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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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. A1779001203

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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. 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. 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. A2469003417

Parking Brake Module Mercedes W176 W231 W246 Electric Control Unit A2469003417

€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. 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. A2075401102

Mercedes W207 A207 C207 Loudspeaker Cable Wiring Loom Harness

€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. 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. 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. 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. A2439000800

Drivetrain Module Mercedes H243 Transmission Control Unit ECU A2439000800

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009822112

Energy Distributor Mercedes W205 W238 Power Control Unit Module A0009822112

€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

If paid before 14:00

Part no. A1775407932

Mercedes W177 W247 Positive Battery Cable Lead Wire Starter A1775407932

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118203375

Antenna Booster Mercedes W211 Rear Boot Lid Tailgate Amplifier A2118203375

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009068706

Mercedes W205 C43 Alternator Generator VALEO 200A 3.0 Petrol A0009068706

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129001929

Mercedes W176 Keyless Control Module Unit ECU A2129001929

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635402333

Mercedes-Benz M ML W163 Centre Console Wiring Harness Cable Loom A1635402333

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075400440

Mercedes-Benz E-Class A207 Additional Battery Tray Holder Mounting Bracket

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6429004300

Mercedes W221 Engine Control Unit Module ECU A6429004300

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1179009200

Mercedes W176 Air Module Belts System Control Unit ECU Bosch A1179009200

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025428719-1

Mercedes W176 W204 W207 W166 Relay 4 Pin Grey Hella SET X2 A0025428719

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049007508

Mercedes W204 Display Screen Monitor Radio Sat Nav Navigation Unit A2049007508

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469004519

Gearbox Module Mercedes W176 W246 Control Unit ECU Automatic A2469004519

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048709426

Mercedes W204 Air Module Control Unit SRS Sensor ECU A2048709426

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469066600

Fuse Box Mercedes W156 W176 W246 Front Relay Control Unit Module A2469066600

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465403805

Mercedes W176 W245 Front Left N/S Door Wiring Loom Harness A2465403805

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729017601

Mercedes SLK R172 Front Air Module SRS Control Unit ECU A1729017601

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229004618

Mercedes C205 Keyless Go Easy Entry Control Module Unit A2229004618

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135406303

Mercedes W213 PDC Parking Sensor Wiring Loom Cable Rear Bumper A2135406303

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009053816

Mercedes C118 W117 Battery Cable Negative Terminal Wiring A0009053816

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479007708

Rain Sensor Mercedes C118 W177 W247 Front Windscreen Light Unit A2479007708

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6549061400

Starter Motor Mercedes W213 S213 W238 OM654 Diesel Engine Actuator A6549061400

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2205404208

Mercedes W220 Rear PDC Parking Sensor Wiring Loom A2205404208

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1644400937

Mercedes ML W164 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1644400937

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779005104

Mercedes W177 Ambient Lighting Control Module Unit ECU A1779005104

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0045423918

Yaw Sensor Mercedes ML W164 W221 W251 ESP Rotation Rate Unit Module A0045423918

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469000012-4

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

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025428819

Mercedes W176 W246 Relay Current 4 Pin 12V Hella A0025428819

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519007401-10

Mercedes A207 E250CDI Blue Efficiency 651911 204HP Engine Module ECU A6519007401

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229000013

Door Module Mercedes W205 X253 Front Door Right O/S Control Unit A2229000013

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775401731

Mercedes W177 M282 Wiring Harness Battery Starter Motor Alternator A1775401731

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006007

Fuel Pump Module Mercedes W205 Control Unit ECU A0009006007

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129001306

Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129001306

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006102

Mercedes Vito W639 ECU Control Unit Crash Impact Module Air Module A0009006102

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009822923

Mercedes W177 W205 W247 Relay Fuse Unit Module 4 Pins Grey A0009822923

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695402733

Mercedes W169 W245 Cable Loom Wiring Parking Sensors Rear A1695402733

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049006301-1

Mercedes W204 Rear SAM Module Fuse Box Control Unit A2049006301

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2649001200

Mercedes W177 A35 AMG 306HP M260.920 4-Matic Engine ECU Control Unit A2649001200

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2198200726

Door Module Mercedes C219 Front Right Door O/S Control Unit Module A2198200726

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6399003300

Mercedes Vito W639 Parking Module PDC Distance Control Unit Sensor A6399003300

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645400182

Mercedes ML W164 GL X164 Fuse Box Cover Trim Panel Cap A1645400182

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2475411000

Mercedes C118 W177 W247 Battery Box Tray Trim Housing Cover A2475411000

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645402372

Mercedes W164 W251 Fuse Relay Module Rear Fuse Box Unit A1645402372

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139005528

Mercedes W205 W213 Ignition Central Lock Control Unit Module ECU A2139005528

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6071500133

Engine Wiring Mercedes W176 W246 Diesel OM607 Loom Harness Cable A6071500133

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2195450732

Mercedes CLS W219 Parking Sensor PDC Distance Control Unit Module A2195450732

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045450003

Mercedes W204 Fuse Box Battery Starter Cable Cap Cover Top Lid A2045450003

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729008500-2

Mercedes W166 W204 Display Screen Information Navigation Dashboard A1729008500

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2079011900

Air Module Mercedes W207 A207 Control Unit ECU Air Module Sensor A2079011900

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6511501433

Mercedes W176 W246 Glow Plug Wiring Harness Loom OM651 Engine A6511501433

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695400606

Mercedes-Benz A W169 Parktronic Parking Sensor Wiring Cable Rear PDC A1695400606

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049009501

Fuse Box Mercedes W204 Rear SAM Relay Control Unit Module A2049009501

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009829608

Mercedes W204 W212 W222 Auxiliary Additional Generator Battery A0009829608

€165.95

Free delivery: Nov 16 – 20

If paid before 14:00

Part no. A2519005200

Mercedes R350 V251 Head Unit Radio Player Navigation Media Bluetooth A2519005200

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6395406209

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406209

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059002629

Surround View Camera Mercedes W205 W447 Camera Control Unit Module A2059002629

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1665402150

Mercedes W166 Seat Fuse Relay Junction Box Block A1665402150

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229005315

Bluetooth Module Mercedes W176 W205 Multimedia Control Unit ECU A2229005315

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6429002900-4

Mercedes W204 C350 CDI OM642.830 Engine Module ECU Kit A6429002900 Key Lock

€503.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779005505

Door Module Mercedes W177 W247 Rear Left Right N/O/S Control Unit A1779005505

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479008615

Mercedes GLC X253 Camera Lane Assist Control ECU Module Unit A2479008615

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0035421619

Mercedes W177 Relay 052 Engine Fuse Box Relay Slot B D E 70A Tyco A0035421619

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009820123

Relay Mercedes W166 Voltage Dip Protection Start/Stop Relay Module A0009820123

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6395406509

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406509

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005459812

Mercedes Vito W447 W213 OM654 Power Distribution Relay Unit Module A0005459812

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009821923

Mercedes W205 Interior Trunk Fuse Box Automotive Pink Relay A0009821923 Red

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645402408

Mercedes ML W164 Rear Door Ribbon Electrical Cable Wiring Right O/S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669068801-2

Mercedes ML W166 Rear Lamp Tailgate Light Wire Connector Right O/S A1669068801

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779004106

Door Module Mercedes C118 W177 W247 Front Right O/S Control Unit A1779004106

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4478200087

Mercedes Sprinter W906 Connector AUX USB Adapter Port Socket A4478200087

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009051910

Battery Cable Mercedes W177 W247 Negative Lead Terminal Harness A0009051910

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1665402450

Mercedes ML W166 Fuse Box Front Relay Control Unit Module A1665402450

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139008430

Mercedes W910 Gearbox Control Module A2139008430

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059008618

Mercedes W205 Module SRS Control Module Unit A2059008618

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049060305-1

Mercedes W204 SAM Module Control Unit Rear A2049060305

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2711500420

Mercedes W204 M271 Solenoid SOLV Valve Wiring Harness Petrol A2711500420

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9079051202

Mercedes Sprinter W907 Battery Wire Negative Lead Cable A9079051202

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1644407110

Mercedes W164 Wiring Loom Cable Harness Door Rear Left Right A1644407110

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0001502780-1

Mercedes W203 CL203 W204 M272 Petrol Ignition Coil Cable Connector A0001502780

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009003206

Mercedes W205 W222 Fuel Pump Module Control Unit A0009003206

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059006822

Module Mercedes W205 Relay Body Control Module Unit SAM BCM A2059006822

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075403434

PDC Wiring Mercedes W204 W207 Parktronic Parking Sensor Cable Rear A2075403434

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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