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-Class W168 Intake Temperature Sensor A1688300072

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2205404508

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005401869

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

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009005415

Mercedes C238 C253 X253 Air Conditioning Module A/C Control Unit ECU A0009005415

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669001814

Mercedes W166 SAM Body Control Unit Module Fuse Box A1669001814

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1725408605

Mercedes SLK R172 Sun Visor Wiring Harness Cable Loom A1725408605

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2215407710

Mercedes W221 Battery Negative Terminal Cable Wiring Wire A2215407710

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1694710141

Mercedes W169 W245 Fuel Pump Cable Harness Bracket Mount Trim A1694710141

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2205401224

Mercedes CL S Class C215 W220 Fuse Box Unit Front Left ECU A2205401224

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1455452828

Mercedes Cla Sport 2.1 Diesel Engine Wiring Loom Harness Starter Lead 0455452828

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059001028

Door Module Mercedes GLC X253 Rear Door Right Control Module A2059001028

€42.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2055402224

Mercedes S205 X253 Center Console Wiring Loom Electrical Harness A2055402224

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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Part no. A2044400638

Mercedes C204 Wiring Cable Harness Front Passenger Door Wiring Loom A2044400638

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2059000828

Door Module Mercedes GLC X253 Rear Door Left Control Module A2059000828

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645400624

Mercedes W164 Fuse Box Relay Housing Cover A1645400624

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2044400538

Mercedes C204 Wiring Cable Harness Front Driver Door Wiring Loom A2044400538

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1679006912

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

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729006008

Mercedes W204 W212 W176 Media Interface Control Unit Module A1729006008

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9065400041

Mercedes Sprinter W906 Battery Cable Negative Lead Wiring Harness A9065400041

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A0025427619

Mercedes-Benz SLS ML G C197 W164 W463 Relay Fuse 5-Pin Green Hella A0025427619

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401724

Mercedes W205 GLC X253 Centre Console Wiring Harness Cable Loom A2055401724

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005465402

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2709060026-1

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A7899061200

Mercedes C205 Control Unit Module A7899061200

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1718200015

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006318

PDC Module Mercedes W205 W213 W247 Parking Assistant Parktronic Unit A0009006318

€99.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048202275

Mercedes W204 W212 C218 Bluetooth Antenna Amplifier Wiring Cable A2048202275

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775401858

Mercedes W118 W177 W247 Starter Alternator Wiring Loom Harness Cable A1775401858

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2079012500

Air Module Mercedes C204 C207 Sensor Control Unit ECU A2079012500

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1331420500

Mercedes W176 C117 A45 CLA45 Engine Sound Generator Control Unit A1331420500

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045401434

Mercedes W204 OM642 Alternator Starter Wiring Harness Cable A2045401434

€42.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2479007709

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

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055407067

Mercedes W205 Front Door Harness Wiring Loom Passenger Side A2055407167

€37.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A1725402209

Mercedes R172 Glove Box Wiring Loom A1725402209

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1330901500

Mercedes W176 A45 C117 CLA45 Engine Sound Generator Valve A1330901500

€142.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. A1695450046

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

€32.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A1729002301

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2198203326

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715409506

Mercedes R171 Window Control Switch Wiring Cable Driver Side A1715409506

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2465406607

Positive Cable Mercedes W176 W246 Battery Lead Plus Pole Red A2465406607

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729001506

Mercedes R172 Convertible Roof Control Module ECU A1729001506

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2218702286

Mercedes W221 Front Seat Heater Control Unit Module ECU A2218702286

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695450140

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005400502

Mercedes W212 W221 W447 W906 Adblue Injector Wiring Cable Loom A0005400502

€32.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A6519007401-14

Mercedes W204 220CDI OM651 Diesel 170HP Engine Module ECU A6519007401 Manual

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775400358

Mercedes W177 Ground Line Cable Wire A1775400358

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695457740

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2095453140

Fuse Box Holder Mercedes W209 Control Unit Mount Bracket CLK A2095453140

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635407405

Mercedes ML W163 Front Electric Seat Adjust Wiring Harness Cable A1635407405

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0045467740

Mercedes W447 Drive Train Sensor Can Distributor A0045467740

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2515404206

Mercedes W251 Rear Bumper Parktronic Wiring Loom Parking Sensor A2515404206

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6399000800-1

Mercedes Vito W639 Fuse Box Relay Control Unit Front SAM Module A6399000800

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025428419

Relay Mercedes W176 W246 4-Pin Black Hella 12V A0025428419

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9069059700

Mercedes Sprinter W906 Loading Compartment Ultrasonic Sensor Grey A9069059700

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048205189

Mercedes-Benz C-Class W204 Aerial Antenna Amplifier Unit A2048205189

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479002613

Mercedes CLA C118 W177 W205 W213 Telematics Control Unit Module A2479002613

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055450901-1

Mercedes C205 Cable Contact Guide Battery Clamp Unit A2055450901

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401492

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

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1179001602

Mercedes C117 Engine Noise Control Unit Module 651930 ECU 2.1 Diesel A1179001602

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465402605

Mercedes-Benz A B W176 W246 Engine Temperature Sensor Wiring Cable Harness

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0061514501-2

Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6421500326

Mercedes W204 OM642 224HP Engine Control ECU A6421500326 Automatic

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1725401209

Mercedes R172 Teleaid Monitoring Sensors Wiring Harness Cable Loom A1725401209

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465408111

Mercedes W246 Door Wiring Loom Cable Front Right A2465408111

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0061510301-2

Mercedes W169 W245 Petrol Engine Starter Motor A0061510301

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4144460116

Mercedes W414 Central Locking Lock Alarm Control Module ECU A4144460116

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055404767

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

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2125400072

Mercedes W212 Fuse Box Housing Relay Unit Module A2125400072

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118705526

Mercedes W219 Motorola Telephone Control Module DC UHI MOST A2118705526

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139004009

Mercedes W213 Door Module Front Left N/S Control Unit A2139004009

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055400292

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

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055404642

Mercedes W205 GLC C253 X253 Door Card Wiring Harness Driver's Side A2055404642

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218208202

Mercedes W221 Front Centre Dashboard Tweeter Speaker A2218208202

€33.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6395400044

Mercedes Vito W639 Anti Theft Alarm Switch Loom Cable A6395400044

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6549009600-3

Mercedes GLC 220d X253 654.920 194HP 4Matic Engine Control Unit A6549009600

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 21014375-1

Mercedes W204 Heater Matrix Booster Wiring Loom Cable 2.1 Diesel 21014375

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135409616

Mercedes Sprinter W910 Battery Sensor Negative Terminal Cable Wiring A2135409616

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129001806-1

Mercedes A207 C207 SAM Control Unit Module Controller Rear A2129001806

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1725404105

Mercedes R172 Rain Sensor Wiring Harness Cable Loom A1725404105

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469008113

Mercedes GLE X156 4Matic Transfer Control Unit Module ECU A2469008113

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669001709

Mercedes ML W166 SRS System Air Module Control Unit ECU A1669001709

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0015455116

Mercedes-Benz Vito Automatic Gearbox Control Unit ECU TCU A0015455116

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218207389

Mercedes W221 Seat Headrest Display Monitor Rear Entertainment Unit A2218207389

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775406401

Mercedes W177 Door Wiring Loom Harness Cable Front Right O/S A1775406401

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2515401830

Mercedes W251 Starter Motor Alternator Wiring Harness Cable Loom A2515401830

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2661538979-2

Mercedes W169 B150 M266.920 95HP Engine Control ECU A2661538979 Manual

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

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