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 A8L 4H Aerial Antenna Amplifier AMP Booster Module 4H0035225

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9214812

BMW E88 E93 LCI Air Module Control Unit ECU 9214812

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6837092

BMW G30 G12 Fuse Relay Box Rear Trunk Power Distribution B + Box Basis 6837092

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9350313

BMW F90 M5 G11 G30 Fuse Box Power Distribution Unit Front Right O/S 9350313

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6519004500-1

Mercedes W205 C220d 651.921 170HP BlueTEC Engine ECU Kit A6519000603 Key SAM

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9364817

BMW X1 E84 ECU Body Comfort Control Module Junction Box PL2RR JBBFE IIIR 9364817

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129001900

Mercedes W164 W204 W221 W251 Fuel Pump Module Control Unit A2129001900

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0971230FS

Skoda Superb V3 Audi A3 8V Alternator Wiring Harness Loom 5Q0971230FS

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9803844-4

Aerial Roof Antenna Mini Cooper Countryman R58 R60 R61 Base Module 9803844

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4M0907508

Audi A6 C8 Acceleration Crash Impact Sensor Control Unit 4M0907508

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1388911-2

BMW E36 E38 E85 Mini R52 R57 4x Change-Over Contact Relay Violet Set 1388911

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. H1BT-18C815-VN

Ford Fiesta MK8 Radio Head Unit Sat Nav Module H1BT-18C815-VN

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9436288

BMW G20 G21 Door Wiring Loom Harness Cable Rear Left N/S 9436288 9436287

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5E0035773

Skoda Superb 3V Audi A4 S4 8W Aerial Antenna Amplifier Module Unit 5E0035773

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DH22-14B192-CA

Range Rover Evoque L538 Relay 4-Pin Unit 12V 40A Black DH22-14B192-CA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8379375

BMW X5 E53 Loudspeaker Loud Speaker Tweeter Front 65138379375 8379375

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. N000000004325-1

Mercedes W169 W204 W211 C219 Replacement Fuse Kit Set N000000004325

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9315981

BMW F33 F33 LCI Seat Wire Harness Cable Loom Front Right O/S 9315981

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7S7F-18C821-CB

Ford Transit Mk7 Sony Radio Player 6 CD Changer Head Unit 4M5T-18C815-CJ

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0025422319

Mercedes-Benz Universal HELLA Relay Module 12V 4RA 940 010 A0025422319

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8730190

BMW G30 G31 Rear Door Wiring Loom Harness Cable Right O/S 8730190

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8573260-10

BMW F20 F21 116d Diesel N47N 116HP ECU Kit DDE 8573260 + Keys + FEM Manual

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2539059800

Mercedes W205 Lid Boot Trunk Tailgate Smart Opener Control Module A2539059800

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7G9T-14B534-BE

Ford Mondeo Mk4 Door Window Control Module Rear Left Right N/O/S 7G9T-14B534-BE

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1635400734

Mercedes-Benz M ML W163 Rear Left Right Door Wiring Loom Harness A1635400734

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6C1T-14A076-AD

Ford Transit Mk7 Fuse Box Housing Lid Cover Trim 6C1T-14A076-AD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L907309L-1

Volkswagen Transporter T6 2.0 TDI CAAB 102HP Engine ECU Kit 03L907309L Manual

€203.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BK3T-19L540-DE

Ford Transit Mk8 Rear Sliding Door Wiring Loom Harness Cable BK3T-19L540-DE

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1668203426

Mercedes W166 C292 Front Seat Adjuster Module Unit Left Right N/O/S A1668203426

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3D0907539A

VW Volkswagen Phaeton 3D Dashboard Light Sun Solar Sensor Unit 3D0907539A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L5919283B

Porsche Cayenne 9PA PDC Parking Sensor Control Module Unit Controller 7L5919283B

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6819336

BMW F20 F21 F22 F30 F31 F32 F33 Fuse Box Body Control Unit Module REM V5 6819336

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4KE907468C

Audi A6 C8 Q7 4M Gateway Interface Control Unit Module ECU 4KE907468C

€237.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CPLA-15G590-AB

Range Rover L405 Wiper Motor Control Unit Module CPLA-15G590-AB

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9068270005

Mercedes W639 W906 Voltage Stabilizer Control Unit Module A9068270005

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0971226

Audi TT 8J Negative Battery Cable Lead 8J0971226

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6399001001

Mercedes W639 PDC Parking Park Sensor Distance Control Module A9064460046

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8519668

BMW E90 E91 LCI 320d N47N 184HP Engine Control Unit ECU DDE 8519668 Manual

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0971228

Skoda Superb 3V Positive Battery Wiring Cable Terminal 5Q0971228

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3419515

BMW E83 LCI Valvetronic Starter Cable Wire Loom 3419515

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7589971-1

Mini One R55 R56 N12 1.4 95HP ECU Engine Control Unit DME 7589971

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2045400150

Mercedes-Benz C E Class W204 W207 Fuse Distribution Box Interior A2045400150

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 14B296AA

Ford Transit Connect Yaw Sensor ESP Speed Sensor Control Unit Module 14B296AA

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2T1T14B321AB

Ford Transit Connect Air Module Control Unit ECU 2T1T-14B321-AB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 077450-1100

Land Range Rover Sport L320 Sun Sensor Control Unit 077450-1100

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6G9T-14K131-DB

Range Rover Evoque L538 Fuse Relay Box Module 2.2 Diesel 6G9T-14K131-DB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6912817

BMW E46 Z4 E85 E86 Antenna Amplifier Diversity 6912817

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009009639

Mercedes EQA350 H243 4matic DC Current Charge Connection Module OBL + BR293

€1,044.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7168153

BMW MINI Cooper One Clubman R55 R55N LCI Wiper Motor Window Left Rear N/S 716815

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. NNN500411

Range Rover Sport L320 4.2 V8 390HP Engine Control ECU NNN500411 Automatic

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6954298

BMW E81 E87 E90 E91 Adapter Lead Medium Range Loud Speakers 6954298

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9196935

Seat Module BMW X1 E84 E87 E90 E91 Seating Control Unit ECU 9196935

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0035186AA

VW Volkswagen Golf Mk5 Radio Control Head Unit CD Player 1K0035186AA

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2198200315

Mercedes C219 Console Car Phone Voice Control Harness Wire Loom A2198200315

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9282424

BMW 3 5 Series F10 F30 Control Unit Module Top Rear Side View Camera 9282424

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 028903018X

Audi A3 8L Seat Ibiza Mk2 VW Polo Mk3 Alternator Generator 028903018X

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9339192

BMW F45 F46 Battery Cable Positive Wire Lead Terminal 9339192

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9118468

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

€27.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2229002109

Mercedes W205 W222 Door Module Control Unit Rear Right O/S A2229002109

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8T0971035BA

Audi A5 8T Coupe Front Driver Side Door Wiring Harness Right O/S 8T0971035BA

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9282285

BMW X3 F25 Central Gateway Module Control Unit ECU 9282285

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KG9T-14B275-DD

Ford Mondeo Mk5 Heated Windscreen Rear View Mirror Wiring Cable KG9T-14B275-DD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8408383

Parking Sensor PDC BMW X5 E53 Front Cover Control Primed 8408383

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8S0035466

Audi TT FV 8S Premium Loudspeaker System Amplifier Bang & Olufsen 8S0035466

€1,329.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 059911024P

Audi A6 C7 A7 4G 2.0 TDI Starter Motor Diesel Engine Denso 059911024P

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9226325

BMW 1 E82 ECU Body Control Module L1 PL2RR JBBFE IIIR Junction Box 9226325

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0005406050

Mercedes ML W164 W169 W205 W212 Fuse Box Relay Control Unit Module A0005406050

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8572418-2

BMW X3 F25 Diesel 2.0dX 184HP N47N Engine ECU Kit DDE 8572418 Key CAS4 Automatic

€170.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9303543

BMW F20 F30 F31 Fuse Box Electrical Power Distribution 9303543

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7953075

BMW F70 F74 X1 U11 X2 U10 Mini F65 F66 Battery Alternator Starter Cable 7953075

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5H32-14632-AA

Range Rover L320 Door Wiring Loom Harness Cable Rear Right O/S 5H32-14632-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9380323

BMW 5 Series F10 Steering Column Module Electronic Control Unit ECU 9380323

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9273671

BMW 4 F33 Cabrio Convertible DAB Digital Radio Aerial Antenna Amplifier 9273671

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0919283G

Seat Ateca Skoda Fabia Mk4 Superb Mk3 Parking Distance Control Module 5Q0919283G

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8H22-14D374-AC

Land Rover Range Rover Sport L320 Air Module Ecu 8H22-14D374-AC NNW510230

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9309997

Mini F57 Cabrio Aerial Base Antenna Rod Unit AM / FM / TEL / GPS / DAB-L 9309997

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1698207226

Door Module Mercedes W169 W245 Front Right O/S Control Unit A1698207226

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5G0971104L

VW Volkswagen Golf Mk7 Wiring Loom PDC Rear Harness Parking Sensor 5G0971104L

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03D903025J-1

Seat Ibiza Volkswagen Polo Mk5 6R 1.2 Petrol Alternator Generator 03D903025J

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3V0919605E

Skoda Superb 3V Multimedia Touchscreen Multimedia Navigation Display 3V0919605E

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DG9T-14297-CE

Ford Mondeo Mk5 Front Screen Heated Jet Wire Harness Cable Loom DG9T-14297-CE

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AU5A-9D370-AG

Ford Fiesta Mk7 Fuel Pump Control Module Unit 1.6 Petrol Engine AU5A-9D370-AG

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6519003701-1

Mercedes W212 OM651.924 E220CDI 170HP Engine ECU Kit + Key + Lock A6519003701

€194.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0003427200

Mercedes EQA350 H243 4matic Electric Voltage Converter Module A0003427200

€408.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9436289

BMW G20 G21 Rear Door Wiring Loom Cable Control Unit Left Right N/O/S 8718245

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2K5972176

VW Volkswagen Caddy MK3 Trunk Boot Tailgate Wiring Cable Loom 2K5972176

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6G9T-15K602-AD

Ford Transit Mk7 Keyless Entry Receiver Control Unit Module 6G9T-15K602-AD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8691842

Mini Cooper S F57 192HP Engine Control Unit ECU B48 Petrol Engine 8691842 Manual

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 141951253B-2

VW Volkswagen Audi Seat Skoda Relay Unit 4 Pins 12V 40A 141951253B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 82G971036A

Audi A1 GB Mk2 Door Wiring Loom Harness Cable Front Passenger Side 82G971036A

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9118467

BMW X5 X6 Series E70 E71 Seat Backrest Adjustment Adapter Lead Cable 9118467

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1EA959655ET

Volkswagen Caddy SB Air Module Control SRS ECU 1EA959655ET

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8645325

Alternator BMW F20 F21 F30 F31 LCI F32 F33 F34 Petrol Engine Unit 180A 8645325

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2229001909

Mercedes W205 W222 Door Module Front Right O/S Control Unit ECU A2229001909

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DG9T-14A597-BC

Ford Mondeo Mk5 Dashboard Sun Solar Sensor Unit DG9T-14A597-BC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1765406708

Mercedes W176 Door Harness Loom Cable Wiring Rear Left Right N/O/S A1765406708

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7195768

BMW 7 Series E65 E66 E67 Battery Holder Hold Down Strap Bracket 7195768

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2709000900-8

Mercedes W246 B180 270.910 122HP ECU Wiring Loom Harness Cable Plug A2709000900

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8517862-6

BMW F20 F30 F32 120d 320d 420d N47N 184HP ECU Kit DDE 8517862 + Key + FEM Manual

€151.95

Free delivery: Aug 5 – 10

If paid before 14:00

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