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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Mercedes W176 W245 Front Right Door Wiring Loom Harness A2465403005

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2117320225

Mercedes W211 Cable Duct Guide Housing Rear Right O/S A2117320225

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2124400706

Wiring Harness Mercedes W212 LED Lighting Air Nozzle Cable A2124400706

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2115460580

Wiring Holder Mercedes W211 Cable Loom Harness Cover Channel A2115460580

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1665459340

Mercedes W166 C292 Fuse Box Relay Control Unit Module A1665459340

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2465400950-1

Mercedes C117 W176 W246 Fuse Box Power Distribution Box A2465400950

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2057200522

Mercedes GLC X253 Front Door Trim Cover Panel Strip Left N/S Black A2057200522

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049009907-2

Mercedes W204 Navigation Radio Player Head Unit Computer A2049009907

€227.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059006047

SAM Module Mercedes W205 GLC X253 Rear Comfort Control Unit ECU A2059006047

€127.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0535450226

Mercedes Sprinter W906 Fuse Box Connector Plug Socket A0535450226

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9075406960-1

Mercedes Sprinter W907 Fuse Box Prefuse Box Module F150/1 - MFB-1 A9075406960

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2829062000

Starter Motor Mercedes C118 W177 C247 Petrol OM282 Starter Motor A2829062000

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139002422

Mercedes W213 Front Door Module Control Module Unit Right O/S A2139002422

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1665400141

Mercedes W166 Petrol Engine HV Battery Earth Ground Line Cable Wire A1665400141

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059009643

Mercedes W205 Telematics Bluetooth Module Control Unit ECU A2059009643

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1665450403

Mercedes W166 Junction Fuse Box Cover Housing Positive Terminal A1665450403

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1779061002

Fuse Box Mercedes W177 Power Distribution Junction Relay Unit A1779061002

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1725408705

Mercedes R172 Electrical Wiring Harness Cable Window Regulator A1725408705

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2465403805

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0001502780

Mercedes W203 CL203 W204 M272 Petrol Ignition Coil Cable Connector A0001502780

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2465404300

Mercedes W176 Door Harness Loom Cable Wiring Rear Right A2465404300

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9065410740

Mercedes Sprinter W906 Battery Cover Frame Bracket Mount Holder A9065410740

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1669001814

Mercedes W166 SAM Body Control Unit Module Fuse Box A1669001814

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1725408605

Mercedes SLK R172 Sun Visor Wiring Harness Cable Loom A1725408605

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0065454601

Energy Distributor Mercedes W204 OM656 Power Control Unit Module A0065454601

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6401500434-1

Mercedes W169 A160 CDI OM640.942 82HP Engine Unit ECU Kit A6401500434 Automatic

€227.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2475400600

Mercedes W177 Rear Axle Wheel RPM Speed Right Sensor Wire Harness A2475400600

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A4145400130

Mercedes-Benz Vaneo W414 Cable Starter Line Positive Line Battery A4145400130

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2518703390

Mercedes W251 Rear Passengers Entertainment Control Unit A2518703390

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4148200526

Mercedes Vaneo W414 Front Left Right Door N/O/S Control Unit Module A4148200526

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059008826

Mercedes C205 SAM Module Rear Comfort Control Unit ECU A2059008826

€28.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A2055402594

Mercedes W205 Hybrid Power Electronic Drive Control Unit Wiring A2055402594

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2219005503

Mercedes W221 Air Suspension Module Regulation Control Unit A2219005503

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0005468502

Battery Cover Mercedes W205 W212 Battery Positive Pole Cover Red A0005468502

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A7899061200

Mercedes C205 Control Unit Module A7899061200

€208.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009003310

Mercedes W205 W213 Fuel Pump Module Control Unit ECU A0009003310

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1779001704

Mercedes V177 Door Module Rear Right Control Unit A1779001704

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2218203375

Mercedes W221 Bluetooth Antenna AMP Amplifier Module A2218203375

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2466200028

Mercedes W176 Battery Support Holder Bracket Mount A2466200028

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2188200187

Mercedes W221 Multimedia Interface USB Adapter Port Socket A2188200187

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2466280041

Mercedes-Benz A B Class W176 W246 Battery Holder Mount Bracket A2466280041

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6395400150

Mercedes Vito W639 Battery Terminal Fuse Box Control Unit Module A6395400150

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1725400035

Electrical Cable Mercedes R172 Transmission To Body Wiring Harness A1725400035

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1775401858

Mercedes W118 W177 W247 Starter Alternator Wiring Loom Harness Cable A1775401858

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2229004619

Mercedes W205 W213 C238 Bluetooth Hermes LTE Control Unit Module A2139002210

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1729008500-2

Mercedes W166 W204 Display Screen Information Navigation Dashboard A1729008500

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1331420500

Mercedes W176 C117 A45 CLA45 Engine Sound Generator Control Unit A1331420500

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1775401629

Mercedes W177 Rear Bumper PDC Wiring Loom Parking Sensor A1775401629

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6394405009

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6394405009

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139065706

Mercedes W205 W213 Front Engine Compatment Fuse Relay Box Module A2139065706

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2215400210

Mercedes W221 Door Wiring Cable Rear Right O/S Door Loom Harness A2215400210

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059006822

Module Mercedes W205 Relay Body Control Module Unit SAM BCM A2059006822

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6549001400-1

Mercedes W213 E220 CDI 654.920 194HP Engine ECU Kit A6549001400 Automatic

€455.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055407067

Mercedes W205 Front Door Harness Wiring Loom Passenger Side A2055407167

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139002817

Mercedes W177 W205 C257 Radar Sensor Front Control Unit Module A2139002817

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055403606

Mercedes W205 Front Axle Damper Adjustment Right O/S Wiring Harness A2055403606

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1330901500

Mercedes W176 A45 C117 CLA45 Engine Sound Generator Valve A1330901500

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2198203326

Mercedes C219 Rear Door Control Module Unit Left N/S A2198203326

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1715409506

Mercedes R171 Window Control Switch Wiring Cable Driver Side A1715409506

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2535400901

Starter Cable Mercedes W205 GLC X253 M274 Electrical Wiring Harness A2535400901

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009003713

Mercedes W205 Tyre Pressure Control Module Unit A0009003713

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055409591

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

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129004307

Display Screen Mercedes W204 W212 Information Navigation Dashboard A2129004307

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2225403150

Fuse Box Mercedes W205 Front Passenger Side Footwell Fuse Box A2225403150

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1175401205

Mercedes C117 Drivers Door Wiring Harness A1175401205

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2218702993

Mercedes CL W216 W221 Air Module Control Unit A2218702993

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1669009311

SAM Module Mercedes ML W166 Center Electrics Control Modul A1669009311

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1775400358

Mercedes W177 Ground Line Cable Wire A1775400358

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009002308

Mercedes W447 W906 Adblue Module Exhaust Gas Control Unit ECU A0009002308

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009068802

Alternator Generator Mercedes Sprinter W906 Engine Diesel 180A 14V A0009068802

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2215407710

Mercedes W221 Battery Negative Terminal Cable Wiring Wire A2215407710

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6401503634-2

Mercedes W169 W245 OM640.940 109HP Engine Control ECU Kit A6401503634 Automatic

€227.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2189006806

Mercedes W207 Harman Control Unit Module Amplifier Premium Sound A2189006806

€631.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2513200158-1

Valve Block Mercedes W251 W906 Air Suspension Control Unit Module A2513200158

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0038201926

Mercedes W221 Door Crash Impact Sensor Rear Left Right N/O/S A0038201926

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055401492

Mercedes W205 Door Wiring Harness Door Control Loom Front Left N/S A2055401492

€104.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059004113

Mercedes S205 Display Screen Multimedia Navigation Sat Head Unit A2059004113

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4474404705

Engine Wiring Mercedes Vito W447 OM651 Engine Harness Cable A4474404705

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139051500-1

Mercedes W213 C238 Pressure Crash Impact Sensor Pedestrian A2139051500

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059009527

Mercedes W205 Air Module ICM SRS Control Unit ECU A2059009527

€47.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A1635407405

Mercedes ML W163 Front Electric Seat Adjust Wiring Harness Cable A1635407405

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2128208826

Mercedes W212 Door Control Module Unit ECU Rear Right O/S A2128208826

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2535405429

Mercedes C253 OM656 Diesel Engine Motor Wiring Loom Cable Harness A2535405429

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2479008615

Mercedes GLC X253 Camera Lane Assist Control ECU Module Unit A2479008615

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055408104

Battery Cable Mercedes W205 X253 Diesel OM651 Alternator Wiring A2055408104

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4144460116

Mercedes W414 Central Locking Lock Alarm Control Module ECU A4144460116

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9069820109-1

Mercedes W907 Positive Battery Terminal Cover Cap Trim Red A9069820109

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6421500326

Mercedes W204 OM642 224HP Engine Control ECU A6421500326 Automatic

€165.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009055700

Mercedes W639 Brake Yaw Rate Sensor ECU A0009055700

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055400292

Mercedes W205 Door Wiring Harness Door Control Loom Front Right O/S A2055400292

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129018508

Mercedes W212 Air Bag Control Unit ECU AirBag Sensor Module A2129011105

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055404767

Mercedes C205 Front Door Harness Wiring Loom Driver's Side A2055404767

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129060005-1

Mercedes W212 Fuse Box Module Rear Relay Electric Control Unit SAM A2129060005

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2075404107

Mercedes W204 M276 NOX Sensor Adapter Left N/S Harness Wiring Cable A2075404107

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1725401209

Mercedes R172 Teleaid Monitoring Sensors Wiring Harness Cable Loom A1725401209

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2124400414

Mercedes C207 W207 W212 Fuel Pump Module Diesel Control Unit ECU A2124400414

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

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