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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Mini F55 F56 F57 Central Cover Information Instrument Radio 9367672

€56.95

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Part no. 9277812

BMW 2 Series F23 Convertible Rear Trunk Tailgate Antenna Aerial DAB 9277812

€67.95

Free delivery: Sep 14 – 15

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Part no. 4H0035670R

Audi A8L 4H Multimedia Radio Sat Nav CD Player SD SIM Head Unit 4H0035670R

€455.95

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If paid before 14:00

Part no. 7575438

BMW E90 E91 E92 E93 F10 F11 Wiring Harness Valve Pressure Sensor N53 7575438

€28.95

Free delivery: Sep 14 – 15

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Part no. 8H22-10E889-AC

Range Rover L320 Dashboard Sat Navigation Nav Display Screen 8H22-10E889-AC

€37.95

Free delivery: Sep 14 – 15

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Part no. 4K8971036K

Audi A6 C8 Door Trim Panel Wiring Harness Loom Front Left N/S 4K8971036K

€42.95

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Part no. 5B702D3

BMW F74 Gran Coupé Fuel Pump Module Control Unit 5B702D3

€113.95

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Part no. 7525434

Mini R52 R53 W11 Battery Cable Wire Harness Starter Base B 7525434

€23.95

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Part no. 06L911024

Audi A4 B9 A5 F5 Starter Motor DENSO 12V 06L911024

€23.95

Free delivery: Sep 14 – 15

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Part no. 04L903017

Audi A4 S4 8K A5 S5 8T 8F Alternator 150A 14V 2.0 TDI Diesel CGLC 04L903017

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469009802

Mercedes W176 Radio Control Function Button Knob Controller Unit A2469009802

€23.95

Free delivery: Sep 14 – 15

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Part no. HPLA-19C244-AB

Range Rover Sport L494 Infotaiment Module Mount Bracket HPLA-19C244-AB

€23.95

Free delivery: Sep 14 – 15

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Part no. JPLA-14A073-BB

Range Rover Sport L494 Fuse Relay Box JPLA-14A073-BB

€66.95

Free delivery: Sep 14 – 15

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Part no. M8D2-14A073-BA

Land Rover Range Rover Evoque L551 Fuse Box 2.0 Diesel Electric M8D2-14A073-BA

€42.95

Free delivery: Sep 14 – 15

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Part no. 6952987

BMW 5 6 Series E60 E61 E63 Driver Side Door Airbag Control Unit Module 6952987

€23.95

Free delivery: Sep 14 – 15

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Part no. 5A52C23

BMW X1 U11 Electric Wiring Harness Cable 5A52C23

€23.95

Free delivery: Sep 14 – 15

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Part no. A1635401030

Mercedes W163 Positive Cable Alternator Battery Starter Wire Harness A1635401030

€56.95

Free delivery: Sep 14 – 15

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Part no. A2533402600

Mercedes X253 Hybrid GLC Battery Electrical Wiring Harness A2533402600

€23.95

Free delivery: Sep 14 – 15

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Part no. 7PP035620B

Porsche Cayenne 92A GPS Vehicle Location Tracker Control Unit Module 7PP035620B

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0003427200

Mercedes EQA350 H243 4matic Electric Voltage Converter Module A0003427200

€408.95

Free delivery: Sep 14 – 15

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Part no. 9390501

BMW 3 4 Series F31 F32 F80 M3 F82 M4 LCI USB Charger Adapter Socket 9390501

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2059004321

Mercedes W205 X253 Front Right O/S Door Control Unit Module A2059004321

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7812500

BMW E60 E61 LCI N47 520d 177HP Engine Control ECU DDE Kit 7812500 Automatic

€104.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9069001004

Mercedes Sprinter W906 Digital Tachograph Tachometer Control Module A9069001004

Product currently unavailable

Part no. 5A923C4

BMW F40 G20 G21 G30 G31 X3 G01 HiFi Audio Sound Amplifier RAM Module 5A923C4

€180.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. CV1T-14B533-AF

Ford Fiesta Mk7 Front Door Control Unit Module Passenger Side CV1T-14B533-AF

€23.95

Free delivery: Sep 14 – 15

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Part no. BV61-12A650-NF

Ford Focus Mk3 1.6 TDCi 115HP T1DA Engine Control Unit ECU BV61-12A650-NF Manual

€66.95

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Part no. 5N0035552K

VW Tiguan 5N Antenna Amplifier Module Control Right O/S Unit 5N0035552K

€23.95

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Part no. A2059004021

Mercedes W205 GLC X253 Door Module Control Unit Front Left N/S A2059004021

€28.95

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Part no. 8V4T-14B006-AA

Ford Focus Mk3 Control Unit Crash Impact Sensor Air Module 8V4T-14B006-AA

€23.95

Free delivery: Sep 14 – 15

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Part no. CPLA-14B006-AA

Range Rover L405 Air Module Crash Impact Sensor CPLA-14B006-AA

€23.95

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Part no. 0E02320113

Mercedes W205 Electrical Cable Wiring Loom Harness Cabling 0E02320113

€23.95

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Part no. A2829062000

Starter Motor Mercedes C118 W177 C247 Petrol OM282 Starter Motor A2829062000

€66.95

Free delivery: Sep 14 – 15

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Part no. 9225831

BMW F07 Left N/S Central Bass Loud Speaker Stereo System Unit 9164581

€23.95

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Part no. 7559811

Earth Ground Cable BMW E60 E61 E63 N62N 540i 550i 650i Battery Starter Wiring

€23.95

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Part no. 8W0906093D

Audi A4 B9 Fuel Pump Control Unit Module ECU 8W0906093D

€23.95

Free delivery: Sep 14 – 15

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Part no. 8672239-2

BMW F10 M5 F12 F13 M6 S63N 560HP Engine Control Unit ECU 8672239 Automatic

€522.95

Free delivery: Sep 14 – 15

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Part no. 5A98AC9

BMW F74 Steering Gear Rack Wiring Loom Harness Cable 5A98AC9

€66.95

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Part no. 7805808

Cooling Water Pump BMW E46 E60 E61 E87 E90 E91 Mechanical Coolant 7805808

€23.95

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Part no. 1717344

Ford Kuga Mk1 Antenna Aerial Wiring Harness Adapter BV4T-18A886-AA

€28.95

Free delivery: Sep 14 – 15

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Part no. 6866254

BMW F40 F45 Mini F56 SAS Module Steering Angle Sensor Control Unit ECU 6866254

€137.95

Free delivery: Sep 14 – 15

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Part no. HK62-14B673-AC

Range Rover Sport L494 Boot Lid Tailgate Power Control Module HK62-14B673-AC

€23.95

Free delivery: Sep 14 – 15

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Part no. RMHPLA-19C216-AA

Range Rover Sport L494 Multimedia Radio Navigation Head Unit HPLA-19C216-AA

€1,348.95

Free delivery: Sep 14 – 15

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Part no. 3403208

BMW X3 Series E83 Ultrasonic Alarm System Module Control Unit 3403208

€33.95

Free delivery: Sep 14 – 15

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Part no. 5K0959434A

Volkswagen Sharan 7N Keyless Kessy Control Module ECU Unit 5K0959434A

€23.95

Free delivery: Sep 14 – 15

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Part no. 9442274

BMW F70 U06 Antenna Trap Circuit Amplifier Booster Unit Diversity 9442274

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6912244

BMW Z4 E85 Rear Bumper Antenna Mounted Aerial Unit FM 6912244

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2044400605

Mercedes W204 Wiring Loom Cable Harness Door Front Left N/S A2044400605

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2045401710

Mercedes W204 Front Door Wiring Loom Harness Left N/S A2045401710

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 05E907309H-1

Seat Leon 5F Mk3 1.5 TSI DPBA 130HP Engine Control ECU Kit 05E907309H Manual

€132.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1668201089

Mercedes W176 Radio Aerial Antenna Amplifier Booster Unit Module A1668201089

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0005406904

Mercedes X253 Ground Line Battery Earth Cable Wire A0005406904

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9060005999-1

Mercedes Sprinter W906 Front Door Wiring Harness Left Right N/O/S A9060005999

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P5971694D

Porsche Cayenne 92A Rear Door Wiring Harness Loom Cable Right O/S 7P5971694D

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. K8D2-19C279-BE

Range Rover Evoque L551 Radio Media Headunit Display Screen 10" K8D2-19C279-BE

€332.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0971230AE

Volkswagen Golf Mk7 Audi A3 S3 8V Alternator Wiring Loom 5Q0971230AE

€23.95

Free delivery: Sep 14 – 15

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Part no. 3AA971154

VW Volkswagen Passat B7 Aux Input In Wiring Plug Port Loom Harness 3AA971154

€23.95

Free delivery: Sep 14 – 15

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Part no. 7831537

BMW E46 M3 S54 Engine Ignition Coil Pack Wiring Loom Harness 7831537

€284.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7L0909606D

Volkswagen Touareg 7L Front Impact Crash Sensor Right Left N/O/S 7L0909606D

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6974245

BMW MINI Cooper Clubman R55 R55N LCi Retaining Bracket Safety Belt Rear Left N/S

€23.95

Free delivery: Sep 14 – 15

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Part no. RK72-9G768-AB

Land Rover Discovery L550 Distronic Cruise Control Module Unit RK72-9G768-AB

€237.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9284421

BMW F10 F11 Gateway Module ECU Control Unit LEAR ZGW-02 Mid 9284421

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. C1BT-14A584-DBG

Ford Fiesta Mk7 3Dr Front Door Wiring Harness Cable Right O/S C1BT-14A584-BDF

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P5971121CT

Porsche Cayenne 92A Front Door Wiring Harness Cable Loom 7P5971121CT

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9363777

BMW F45 Actve Tourer 2nd Row Seats Wiring Loom Harness Cable 9363777

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5WA962133F

Audi Volkswagen Seat Keyless Entry Module Aerial Antenna 5WA962133F

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AH22-18N379-AA

Land Rover Discovery 4 L319 Battery Tray Holder Trim Left N/S AH22-18N379-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7PP035620AE

Porsche Cayenne 92A Navigation Tracking Control Module 7PP035620AE

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9268706

BMW F01 F02 F04 F10 Rear Compartment Monitor Left Right N/O/S 9,2" Black 9268706

€427.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2465451500

Mercedes W176 Control Unit Bracket Holder Mount A2465451500

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2045403910

Mercedes W204 Brake Pad Wear Indicator Sensor Rear Axle Left N/S A2045403910

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8T8971845

Audi A5 8T Fuse Box Relay Control Unit Module 8T8971845

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 0-431-97

Durite 175A Battery Cable Wiring Harness Connector Cabling 0-431-97

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6837090

BMW G30 G31 Fuse Box Control Unit Module 6837090

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. RQT500100

Land Rover Discovery L319 Suspension ECU Control Module 2.7 276DT RQT500100

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6833650-1

BMW F39 F40 F45 F46 F48 Mini F54 F55 F56 F57 Air Quality Sensor AUC 6833650

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6421506891

Mercedes W251 R320 CDI OM642.950 224HP Engine Module ECU A6421506891 Automatic

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1648207426

Mercedes ML W164 W251 Air Module SRS Control Unit ECU A1648207426

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3C5945095H-1

VW Passat B6 Rear Tail Light Lamp Wiring Harness Cable Left N/S 3C5945095H

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 1T0035577AE

VW Volkswagen Touran 1T Aerial Antenna Amplifier Unit Module 1T0035577AE

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7515197-1

Mini Cooper One R50 W10 Battery Cable Wiring Plus Pole 7515197

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AG9T-14324-UB

Battery Cable Ford Mondeo Mk4 Negative Lead Wiring Harness Cable AG9T-14324-UC

€23.95

Free delivery: Sep 14 – 15

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Part no. A2389058501

Antenna Mercedes A205 Convertible Telephone Antenna Module A2389058501

€28.95

Free delivery: Sep 14 – 15

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Part no. 7N0907530BQ

Volkswagen Caddy Mk4 Gateway Control Module Unit ECU 7N0907530BQ

€94.95

Free delivery: Sep 14 – 15

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Part no. A2139065706-2

Porsche Cayenne S 92a Front Engine Fuse Relay Box Module Unit A2139065706

€66.95

Free delivery: Sep 14 – 15

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Part no. A6519007103

Mercedes W907 314CDI OM651.958 Engine Control Unit ECU A6519007103 Automatic

€213.95

Free delivery: Sep 14 – 15

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Part no. 83A035842A

Audi A1 GB Mk2 Multimedia Sat Nav Radio Head Unit Controller 83A035842A

€156.95

Free delivery: Sep 14 – 15

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Part no. M8D2-9L468-BBC

Range Rover Evoque L551 Wiring Loom Harness Cable M8D2-9L468-BBC

€42.95

Free delivery: Sep 14 – 15

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Part no. 7PP962132A

Porsche Cayenne 92A Keyless Entry Antenna Module Control Unit 7PP962132A

€23.95

Free delivery: Sep 14 – 15

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Part no. 5B4A355

BMW X1 U11 X2 U10 Front Passenger Side Door Control Unit Module 5B4A355

€104.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0937085T

Volkswagen Golf Mk7 Body Control Module BCM 2.0 TFSI 5Q0937085T

€75.95

Free delivery: Sep 14 – 15

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Part no. A2479004707

Mercedes W177 Dynamic Adaptive Suspension System Control Unit Module A2479004707

€99.95

Free delivery: Sep 14 – 15

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Part no. 259901385R

Smart Fortwo C453 Central Electronic Control Unit Module ECU 259901385R

€66.95

Free delivery: Sep 14 – 15

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Part no. 8V21-19G525-AB

Ford Fiesta Mk7 Tyre Inflator Air Compressor Emergency Pump 8V21-19G525-AB

€23.95

Free delivery: Sep 14 – 15

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Part no. 04L906021CK

Audi Q5 8R 2.0 TDI CNHA Quattro 190HP Engine Unit ECU Kit 04L906021CK Automatic

€450.95

Free delivery: Sep 14 – 15

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Part no. AM5T-18B955-DJ

Ford Focus Mk3 Navigation Screen Multifunction Radio Display AM5T-18B955-DJ

€189.95

Free delivery: Sep 14 – 15

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Part no. 9798377-1

BMW F45 LCI 225xe B38X B38A15A 224HP Engine ECU DME Kit 9798377 BDC + Key

€379.95

Free delivery: Sep 14 – 15

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Part no. 9118468

BMW X5 X6 Series E70 E71 Seat Backrest Adjustment Adapter Lead Cable 9118468

€23.95

Free delivery: Sep 14 – 15

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Part no. 04L906021CA

Audi A4 B8 2.0 TDI CSUA 150HP Engine Control Unit ECU 04L906021CA Automatic

€142.95

Free delivery: Sep 14 – 15

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