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 Cooper One R50 R53 Loudspeaker Rear 65136956166 6956166

€23.95

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Part no. 9365780

BMW X5 F15 Wiring Front Right O/S Door Harness Loom 9365780

€42.95

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Part no. 443937105A

VW Volkswagen Audi Skoda Seat Little Fuse Amp 30A 12V 443937105A

€23.95

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Part no. A1776203400

Mercedes W177 W247 Battery Bracket Mount Holder Support A1776265300

€23.95

Free delivery: Nov 12 – 13

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Part no. 7PP959663E-1

Porsche Cayenne 92A VW Touareg 7P Voltage Stabilizer Control Module 7PP959663E

€23.95

Free delivery: Nov 12 – 13

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Part no. 4L0959794B

Audi Q7 4L Door Control Module Electrical Unit ECU Rear Right O/S 4L0959794B

€23.95

Free delivery: Nov 12 – 13

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Part no. A1669007609

Mercedes ML W166 Door Control Module Unit ECU Front Right O/S A1669007609

€61.95

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Part no. 9367679

Screen Ring Mini F56 F60 Navigation Display Head Unit Trim Cover 9354397

€56.95

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Part no. 4F0959792E

Audi A6 C6 Front Passenger Side Door Left N/S Module Unit Control ECU 4F0959792E

€23.95

Free delivery: Nov 12 – 13

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Part no. AM5T-18C815-PG

Ford Fiesta Mk7 Radio CD Player Head Unit Multimedia Module AM5T-18C815-PG

€75.95

Free delivery: Nov 10 – 13

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Part no. 237104376R

Mercedes Citan W415 109 CDI OM607.951 Engine Control Unit ECU 237104376R Manual

€32.95

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Part no. 5G0971104L

VW Volkswagen Golf Mk7 Wiring Loom PDC Rear Harness Parking Sensor 5G0971104L

€28.95

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Part no. A2059001240

Mercedes GLC 220d X253 Air Conditioning Climat A/C Control Module A2059001240

€32.95

Free delivery: Nov 12 – 13

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Part no. A1698208526

Mercedes-Benz A B Class W169 W245 Door Control Module Left Rear N/S A1698208526

€23.95

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Part no. 9170732

BMW X5 E70 CCC Navigation System CD Player Sat Nav Head Unit 9170732

€360.95

Free delivery: Nov 12 – 13

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Part no. A4519003401

Smart Fortwo C451 Cabrio Door Control Unit Module ECU A4519003401

€23.95

Free delivery: Nov 12 – 13

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Part no. 9367673

Mini Cooper F55 F56 F57 Visual Boost Surround Central Cover Instrument 9367673

€47.95

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Part no. 9116255

BMW E60 E61 Touring Light Module Control Unit ECU LM MAN.LWR 9116255

€23.95

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Part no. 8W0959593H

Audi A4 S4 B9 Front Door Control Module Unit Driver's Side 8W0959593H

€23.95

Free delivery: Nov 12 – 13

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Part no. CH22-15K602-AB

Land Rover L319 Range Rover Sport L405 Keyless Entry Antenna CH22-15K602-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. A2049005908-3

Mercedes W204 COMAND Navigation CD Player Radio Sat Nav Head Unit A2049005908

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9079003207

Mercedes W907 Air Suspension Level Control Unit Module Airmatic A9079003207

€118.95

Free delivery: Nov 12 – 13

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Part no. A1669002700

Parking Brake Module Mercedes W176 W166 Electric Control Unit A1669002700

€23.95

Free delivery: Nov 12 – 13

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Part no. 8U0907468AQ

Audi A1 8X Central Gateway Control Unit Module Relay ECU 8U0907468AQ

€23.95

Free delivery: Nov 12 – 13

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Part no. 6886187

Airbag Module BMW F20 F21 F30 F31 F32 ECU ICM Plus Control Unit Air Bag 6886187

€32.95

Free delivery: Nov 12 – 13

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Part no. A1698209226

Door Control Module Mercedes W169 W245 Relay Unit Right Rear O/S A1698209226

€23.95

Free delivery: Nov 12 – 13

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Part no. 6963014

BMW E60 E61 E63 Passenger Side Door Air Module Control Unit ECU 6963014

€23.95

Free delivery: Nov 12 – 13

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Part no. A2219000804

Parking Module Mercedes W221 W216 Sensor PDC Distance Control Unit A2219000804

€23.95

Free delivery: Nov 12 – 13

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Part no. 8J0035456A

Antenna Amplifier Audi Q5 8R A6 C6 A5 8T Mobile Phone Module Unit 8J0035456A

€23.95

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Part no. A0009006706

Mercedes W205 Adblue Module Exhaust Gas Control Unit ECU BlueTEC SCR A0009006706

€23.95

Free delivery: Nov 12 – 13

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Part no. 7361970

BMW F10 F10 LCI Trunk Function Module Tailgate Boot Control Unit ECU 7361970

€51.95

Free delivery: Nov 12 – 13

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Part no. A4209003305

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit Module A4209003305

€222.95

Free delivery: Nov 12 – 13

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Part no. 03G903143A

VW Golf MK5 1.9 TDI BKC Engine Alternator Mount Support Bracket 03G903143A

€28.95

Free delivery: Nov 12 – 13

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Part no. 9186655

BMW 3 Series E92 Front Right O/S Driver Side Door Wire Wiring Loom 9186655

€23.95

Free delivery: Nov 12 – 13

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Part no. 9243645

Battery Cable BMW X3 F25 Wire Lead Positive Alternator Starter B+ 9243645

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6395400150

Mercedes Vito W639 Battery Terminal Fuse Box Control Unit Module A6395400150

€23.95

Free delivery: Nov 12 – 13

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Part no. A2514402009

Mercedes W164 Front Left Right N/O/S Door Wiring Loom Harness A2514402009

€23.95

Free delivery: Nov 12 – 13

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Part no. A2038000178

Mercedes-Benz C CLK Class W203 C209 Vacuum Solenoid Valve A2038000178

€23.95

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Part no. 6911922

BMW Z4 E85 E86 Interior Fuse Power Distribution Box 6911922 8384629

€23.95

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Part no. 4F1971687S

Audi A6 C6 Rear Door Wiring Left Right N/O/S Harness Loom Cable 4F1971687S

€23.95

Free delivery: Nov 12 – 13

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Part no. 8589145

BMW F20 F21 F30 LCI 118d 318d B47 DDE Engine Control Unit ECU 8589145 Automatic

€189.95

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Part no. A1765401602

Mercedes W176 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1765401602

€23.95

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Part no. 9315682

Body Control Module BMW F20 F21 F30 F31 F32 Comfort Unit FEM ECU LR01 9315682

€104.95

Free delivery: Nov 12 – 13

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Part no. A2661539779-2

Mercedes W169 W245 M266.920 95HP Engine Control ECU Kit A2661539779 Manual

€170.95

Free delivery: Nov 12 – 13

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Part no. A2055409591

Mercedes W205 Door Wiring Loom Harness Cable Rear Right Left N/O/S A2055409591

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G4971694T

Volkswagen Golf Mk7 VII 5G Rear Door Wiring Loom Harness Right O/S 5G4971694T

€23.95

Free delivery: Nov 12 – 13

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Part no. A0035420219-2

Mercedes W639 W906 Relay 5-Pin Control Unit 12A Blue SET X2 A0035420219

€23.95

Free delivery: Nov 12 – 13

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Part no. 9141446

BMW E93 Cabrio Convertible Hydraulic Pump Power Supply Cable 9141446

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6947817

BMW E65 E66 IDrive Control Unit Front Centre Console Module ECU 6947817

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779001704

Mercedes V177 Door Module Rear Right Control Unit A1779001704

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0953549A

Audi S6 C6 Steering Column Wiper Switch Stalk Cruize Control 4F0953549A

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9298961

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9298961

€23.95

Free delivery: Nov 12 – 13

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Part no. AV6T-14A076-AB

Ford Focus Mk3 Fuse Box Relay Cover Cap Flap AV6T-14A076-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. LR036132

Range Rover L405 Engine Wiring Loom Harness Cable 4.4 Diesel CK52-9H589-AC

€218.95

Free delivery: Nov 12 – 13

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Part no. 7516404

BMW E60 Cable Starter Generator Alternator B+ Base Wire Harness 7516404

€23.95

Free delivery: Nov 12 – 13

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Part no. 5Q0907530AH

Audi A3 S3 RS3 8V Gateway Control Module GW MQB Mid Unit ECU 5Q0907530AH

€23.95

Free delivery: Nov 12 – 13

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Part no. 6858547

BMW X3 F25 ICM Control Unit Air Module SRS ECU 6858547

€47.95

Free delivery: Nov 12 – 13

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Part no. 9262752-2

Display Screen BMW F20 F21 F22 Central Information Display Screen 6,5" 9262752

€23.95

Free delivery: Nov 12 – 13

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Part no. 8P0035785-1

Audi A3 8P Multimedia Interface Unit Module Bracket Mount 8P0035785

€23.95

Free delivery: Nov 12 – 13

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Part no. A2219000100

Mercedes W221 Digital Audio DAB Receiver Control Unit Module A2219000100

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907801E

AUDI A7 4G8 Electric Handbrake Control Module TRW 4H0907801E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5E5035577B

Skoda Octavia 5E Antenna Amplifier Aerial Control Module Unit 5E5035577B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8580165

Mini F54 F55 F56 F57 F60 B47 Wiring Harness Engine Glow Plug Module 8580165

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0045450201

Mercedes Sprinter W906 Fuse Prefuse Box Relay Electrical Unit A0045450201

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0959651

Seat Leon Mk3 5F Deployment Crash Impact Sensor Front Centre 3Q0959651

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8614276

BMW F20 F21 F30 LCI M140i 340i Alternator Generator 180A BOSCH 8614276

€37.95

Free delivery: Nov 12 – 13

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Part no. A1669005811

Door Module Mercedes W176 W246 Front Right O/S Control Unit Module A1669005811

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W1959593

Audi Q5 FY Front Door Control Module Unit Right O/S Side 8W1959593

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009822523

Mercedes W156 W242 W246 W447 Relay 4-Pin Black Hella A0009822523

€23.95

Free delivery: Nov 12 – 13

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Part no. 9113355

BMW E87N E90 E91 Mini Cooper R56 DC/DC Torque Converter Wandler 9113355

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465401850

Prefuse Box Mercedes W176 OM607 Fuse Relay Control Unit A2465401850

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118209626

Mercedes W211 W219 Alarm Control Module Unit ECU A2118209626

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7810863

Battery Cable BMW X3 F25 Wire Lead Positive Alternator Starter B+ 7810863

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8621190

BMW F20 F22 F30 LCI Electric Line Cable Power Distribution Module 8621190

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9188377

BMW F01 KaFAS Camera Front Windscreen Lane Departure Camera Module 9188377

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P4945095E-3

Audi A3 8P Trunk Lid Tail Lamp Light Wiring Cable Rear Left N/S 8P4945095E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6974631

BMW Z4 Z3 Series E36 E85 Module Radar Burglar Alarm Sensor

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009822723

Mercedes W205 Estate Fuse Relay Box Module Control A0009822723

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1728202989

Mercedes SLK R172 Roadster Antenna Amplifier Control Module A1728202989

€23.95

Free delivery: Nov 12 – 13

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Part no. 6958447

BMW 7 Series E65 Control Unit Door Rear Passenger Side Hinten Low BFT 6958447

€23.95

Free delivery: Nov 12 – 13

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Part no. 6837092

BMW G30 G12 Fuse Relay Box Rear Trunk Power Distribution B + Box Basis 6837092

€23.95

Free delivery: Nov 12 – 13

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Part no. 8570673-2

Alternator Generator BMW F07 F10 F11 FN57N N57Z Diesel Engine Valeo 8570673

€70.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. A0009004007

Mercedes W204 W222 Fuel Pump Control Unit Module A0009004007

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8631672

BMW 1 3 Series F20 F30 LCI M140i 340i Engine Gearbox Module Wiring Loom Harness

€94.95

Free delivery: Nov 12 – 13

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Part no. 9348358

BMW E60 Body Comfort Control Unit DDE Module ECU 9348358

€56.95

Free delivery: Nov 12 – 13

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Part no. 7473684

Door Cable BMW F25 F26 Right O/S Wiring Loom Harness Handle Light Lamp 7252538

€23.95

Free delivery: Nov 12 – 13

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Part no. 6920472

BMW 7 Series E65 E66 E67 Sensor Vehicle Centre AIRBAG

€23.95

Free delivery: Nov 12 – 13

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Part no. 9198826

BMW 1 3 Series E81 E87 E90 LCI Professional Navigation System Car Computer CIC

€237.95

Free delivery: Nov 12 – 13

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Part no. 6C0907361E

Fuse Box Audi A1 Seat Ibiza Control Module Relay Box 6C0907361E

€75.95

Free delivery: Nov 12 – 13

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Part no. 4H0907468AC

Audi A8L 4H Gateway Control Module Unit 4H0907468AC

€80.95

Free delivery: Nov 12 – 13

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Part no. 6M5Y-12A650-AF

Ford Focus St Mk2 Engine Control ECU 226HP Petrol Manual Gearbox 6M5Y-12A650-AF

€313.95

Free delivery: Nov 12 – 13

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Part no. 8P0953549

Audi A3 8P Steering Module Control Unit ECU 8P0953549

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H0035411

Volkswagen Golf Mk8 A-Pillar Speaker Tweeter Sound Left Right N/O/S 5H0035411

€23.95

Free delivery: Nov 12 – 13

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Part no. 8506199-3

BMW E60 E61 LCI 520d Diesel N47 Engine ECU Kit DDE 8506199 CAS 3 + Key

€170.95

Free delivery: Nov 12 – 13

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Part no. DH22-14B192-BA

Land Rover Discovery Sport L550 Relay 4-Pin Unit 12V 20A Black DH22-14B192-BA

€23.95

Free delivery: Nov 12 – 13

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Part no. 7616120

Alternator BMW F20 F21 F30 F31 F36 Petrol N55 Generator 210A 7616120

€66.95

Free delivery: Nov 12 – 13

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Part no. 3450343

Ultra-sonic Alarm Mini Cooper R55 R56 System Module 3450343

€23.95

Free delivery: Nov 12 – 13

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Part no. 9330951

Control Unit BMW F01 F07 F10 F11 F25 Air Module ECU Unit Continental 9330951

€37.95

Free delivery: Nov 12 – 13

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Part no. 7P6907357C

Audi A3 8V VW Touareg 7P Xenon Headlight Module Control Unit 7P6907357C

€28.95

Free delivery: Nov 12 – 13

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