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 Q7 4L VW Touareg MK2 3.0 TDI Diesel Starter Motor 059911024E

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 80A907247

Audi SQ5 FY Line Keyless Entry Antenna Control Module 80A907247

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. HB3T-14303-DA

Ford Ranger T6 Mk1 Radio Suppresion Cable Wiring Harness HB3T-14303-DA

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9267467

BMW F13 Body Control Module Electronic Junction Box JBBFE 3 PL6 V3 9267467

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9379845

BMW X3 F25 X4 F26 Door Wiring Loom Harness Cable Passenger's Side 9379834

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8792148

Navigation Headunit BMW F20 F22 F30 Mini F55 F56 Head Unit Basic Media

€137.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0971230FA

Audi S3 8V Alternator Wiring Harness Set Three Phase 5Q0971230FA

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9346273

BMW F15 Kafas Camera Lane Assist Module Control Unit ECU 9346273

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G0035711

Audi A6 S6 C7 Hands Free Microphone Module 4G0035711

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A9075404687-1

Mercedes W907 Battery Cable Alternator Wiring Loom Harness Cabling A9075404687

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9267456

Control Unit BMW F10 F11 Body Module ECU JBBFE IIIR V2 PL6 ECU 9267456

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR080305

Land Rover Discovery 4 L319 Engine Starter Motor 3.0 Diesel CPLA-11001-BF

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 80A971235

Audi Q5 Mk2 FY Negative Battery Earth Cable Terminal Lead 80A971235

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8590019

BMW G30 G31 Engine Wiring Harness Supply Line Cable 530d B57 Diesel 8590019

€142.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GK2T14B144GA

Ford Transit Mk8 VI Fuse Box Module Positive Battery Terminal GK2T-14B144-GA

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. K1BY-12A650-BA

Ford Fiesta Mk8 ST Engine Control Unit Module ECU 1.5 EcoBoost K1BY-12A650-BA

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. EH22-14F681-AF

Land Rover Discovery 4 L319 Parking Aid Distance Control Module EH22-14F681-AF

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8R0971502A

Audi Q5 8R Battery Fuse Box Terminal Retaining Mount Bracket Holder 8R0971502A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6922211

BMW E81 E87 E90 E60 Mini R55 R56 R57 Interior Aerial Comfort Access 6922211

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. YMM501394A

Range Rover Sport L320 Rear Door Wiring Harness Cable YMM501394A

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5M51-12A650-MB

Ford Focus Mk2 Engine Control Unit 136HP ECU KIT 2.0 TDCI 5M51-12A650-MB

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9496820

Crash Sensor BMW G20 G26 G80 Front Door Left Right N/O/S Air Impact Unit 9496820

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2Q0915181

Audi Polo Mk6 Battery Negative Minus Battery Monitoring Sensor 2Q0915181

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. YWC000785

Range Rover Velar L560 Seat Memory Control Module Unit ECU YWC000785

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-14F681-AG

Land Rover Discovery Sport L550 Gateway Control Module ECU FK72-14F681-AG

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0025463141

Mercedes A209 C209 Line Connector Terminal Point Positive Lead Fuse A0025463141

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. W639 Taxi Modules

Mercedes Vito W639 Control Unit Set Taxi Rear Wheel Steering Intercom Module

€332.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02T911024N

Seat Ibiza 6J VW Volkswagen 6R Starter Motor 1.2 1.6 Petrol Engine 02T911024N

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2K0971557F

Volkswagen VW Caddy 2K Door Harness Loom Cable Wiring Front Left N/S 2K0971557F

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K3959857B

Volkswagen Polo 6R Golf Mk6 3-Door Window Lifter Switch Driver's Side 1K3959857A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CC1T-11000-AB

Ford Transit Engine Starter Motor Actuator Starter CC1T14000AB

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3B0035711B

Seat Leon Mk3 5F Hands Free Microphone Module Speaker Wiring Loom 3B0035711B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9348411

BMW X3 F25 Hifi System Audio Sound Amplifier AMP Module Unit 9348411

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1J0973332A

Audi RS4 B8 Cable Loom Wiring Plug Socket 2 Pins 1J0973332A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009006302

Mercedes W176 Automatic Gearbox Transmission Module Control Unit ECU A0009006302

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8H1971035CN

Audi A4 B7 Convertible Front Driver Side Door Wiring Harness 8H1971035CN

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6C1T-14A120-AD

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1649005001

Mercedes ML W164 Sam Control Module Fuse Box Unit A1649005001

€503.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BK3T-14B446-HC

Ford Transit Mk8 Slam Panel Sensor Cable Wire Harness Cable Front BK3T-14B446-HC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A4159066300

Mercedes W415 Starter Motor Diesel 607951 A4159066300

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8644475

BMW Mini Cooper F55 F56 F57 Integrated Supply Module Z11 8644475 12638644475

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9855653

BMW F40 F74 F78 Power Distribution Box Mount Bracket Holder 9855653

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1665400841

Ground Line Mercedes ML W166 Battery Earth Negative Cable Wire A1665400841

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2579006600

Mercedes C118 W167 W177 W205 W213 C238 Communication Module Unit A2579006600

€222.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5N0035341B

Volkswagen Golf 5 Multimedia Interface Module Box 5N0035341B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6814187-1

Audio Module BMW F20 F30 F31 F32 Operating Unit FBM Control Panel 6814187

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8P0035464

Audi A3 S3 8P Audio Amplifier Mount Bracket Holder Right O/S 8P0035464

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8806980

BMW i3 I01 LCI Door Wiring Cable Loom Harness Rear Left Right N/O/S 8806980

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129060605

Mercedes W212 Fuse Box Rear Relay Control Unit Electric Module SAM A2129060605

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1645400624

Mercedes W164 Fuse Box Relay Housing Cover A1645400624

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6928934

Antenna Amplifier BMW E82 E90 E92 Diversity Signal Boost 6928934

€23.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 1489994

Mini R50 R52 Starter Motor Engine W10 0,9KW Bosch Actuator 1489994

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9675359580

Peugeot 3008 Bluetooth Module Multimedia Control Unit ECU 9675359580

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6955475

BMW Mini Cooper R50 R52 Aerial Antenna Amplifier Diversity Module 6955475

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6992955

BMW F25 Footwell Light Control Module ECU Unit FRM3 TEMIC 6992955

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-14B526-AG

Land Rover Discovery Sport L550 Voltage Quality Module ECU BJ32-14B526-AG

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2075404207

Mercedes W204 M276 NOX Sensor Adapter Right O/S Harness Wiring Cable A2075404207

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8582280-12

BMW F20 F21 116d N47N 117HP Engine Control ECU Kit DDE 8582280 Manual

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9389069

BMW F20 F21 F30 F31 F32 X5 F15 X6 F16 Power Distribution Fuse Box Front 9389069

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2K5971691A

Volkswagen Caddy 2K Sliding Door Wiring Loom Harness Cable Left N/S 2K5971691A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5K0907115K

Volkswagen Golf 5k Engine Control ECU 2.0 Petrol 235 HP 5K0907115K Automatic KIT

€759.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3D0919473

Volkswagen Touareg 7L PDC Parking Aid System Display Panel Unit 3D0919473

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906018KP-1

Audi TT 8J CFGB 2.0 TDI Quattro 170HP Engine ECU Kit 03L906018KP Automatic

€123.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2479052503

Mercedes Sprinter W910 Remote Key Control Unit A2479052503

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9313614

BMW F30 F31 F80 M3 Driver's Side Door Wiring Loom Cable 9313614

€54.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7572873

BMW Z4 E85 E86 Battery Holder Hold Down Bracket 7572873

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2465403505

Door Wiring Mercedes W176 W246 Front Passenger Side Cable Harness A2465403505

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0971035AS

Audi RS4 B8 Door Wiring Harness Cable Loom Front Left N/S 8K0971035AS

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 99661822100

Porsche Boxter 986 Crash Impact Sensor Module 99661822100

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8519005-2

BMW X1 E84 18dX Diesel N47N 143HP Engine Unit ECU DDE 8519005 Automatic

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8H1971029AL

Audi A4 B7 Convertible Front Driver Side Door Wiring Harness Cable 8H1971029AL

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6C0907359

Audi A4 B8 Air Suspension Module Regulation Control Unit 6C0907359

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0035225N

Audi A8L 4H Antenna Aerial Amplifier 4H0035225N

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4M0941824AP

Audi Q7 4M Fuse Box Power Distribution Unit Control Module 4M0941824AP

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9318579

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9318579

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. EU5T-14A094-BA

Ford Ranger Mk3 Battery Power Fuse Box Terminal Engine Bay EU5T14A094BA

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1S0919275D-SEB

Audi Q3 8U PDC Parking Distance Control Sensor Sepang Blue Pearl Y5Q 1S0919275D

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5A4A7B1

BMW G20 G21 LCI Rear Door Wiring Loom Harness Cable Left Right N/O/S 5A4A7B1

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6860936

BMW i3 I01 F45 F46 Control Unit SAS Module ECU 6860936

€142.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8373700-1

BMW E60 E63 E87 E90 E91 2X Relay Make Contact White Green Set 8373700

€24.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9866980

BMW F20 Body Control Unit Module REM Fuse Box 9866980

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 80A035225Q

Audi Q5 Mk2 FY Aerial Antenna Amplifier Module Unit 80A035225Q

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6994419

BMW G20 Power Distribution Fusebox Cover Fuse Box Terminal 6994419

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129060205

SAM Module Mercedes W207 A207 C207 Rear Control Unit ECU A2129060205

€99.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7164820-2

BMW E88 E93 Convertible Rollover Bar Protection System Sensor Unit Module 800137

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. R8D2-14633-EAA

Range Rover Evoque L551 Door Wiring Harness Loom Rear Left N/S R8D2-14633-EAA

€108.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 284B13867R

Mercedes Citan W415 Renault Kangoo BCM Body Control Module Unit ECU 284B13867R

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6H52-18C808-AG

Land Rover Freelander 2 L359 Premium Audio Amplifier Module 6H52-18C808-AG

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6G9T-14A631-DD

Ford Mondeo Mk4 Rear Door Wiring Loom Harness Cable Right O/S 6G9T-14A631-DD

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2649000700-5

Mercedes W205 C 200 264915 197HP Engine Control ECU Module A2649000700 Automatic

€246.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5R3919294

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

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03C906027BA

VW Golf Scirocco Engine Jetta Control Unit Module ECU 1.4 TSI 160HP 03C906027BA

€137.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0035198C-1

Volkswagen Eos 1F Radio CD Navigation Control Unit Module 1K0035198C

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7839662

BMW E90 E92 E93 LCI Cable Alternator Starter Base B 7839662

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8P0959433F

Audi A3 8P CCM Covenience Control Module Unit Relay Board ECU HELLA 8P0959433F

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8799259

Mini F56 Active Sound Design Radio Audio Amplifer Control Unit Module 8799259

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906022RD

Skoda Octavia II VRS 2.0 TDI CEGA Engine Control Module ECU 03L906022RD Manual

€256.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9253780

Boot Release Switch BMW F01 F02 F10 F11 LCI Auto Tailgate 9253780

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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