

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6837359

Air Module BMW F01 LCI F07 F10 F11 F22 F25 Control ECU 6837359

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7382536-2

Mini Countryman F60 Cooper SE ALL4 Charging Socket Trim Hybrid Charger 7382536

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

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