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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BMW F33 F83 M4 Convertible Folding Top Roof ECU Module Control Unit CTM 7456364

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0971679B

Audi A4 B8 Glove Box Passenger Air Module Switch Wiring Harness Cable 8K0971679B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GOLF-5K-SCREEN-2

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

€237.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. A0035421019-1

Mercedes C117 GLA X156 ML W166 W176 W246 Relay 5 Pins Yellow Set A0035421019

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. JPLA-13E758-AA

Range Rover Sport L494 Door Harness Wire Front Left Right N/O/S JPLA-13E758-AA

€23.95

Free delivery: Sep 23 – 24

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Part no. 6938226

BMW 3 Series E90 E91 Cable Wiring Loom Rear Door Left Right 61126938226 6938249

€23.95

Free delivery: Sep 23 – 24

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Part no. 9428830

Mini F60 Lci Wiring Harness Control Unit Automatic Transmission GA6F21AW 9428830

€94.95

Free delivery: Sep 23 – 24

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Part no. A0005463704

Mercedes C118 Positive Pole Battery Insulating Cap Cover Trim A0005463704

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GK3T-9K499-FBC

Ford Transit Mk8 Engine Bay Fuse Box Wiring Loom Harness 2.0 GK3T-9K499-FBC

€123.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9315130

Door Wiring Harness BMW F25 Rear Left Right Door N/O/S Wiring Loom 9315130

€28.95

Free delivery: Sep 23 – 24

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Part no. A2075402013

Door Cable Mercedes W212 Wiring Loom Front Left Right Door N/O/S A2075402013

€23.95

Free delivery: Sep 23 – 24

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Part no. 7PP907530Q

Porsche Cayenne 92A Gateway Control Module Unit 7PP907530Q

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2044402232

Mercedes W204 W207 Battery Cable Positive Wiring Harness Loom A2044402232

€23.95

Free delivery: Sep 23 – 24

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Part no. 9383683

Body Domain Controller Mini F54 F55 F56 F60 ECU BDC Control Unit Module 9383683

€104.95

Free delivery: Sep 23 – 24

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Part no. 8571042

BMW X5 F15 Engine Wiring Harness Loom Wire Connector Cable 8571042

€332.95

Free delivery: Sep 23 – 24

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Part no. 7948144

BMW F40 F44 Seat Occupancy Mat Control Unit Sensor 7948144

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0959655B

Audi A6 C6 Air Module Control Unit ECU Module 4F0959655B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9143439

BMW E81 E87 E90 E91 E92 6-disc CD Changer without Magazine 9143439

€47.95

Free delivery: Sep 23 – 24

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Part no. 7P6971121H

VW Volkswagen Touareg 7P Door Wiring Loom Harness Front Left N/S 7P6971121C

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T0035223L

Audi A4 B8 A5 8T Audio Amplifier Sound Booster Control Unit Module 8T0035223L

€185.95

Free delivery: Sep 23 – 24

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Part no. 9261614

BMW 1 2 Series F20 F21 F22 Rear Bumper PDC Ultrasonic Sensor Glacier Silver

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6839355

BMW F44 Gran Coupe Antenna Amplifier Suppresion Filter 6839355

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9184810

BMW X6 E71 Wiring Set Wash Water Container Cable Loom 9184810

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CV2T-10C679-BD

Ford Fiesta Mk7 7.5 Negative Battery Wiring Cable Harness Loom CV2T-10C679-BD

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9362351

Head Unit Mini F55 F56 BMW F45 i3 I01 Radio DAB Media Player Unit 9362351

€94.95

Free delivery: Sep 23 – 24

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Part no. 094290

BMW E87 E90 Media Player Infotainment Multimedia System Navigation Screen 094290

€332.95

Free delivery: Sep 23 – 24

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Part no. GR3T-14B321-DF

Ford Mustang GT Mk6 Air Module Control Unit GR3T-14B321-DF

€113.95

Free delivery: Sep 23 – 24

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Part no. 4E0907440

Audi A8 D3 Vehicle Location Tracking Control Module Unit 4E0907440

€23.95

Free delivery: Sep 23 – 24

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Part no. 6899320

BMW F40 F44 Steering Column Lock Control Module 6899320

€42.95

Free delivery: Sep 23 – 24

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Part no. 5Q4959593N

Audi A1 GB VW Crafter SY Door Control Module Front Driver's Side 5Q4959593N

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2002160

Ford Focus Mk3 III Negative Minus Ground Battery Terminal Cable F1FT-14324-DAC

€23.95

Free delivery: Sep 23 – 24

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Part no. 7075944-3

BMW E60 E65 E70 Front Right Seat O/S Height Adjustment Drive 7075944

€23.95

Free delivery: Sep 23 – 24

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Part no. 04C903023M

Audi A3 8V A1 S1 8X VW Jetta A6 Golf 5G Golf R 5G Petrol Alternator 04C903023M

€70.95

Free delivery: Sep 23 – 24

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Part no. 8574372-2

BMW F30 F32 330d 430d N57N Engine Control Unit ECU Kit DDE 8574372 Automatic

€161.95

Free delivery: Sep 23 – 24

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Part no. 8V3971035A

Audi A3 S3 8V 3D Door Wiring Harness Loom Cable Driver's Side 8V3971035A

€23.95

Free delivery: Sep 23 – 24

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Part no. A2135409716

Mercedes W205 W213 OM654 Alternator Starter Wiring Harness Loom A2135409716

€113.95

Free delivery: Sep 23 – 24

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Part no. 8X0959792K

Audi Q3 8U Front Door Module Control Unit ECU Passenger Side 8X0959792H

€23.95

Free delivery: Sep 23 – 24

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Part no. 5A088E6-1

BMW F40 M135i xD B48 306HP Engine Control Unit ECU Kit DME 5A088E6 BDC Key

€731.95

Free delivery: Sep 23 – 24

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Part no. 9176823

BMW X5 E70 Footwell Light Control Module Unit LEAR PL4 FRM II 9176823

€170.95

Free delivery: Sep 23 – 24

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Part no. A2218201259-2

Mercedes W221 Bi-Xenon Headlight Front Right O/S Cable Wire Socket A2218201259

€23.95

Free delivery: Sep 23 – 24

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Part no. EH22-01444-BB

Land Rover Discovery 4 L319 Battery Pad Cover Panel EH22-01444-BB

€32.95

Free delivery: Sep 22 – 24

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Part no. 8509757-1

BMW F07 530d F01 730d N57 245HP Engine ECU Kit DDE 8509757 CAS4 Key Automatic

€237.95

Free delivery: Sep 23 – 24

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Part no. 1508937

BMW Mini Cooper S One D R50 R52 R53 Negative Battery Cable Wire 1508937

€23.95

Free delivery: Sep 23 – 24

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Part no. 9206936

BMW F12 Antenna Aerial Noise Suppression Filter Control Unit Right O/S 9206936

€23.95

Free delivery: Sep 23 – 24

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Part no. 5N0035342F-1

Volkswagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342F

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8A6T-15K603-LC

Ford Fiesta Mk8 Keyless Entry Aerial Antenna Module Sensor 8A6T-15K603-LC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. H1BB-17666-A

Ford Fiesta Mk8 Front Windscreen Washer Jet Nozzle H1BB-17666-A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CPLA-14D375-GC

Range Rover Sport L494 Interior Light Wiring Loom Ambient LED CPLA-14D375-AC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2535401401

Mercedes X253 Battery Wiring Harness Cable Tray Clamp A2535401401

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. K8D2-15K602-BD

Land Rover Range Rover Evoque L551 Antenna Amplifier Module ECU K8D2-15K602-BD

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. LR119370

Land Rover Range Rover Sport L494 Door Wiring Loom Rear Left N/S KK62-14633-BKA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6401502579

Mercedes W169 200CDI OM640.941 140HP Engine Control Unit Module ECU A6401502579

€170.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q1937084

Skoda Karoq Kodiaq Audi Q2 Q3 RSQ3 Body Control Module Unit BCM ECU 5Q1937084

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8859307

BMW X1 U11 Control Module Unit ECU 8859307

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7L0909606C

Volkswagen Touareg 7L Front Impact Crash Sensor Right Left N/O/S 7L0909606C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 0445684-3

HiFi Audio Retrofit BMW E81 E87 E90 E91 E92 Connector Cable Wire

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BK2T-14B428-EG

Ford Transit Custom Bluetooth Control Module Unit BK2T-14B428-EG

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5A06B95

Mini F65 F66 F67 BMW F70 F74 F78 Heater Climate Wiring Harness Cable 5A06B95

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5A1CE34

BMW G20 330e B48X ECU Engine Control Unit Module 292HP 2.0 B48B20A 5A1CE34

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Part no. 7P6971161FL

VW Touareg 7P Door Wiring Loom Harness Cable Front Passenger Side 7P6971161ES

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CV6T-15K868-MHC

Ford Kuga Mk2 Rear Parking Sensor PDC Wiring Harness Cable CV6T-15K863-MHC

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2035450301-1

Mercedes SLK R171 Battery Terminal Fuse Box Wiring Cable Adapter A2035450301

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1J0915333A-1

Volkswagen Golf Mk4 Battery Holder Tray Base Console Bracket Support 1J0915333A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6846141

Mini F55 F56 F57 F60 Fuse Box Grouping Fuse Placement Map Card Diagram 6846141

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03L906018ME-1

Seat Exeo 3R 2.0 TDI CJCA 143HP Engine Control Unit ECU Kit 03L906018ME Manual

€165.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. EFY500050

Land Rover Discovery L319 Ultrasonic Alarm System Module Control Unit EFY500050

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2R83-14C724-AB

Range Rover Sport L320 Rear Heated Seat Control Module 2R83-14C724-AB

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1J0971243B

Audi TT 8N Battery Negative - Earth Cable Wiring Harness Cable 1J0971243B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8639595-2

BMW F30 320i F32 420i N20 184HP Engine ECU Control Unit DME 8639595 Automatic

€446.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0131540902

Mercedes ML W164 W221 W251 OM642 CDI Altenator Generator 14V 220A A0131540902

€113.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. EH22-7H417-AA

Land Rover Discovery 4 L319 Transfer Case Control Module ECU EH22-7H417-AA

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9112463

BMW Z4 E46 E89 Mini R50 R52 Parking Control Module Unit PDC 9112463

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8578945

BMW F20 F30 116d 316d N47N 116HP ECU Engine Contol Unit DDE 8578945 Automatic

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0971104J

Audi A5 8T Rear Bumper PDC Sensor Parking Distance Control Wiring 8K0971104J

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 0AM911021E

Audi A3 8V 8Y Q2 GA S1 8X VW T-Roc Starter Motor 1.6 TDI Diesel DGTE 0AM911021E

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0051510R

Audi Q5 8R MMI Multimedia Interface Adapter Cable Loom 4F0051510R

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1498924

Ford Kuga C394 Mk1 Cigarette Lighter Socket Input Unit 7M5T-19N236-AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 83A947356

Audi Q3 F3 LED Front Door LED Lighting Module Control Unit Left N/S 83A947356

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7E0907652A

Audi TT 8J ESP YAW Rate Lateral Acceleration Speed Sensor 7E0907655A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. FK72-18K812-CH

Land Rover Discovery Sport L550 Radio Sat Nav Head Unit FK72-18K812-CH

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7P5945094K-2

Porsche Cayenne 92A Rear Boot Tailgate Light Wiring Harness Right O/S 7P5945094K

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8387541

BMW X5 E39 E53 Fuse Box Housing 8 Fold Voltage Regulator Boot 8387541

€23.95

Free delivery: Sep 23 – 24

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Part no. A2128203589

Antenna Amplifier Mercedes W212 Aerial Module Rear Roof Frame Right A2128203589

€23.95

Free delivery: Sep 23 – 24

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Part no. 9296975

BMW X5 F15 Control Unit Bracket Boot Trunk Module Unit Mount Holder 9296975

€23.95

Free delivery: Sep 23 – 24

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Part no. 7514342-1

BMW 5 Z4 Series 1 E34 E85 Base B Terminal Point Engine Compartment 7514342

€23.95

Free delivery: Sep 23 – 24

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Part no. 7PP959760F

Porsche Cayenne S 92a Front Seat Memory Control Module ECU 7PP959760F

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9344677

BMW 2 3 Series F22 F80 M3 F82 M4 Wiring Loom Harness Rear Trunk Lid 9344677

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. FV61-12A650-YB

Ford Transit Connect Mk2 Engine Control ]ECU 1.5 TDI 75HP FV61-12A650-YB Manual

€237.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055404982

Mercedes W205 Charging Plug Socket Wiring Cable A2055404982

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2198203526

Mercedes CLS W219 Door Module Rear Left N/S Control Unit A2198203526

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7641649

BMW F10 F20 F30 N20 125i 328i 528i N20 Wiring Harness Engine Module 1 7641649

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2K5972175A

Volkswagen Caddy 2K Maxi Tailgate Wiper Wiring Harness Loom Cable 2K5972175A

€23.95

Free delivery: Sep 23 – 24

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Part no. A2535400901

Starter Cable Mercedes W205 GLC X253 M274 Electrical Wiring Harness A2535400901

€47.95

Free delivery: Sep 23 – 24

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Part no. 6955116-BAQ

BMW 1 3 Series E81 E82 E87 E88 E90 E91 Ultrasonic Sensor PDC Barriquerot 6955116

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. GK2T-14A069-AD

Ford Transit Mk8 Fuel Pump Sender Wiring Loom GK2T-14A069-AD

€23.95

Free delivery: Sep 23 – 24

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Part no. AV6T-15K867-ABE

Ford C-Max Mk2 Front Bumper Wiring Loom Harness Cable Connector AV6T-15K867-ABE

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 1K0915333C

Audi A3 8P VW Golf MK5 Battery Box Tray Housing Holder Bracket Cover 1K0915333C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1664401332

Mercedes W166 Rear Bumper Parking PDC Sensor Wiring Loom Harness A1664401332

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2135403839

Mercedes W213 C238 Power Relay Fuse Box Unit Cover A2135403839

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

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