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 W205 Electrical Cable Wiring Loom Harness Cabling 0E02320113

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2829062000

Starter Motor Mercedes C118 W177 C247 Petrol OM282 Starter Motor A2829062000

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9225831

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7559811

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W0906093D

Audi A4 B9 Fuel Pump Control Unit Module ECU 8W0906093D

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8672239-2

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

€522.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5A98AC9

BMW F74 Steering Gear Rack Wiring Loom Harness Cable 5A98AC9

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7805808

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1717344

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

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0959655J

Seat Leon Mk2 VW Tiguan 5N Passat CC Air Module Crash Control ECU 5N0959655J

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6866254

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

€137.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T0919603C-1

Audi A5 8T Display Screen Radio Multimedia Navigation Display 8T0919603C

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. HK62-14B673-AC

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. RMHPLA-19C216-AA

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

€1,348.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3403208

BMW X3 Series E83 Ultrasonic Alarm System Module Control Unit 3403208

€33.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5K0959434A

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9442274

BMW F70 U06 Antenna Trap Circuit Amplifier Booster Unit Diversity 9442274

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6912244

BMW Z4 E85 Rear Bumper Antenna Mounted Aerial Unit FM 6912244

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. A2045401710

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

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. A1668201089

Mercedes W176 Radio Aerial Antenna Amplifier Booster Unit Module A1668201089

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0005406904

Mercedes X253 Ground Line Battery Earth Cable Wire A0005406904

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

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 23 – 24

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 23 – 24

If paid before 14:00

Part no. 5Q0971230AE

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 3AA971154

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7831537

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

€284.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 9389330

BMW F46 Gran Tourer Door Wiring Loom Harness Rear Left Right N/O/S 9389330

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. RK72-9G768-AB

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

€237.95

Free delivery: Sep 23 – 24

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 23 – 24

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 23 – 24

If paid before 14:00

Part no. 7P5971121CT

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

€28.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 5WA962133F

Audi Volkswagen Seat Keyless Entry Module Aerial Antenna 5WA962133F

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 7PP035620AE

Porsche Cayenne 92A Navigation Tracking Control Module 7PP035620AE

€89.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. A2465451500

Mercedes W176 Control Unit Bracket Holder Mount A2465451500

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 8T8971845

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

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 6837090

BMW G30 G31 Fuse Box Control Unit Module 6837090

€142.95

Free delivery: Sep 23 – 24

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 23 – 24

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 23 – 24

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 23 – 24

If paid before 14:00

Part no. A1648207426

Mercedes ML W164 W251 Air Module SRS Control Unit ECU A1648207426

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

If paid before 14:00

Part no. 1T0035577AE

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

€23.95

Free delivery: Sep 23 – 24

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 23 – 24

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 23 – 24

If paid before 14:00

Part no. A2389058501

Antenna Mercedes A205 Convertible Telephone Antenna Module A2389058501

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2139065706-2

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

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519007103

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

€213.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 83A035842A

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

€156.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. M8D2-9L468-BBC

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

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7PP962132A

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0959795J

Porsche Cayenne 92A Rear Door Module Control Unit Left Right N/O/S 4H0959795J

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5B4A355

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

€104.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0937085T

Volkswagen Golf Mk7 Body Control Module BCM 2.0 TFSI 5Q0937085T

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2479004707

Mercedes W177 Dynamic Adaptive Suspension System Control Unit Module A2479004707

€99.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 259901385R

Smart Fortwo C453 Central Electronic Control Unit Module ECU 259901385R

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V21-19G525-AB

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L906021CK

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

€450.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. AM5T-18B955-DJ

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

€189.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9798377-1

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

€379.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9118468

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519004201-2

Mercedes GLE250 W166 OM651.960 204HP Engine ECU Kit Set A6519004201 Automatic

€284.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L5035739-1

Porsche Cayenne 9PA Rear Door Treble Speaker Audio Unit Left N/S 7E0035411B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5CU971095

Volkswagen Jetta A6 Bumper Cable Wiring Harness Loom 5CU971095

€42.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. 9348935

BMW X1 F45 F48 Mini F55 F56 F60 Air Module Control Unit Module ECU 9348935

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BJ32-14301-AD

Range Rover Evoque L538 Negative Minus Earth Battery Cable BJ32-14301-AD

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9151348

BMW F07 HV Battery Positive Terminal Lead Clamp Wire Harness Cable Loom 9151348

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G9945096B-1

Audi A6 C7 Rear Tail Light Wire Wiring Cable Right O/S 4G9945096B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0035502B

Audi A5 F5 A6 C8 Wireless Centre Console Phone Charging Module Unit 4K0035502B

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8370933

BMW 3 5 6 Series E60 E61 E63 E90 Support Bracket Navigation Computer 8370933

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03L906018CK-1

Skoda Superb B6 VW Golf 5K Engine Control Unit 170 HP 2.0 TDI CFGB 03L906018CK

€450.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7550017

Mini Cooper One Clubman R55 R56 R58 R59 R60 Starter Motor 1.6 Engine 7550017

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 070903139X

Volkswagen Transporter T5 Alternator 14V 150A 2.5 TDI AXE 070903139X 070903024A

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8W8971036E

Audi A5 S5 RS5 F5 Door Wire Harness Wiring Front Right O/S 8W8971036E 8W8971036G

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9208452

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

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469003014

Mercedes W176 W231 W246 Electric Parking Brake Control Unit Module A2469003014

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. N8B2-14B227-AB

Land Rover Defender L663 Range Rover L560 DC/DC Converter Module N8B2-14B227-AB

€949.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 420919275-BLM

Audi A5 8T Rear Bumper PDC Parking Distance Sensor Black Magic Pearl - C9Z

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03G903016L-1

Audi A6 C6 FL CAGB Diesel Engine Alternator Generator Bosch 14V 180A 03G903016L

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055409414

Mercedes C253 S205 Front Door Wiring Loom Cable Harness Right O/S A2055409414

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 07K903023F

Audi RS3 8P RSQ3 8U Alternator Generator BOSH 14V 140A 07K903023F

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0907589C

Audi A7 4G 3.0TDI CGQB 313HP Quattro Engine Control ECU 4G0907589C Automatic

€203.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9866980

BMW F20 Body Control Unit Module REM Fuse Box 9866980

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 13720856

Mercedes W212 Negative Cable Battery Terminal Wiring 13720856

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2075400009

Mercedes C204 C207 Roof Headliner Wiring Loom Harness A2075400009

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7831186

BMW E46 M3 Starter Motor Positive Battery Cable Lead Wiring Harness 7831186

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6G9T-14B192-EA

Ford Fiesta Transit Relay 4-Pin Grey FoMoCo Unit 6G9T-14B192-EA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0907280A

Audi A6 C6 On Board Onboard Supply Module Control Unit ECU 4F0907280A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7391043

BMW F10 X1 F48 Mini F54 Rear Tailgate Smart Opener Bottom Wire Sensor 7391043

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2670531

Ford Transit Custom Engine Wiring Harness Loom Manual KK2T-9K499-CCE

€123.95

Free delivery: Sep 23 – 24

If paid before 14:00

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