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-Benz A B W169 W245 Door Cable Harness Wiring Loom Rear Left Right

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8P4971693T

Audi A3 8P Door Wiring Harness Loom Cables Rear Left Right N/O/S 8P4971693T

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G8959795G

Audi A6 C7 Rear Door Control Module Unit ECU Left Right N/O/S 4G8959795G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8678960

Mini Cooper S F55 F56 F57 F60 Valvetronic Wiring Cable Loom Harness 8678960

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129003922-1

Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129003922

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2669000200

Mercedes W245 B180 266.940 Engine Control Module ECU A2669000200 Automatic

€222.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L0971767A

Porsche Cayenne 9PA Windscreen Washer Wiring Loom Cable 7L0971767A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055404045

Mercedes S205 Rear Parking PDC Wiring Harness Loom A2055404045

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2709000900-9

Mercedes W176 A45 4Matic M133.980 381HP Engine Control ECU A2709000900 Automatic

€427.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2758591-2

Mini R55 R56 Bi-Xenon Headlight Lamp Left N/S Harness Wiring Cable 2758591

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0962131

Antenna Control Module Audi Q3 RSQ3 F3 Line Keyless Entry 5Q0962131

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0971727

Audi A6 C8 Pressure Sensor Wiring Loom Harness Cable 4K0971727

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9326404

BMW F34 Front Door Wiring Loom Harness Cable Driver Side 9326404

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4L0907355B-1

Audi Q5 8R Adblue Metering Control Module Unit ECU 4L0907355B

€23.95

Free delivery: Sep 23 – 24

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Part no. 9314399

BMW X5 F15 Front Seat Wiring Loom Harness Cable Right O/S 9314399

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V4T-14297-AAB

Ford Kuga C394 Heated Windscreen Wire Harness Cable Loom 8V4T-14297-AAB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. YML500463

Land Rover Discovery 3 L319 Electric Wiring Harness Cable YML500463

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V41-13D155-BF-2

Ford Kuga Mk1 Xenon Headlight Lamp Left N/S Wire Harness Cable 8V41-13D155-BF

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. LR047579

Range Rover Evoque L538 Alternator 14V 215A 2.2 TDCI Diesel LR047579

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2048703996

Mercedes W204 Multimedia Audio CD Player Radio Head Unit A2048703996

€322.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8661796

BMW G11 G12 G20 G21 G30 G31 High Voltage Plug Cover Housing 8679679

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0035342G-1

VW Scirocco Mk3 Polo Mk5 Multimedia Electronic Control Module ECU 5N0035342G

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6960219

Airbag Module BMW E65 E66 Airbag A-Pillar Sensor Left N/S Control Unit 6960219

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8707828

BMW G20 G30 Hybrid Battery Charge Control Module Unit ECU 8707828

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8865047

Bmw X1 U11 Low Voltage Wiring Harness Cable Loom 8865047

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0055461340-1

Mercedes Vito W447 Energy Distributor Plug Module A0055461340

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V4971030H

Audi S3 8V 5Dr Front Door Wiring Harness Loom Passenger Side 8V4971030H

€23.95

Free delivery: Sep 23 – 24

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Part no. 7N0951253

VW Volkswagen Scirocco Mk3 Power Starter Motor Relay 12V 50A Plug 7N0951253

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0971250

Skoda Octavia II Negative Battery Terminal Cable Wire Wiring 1K0971250

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BK21-13404-AG-2

Ford Transit Custom Rear Tail Light Wiring Harness Cable Right O/S BK21-13404-AG

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6874337-1

BMW F10 F20 F30 VDC Rear M Sport Suspension Control Unit Module 6874337

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9G9T14B533AC

Mercedes W204 Front Door Control Unit Module Right O/S 9G9T-14B533-AC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. AV6T-14K131-AC-1

Ford Focus Mk3 Fuse Relay Box Board Housing 6626RFAPF

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009003500-1

Mercedes W204 W212 Fuel Pump Module Control Unit ECU AMG C63 A0009003500

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9067601304

Mercedes-Benz Sprinter W906 Front Right Door O/S Handle Bowden Pull Cable

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1698201085

Mercedes W245 ECU Control Unit Sensor Air Module A1698201085

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1779007716

Mercedes W177 Front Door Control Module Left Right N/O/S Unit ECU A1779007716

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9375871

MINI Cooper F56 Front Right O/S Driver Side Door Wire Wiring Loom 6809470

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BJ32-13K031-AC-1

Range Rover Evoque L538 Headlight Control Module Unit BJ32-13K031-AC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06N907309A-1

Audi A4 B9 8W 35 TFSI DMSB 150 HP Engine ECU Kit Body + Key 06N907309A Automatic

€379.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1765405508

Mercedes-Benz A-Class W176 Front Door Cable Wiring Loom Harness A1765405508

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9257494

BMW X3 F25 Stereo Radio Sat Nav Head Unit CD Player 9257494

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059002011

Mercedes W205 Rear Door Control Module Unit Right O/S ECU A2059002011

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8638198-7

BMW F20 F30 116i 316i N13 136HP Engine ECU Kit DME 8638198 FEM Key Automatic

€450.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 02Z911023R

Audi A3 8P VW Golf 5k Starter Motor 1.4 TFSI CAXC Petrol 02Z911023R 0001142003

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GOLF-5K-SCREEN-1

VW Golf Mk5 Mk6 Passat B6 B7 Car Radio Display MMI Multimedia Touch Screen 7"

€132.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9180402

BMW E90 Front Sport Seat Lumbar Wiring Loom Harness Cable 9180402

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9454245

Differential Locking Module BMW F90 M5 G20 Rear Axle Control Unit ECU 9454245

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. AB39-14A076-BF

Ford Ranger Mk6 Fuse Box Control Unit Housing Cover Trim Panel AB39-14A076-BF

€99.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1669061202

Mercedes W221 Fuse Box Control Unit Module Relay A1669061202

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. TSR-152

BMW E88 Cabrio Convertible Battery Control Unit Module ECU 12V TSR-152

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0937085AC

VW Volkswagen Golf GTI Mk7 Body Control Module BCM CHHN Automatic 5Q0937085AC

€113.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9231283-AZB

BMW E70 F10 F11 PDC Parking Sensor Ultrasonic Sensor Azurit Black - S34 9231283

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9497858

Mini Countryman F60 Wiring Cable Loom Adapter Excitement THL 9497858

€33.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9069006403

Mercedes W906 Electrical Center Fuse Box SAM Body Control ECU Module A9069006403

€465.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9157157

BMW E60 E61 E63 E64 Gateway Module Control Unit ECU 9157157

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2479004111

Mercedes W177 Multimedia Radio Control Module Unit ECU A2479004111

€232.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. M8A2-14A067-CA

Range Rover Velar L560 Fuse Box Cover Bracket Housing 6G9T-14A067-AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3449920

BMW X3 E83 LCI Adapter Lead Interior Lighting Rear Left Right N/O/S 3449920

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0971687S

Audi A4 B8 Door Wiring Harness Loom Rear Left N/S Cabling 8K0971687S

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059907309-2

Audi S5 F5 3.0 TDI DMKC 341 HP Engine Control Module Unit 059907309AC Automatic

€222.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9153806

BMW F01 F02 Rear Heater Blower Motor Resistor 9153806

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. AV6N-10C679-BB

Ford Focus Mk3 Negative Battery Terminal Cable Electrical Wiring AV6N-10C679-BB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GV6T-14A073-EH

Ford Focus Mk3 Transit Connect Mk2 Body Control Module BCM GV6T-14A073-EH

€99.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6946108

BMW 7 Series E65 E66 E67 Sensor Rear Seat Airbag 6946108

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8693213

BMW F30 LCI 330i B48X Engine Control 184HP 2.0 Petrol Hybrid Manual 8693213

€189.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 93BB14488AB

Ford Focus Mk2 Starter Motor Engine Actuator Cable Wiring Unit 93BB14488AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. XS7U-11000-C4A

Ford Focus Mondeo Escort 1.8 Petrol Engine Motor Starter XS7U11000C4A

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2769004901

Mercedes A238 Convertible E450 M276.823 Engine ECU Unit A2769004901 Automatic

€474.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0959792R

Audi Q5 8R Door Module Control Unit Front Passenger Side 8K0959792R

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8581751

BMW F40 MINI F56 F57 F60 Engine Control Unit ECU Box Top Cover Shield 8581751

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469005515

Mercedes W176 Rain Light Sensor Control Unit Front Windscreen Camera A2469005515

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. K8D2-19C097-AA

Land Rover Discovery Sport L550 Aerial Antenna Control Module K8D2-19C097-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8H2214N131CA

Land Rover Discovery 4 Driver's Seat Memory Wiring Loom Harness 8H22-14N131-CA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8693213-1

BMW F30 LCI 330e B48X Engine Control Unit ECU Kit DME 8693213 FEM Key Automatic

€740.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CPLA-17D547-AJ

Land Rover Discovery Sport L550 Windscreen Rain Sensor Module CPLA-17D547-AJ

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. LR024071

Range Rover L322 Car Ignition Key Remote Control 433.92MHZ LR024071 AH4215K601BF

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8582803-3

BMW X5 F15 N57N 258HP Engine Control Module Unit ECU DDE Kit 8582803 Automatic

€218.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T0971365

Audi A4 B8 Seat Occupancy Belt Alarm Wire Wiring Cable Loom Harness 8T0971365

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. H1BT-15K868-ABD

Ford Fiesta MK7 MK8 Rear Parking Sensor PDC Wiring Loom Harness H1BT-15K868-ABD

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. L0283086

Range Rover L405 Rear Seat Bench Cooler Blower Unit Right O/S L0283087AA

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3428336

Mini Clubman Cooper R55 Antenna Amplifier Diversity Signal Booster 3428336

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6900583-1

BMW 7 Series E65 E66 Cable Wire Power Distribution Box 6900583

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 83F877041A

Audi Q3 F3 Mk2 Panoramic Sunroof Control Unit Module ECU 83F877041A

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5A9CA29

BMW F70 F74 F78 G60 G61 G68 G70 X2 U10 X1 U11 Rain Sensor 5A9CA29

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2Q0937615A

Volkswagen Polo Mk6 Fuse Relay Box Power Supply Unit 2Q0937615A

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2049012604

Mercedes W204 Parking Control Unit Module ECU A2049012604

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 46355551

Vauxhall Movano C Toyota Proace Max Preheating Box Glow Plug Relay 46355551

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2135409616-1

Mercedes Sprinter W910 Battery Sensor Negative Terminal Cable Wiring A2135409616

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 57A971694A

Skoda Karoq NU7 Rear Door Wiring Loom Harness Cable Right O/S 57A971694A

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0955557A

Audi A6 C6 Door Crash Impact Sensor Front Left Right N/O/S 4F0955557A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8734161

BMW G20 Power Distribution Rear Fuse Relay Box 330e B48X B48B20A 8734161

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8R0803123A

Audi Q5 8R Battery Hold Down Clamping Strip 8R0803123A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BK2T-14B144-BA

Ford Transit Mk8 Battery Fuse Box Holder Housing 2.2 TDCi Diesel BK2T-14B144-BA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7212594-3

BMW F10 F11 F25 Hands Free Microphone Grey 7212594

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6429004201

Mercedes W221 BlueTec Exhaust Gas Aftertreatment Control Unit Module A6429004201

€151.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 059907309L-2

Audi S5 F5 Engine Control Unit 347HP 3.0 Diesel Electric Automatic 059907309L

€170.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 09D927750AK

Porsche Cayenne 955 9PA Automatic Gearbox Module Control Unit ECU 09D927750AK

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1664408836

Mercedes W166 Dashboard Cockpit Cable Electric Wiring Harness Loom A1664408836

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

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