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 W212 Front Bumper PDC Wiring Loom Harness A2125407313

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1645403130

Mercedes W164 Positive Battery Cable Wiring A1645403130

€170.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2038204864-1

Mercedes CL203 Rear Tail Light Lamp Wiring Cable Harness Right O/S A2038204864

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0018276804

Mercedes W207 Connection Media Interface Cable iPod Wiring Lead A0018276804

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009001704

Fuel Pump Module Mercedes W176 W204 C207 W212 W246 Control Unit ECU A0009001704

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2218204189

Mercedes W221 Antenna Amplifier Aerial A2218204189

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2135404953

Mercedes W205 Battery Cable Electrical Wiring Harness Hybrid A2135404953

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1775408609

Door Wiring Mercedes W177 W247 Front Passenger Side Cable Harness A1775408609

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9075407160

Mercedes W907 W910 Battery Electrical Wiring Harness Ground Line A9075407160

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059004013

Mercedes W205 Air Conditioning Control Module A/C ECU Unit A2059004013

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129060205

SAM Module Mercedes W207 A207 C207 Rear Control Unit ECU A2129060205

€99.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2044402607

Earth Ground Cable Mercedes W204 W207 Battery Wiring Loom Engine A2044402607

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9105400805

Mercedes Sprinter W910 Fuel Tank Wiring Loom Cable Harness A9105400805

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059007521

Module Mercedes W205 Air Conditioning A/C System Control Module A2059007521

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055455400

Mercedes W205 Battery Power Connection Wiring Bar Rail Busbar A2055455400

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2661536779-1

Mercedes W245 M266.920 95HP Engine Control Module Kit A2661536779 Automatic

€127.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A7899061600

Mercedes W205 Converter Unit Module Control ECU DCDC48V A7899061600

€232.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055405626-1

Mercedes C Class W205 C350e Hybrid Battery Wiring Loom A2055405626

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9069820109-1

Mercedes W907 Positive Battery Terminal Cover Cap Trim Red A9069820109

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1669003602

Mercedes W204 R172 DAB Receiver Digital Audio Control Unit Module A1669003602

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1175402601

Mercedes C117 Parking Sensor Wiring Rear Bumper Parktronic Loom Cable Harness

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0065424220

Mercedes W164 W251 High Tone Horn Signal Right O/S A0065424220

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1679009611

Mercedes W205 W213 X253 Door Module Rear Right O/S Control Unit ECU A1679009611

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1685405008

Mercedes A-Class W168 Door Cable Harness Wiring Loom Front Right A1685405008

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129001806

Mercedes A207 C207 SAM Control Unit Module Fuse Box Rear A2129001806

€142.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0055461040

Energy Distributor Mercedes W204 W212 W906 Power Block Control Unit A0055461040

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2749060400

Mercedes W204 W212 C207 M274 OM651 Starter Motor Engine Starter A2749060400

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2065406045

Mercedes W206 Rear Door Harness Cable Wiring Loom Left N/S A2065404116

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2117320225

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2218202910

Mercedes W221 Dashboard Instrument Cluster Panel Switch A2218202910

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055402237

Mercedes W205 Battery Cable Elelctrical Wiring Harness Loom Hybrid A2055402237

€113.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1775405801

Mercedes W177 W247 Door Wiring Rear Left Right Cable Harness A1775405801

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2465410205

Mercedes W176 W246 Battery Box Trim Housing Cover Support Panel A2465410205

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2056186100

Mercedes W205 W238 Rear Battery Holder Bracket Mount Strap Clamp A2056186100

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1669005012

Mercedes W166 Front Door Module Left N/S Control Unit ECU A1669005012

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1688300072

Mercedes-Benz A-Class W168 Intake Temperature Sensor A1688300072

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2205404508

Mercedes W220 Door Wiring Harness Rear Left N/S Cable A2205404508

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0005401869

Mercedes-Benz A208 C208 W208 W210 Battery Cable Box Connector A0005401869

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1669001814

Mercedes W166 SAM Body Control Unit Module Fuse Box A1669001814

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1725408605

Mercedes SLK R172 Sun Visor Wiring Harness Cable Loom A1725408605

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2215407710

Mercedes W221 Battery Negative Terminal Cable Wiring Wire A2215407710

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2215408045

TPM Module Mercedes W221 S500 C216 Tire Pressure System Module RDK A2215408045

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1694710141

Mercedes W169 W245 Fuel Pump Cable Harness Bracket Mount Trim A1694710141

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6397600340

Mercedes Vito W639 Door Handle Cable Catch Bowden Cable Rear A6397600340

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0993200058

Mercedes W205 C219 W222 Valve Block Air Suspension Control Module A0993200058

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1648207726

Door Module Mercedes ML W164 Front Left N/S Control Unit Module A1648207726

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055402224

Mercedes S205 X253 Center Console Wiring Loom Electrical Harness A2055402224

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1698208626

Mercedes-Benz A B W169 W245 Door Control Module Right Rear O/S A1698208626

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2044400638

Mercedes C204 Wiring Cable Harness Front Passenger Door Wiring Loom A2044400638

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2711500391-9

Mercedes R172 BlueEFFICIENCY 271.861 184HP Engine ECU Kit A2711500391 Key + Lock

€398.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2188201926

Mercedes CLS C218 Bi-Xenon Headlight Ballast Module Control Unit A2188201926

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059000828

Door Module Mercedes GLC X253 Rear Door Left Control Module A2059000828

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1645400624

Mercedes W164 Fuse Box Relay Housing Cover A1645400624

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. A2044400538

Mercedes C204 Wiring Cable Harness Front Driver Door Wiring Loom A2044400538

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1679006912

Mercedes C118 W177 W247 Keyless Go Module ECU Entry Control Unit A1679006912

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1729006008

Mercedes W204 W212 W176 Media Interface Control Unit Module A1729006008

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9065400041

Mercedes Sprinter W906 Battery Cable Negative Lead Wiring Harness A9065400041

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1648209485

Mercedes ML W164 Door Module Front Right O/S Control Unit Module A1648209485

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055401724

Mercedes W205 GLC X253 Centre Console Wiring Harness Cable Loom A2055401724

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0005465402

Mercedes C117 W176 W246 Positive Battery Terminal Cover Cap Trim Red A0005465402

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2709060026-1

Starter Motor Mercedes W176 W246 Engine Starter Unit 12V Denso A6459060300

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469067100-1

Mercedes W176 W246 C117 Fuse Relay Box Unit Cables Wiring Loom A2469067100

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A7899061200

Mercedes C205 Control Unit Module A7899061200

€208.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. A1718200015

Mercedes SLK R171 Rear Window Heating Cable Loom Heat Wiring Harness A1718200015

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009006318

PDC Module Mercedes W205 W213 W247 Parking Assistant Parktronic Unit A0009006318

€99.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2048202275

Mercedes W204 W212 C218 Bluetooth Antenna Amplifier Wiring Cable A2048202275

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1775401858

Mercedes W118 W177 W247 Starter Alternator Wiring Loom Harness Cable A1775401858

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2079012500

Air Module Mercedes C204 C207 Sensor Control Unit ECU A2079012500

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1331420500

Mercedes W176 C117 A45 CLA45 Engine Sound Generator Control Unit A1331420500

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2045401434

Mercedes W204 OM642 Alternator Starter Wiring Harness Cable A2045401434

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2205400507

Mercedes W220 Door Wiring Harness Rear Right Left N/O/S Keyless Go A2205400507

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2479007709

Front Camera Module Mercedes C118 W177 W247 Lane Assist Control Unit A2479007709

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055407067

Mercedes W205 Front Door Harness Wiring Loom Passenger Side A2055407167

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6549009400-3

Mercedes W907 315CDI OM654.920 Engine Unit Module ECU Kit A6549009400 BCM + Key

€474.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1725402209

Mercedes R172 Glove Box Wiring Loom A1725402209

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1330901500

Mercedes W176 A45 C117 CLA45 Engine Sound Generator Valve A1330901500

€142.95

Free delivery: Sep 22 – 24

If paid before 14:00

Part no. A1695450046

Mercedes-Benz A C W169 W204 Battery Relay Module Box A1695450046 A0035422619

€32.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. A1729002301

Mercedes SLK R172 Door Control Unit Module Front Left N/S A1729002301

€32.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. A2198203326

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1715409506

Mercedes R171 Window Control Switch Wiring Cable Driver Side A1715409506

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519000603-1

Mercedes W205 C205 BlueTec OM651.921 Engine Control Unit ECU Kit A6519000603 Key

€284.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2465406607

Positive Cable Mercedes W176 W246 Battery Lead Plus Pole Red A2465406607

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1729001506

Mercedes R172 Convertible Roof Control Module ECU A1729001506

€23.95

Free delivery: Sep 23 – 24

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: Sep 23 – 24

If paid before 14:00

Part no. A2218702286

Mercedes W221 Front Seat Heater Control Unit Module ECU A2218702286

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1695450140

Mercedes A B Class W169 W245 Holder Bracket Engine Control Unit A1695450140

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0005400502

Mercedes W212 W221 W447 W906 Adblue Injector Wiring Cable Loom A0005400502

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0038212751

Mercedes-Benz M S W221 ML W164 Airbag Impact Crash Sensor Door A0038212751

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2079001100

Door Module Mercedes C207 W207 Front Left N/S Control Unit ECU A2079001100

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1775400358

Mercedes W177 Ground Line Cable Wire A1775400358

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1695457740

Mercedes-Benz A B W169 W245 Bracket Starter Alternator Control Unit A1695457740

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2095453140

Fuse Box Holder Mercedes W209 Control Unit Mount Bracket CLK A2095453140

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1635407405

Mercedes ML W163 Front Electric Seat Adjust Wiring Harness Cable A1635407405

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0045467740

Mercedes W447 Drive Train Sensor Can Distributor A0045467740

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2515404206

Mercedes W251 Rear Bumper Parktronic Wiring Loom Parking Sensor A2515404206

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

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