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 R50 R52 R53 Headlight Headlamp Plug Wiring Harness Cable Left N/S 7198731

€23.95

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Seat Belt Module BMW E92 F32 E61 Control Unit LCPA ECU 9273584

€23.95

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BMW F10 F20 F30 F31 Mini F55 F56 Front Heated Seat Control Module ECU 7490465

€23.95

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Audi A4 B9 Gateway Control Module Unit ECU 4M1907468D

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Ford B-Max CD Player Stereo Audio Radio Head Unit BM5T-18C815-HJ

€61.95

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Mercedes W204 SAM Module Control Unit Rear A2049060305

€80.95

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Air Module Unit BMW F10 F11 F30 F31 F25 F12 F13 X3 F25 ECU Control 9319493

€23.95

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Mercedes W204 M271 Solenoid SOLV Valve Wiring Harness Petrol A2711500420

€23.95

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Part no. 9293305

BMW F20 F21 F30 F31 Rear Electronic Module Fuse Box Control Unit V1 REM 9293305

€23.95

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Part no. 6949226

BMW E63 E64 Convertible Coupe DWA Alarm System Module Control Unit 6949226

€23.95

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Part no. A9079051202

Mercedes Sprinter W907 Battery Wire Negative Lead Cable A9079051202

€23.95

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Part no. 8K0915181C

Audi A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181C

€23.95

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Part no. 8P0919475

Audi A3 8P PDC Parking Distance Control Module ECU Unit 8P0919475

€28.95

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Part no. 8624382

BMW 1 3 Series F20 F30 F31 LCI Line Cable Power Distribution Module 8624382

€23.95

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Part no. LR052994

Land Rover Discovery 4 L319 Rear Parking Sensor Wiring Loom Harness EH2215B484CB

€56.95

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Part no. 9234087

BMW E70 F01 F02 F10 F11 Rain / Light / Solar Fogging Sensor Control Unit 9234087

€23.95

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Part no. A1644407110

Mercedes W164 Wiring Loom Cable Harness Door Rear Left Right A1644407110

€23.95

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Part no. 6945146

BMW 5 6 Series E60 E61 E63 Driver Side Door Airbag Control Unit Module 6945146

€23.95

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Part no. 6915327-1

BMW E46 E60 E81 E87 E90 E91 F10 F20 F30 2x Relay Make Contact Sky Blue 6915327

€23.95

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Part no. 9329703

BMW F20 F21 F30 F31 F32 Rear Body Control Unit Module REM 9329703

€23.95

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Part no. A0001502780-1

Mercedes W203 CL203 W204 M272 Petrol Ignition Coil Cable Connector A0001502780

€66.95

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Part no. A0009003206

Mercedes W205 W222 Fuel Pump Module Control Unit A0009003206

€23.95

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Part no. 8K0971035AR

Audi A4 B8 Front Driver's Door Wiring Harness Loom Electrical Cable 8K0971035AR

€23.95

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Part no. 06E971627N

Audi A4 B8 A6 C7 A7 C7 4G Fuel Injector Wiring Cable 3.0 TFSI 06E971627N

€23.95

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Part no. F30-SCREEN-2

BMW F30 F31 Dashboard Dash Central Information Screen Display Android 10.25"

€237.95

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Part no. 4F0907801B

Audi A6 C6 Electric Parking Hand Brake Module Control Unit ECU 4F0907801B

€37.95

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Part no. NAD500330

Land Rover Discovery 3 Sterter Motor 12V 2.7 V6 LION 276DT Diesel 5H22-11002-AB

€32.95

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Part no. 8W0959593E

Audi A4 B9 Front Door Control Module Unit Driver's Side 8W0959593E

€28.95

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Part no. A2059006822

Module Mercedes W205 Relay Body Control Module Unit SAM BCM A2059006822

€23.95

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BMW F10 F20 F23 F30 Telematics Module Bluetooth Communications Control 6809316

€85.95

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Part no. 5J0035161D

Skoda Fabia 5J CD Player Audio Stereo Radio Head Unit 5J0035161D

€23.95

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Part no. A2075403434

PDC Wiring Mercedes W204 W207 Parktronic Parking Sensor Cable Rear A2075403434

€23.95

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Part no. 8E0857925G

Audi A3 8P TT 8J A4 B7 Ipod Interface Multimedia Storage Compartment 8E0857925G

€23.95

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Part no. A1648202715

Electrical Wiring Cable Mercedes W164 W251 Radio Media Interface A1648202715

€23.95

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Part no. 6865245

BMW X5 F15 X6 F16 Power Steering Column Control Unit Module 6865245

€23.95

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Part no. 1K0959654

Audi A3 8P Steering Wheel Position Angle Sensor Control Unit Module 1K0959654

€23.95

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Part no. 7464634

BMW X1 F48 Control Unit Remote Backrest Unlocking 7464634

€23.95

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Part no. 5Q0959392B

Audi A3 S3 8V Door Control Module Front Passenger Side Left N/S 5Q0959392B

€23.95

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Porsche Cayenne 9PA 955 Front Bumper PDC Park Sensor Wiring Harness 7L5971095C

€37.95

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BMW E46 X5 E53 E60 E65 X3 E83 Z4 E85 Z3 Cable Alternator Starter 1439743

€23.95

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Part no. 5N0035342G

VW Volskwagen Polo 6R Multimedia Electronic ECU Control Unit Module 5N0035342G

€23.95

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Part no. 6R0971537F

VW Volkswagen Polo 6R Negative Battery Terminal Cable Wiring 6R0971537F

€23.95

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Part no. 7S7T-14B056-AD

Ford Mondeo Mk4 Air Module Control Unit ECU 7S7T-14B056-AD

€23.95

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Part no. AH42-15K602-BC

Range Rover L405 Radio Antenna Reciver Module Unit AH42-15K602-BC

€23.95

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Part no. 9325917

Door Cable BMW F36 Rear Left Right N/O/S Wiring Harness 9325917

€23.95

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Part no. 6R0971235C

VW Volkswagen Polo 6R Negative Battery Terminal Cable Wiring 6C0971235A

€23.95

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Part no. 8T0907468M

Audi A5 8T Central Gateway Module ECU Control Unit Lear 8T0907468D

€23.95

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Part no. 6882963

Air Module BMW F01 F02 LCI F07 GT F10 F11 F13 ECU ICM Control Unit 6882963

€32.95

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Part no. K8D2-19H440-BB

Land Range Rover Sport L494 Keyless Entry Control Module ECU K8D2-19H440-BB

€94.95

Free delivery: Nov 12 – 13

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Part no. 6925964

BMW X3 E83 Drive For Window Lifter Motor Front Right O/S 6925964

€23.95

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Part no. 9231466

BMW 2 3 4 Series F22 F30 F32 Antenna Amplifier Module Trap Circuit 9231466

€23.95

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Part no. 6962888

Air Module Sensor BMW Z4 E64 E85 B Pillar Right O/S 6962888

€47.95

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Part no. RVH000055

Land Rover Range Rover Sport L320 Air Suspension Valve Block Module RVH000055

€23.95

Free delivery: Nov 12 – 13

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Part no. 9350313

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

€32.95

Free delivery: Nov 12 – 13

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Part no. 8K0919475

Audi A5 8T Parktronic Parking Sensor Module Unit ECU 8K0919475

€23.95

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Part no. 6915047

BMW E46 E39 E38 E83 E53 E85 E86 Control Unit Voice Input System Module 6915047

€23.95

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Part no. 6930302

BMW E60 E61 E63 E64 Actuator Ventilation Motor Heater Right O/S 6930302

€23.95

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CD Changer BMW X5 E70 X6 E71 Mini R55 R56 R57 6 Disc Changer Unit 9177118

€37.95

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Part no. 9352750

BMW X6 F16 F86 Camera Kafas Front Windscreen Camera Module 9352750

€47.95

Free delivery: Nov 12 – 13

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Part no. DPLA-14C725-DA

Land Rover Range Rover L405 Discovery Sport Seat Memory Control DPLA-14C725-DA

€23.95

Free delivery: Nov 12 – 13

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Part no. 4H0959792G

Audi A8L 4H Front Door Control Module Left N/S Unit ECU 4H0959792G

€23.95

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Part no. 6792659

BMW X5 E70 X6 E71 Control Unit Dynamic Drive Front Axle Suspension 6792659

€28.95

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Part no. 6C1T-14A120-AD

Ford Transit Mk7 Starter Motor Wiring Cable 2.2 TDCi 6C1T-14A120-AD

€23.95

Free delivery: Nov 12 – 13

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Part no. 8582279-3

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP ECU Kit DDE 8582279 Keys FEM

€222.95

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Part no. A2118209126

Mercedes-Benz C E Class W203 W211 Alarm Anti Theft System Control Module Unit

€23.95

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Part no. A2045400440

Battery Bracket Mercedes W204 W207 Battery Mount Support Holder A2045400440

€23.95

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Mini Cooper R55 R56 Control Unit Module Passive Go 3448466

€28.95

Free delivery: Nov 12 – 13

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Part no. 8678974

Engine Cable BMW F40 X1 F48 Mini F55 F56 Injector Wiring Loom Harness 8678974

€32.95

Free delivery: Nov 12 – 13

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Part no. A2709060700

Mercedes W176 Starter Motor 12V Bosch M270 Petrol Engine A2709060700

€23.95

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Part no. 9240945

Mini Cooper D R55 R56 R57 R60 LCI Electrical System Fuse Distribution Box

€23.95

Free delivery: Nov 12 – 13

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Part no. LT1T-15604-DCB

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€85.95

Free delivery: Nov 12 – 13

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Part no. 9172019

BMW 5 Series E60 E60N E61 E61N LCI Airbag ECU Control Unit Module 9172019

€23.95

Free delivery: Nov 12 – 13

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Part no. 9266384

BMW 5 Series F10 F11 LCI Boardmonitor Central Information Display 7" 9266384

€56.95

Free delivery: Nov 12 – 13

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Part no. A1715451332

Mercedes SLK R171 Parking Distance Aid Sensor Control Unit Module A1715451332

€23.95

Free delivery: Nov 12 – 13

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Part no. 5Q0937084AC

Skoda Octavia 5E Audi A3 8V Body Control Comfort Module BCM ECU Unit 5Q0937084AC

€23.95

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Part no. 8S0915181A

Audi TT FV HV Battery Negative Terminal Cable Harness Loom Wiring 8S0915181A

€23.95

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Part no. 6901469-3

Relay BMW E60 E87 E90 F10 F30 4 Pin Tyco Set Black 6901469

€23.95

Free delivery: Nov 12 – 13

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Part no. 5R3919294

Volkswagen Golf CD1 Park Parking Assist PDC Distance Control Module 5R3919294

€37.95

Free delivery: Nov 12 – 13

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Part no. A1679000111

Mercedes W167 W177 Radio Stereo Player Sat Nav Head Unit ECE A1679000111

€284.95

Free delivery: Nov 12 – 13

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Part no. 8P4945096C-2

Audi A3 8P Rear Tail Brake Light Lamp Wiring Cable Right O/S Side 8P4945096C

€23.95

Free delivery: Nov 12 – 13

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Part no. A9075401205

Mercedes W907 Starter Wiring Battery Alternator Cable Harness Loom A9075401205

€32.95

Free delivery: Nov 12 – 13

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Part no. 5Q0907530N

Skoda Octavia 5E Gateway Control Module Unit ECU 5Q0907530N

€23.95

Free delivery: Nov 12 – 13

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Part no. 059911024P

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

€42.95

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Part no. A0015424623-1

Mercedes-Benz C E A207 W204 W212 1 Front Parking PDC Display Panel A0015424623

€23.95

Free delivery: Nov 12 – 13

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Seat Module Mercedes W204 W212 Memory Control Unit Driver's Side A2129005200

€56.95

Free delivery: Nov 12 – 13

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Audi A8L 4H Power Positive Distribution Junction Jumper Box Housing 4H0911075B

€23.95

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Mercedes W205 Tyre Pressure Control Module Unit A0009003713

€23.95

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Part no. 8574352

BMW X1 E84 20d 20dX 184HP N47N Engine Control Unit ECU DDE 8574352 Automatic

€89.95

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Mercedes-Benz A B Class W176 W246 Diesel Fuse Box Relay Unit A2465402150

€28.95

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Part no. A1668210351

Mercedes-Benz A CLA C117 W176 Airbag Impact Crash Sensor A1668210351

€23.95

Free delivery: Nov 12 – 13

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Audi A4 B8 Suond Amplifier System Speaker Module Unit 8T0035223J

€23.95

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Part no. 9237055

Antenna Diversity BMW F07 GT Control Unit Module Aeral Amplifier 868 MHZ 9237055

€23.95

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BMW E93 LCI Convertible GPS Antenna Aerial Unit Module 9154413

€23.95

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Part no. 8T0959793G

Audi A4 B8 Door Module Front Left N/S Control Unit ECU 8T0959793G

€23.95

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€23.95

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Part no. 9352574

Mini Cooper F56 Wiring Loom Front Left N/S Door Cables 6809486

€23.95

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Part no. 2T1T-14A280-CG

Ford Transit Connect 1.8 TDCi Battery Positive Cable Clamp Wiring 2T1T14A280CG

€23.95

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€23.95

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Alternator Motor BMW F20 F21 LCI B37 Diesel Engine Alternator 180A 8626086

€85.95

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