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

€113.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 2002160

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

€28.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 7075944-3

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

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 04C903023M

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

€70.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8574372-2

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

€161.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8V3971035A

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

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. A2135409716

Mercedes W205 W213 OM654 Alternator Starter Wiring Harness Loom A2135409716

€113.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8X0959792K

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

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 5A088E6-1

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

€731.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 9176823

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

€170.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. A2218201259-2

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

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. EH22-01444-BB

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

€32.95

Free delivery: Aug 10 – 12

If paid before 14:00

Part no. 8509757-1

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

€237.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 1508937

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

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 9206936

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

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 5N0035342F-1

Volkswagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342F

€23.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

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: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. A2535401401

Mercedes X253 Battery Wiring Harness Cable Tray Clamp A2535401401

€32.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. A6401502579

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

€170.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 42015358-1

Citroën Relay Mk3 2.2 Diesel DW12RUD 140HP Engine Unit ECU Kit 42015358 Manual

€455.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. 8859307

BMW X1 U11 Control Module Unit ECU 8859307

€56.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. BK2T-14B428-EG

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

€51.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. 7P6971161FL

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

€42.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. EFY500050

Land Rover Discovery L319 Ultrasonic Alarm System Module Control Unit EFY500050

€23.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. 1J0971243B

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

€23.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. A0131540902

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

€113.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

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: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. 8K0971104J

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

€23.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. 4F0051510R

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

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 1498924

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

€23.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. 7E0907652A

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

€23.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

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: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. A2128203589

Antenna Amplifier Mercedes W212 Aerial Module Rear Roof Frame Right A2128203589

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 9296975

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

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 7514342-1

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

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 7PP959760F

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

€66.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. A2198203526

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

€23.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. 2K5972175A

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

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. A2535400901

Starter Cable Mercedes W205 GLC X253 M274 Electrical Wiring Harness A2535400901

€47.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 6955116-BAQ

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

€23.95

Free delivery: Aug 11 – 12

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: Aug 11 – 12

If paid before 14:00

Part no. A2135403839

Mercedes W213 C238 Power Relay Fuse Box Unit Cover A2135403839

€56.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. CPLA-18A828-AC

Range Rover L405 Touch Screen Display Control Panel CPLA-18A828-AC

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. HJ32-14K016-BA

Land Rover Discovery Sport L550 Storage Fuse Box Schema Cover Cap HJ32-14K016-BA

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 9251979

BMW X3 F25 Footwell Light Module Control Unit FRMIII 9251979

€61.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8W6947355D

Audi A5 S5 F5 Door Card Panel LED Module Light Unit Front Right O/S 8W6947355D

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 4K0971537

Audi A6 C8 A7 4K Electric Drive Earth Line Negative Cable 4K0971537

€47.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 5WD919294

Volkswagen Golf GTI CD1 PDC Parking Distance Control Module 5WD919294

€56.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 5K0959434E

Audi A1 8X Volkswagen Tiguan 5N Keyless Entry Control Module Unit 5K0959434E

€32.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. AH22-14K011-AC

Land Rover Discovery 4 L319 Radiator Wiring Loom Harness AH22-14K011-AC

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 9210923

BMW F10 Front Seat Wiring Loom Electrical Cable Harness 9210923 9210922

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. A0015424723-1

Mercedes W204 W207 W221 Parking Sensor Display Control PDC A0015424723

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8W8971693B

Audi A5 S5 F5 Door Wiring Harness Rear Left Right N/O/S 8W8971693B 8W8971693C

€56.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 6G9T-14C507-AB

Ford Galaxy Mk2 Fuse Box Lid Cover Panel Housing 6G9T-14C507-AB

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8515491

BMW X3 F25 Battery Cable 30dX 35dX Wiring Alternator Starter Cable B+ 8515491

€37.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8377658

BMW X5 SERIES E53 TV amplifier 8377658

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. A1645400762

Mercedes W164 W211 C219 Tyre Pressure Monitor Control Unit Module A1645400762

€28.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 7515206

Mini Cooper One R50 R52 Battery Alternator Starter Cable Wiring 7515206

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 4H0919275-SHB

VW Golf Mk6 Audi TT 8J Parking Distance Control Sensor Shark Blue Metallic - A5Q

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 6935667-1

BMW Z4 Series E85 Roadster Battery Lead Positive Cable Plus Pole 6935667

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. L1TT14B006AA

Ford Transit Mk8 Fiesta Mk8 Crash Impact Sensor Air Module L1TT-14B006-AA

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. A2055404797

Battery Cable Mercedes GLC X253 Starter Motor Alternator Wiring A2055404797

€47.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 7E0937503B

VW Volkswagen Transporter T5 Engine Bay Fuse Box Relay Plate 2.5 TDI 7E0937503B

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 9308369

BMW Z4 E89 Light Footwell Control Module Unit 9308369

€42.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 6928369

BMW E60 Dashboard Solar Receiver Sensor Plug Socket Wiring 6928369

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8635808-1

Engine Wiring BMW F20 F30 F31 LCI B38 Loom Module 2 Harness Cable 8635808

€75.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8486547-2

Mini Cooper F55 F56 Dual-Clutch Transmission Gearbox Control Unit Module DCT

€379.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8517874-6

BMW F20 F21 116d N47N 116HP ECU Kit DDE 8517874 + Key + FEM + Lock Manual

€218.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 9252813

BMW 5 7 Series F01 F02 F10 F11 Power Distribution Fuse Box Rear 9252813

€28.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 7P5907401L-1

Porsche Cayenne 92A 3.0 TDI CVVA 262HP Engine ECU Kit 7P5907401L Automatic

€617.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8654635

Mini Cooper S F55 F56 Petrol Positive Battery Alternator Starter Cable 8654635

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 6942430

BMW Z4 E85 E86 Tilt Sirene Speaker Alarm With Inclination Indicator 6942430

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 5A21BF0

BMW F20 F21 F30 LCI F36 B48 184HP Engine Control ECU DME 5A21BF0 Automatic

€222.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. A2466200028

Mercedes W176 Battery Support Holder Bracket Mount A2466200028

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. A2135400414

Mercedes W213 C238 Fuse Box Relay Control Unit Module A2135400414

€56.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 5E3971694AC

Skoda Octavia VRS Door Wiring Wire Harness Cable Loom Rear Right O/S 5E3971694AC

€42.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 8600358

BMW F20 F30 LCI MINI F55 F56 Integrated Relay Supply Module 8600358

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 9291954

BMW F20 F21 Front Door Wiring Harness Cable Right O/S 9291954

€28.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 6915063

Ultra Sonic Module Mini R50 R53 Alarm System Sensor 6915063

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

Part no. 6G9T-14C507-BB

Ford Galaxy Mk2 Fuse Box Lid Cover Panel Housing 6G9T-14C507-BB

€23.95

Free delivery: Aug 11 – 12

If paid before 14:00

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