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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Audi A6 C8 Transfer Box Control Unit Four-Wheel Drive Module ECU 0CJ927749A

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X23-12B522-AC

Jaguar XF 250 Engine Unit ECU Mount Bracket Carrier Housing Base 8X23-12B522-AC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9366339

BMW G32 GT Door Wiring Harness Loom Cable Rear Left Right N/O/S 9366339

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HK83-14D619-BB

Land Rover Discovery L550 Door Module Control Unit Rear Left N/S HK83-14D619-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. ET76-14A584-BAJ

Ford Transit Courier Front Door Wiring Loom Harness ET76-14A584-BAJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0915418F

VW Volkswagen Golf Mk6 HV Battery Jacket Cover Housing 1K0915418F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6954871-1

BMW E87 E87 LCI E90 E91 E92 Stereo Audio Central Bass Speaker Left N/S 6954871

€23.95

Free delivery: Nov 12 – 13

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Part no. 1382566

BMW E61 E60 E63 E64 X3 E83 E46 Socket Housing 15 Pin Adapter Wiring 1382566

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03P903023H

Seat Ibiza 6J Skoda Fabia Roomster 5J VW Polo 6R Alternator 03P903023H

€89.95

Free delivery: Nov 12 – 13

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Part no. 9205269

BMW X5 E70 X6 E71 Mini Cooper R55 R56 R57 6 Disc CD Changer 9205269

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9237709

BMW F20 F21 Interior Door Lightning LED Control Module Unit 9237709

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9203304

BMW X5 Series E70 Cable Loom Door Rear Left Right N/O/S Wiring Harness 9207857

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2011602-1

Ford Transit Custom Mk1 Crankshaft Position Sensor Control Unit GK2A-6C315-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. YTA101880

Land Rover Freelander L314 Battery Cable Positive Live Lead YTA101880

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0051510Q

Audi A5 8T A6 C7 USB Adapter Port Socket Connector Cable Wiring 4F0051510Q

€23.95

Free delivery: Nov 12 – 13

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Part no. GJ32-14D374-AB

Range Rover Evoque L538 Air Module Control Unit GJ32-14D374-AB

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2S6T-432A98-AF

Ford Fiesta St Mk5 Tailgate Trunk Boot Lid Lock Actuator Solenoid 2S6T-432A98-AF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GK62-14E110-AA

Range Rover Sport L494 Tailgate Handsfree Motion Sensor Unit GK62-14E110-AA

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1378238

BMW E60 E63 E87 E90 E91 Relay Make Contact Orange 1378238

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2124400706

Wiring Harness Mercedes W212 LED Lighting Air Nozzle Cable A2124400706

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YWC500440

Range Rover Sport L320 Xenon Ballast Control Unit Module YWC500440

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9205476

BMW 1 Series E81 E87 LCI Positive Battery Lead Distribution Box Cable Rear

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2038219751-1

Mercedes-Benz C-Class W203 Alarm Sensor Module Unit A2038219751

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6971121N

Volkswagen Touareg 7L Front Door Wiring Loom Harness Passenger's Side 7L6971121N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 82G971688F

Audi A1 GB Mk2 Rear Door Wiring Loom Harness Cable Right O/S Side 82G971688F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14633-CC

Range Rover L538 Rear Door Wiring Loom Harness Cable Right O/S BJ32-14633-BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6865300

BMW F20 F22 F30 F32 F36 Air Module Control Module ICM Plus Unit 6865300

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9376789

BMW F39 F45 F48 Mini F60 Positive Battery Wiring Cable 9376789

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2189058500

Mercedes CLS X218 Antenna Amplifier Rear Aerial Control Module A2189058500

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V5114A175AA

Ford Fiesta Mk7 Fuse Relay Box Control Module 8V51-14A175-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. 9267465

BMW F01 Body Control Module ECU Junction Box V5 PL6 JBBFE III Lear 9267465

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR133623

Land Rover Discovery L550 Positive Plus Battery Wiring Cable L8D2-14N170-CB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-18C815-VV

Ford Fiesta MK8 Radio Audio Head Unit Sat Nav Control Module H1BT-18C815-VV

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8680374-2

BMW F40 F44 Gran Coupé X1 F48 F56 Alternator Generator 14V 180A DENSO 8680374

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7PP919193DP-1

Porsche Cayenne S 92A Radio Navigation Head Unit Display Screen 7PP919193DP

€493.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 1Y0951177

VW Volkswagen New Beetle Alarm Motion Detector Sensor Module Unit 1Y0951177

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0941817A

Audi RS4 B8 Front Door Wiring Harness Loom Plug Socket 4E0941817A

€23.95

Free delivery: Nov 12 – 13

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Part no. CX23-14516-AB

Jaguar XF X250 Positive Battery Lead Cable Wiring Harness CX23-14516-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1ET-13N064-AB

Ford Focus Mk3 Steering Column Stalk Slip Mount Bracket Module F1ET-13N064-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9X2Q-12A650-PAF

Land Rover L319 3.0 TDV6 245HP Engine Control Unit Module ECU 9X2Q-12A650-PAF

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BH22-14632-DA

Land Rover Discovery 4 L319 Rear Door Wire Harness Loom Right O/S BH22-14632-DA

€56.95

Free delivery: Nov 12 – 13

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Part no. 9855631

BMW U06 U10 U11 F70 F74 Battery Tray Clamping Mount Holder Retainer 9855631

€51.95

Free delivery: Nov 12 – 13

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Part no. 8642682

BMW 3 Series F30 LCI 330e Negative Earth Cable High Voltage Battery 8642682

€32.95

Free delivery: Nov 12 – 13

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Part no. A1729007408

Mercedes SLK R172 Player Radio Audio Navi Head Unit CD A1729007408

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2669000300-2

Mercedes W169 W245 M266.920 95HP Engine Control ECU Kit A2669000300 Automatic

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0915181F

Audi A6 C8 50 TFSIe Hybrid Negative Battery Wiring Terminal Monitor 4K0915181F

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WB959107A

Skoda Octavia Mk4 Tailgate Control Module Unit ECU 5WB959107A

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0951253-2

Audi VW Volkswagen Seat Relay 643 Unit Module 4 Pins Set X3 8K0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8589145-19

BMW F36 190 HP 420d B47 Engine Control Unit ECU KIT Diesel 8589145 Automatic

€560.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Q0951177A

VW Volkswagen Eos 1F Radar Motion Sensor Control Unit Module 1Q0951177A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-18C847-AA

Ford Fiesta Mk8 Aerial Antenna Amplifier Module H1BT-18C847-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479002513

Telematic Control Module Mercedes W447 W907 W910 Telematics Unit A2479002513

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-70718-SE

Land Rover Range Rover Sport L494 Telematics Control Module ECU HPLA-70718-SE

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0953549C

Audi A3 8P Steering Wheel Position Angle Sensor Control Unit Module 8P0953549C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9193758

Dashboard Monitor BMW E60 E63 E90 E91 LCI Dash Display Screen 6,5" 9193758

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5293147-4

Relay Glow Littlefuse Mega Fuse 450 A Amp 5293147

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9199491

BMW Mini Clubman R55 Cable Wiring Loom Splitdoor Door Rear Left N/S 9199491

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K0971813B

VW Volkswagen Caddy 2k Ultrasound Sensor Alarm Sensor Pearl Grey 2K0971813B

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A088E6

BMW G20 Engine Control Unit ECU 258 HP 330i B48D 5A088E6 Automatic

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9289374

BMW X5 X6 F15 F85 F16 F86 Front Battery Fuse Box Positive Distribution Terminal

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048704626

Door Module Mercedes W204 Rear Right O/S Control Unit Module A2048704626

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6809539

Mini Cooper One F55 Door Cable Wiring Loom Harness 6809539

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 912034H670

Hyundai H-1 Fuse Box Front Relay Engine Control Unit Module ECU 91203-4H670

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5F4035225

Seat Leon Mk3 Antenna Amplifier Module AM/FM Left N/S Aerial Booster 5F4035225

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0910732F

Volkswagen Caddy SB Bluetooth Module Control Unit 4E0035723

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2105450703

Mercedes CL203 W210 R170 Wiring Loom Harness Plug Connector A2105450703

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. Q0004764V004000000

Smart C450 Rear Hatch Wiring Harness Door Cable Q0004764V004000000

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009062103

Mercedes W205 Alternator Generator Petrol Engine Valeo 150A 14V A0009062103

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971035A

Audi A5 8T Coupe Front Door Wiring Loom Harness Driver's Side 8T0971035A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1740590

Ford Focus Mk3 Battery Wire Loom Harness Fuseable Link AV6N-10C679-DC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906016GJ-1

Volkswagen Golf V 1K 2.0 SDI BDK 75HP Engine Control ECU Kit 03G906016GJ Manual

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 079971627AF

Audi S6 C7 Engine Wiring Loom Harness Electrical Cable CTGE 079971627AF

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K8D2-14A076-CB

Land Rover Discovery Sport L550 Fuse Relay Box Cover Lid Panel K8D2-14A076-CB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T18D815GD

Ford Transit Custom MK8 Radio Stereo Audio USB Head Unit Panel BK2T18D815GD

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 518971856

Volkswagen T-Roc Audi Q3 F3 Gateway Control Unit Bracket Mount 518971856

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9289587

BMW 2 X1 Series F45 F48 Radio Antenna Amplifier Suppression Filter 9289587

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AM51-10718-AA

Ford Focus MK3 Battery Holder Bracket Mount Strap Clamp AM51-10718-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5315135

Ford Ranger Lim Media Hub Interface Module USB SD Card Audio Video Jacks 5315135

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X23-14A686-AA

Jaguar XF X250 Impact Crash Sensor Left Right N/O/S 8X23-14A686-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HEV30A

Littelfuse HEV30A Bolt Down Ceramic Fuse Power Relay Electrical Unit

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. Q0011881V002000000-1

Smart Roadster W452 Electronic Power Steering EPS Control Unit Q0011881V002

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EW93-19C164-AB

Range Rover Evoque L538 Speaker Audio Amplifier Module Unit EW93-19C164-AB

€246.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9225830

BMW F07 Right O/S Central Bass Loud Speaker Stereo System Unit 9164582

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR040105

Land Rover Freelander 2 L359 Rear Bumper PDC Wiring Loom Harness DH52-15K868-AC

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DK62-14633-BE

Range Rover Sport L494 Door Wiring Harness Keyless Rear Left N/S DK62-14633-BC

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5035225N

Porsche Cayenne 92A Rear Anetenna Aerial Amplifier Module Right O/S 7P5035225N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971235A

Audi A4 B9 Negative Battery Terminal Cable Harness Wiring Loom 8W0971235A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6J4971161B

Seat Ibiza 6J Door Wiring Harness Loom Cable Front Rear Left N/S 6J4971161B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465453740

Mercedes-Benz A B Class W176 W246 Rear Fuel Pump Control Unit Bracket Holder

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E1910115A

Audi A4 B7 Quattro Engine Control Unit ECU 2.0 TFSI 200HP BWE 8E1910115A

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9274369

BMW F34 GT Front Passenger Side Door Wiring Loom Cable Harness 9274369

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-18K891-AA

Ford Fiesta St Aerial Antenna Amplifier Module Isolator H1BT-18K891-AA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6841957

BMW F20 LCI F45 Mini F54 F55 F56 F57 Harman Kardon Audio Amplifier 6841957

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Citroen Relay III Parking Sensor Control Module Unit 521839170

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055455440

Mercedes C205 Keyless Go Module Unit Bracket Mount Holder Support A2055455440

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9864916

Mini Countryman F60 Front Door Wiring Harness Cable Loom Left N/S 9864916

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AC1T9K499FNA

Ford Transit Mk7 Fuse Box Loom Wiring Harness Under Bonnet Unit AC1T-9K499-FNA

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8E2-19J249-AK

Land Range Rover Evoque L551 Parking Camera Control Module ECU M8E2-19J249-AK

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AD972695

Audi A4 B7 Wiring Loom Harness Plug Socket Wiring 3AD972695

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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