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 Transit Connect ECU Control Unit Impact Sensor Module Airbag 9T1T-14B321-BE

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Free delivery: Nov 12 – 13

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Audi A3 8P Door Card Speaker Rear Left Right N/O/S Audio Speaker 8H0035411

€23.95

Free delivery: Nov 12 – 13

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Mercedes W204 Dashboard Stereo Display Screen Sat Nav Multimedia A2049005205

€28.95

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BMW 1 Series F20 F21 LCI 116d 116ed B37 Diesel Engine Starter Motor 8572918

€42.95

Free delivery: Nov 12 – 13

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Mercedes W447 Fuel Pump Control Module A0009009213

€85.95

Free delivery: Nov 12 – 13

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Part no. BK2T-14A075-AB

Ford Transit Custom Engine Bay Fuse Relay Box Cover Top Lid BK2T-14A075-AB

€28.95

Free delivery: Nov 12 – 13

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Mercedes W213 Power Relay 4 Pin 12V Hella A0009828223 SET x2

€23.95

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Part no. A2649060400

Mercedes W205 W257 Starter Engine Motor A2649060400

€113.95

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Part no. 6826326

BMW F40 G05 G20 G30 Shark Roof Fin Antenna Aerial Module Unit 6826326

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q4959592K

Seat Ateca Door Module Control Unit Front Passenger's Side Door 5Q4959592K

€23.95

Free delivery: Nov 12 – 13

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Part no. 8617239

Gearbox Module Mini R55 R56 LCI R60 Automatic Transmission Unit EGS 8617239

€51.95

Free delivery: Nov 12 – 13

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Part no. 7561834-22

BMW E87 E90 120i 320i N46 150HP Engine Control DME Module 7561834 Automatic

€284.95

Free delivery: Nov 12 – 13

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Part no. A2044405935

Mercedes W204 Door Card Harness Loom Cable Wiring Front Left N/S A2044405935

€23.95

Free delivery: Nov 12 – 13

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Part no. 9229873

BMW 1 Series E81 Body Control Module ECU L2 PL2RR JBBFE III Junction Box 9229873

€23.95

Free delivery: Nov 12 – 13

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Part no. 8802918

BMW F20 F30 Mini F55 F56 Radio Remote Control Receiver 434 MHZ 8802918

€23.95

Free delivery: Nov 12 – 13

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Part no. 80B907468G

Audi A4 B9 A5 F5 Gateway Diagnostic Interface Control Module Unit ECU 80B907468G

€208.95

Free delivery: Nov 12 – 13

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Part no. 9142092

Bluetooth Antenna BMW X1 X3 Z4 E84 E89 F01 F02 F03 F25 Amplifier AMP 9142092

€23.95

Free delivery: Nov 12 – 13

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Part no. 8R0035223F

Audi A4 B8 A5 8T Stereo Radio Sound System Speaker Amp Amplifier 8R0035223F

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BM5T-18C815-HL

Ford B-Max Mk1 CD Player Stereo Audio Radio Head Unit BM5T-18C815-HL

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7510921

Mini R52 Cabrio Petrol W10 Engine Wiring Loom Harness Module 7510921

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669003501

Mercedes W166 Switch Rotary Selector Controller Navigation Radio A1669003501

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7160897

BMW X5 E53 E60 E61 E65 E81 E87 E90 E91 Turn Indicator Silver Bulb 7160897

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009068705

Mercedes S205 Negative Battery Cable Terminal Clamp Wire A0009068705

€23.95

Free delivery: Nov 12 – 13

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Part no. A2129004206

Door Module Mercedes W212 E-Class Rear Right O/S Control Unit A2129004206

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7631932

Engine Wiring BMW F30 F31 N20 Loom Module Harness Cable 7631932

€75.95

Free delivery: Nov 12 – 13

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Part no. 9255048

BMW 1 Series E81 E87 E87N Battery Wire Cable Negative Earth Lead 9255048 6929705

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0907063CC

Audi A4 B9 BCM Body Control Module Comfort Unit ECU 8W0907063CC

€28.95

Free delivery: Nov 12 – 13

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Part no. DH52-18C815-BD

Land Rover Discovery 4 L319 Radio Head Unit DAB CD Player CH22-044H94-BAW

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779001203

Mercedes W177 Door Control Module Rear Left Right N/O/S A1779001203

€23.95

Free delivery: Nov 12 – 13

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Part no. 9126106

BMW Mini R55 R56 R57 Cabrio Adapter Lead Outside Temperature Sensor 9126106

€23.95

Free delivery: Nov 12 – 13

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Part no. A2118705026

Passenger Seat Module Mercedes W164 W203 W211 Memory Control Unit A2118705026

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6989994

BMW E65 E66 E67 Control Unit Front Centre Console Module 6989994

€23.95

Free delivery: Nov 12 – 13

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Part no. GK2T-6M091-AB

Ford Transit Mk8 2.0 Ecoblue Diesel Glow Plug Wiring Loom GK2T-6M091-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8514766

BMW 1 Series F20 114d 116d ed N47N Wiring Harness Engine Glow Module 8514766

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7545142

BMW Z4 Series E85 N52 Roadster Cable Alternator Starter Base B+ 7545142

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AA971693CB

VW Volkswagen Passat B7 Rear Door Wiring Loom Harness Left N/S 3AA971693CB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049060205

Mercedes W204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7CP1-18C847-CA

Ford Focus Mk3 Aerial Antenna Amplifier Control Unit Module 7CP1-18C847-CA

€23.95

Free delivery: Nov 12 – 13

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Part no. A2048700296

Mercedes S204 W204 Stereo Radio CD Satelite Navigation Head Unit A2048700296

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9199305

KaFAS Camera BMW F10 F11 Rear View Control Unit Module 9199305

€89.95

Free delivery: Nov 12 – 13

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Part no. 7549284

BMW 1 3 Series E87 E90 118i 318i N46 Wiring Loom Cable Harness Engine Gearbox

€23.95

Free delivery: Nov 12 – 13

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Part no. 9861558-1

Rain Sensor BMW F20 F21 F30 F31 Windscreen Light Solar Condensation Unit 9861558

€37.95

Free delivery: Nov 12 – 13

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Part no. A2469003417

Parking Brake Module Mercedes W176 W231 W246 Electric Control Unit A2469003417

€23.95

Free delivery: Nov 12 – 13

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Part no. DS7T-15K603-AA

Ford Focus Mk3 Keyless Entry Control Module Antenna Unit DS7T-15K603-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. 8658275

Mini Cooper One F54 F55 F56 F57 F60 Starter Motor Engine Petrol 8658275

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 90847906

BMW F10 F20 F30 Reversing Camera ECU Control Unit Module 90847906

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9261580-GSB

BMW F20 F21 F30 F31 PDC Parking Sensor Ultrasonic SET x2 Glacier Silber - A83

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049001206

Mercedes W204 Coupe Door Module Front Left N/S Control Unit A2049001206

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2079052800

Mercedes-Benz E-Class W207 Cabrio A207 Anti Theft Alarm Module Control Unit ECU

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-14F392-JE

Range Rover L405 Air Suspension Control Module Unit ECU CPLA-14F392-JE

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9125224

BMW 1 3 SERIES E87 E90 E91 Control Unit Airbag ECU NO CRASH DATA 9125224

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7521122

BMW E60 E65 E70 E87 E90 F10 F20 F30 N52 N53 Petrol Engine Starter Motor 7521122

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937125A

Fuse Relay Box Volkswagen Audi Skoda Seat Engine Bay Supply Unit 5Q0937125A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C8937049D

VW Volkswagen Touran Body Control Comfort Unit Module BCM 3C8937049D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8570673-1

Alternator Generator BMW F07 F10 N57N N57Z Diesel Engine 230A Valeo 8570672

€75.95

Free delivery: Nov 12 – 13

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Part no. 6958526

BMW 5 X5 X6 Series E60 E61 E70 E71 F07 F10 F11 Seat Adjustment Switch Right O/S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8506375

BMW 1 3 Series E81 E87 E90 E91 LCI N47 Diesel ECU DDE engine control 8506375

€32.95

Free delivery: Nov 12 – 13

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Part no. A2469000012-1

Mercedes W176 W246 Radio Head Unit COMAND Navi Player Control Unit A2469000012

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4159066000

Starter Motor Mercedes W415 Citan OM607 OM608 Diesel Engine Starter 233006508R

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8510137-3

BMW F10 F11 520d N47N 184HP Engine Control Module ECU DDE 8513242 Manual

€113.95

Free delivery: Nov 12 – 13

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Part no. 9111165-PB2

PDC Sensor BMW E81 E82 E87 E88 E90 E91 Ultrasonic Parking SET X4 Platinbronze

€51.95

Free delivery: Nov 12 – 13

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Part no. CK52-14C676-AA

Range Rover L405 Sensor Air Module Impact Crash Sensor CK52-14C676-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8473167

BMW F30 F31 F32 LCI 330dX N57N Engine Gearbox Module Wiring Cable Loom 8578498

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0959792H

Door Module Audi A5 8T A4 B8 Control Front Left N/S Unit 8T0959792H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0907468

Audi A6 C6 Q7 4L Gateway Module Control Unit 4L0907468 4L0910468

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075401102

Mercedes W207 A207 C207 Loudspeaker Cable Wiring Loom Harness

€23.95

Free delivery: Nov 12 – 13

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Part no. 3G0919605D

VW Volkswagen Golf Mk7 Multimedia MMI Sat Nav Radio Display Screen 3G0919605D

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8510221-2

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8510221 CAS3 + Key

€199.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9255135

BMW E81 E87 E90 E91 PDC Parking Sensor Front Rear Mineralgrau Mineral Gray B39

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1679050700

Mercedes W177 Crash Impact Sensor Front Door Left Right Unit A1679050700

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G92-15K866-CC

Ford Transit Mk7 PDC Parking Sensor Aid Control Unit Module 6G92-15K866-CC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JK2T-14B321-AJ

Ford Transit Custom Airbag Control Module Crash Data Reset JK2T-14B321-AJ

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8678962

Mini Cooper S F55 F56 F57 Petrol Injector Wiring Cable Loom Harness 8678962

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9269956

BMW X1 Series E84 Cable Loom Door Passenger Side Wiring Harness 9269948

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7075907

BMW Z4 E85 Left N/S Contact Bush 7075907

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2124404851

Mercedes W212 Rear Bumper PDC Wiring Parking Sensor Loom Harness A2124404851

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971250AH

VW Golf Mk5 V Negative Battery Terminal Cable Wiring 1K0971250AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CA6T-15K600-EA

Ford Fiesta Mk7 Body Control Module BCM Controller Unit ECU CA6T-15K600-EA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9287530

BMW 1 Series F20 Control Unit Air Conditioning A/C Module 9287530

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009002720

Mercedes Sprinter W907 Parking Control Unit Module Sensor Parktronic A0009002720

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8741637

BMW X1 F40 F48 Mini F55 F56 F57 F60 Earth Cable Battery Cable 8741637

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009003013

Mercedes W213 C238 Air Conditioning Climate Control Module A0009003013

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1725400950

Mercedes SLK R172 Relay Fuse Box Control Unit A1725400950

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8581872

Engine Wiring BMW F10 F11 N57Z Diesel Gearbox Loom Module Harness 8581872

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2439000800

Drivetrain Module Mercedes H243 Transmission Control Unit ECU A2439000800

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959793

Audi A5 8T Door Module Control Unit ECU Front Driver's Side 8K0959793

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9264973-1

BMW X5 E70 Seat Control Unit Module ECU 9264973

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0959792T

Audi A6 C6 Front Left N/S Door Lock Control Module Unit ECU 4F0959792T

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Energy Distributor Mercedes W205 W238 Power Control Unit Module A0009822112

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9176884

BMW E93 ECU Body Control Module H3 Junction Box 61359176884 9176884

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8200587119

Renault Trafic III Vauxhall Vivaro B Relay 5-Pin Grey Unit 8200587119

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR007753

Land Rover Freelander L359 Alternator Support Bracket Mount 2.2 CRDI 9661310080

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8635808

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

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0907468C

Audi A5 8T 2.0 TDI Gateway Control Module Unit ECU 8R0907468C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8510221-18

BMW E90 E91 E92 LCI 325d N57 204HP ECU Engine Module DDE 8510221 Automatic

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6839821

Battery Cable BMW G01 G02 F97 F98 Positive Plus Pole Lead L= 712MM 6839821

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9640469680-1

Peugeot Partner Glow Plug Relay Control Unit Module 9640469680

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469002616

Mercedes W176 W246 PDC Parking Distance Sensor Control Unit Module A2469002616

€56.95

Free delivery: Nov 12 – 13

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Part no. 7M0951253C-3

VW Volkswagen Audi Seat Skoda Relay Black Control 5 Pin 12V 7M0951253C Set X2

€23.95

Free delivery: Nov 12 – 13

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