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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Electrical Wiring Cable Mercedes W164 W251 Radio Media Interface A1648202715

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118209126

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045400440

Battery Bracket Mercedes W204 W207 Battery Mount Support Holder A2045400440

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2709060700

Mercedes W176 Starter Motor 12V Bosch M270 Petrol Engine A2709060700

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715451332

Mercedes SLK R171 Parking Distance Aid Sensor Control Unit Module A1715451332

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1679000111

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

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9075401205

Mercedes W907 Starter Wiring Battery Alternator Cable Harness Loom A9075401205

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

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

If paid before 14:00

Part no. A2129005200

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

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009003713

Mercedes W205 Tyre Pressure Control Module Unit A0009003713

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465402150

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

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1668210351

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9079005303

Mercedes Sprinter W907 W910 Control Unit Module ECU A9079005303

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1765405608

Mercedes-Benz A-Class W176 Rear Right Door Wiring Cable A1765405608

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055409309

Door Wiring Mercedes W205 C253 Passenger Side Cable Harness Loom A2055409309

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009005602

Mercedes W204 W212 Control Unit AMG Drive Select Module ECU A0009005602

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645400436

Mercedes ML164 Alternator Wiring Starter Motor Harness OM642 A1645400436

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2125402705

Mercedes W212 Rear Suspension Level Sensor Wiring Loom Cable Harness A2125402705

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2038204002

Mercedes-Benz CLC CL203 Rear Left Right Door Loudspeaker Speaker A2038204002

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695406945

Mercedes SLK R171 Gateway Control Unit Gateway Module ECU A1715405145

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6511590246

Wiring Cable Cover Mercedes W204 W212 W906 OM651 Engine Duct Bracket A6511590246

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715408405

Mercedes R171 Seat Adjuster Wiring Loom Harness Driver Side A1715408405

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2038209089

Mercedes W203 C209 C215 W163 W220 W639 CD Changer Magazine Cartridge A0028206289

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0131545602

Mercedes W204 W212 Alternator Generator M272 180A 14V Petrol Engine A0131545602

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025427419

Mercedes-Benz A B E M W169 W245 W210 W163 Relay 5-Pin Yellow Hella A0025427419

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129006924

Mercedes W207 W212 SAM Module Fuse Box Relay Control Unit A2129006924

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2115452301

Mercedes-Benz E-Class S211 W211 Fuse Box Terminal Connection Unit A2115452301

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2034404913

Mercedes-Benz CLC CL203 Rear Tailgate Boot Lid Wiring Harness Loom A2034404913

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129006824

Front Fuse Box Mercedes W204 S204 Relay Control Unit SAM Module A2129006824

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049000607

Mercedes W204 W207 Air Suspension Module Regulation Control Unit A2049000607

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465410105

Battery Cover Mercedes C117 W176 W246 Frame Bracket Mount Holder A2465410105

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2649000700-2

Mercedes W205 C 200 264915 264.915 184HP Engine ECU Module A2649000700 Automatic

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059007123

Mercedes W176 W212 W246 Telematics Communication Control Unit Module A2059007123

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9079000304

Mercedes Sprinter W907 W910 Air Module Sensor Unit ECU A9079000304

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469000709

Mercedes W246 Air Module Control Unit ECU Module A2469000709

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0061514501

Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2025402373-1

Mercedes A C E Class 1 W169 W203 W211 OBD Diagnostic Plug Cover A2025402373

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1638200089

Mercedes-Benz M-Class ML W163 Radio Aerial Antenna Amplifier A1638200089

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9079003303

Mercedes W907 Front Radar Distance Control Unit Module A9079003303

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139001722

Mercedes W213 W907 Transmission Gearbox Control Unit Module ECU A2139001722

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635403110

Mercedes-Benz M ML W163 Rear Left Right Door Wiring Loom Harness A1635403233

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9065410740

Mercedes Sprinter W906 Battery Cover Frame Bracket Mount Holder A9065410740

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465411005

Battery Cover Mercedes C117 W176 W246 Box Trim Lid Panel Housing A2465411005

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6461540002-1

Alternator Mercedes Sprinter W906 Diesel OM646 Engine Alternator A6461540002

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469000516

Radio CD Player Mercedes W176 W246 COMAND Nav Sat Head Unit A2469000516

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469009413

Mercedes W176 W246 Control Unit Body Control Module ECU A2469009413

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0035423019

Power Relay Control Mercedes W176 W246 Module 4 Pin 12V 20A A0035423019

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2044404732

Mercedes W204 Estate PDC Wiring Rear Bumper Parking Sensor Cable A2044404732

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075409334

Mercedes-Benz E-Class W207 Cabrio A207 Battery Ground Cable Wiring Mass Lead

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048700185

Mercedes W204 Bluetooth Control Unit Module Media Interface ECU A2048700185

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9069820109

Mercedes Sprinter W906 Positive Battery Terminal Cover Cap Trim Red A9069820109

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669059302-2

Mercedes W166 Rear View Reversing Camera Trunk Lid Tailgate A1669059302

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645403706

Wiring Mercedes X164 Dashboard Lower Control Panels Switch Harness A1645403706

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669003602

Mercedes W204 R172 DAB Receiver Digital Audio Control Unit Module A1669003602

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059000328

Door Module Mercedes GLC X253 Front Door Left Control Module A2059000328

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6397600340

Mercedes Vito W639 Door Handle Cable Catch Bowden Cable Rear A6397600340

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1121535379

Mercedes W220 S350 M112.972 245HP Engine Module ECU A1121535379 Automatic

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1776203400

Mercedes W177 W247 Battery Bracket Mount Holder Support A1776265300

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669007609

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

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 237104376R

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059001240

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698208526

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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

If paid before 14:00

Part no. A1669002700

Parking Brake Module Mercedes W176 W166 Electric Control Unit A1669002700

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698209226

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2219000804

Parking Module Mercedes W221 W216 Sensor PDC Distance Control Unit A2219000804

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006706

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4209003305

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit Module A4209003305

€222.95

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

If paid before 14:00

Part no. A2514402009

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2038000178

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1765401602

Mercedes W176 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1765401602

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2661539779-2

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

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

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. A0035420219-2

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

€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. 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. 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. 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. A0009822523

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

€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. 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

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. A0005457616

Mercedes R171 VDO Transmission Control Unit Module EGS A0005457616

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4478260000

Mercedes Vito W447 Headlight Turn Indicator Light Socket Plug A4478260000

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695407405

Mercedes W169 Wiring Loom Cable Door Front Left Right N/O/S A1695407405

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469052602

Dashboard Panel Mercedes W176 W246 Switch Dynamic Select Start/Stop A2469057902

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645400350-1

Mercedes ML W164 Fuse Prefuse Box Jump Start Terminal A1645400350

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645403230

Mercedes ML W164 Positive Battery Terminal Cable Lead Wiring A1645403230

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1679003504

Ignition Switch Mercedes W177 Electronic Anti Theft Control Module A1679003504

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401900

Mercedes W205 Parking Sensor Wiring Rear Bumper PDC Loom Cable A2055401900

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6395407809

Wiring Loom Mercedes W639 Vito Cable Sliding Door Rear Left N/S A6395407809

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2199001100

Mercedes W219 Head Unit CD Player Navigation COMAND Radio Audio Unit A2199001100

€294.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469005315

Transmission Module Mercedes W176 OM607 Diesel Control Unit A2469005315

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055404913

Mercedes W205 Wiring Cable Harness Center Console Ambient Lightning A2055404913

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2128205026

Mercedes W212 Impact Crash Sensor Door Left Right A2128205026

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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