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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Skoda Octavia II Negative Battery Terminal Cable Wire Wiring 1K0971250

€23.95

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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 14 – 15

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

€56.95

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Part no. 9G9T14B533AC

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

€23.95

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Part no. AV6T-14K131-AC-1

Ford Focus Mk3 Fuse Relay Box Board Housing 6626RFAPF

€23.95

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Part no. A9067601304

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

€23.95

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Mercedes W245 ECU Control Unit Sensor Air Module A1698201085

€23.95

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Part no. A1779007716

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

€61.95

Free delivery: Sep 14 – 15

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Part no. 9375871

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

€23.95

Free delivery: Sep 14 – 15

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Part no. BJ32-13K031-AC-1

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

€23.95

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

€379.95

Free delivery: Sep 14 – 15

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Part no. A1765405508

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

€23.95

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

€94.95

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Part no. A2059002011

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

€47.95

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Part no. 8638198-7

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

€450.95

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Part no. 02Z911023R

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

€37.95

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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 14 – 15

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Part no. 9180402

BMW E90 Front Sport Seat Lumbar Wiring Loom Harness Cable 9180402

€23.95

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Part no. 9454245

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

€66.95

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Part no. AB39-14A076-BF

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

€99.95

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Part no. A1669061202

Mercedes W221 Fuse Box Control Unit Module Relay A1669061202

€32.95

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Part no. TSR-152

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

€37.95

Free delivery: Sep 14 – 15

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Part no. 5Q0937085AC

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

€113.95

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Part no. 9231283-AZB

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 9497858

Mini Countryman F60 Wiring Cable Loom Adapter Excitement THL 9497858

€33.95

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Part no. A9069006403

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

€465.95

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BMW E60 E61 E63 E64 Gateway Module Control Unit ECU 9157157

€37.95

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Mercedes W177 Multimedia Radio Control Module Unit ECU A2479004111

€232.95

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

€23.95

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

€23.95

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Part no. 8K0971687S

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

€32.95

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Part no. 059907309-2

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

€222.95

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Part no. 9153806

BMW F01 F02 Rear Heater Blower Motor Resistor 9153806

€23.95

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Part no. AV6N-10C679-BB

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

€23.95

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Part no. GV6T-14A073-EH

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

€99.95

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Part no. 6946108

BMW 7 Series E65 E66 E67 Sensor Rear Seat Airbag 6946108

€23.95

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Part no. 8693213

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

€189.95

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Part no. 93BB14488AB

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

€23.95

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Part no. XS7U-11000-C4A

Ford Focus Mondeo Escort 1.8 Petrol Engine Motor Starter XS7U11000C4A

€28.95

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Part no. A2769004901

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

€474.95

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

€23.95

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

€23.95

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Part no. A2469005515

Mercedes W176 Rain Light Sensor Control Unit Front Windscreen Camera A2469005515

€37.95

Free delivery: Sep 14 – 15

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Part no. K8D2-19C097-AA

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 8H2214N131CA

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 8693213-1

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

€740.95

Free delivery: Sep 14 – 15

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Part no. CPLA-17D547-AJ

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

€23.95

Free delivery: Sep 14 – 15

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Part no. LR024071

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

€80.95

Free delivery: Sep 14 – 15

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Part no. 8582803-3

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

€218.95

Free delivery: Sep 14 – 15

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Part no. 8T0971365

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

€37.95

Free delivery: Sep 14 – 15

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Part no. H1BT-15K868-ABD

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

€42.95

Free delivery: Sep 14 – 15

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Part no. L0283086

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

€47.95

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Part no. 3428336

Mini Clubman Cooper R55 Antenna Amplifier Diversity Signal Booster 3428336

€32.95

Free delivery: Sep 14 – 15

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Part no. 6900583-1

BMW 7 Series E65 E66 Cable Wire Power Distribution Box 6900583

€23.95

Free delivery: Sep 14 – 15

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Part no. 83F877041A

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

€42.95

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Part no. 2Q0937615A

Volkswagen Polo Mk6 Fuse Relay Box Power Supply Unit 2Q0937615A

€28.95

Free delivery: Sep 14 – 15

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Mercedes W204 Parking Control Unit Module ECU A2049012604

€23.95

Free delivery: Sep 14 – 15

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Part no. 46355551

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

€51.95

Free delivery: Sep 14 – 15

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Part no. A2135409616-1

Mercedes Sprinter W910 Battery Sensor Negative Terminal Cable Wiring A2135409616

€28.95

Free delivery: Sep 14 – 15

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Part no. 57A971694A

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

€56.95

Free delivery: Sep 14 – 15

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Part no. 4F0955557A

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 8734161

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

€32.95

Free delivery: Sep 14 – 15

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Part no. 8R0803123A

Audi Q5 8R Battery Hold Down Clamping Strip 8R0803123A

€23.95

Free delivery: Sep 14 – 15

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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 14 – 15

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BMW F10 F11 F25 Hands Free Microphone Grey 7212594

€23.95

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€151.95

Free delivery: Sep 14 – 15

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Part no. 059907309L-2

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

€170.95

Free delivery: Sep 14 – 15

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

€51.95

Free delivery: Sep 14 – 15

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Part no. 8K0971104

Audi A5 8T Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104

€23.95

Free delivery: Sep 14 – 15

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Parking Distance Audi A3 8V TT Mk3 Seat Leon MK3 Control Module 5Q0919283E

€23.95

Free delivery: Sep 14 – 15

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Part no. 5CH971120E

Volkswagen Jetta Mk6 Front Door Wiring Harness Cable Passenger Side 5CH971120E

€32.95

Free delivery: Sep 14 – 15

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Part no. 4H0941824

Audi A6 C8 Fuse Box Relay Plug Socket Fuse Unit Holder Bracket 4H0941824

€23.95

Free delivery: Sep 14 – 15

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Part no. A2055408987

Mercedes W205 Exhaust Wiring Harness Cable A2055408987

€23.95

Free delivery: Sep 14 – 15

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Part no. 6878191

Air Module BMW F01 F02 LCI F10 F11 F13 ECU ICM Control Unit 6878191

€28.95

Free delivery: Sep 14 – 15

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Part no. 6902265

BMW E65 E66 E67 Compact Base Support System Rear Black 6902265

€23.95

Free delivery: Sep 14 – 15

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Part no. A4145401130

Mercedes Vaneo W414 Starter Wiring Harness Battery Ground Cable A4145401130

€37.95

Free delivery: Sep 14 – 15

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BMW F20 LCI F21 LCI F83 Telematics Communication Module Ecu Control Unit 6809310

€189.95

Free delivery: Sep 14 – 15

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Part no. A2059001611

Mercedes W205 Door Module Front Right O/S Control Unit ECU A2059001611

€23.95

Free delivery: Sep 14 – 15

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Part no. A2515400524

Mercedes W251 Fuse Relay Electrical Box Housing Cover A2515400524

€28.95

Free delivery: Sep 14 – 15

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Part no. 9340524

BMW X3 F25 X4 F26 Central Gateway Module Control Unit Lear ZGW-02 4SK 9340524

€56.95

Free delivery: Sep 14 – 15

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Part no. 4G0919129A

Audi A5 8T A6 C7 A7 4G A8 4H TV Tuner Digital Video Control Module 4G0919129A

€70.95

Free delivery: Sep 14 – 15

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Part no. 4L0035225AJ

Audi Q7 4L Radio Aerial Antenna Amplifier AM/FM 4L0035225AJ

€23.95

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Part no. A2125404600

Mercedes W212 AMG Front Bumper Parking Sensor PDC Wiring Harness A2125404600

€75.95

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Part no. NX63-7C078-AA

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€32.95

Free delivery: Sep 14 – 15

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Audi A3 8P Gateway Module Control Unit Gateway Module ECU 8P0907530A

€23.95

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BMW 1 3 4 F20 F21 F30 F31 F32 Power Distribution Fuse Box Rear 9337881

€23.95

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Part no. 4H0907401H-1

Audi A8 D4 3.0 TDI Quattro CDTA 258HP Engine ECU Kit 4H0907401 BCM + Key + Lock

€332.95

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€23.95

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Part no. 4F0959794A

Audi A6 S6 Avant Quattro 4F Door Control Unit ECU Rear Right O/S 4F0959794A

€23.95

Free delivery: Sep 14 – 15

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Skoda Karoq Front Headlight Headlamp LED Lamp Light Wiring Left N/S 57C941009

€23.95

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Mini R60 R61 Instrument Cluster Speedometer Display Screen Android 8" Radio

€569.95

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Mercedes W205 BCM Body Control Module Unit ECU A2059007339

€42.95

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Part no. 7640755-8

BMW F20 116i N13 136HP ECU Module Unit Kit DME 7640755 Key + FEM + Lock Manual

€469.95

Free delivery: Sep 14 – 15

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Range Rover Velar L560 Batter Wiring Loom Connector Plug M8A2-14A390-KA

€23.95

Free delivery: Sep 14 – 15

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€23.95

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Mercedes W251 Tail Light Lamp Side Panel Harness Loom Rear Right O/S A2518202064

€23.95

Free delivery: Sep 14 – 15

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€137.95

Free delivery: Sep 14 – 15

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€23.95

Free delivery: Sep 14 – 15

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€23.95

Free delivery: Sep 14 – 15

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