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 EQA350 H243 4matic Electric Voltage Converter Module A0003427200

€408.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059004321

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059004021

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0E02320113

Mercedes W205 Electrical Cable Wiring Loom Harness Cabling 0E02320113

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2829062000

Starter Motor Mercedes C118 W177 C247 Petrol OM282 Starter Motor A2829062000

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229002711

Mercedes W205 C253 X253 Front Camera Control Module Unit A2229002711

€184.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2044400605

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045401710

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1668201089

Mercedes W176 Radio Aerial Antenna Amplifier Booster Unit Module A1668201089

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005406904

Mercedes X253 Ground Line Battery Earth Cable Wire A0005406904

€23.95

Free delivery: Nov 12 – 13

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Part no. A2129014606-1

Mercedes W212 Display Screen Information Navigation Dashboard A2129014606

€75.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2465451500

Mercedes W176 Control Unit Bracket Holder Mount A2465451500

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A6421506891

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

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1648207426

Mercedes ML W164 W251 Air Module SRS Control Unit ECU A1648207426

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2389058501

Antenna Mercedes A205 Convertible Telephone Antenna Module A2389058501

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519007103

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

€213.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479004707

Mercedes W177 Dynamic Adaptive Suspension System Control Unit Module A2479004707

€99.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2749000800

Mercedes W205 C350e M274.920 279HP Engine ECU Kit A2749000800 Automatic

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469003014

Mercedes W176 W231 W246 Electric Parking Brake Control Unit Module A2469003014

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 13720856

Mercedes W212 Negative Cable Battery Terminal Wiring 13720856

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075400009

Mercedes C204 C207 Roof Headliner Wiring Loom Harness A2075400009

€32.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2218708285

Mercedes W221 Head Unit DVD High Line Radio Player Navigation A2218708285

€560.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2731535279-1

Mercedes X164 Engine Control Unit 5.5 Petrol 387HP Automatic A2731535279 Kit Set

€1,187.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1648204426

Mercedes W251 Air Module Control Unit ECU A1648204426

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401302

Mercedes C205 Positive Battery Wiring Loom Harnes Cable A2055401302

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0004461160

Mercedes Sprinter W906 FleetBoard Onboard Time Recorder Control Unit A0004461160

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005400764

Mercedes W205 Battery Negative Ground Bonding Line Wire Earth Cable A0005400764

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2215403110

Mercedes W221 Positive Battery Cable Wire A2215403110

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729007500

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

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1725404009

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A1728208710

Mercedes W176 W246 Roof Towing Alarm Sensor Switch Module A1728208710

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2789060600

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

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129017902

Mercedes W212 CLS C218 Air Module Control Unit Controller ECU A2129017902

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A1648201826

Mercedes W251 Parking Distance Control Module ECU PDC A1648201826

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055407311

Mercedes C205 C63 AMG Fuse Box Housing Cover A2055407311

€127.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1649100075

Mercedes ML W164 Lumbar Module Front Seat Lumbar Control Unit A1649100075

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025427219

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729058300-1

Mercedes SLK R172 Pedestrian Protection Impact Crash Sensor Module A1729058300

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045403710

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009052802

Mercedes W212 Negative Battery Terminal Cable Wire A0009052802

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. a0045468040

Mercedes W204 W212 W221 Power Distributor Box Conectors Socket A0045468040

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139008330

Mercedes W177 W213 W247 Automatic Gearbox Control Unit Module ECU A2139008330

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1693000204-2

Accelerator Sensor Mercedes W169 W245 YAW Rate Control Unit Module A1693000204

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009004839

Mercedes C118 W177 C247 Battery Control Module Unit ECU A0009004839

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469007314-2

Mercedes C117 W246 Central Display Screen Multimedia Sat Nav Unit A2469007314

€61.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2519061100

Mercedes W251 Central Multimedia Navi GPS Control Head Unit ECU A2519061100

€313.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2048205015

Mercedes W204 W207 Wiring Loom Cable Harness AUX Jack A2048205015

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2105450403

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1668200689

Antenna Amplifier Mercedes W176 Aerial Module Unit Rear A1668200689

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2468201915

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2128201689

Mercedes W212 Antenna Amplifier Aerial Module Unit A2128201689

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2319054300

Mercedes R172 C207 W212 C218 Ignition Remote Key Fob A2319054300

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0325453232

Gearbox Module Mercedes S203 W203 C200 Automatic Control Unit ECU A0325453232

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2048702426

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

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A0009063805

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

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715400506

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

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009060922

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

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139003317A

Mercedes C118 V177 W213 Diesel OM654 Automatic Transmission Module A2139003317

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049007111

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

€108.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2055402594

Mercedes W205 Hybrid Power Electronic Drive Control Unit Wiring A2055402594

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2475407800

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

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229050606

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4475400010

Mercedes Vito W447 Battery Cable Alternator Wiring Diesel OM651 A4475400010

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1765401409

Mercedes W176 Roof Wiring Harness Cable Loom A1765401409

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9425426040

Mercedes Sprinter W906 Fuse Box Relay Carrier Holder Bracket A9425426040

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0061517201

Motor Engine Starter Mercedes R172 W204 C207 W212 M271 Petrol A0061517201

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6395402733

Mercedes Vito Viano W639 Electric Wiring Cable Loom Harness A6395402733

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009003606

Mercedes W176 W246 Automatic Transmission Control Uni A0009003606

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139068801-1

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Unit A2139068801

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1175406303

Mercedes C117 Door Wiring Harness Cable Front Passenger's Side N/S A1175406303

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1664406610

Mercedes ML W166 Seat Wiring Harness Front Left Right N/O/S A1664406610

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479002707

Communication Module Mercedes W177 W247 Hermes LTE Control Unit A2479002707

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059001527

Mercedes C205 Gearbox Control Module Unit ECU A2059001527

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129009522

Mercedes W212 Fuse Box Relay Rear SAM Control Unit Module A2129009522

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2038204764-1

Mercedes CL203 Rear Tail Light Lamp Wiring Cable Loom Left N/S A2038204764

€23.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. A2035450301

Mercedes-Benz C CLK Class W203 W209 Battery Terminal Fuse Box A2035450301

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698704989

Mercedes W169 W245 GPS Navigation Radio Multimedia Player Head Unit A1698704989

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059004521

Door Module Mercedes W205 GLC C253 Rear Left N/S Control Unit ECU A2059004521

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0024463140-4

Mercedes W169 A160 CDI 95HP M266.920 Engine ECU Kit A0024463140 Automatic

€222.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2115453632

Mercedes S211 W211 C219 Body Control Module ECU Passenger Side A2115453632

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055403706

Mercedes W205 Front Axle Damper Adjustment Left N/S Wiring Harness A2055403706

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775402811

Mercedes W177 W243 W247 Rear Door Wiring Harness Cable Left N/S A1775402811

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729000608

Mercedes W212 W176 W246 W242 Media Interface Control Module Unit A1729000608

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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