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-Benz A B Class W176 W246 Rear Fuel Pump Control Unit Bracket Holder

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055455440

Mercedes C205 Keyless Go Module Unit Bracket Mount Holder Support A2055455440

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2535409530

Mercedes X253 Hybrid Engine Wiring Harness Loom Cable A2535409530

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2045409813

Battery Cable Mercedes W204 W207 Positive Wiring Harness Loom A2045409813

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2056109701

Mercedes W205 Battery Holder Bracket Mount Strap Clamp A2056109701

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2118703385

Mercedes W211 Door Module Rear Left N/S Control Unit ECU A2118703385

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1635400341

Mercedes W163 Battery Cable Engine Block Ground Strap Wiring A1635400341

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. lhd-A2215403310

Mercedes W221 Battery Electrical Ground Line Wire Earth Cable A2215403310

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129063001

Mercedes C207 W212 Radio Head Unit Navi CD DVD Player Navigation A2129063001

€118.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059006213

Mercedes W205 Rear Door Module Control Unit ECU Left N/S A2059006213

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2048704426

Door Module Mercedes W204 S204 Front Right O/S Control Unit A2048704426

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009009639

Mercedes EQA350 H243 4matic DC Current Charge Connection Module OBL + BR293

€1,044.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1779008103

Mercedes W177 W247 Telematics Module Communication Control Unit A1779008103

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2189002002

Mercedes X218 CLS350 Automatic Trunk Lid Clossing Control Module A2189002002

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469009802

Mercedes W176 Radio Control Function Button Knob Controller Unit A2469009802

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1635401030

Mercedes W163 Positive Cable Alternator Battery Starter Wire Harness A1635401030

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2533402600

Mercedes X253 Hybrid GLC Battery Electrical Wiring Harness A2533402600

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0003427200

Mercedes EQA350 H243 4matic Electric Voltage Converter Module A0003427200

€408.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059004321

Mercedes W205 X253 Front Right O/S Door Control Unit Module A2059004321

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9069001004

Mercedes Sprinter W906 Digital Tachograph Tachometer Control Module A9069001004

€279.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059004021

Mercedes W205 GLC X253 Door Module Control Unit Front Left N/S A2059004021

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 0E02320113

Mercedes W205 Electrical Cable Wiring Loom Harness Cabling 0E02320113

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2829062000

Starter Motor Mercedes C118 W177 C247 Petrol OM282 Starter Motor A2829062000

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2044400605

Mercedes W204 Wiring Loom Cable Harness Door Front Left N/S A2044400605

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2045401710

Mercedes W204 Front Door Wiring Loom Harness Left N/S A2045401710

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1668201089

Mercedes W176 Radio Aerial Antenna Amplifier Booster Unit Module A1668201089

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0005406904

Mercedes X253 Ground Line Battery Earth Cable Wire A0005406904

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9060005999-1

Mercedes Sprinter W906 Front Door Wiring Harness Left Right N/O/S A9060005999

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2465451500

Mercedes W176 Control Unit Bracket Holder Mount A2465451500

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2045403910

Mercedes W204 Brake Pad Wear Indicator Sensor Rear Axle Left N/S A2045403910

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6421506891

Mercedes W251 R320 CDI OM642.950 224HP Engine Module ECU A6421506891 Automatic

€189.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1648207426

Mercedes ML W164 W251 Air Module SRS Control Unit ECU A1648207426

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2389058501

Antenna Mercedes A205 Convertible Telephone Antenna Module A2389058501

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519007103

Mercedes W907 314CDI OM651.958 Engine Control Unit ECU A6519007103 Automatic

€213.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2479004707

Mercedes W177 Dynamic Adaptive Suspension System Control Unit Module A2479004707

€99.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519004201-2

Mercedes GLE250 W166 OM651.960 204HP Engine ECU Kit Set A6519004201 Automatic

€284.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469003014

Mercedes W176 W231 W246 Electric Parking Brake Control Unit Module A2469003014

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055409414

Mercedes C253 S205 Front Door Wiring Loom Cable Harness Right O/S A2055409414

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 13720856

Mercedes W212 Negative Cable Battery Terminal Wiring 13720856

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2075400009

Mercedes C204 C207 Roof Headliner Wiring Loom Harness A2075400009

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6409004900-2

Mercedes W169 W245 180 CDI OM640.940 109HP Engine ECU Kit A6409004900 Automatic

€161.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129061903-2

Mercedes S212 Boot Tailgate Lamp Inner Left N/S Wire Harness Loom A2129061903

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2218708285

Mercedes W221 Head Unit DVD High Line Radio Player Navigation A2218708285

€560.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1648204426

Mercedes W251 Air Module Control Unit ECU A1648204426

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055401302

Mercedes C205 Positive Battery Wiring Loom Harnes Cable A2055401302

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0004461160

Mercedes Sprinter W906 FleetBoard Onboard Time Recorder Control Unit A0004461160

€113.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0005400764

Mercedes W205 Battery Negative Ground Bonding Line Wire Earth Cable A0005400764

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2215403110

Mercedes W221 Positive Battery Cable Wire A2215403110

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1729007500

Mercedes W204 Seat Module Memory Control Unit Front Left N/S A1729007500

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009068206

Alternator Generator Mercedes W177 W247 M260 Petrol Engine 200A 14V A0009068206

€332.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1725404009

Mercedes R172 Wiring Cable Harness Front Driver's Door Wiring Loom A1725404009

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1669007809

Mercedes GLE W166 Rear Door Wiring Control Module Left N/S Unit ECU A1669007809

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1728208710

Mercedes W176 W246 Roof Towing Alarm Sensor Switch Module A1728208710

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129062003-2

Mercedes S212 Rear Tailgate Trunk Inner Lamp Cable Wire Right O/S A2129062003

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2789060600

Mercedes W166 R172 W205 C207 W212 C216 Engine Starter Motor 12V A2789060600

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6401501691

Mercedes W245 OM640.940 109HP Engine Control ECU A6401501691 Automatic

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129017902

Mercedes W212 CLS C218 Air Module Control Unit Controller ECU A2129017902

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1765406708

Mercedes W176 Door Harness Loom Cable Wiring Rear Left Right N/O/S A1765406708

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1725404809

Mercedes R172 Wiring Cable Harness Front Passenger Door Wiring Loom A1725404809

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1648201826

Mercedes W251 Parking Distance Control Module ECU PDC A1648201826

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055407311

Mercedes C205 C63 AMG Fuse Box Housing Cover A2055407311

€127.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1649100075

Mercedes ML W164 Lumbar Module Front Seat Lumbar Control Unit A1649100075

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0025427219

Mercedes W169 W245 W204 W212 Relay 4-Pin Black Hella A0025427219

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1729058300-1

Mercedes SLK R172 Pedestrian Protection Impact Crash Sensor Module A1729058300

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2045403710

Mercedes W204 ABS Sensor Wiring Harness Front Left N/S A2045403710

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009052802

Mercedes W212 Negative Battery Terminal Cable Wire A0009052802

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. a0045468040

Mercedes W204 W212 W221 Power Distributor Box Conectors Socket A0045468040

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2139008330

Mercedes W177 W213 W247 Automatic Gearbox Control Unit Module ECU A2139008330

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1693000204-2

Accelerator Sensor Mercedes W169 W245 YAW Rate Control Unit Module A1693000204

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009004839

Mercedes C118 W177 C247 Battery Control Module Unit ECU A0009004839

€284.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469007314-2

Mercedes C117 W246 Central Display Screen Multimedia Sat Nav Unit A2469007314

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2709002100-8

Mercedes C117 CLA45 AMG 4Matic M133.980 Engine Control ECU Kit A2709002100 Key

€493.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2519061100

Mercedes W251 Central Multimedia Navi GPS Control Head Unit ECU A2519061100

€313.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1698702710

Mercedes-Benz A B Class W169 W245 Tow Protection ECO Switch Button Unit Module

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2048205015

Mercedes W204 W207 Wiring Loom Cable Harness AUX Jack A2048205015

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1695403605

Mercedes A-Class W169 B-Class W245 Door Wiring Loom Front Right O/S A1695403605

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2105450403

Cable Connector Mercedes W204 W210 W212 W639 Plug Wiring Loom Cap A2105450403

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1668200689

Antenna Amplifier Mercedes W176 Aerial Module Unit Rear A1668200689

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2468201915

AUX Jack Port Mercedes C117 W246 W176 Wiring Loom Cable Harness A2468201915

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2128201689

Mercedes W212 Antenna Amplifier Aerial Module Unit A2128201689

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2319054300

Mercedes R172 C207 W212 C218 Ignition Remote Key Fob A2319054300

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0325453232

Gearbox Module Mercedes S203 W203 C200 Automatic Control Unit ECU A0325453232

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1664407807

Mercedes ML W166 Seat Backrest Wiring Harness Front Left Right N/O/S A1664407807

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6394409909

Wiring Loom Mercedes W639 Vito Cable Sliding Door Rear Left N/S A6394409909

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2048702426

Mercedes W204 Door Module Rear Left N/S Control Unit Module A2048702426

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519003701-1

Mercedes W212 OM651.924 E220CDI 170HP Engine ECU Kit + Key + Lock A6519003701

€194.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009063805

Mercedes W205 W222 Three Phase Alternator Generator 14V 250A A0009063805

€137.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1715400506

Mercedes SLK R171 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1715400506

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009060922

Alternator Mercedes W212 W447 X253 C238 Petrol M274 150A Bosch A0009060922

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2139003317A

Mercedes C118 V177 W213 Diesel OM654 Automatic Transmission Module A2139003317

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2049007111

Mercedes W204 Navigation CD Player Radio Stereo Sat Nav Head Unit A2049007111

€108.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129008818

Keyless Go Module Mercedes W207 W212 W218 ECU Door Lock Control Unit A2129008818

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A4475400600

Mercedes Vito W447 Battery Cable Alternator Wiring Diesel OM651 A4475400600

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6079001800-1

Mercedes W176 A180 CDI OM607.951 109HP Engine ECU Kit A6079001800 Automatic

€398.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1698203285

Mercedes A B Class W169 W245 Door Control Module Right Rear O/S A1698203285

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055402594

Mercedes W205 Hybrid Power Electronic Drive Control Unit Wiring A2055402594

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2475407800

Mercedes W177 Fuse Box Relay Cover Lid Control Unit Bracket Trim A2475407800

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1698209126

Door Module Mercedes W169 W245 Rear Left N/S Control Unit A1698209126

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2229050606

Mercedes W205 W212 S212 C217 Tailgate Boot Lid Control Module Unit A2229050606

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

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