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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Battery Bracket Mercedes Sprinter W906 W910 Mount Trim Holder A9065410400

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1569007702

Signal Actuation Module Mercedes W176 W246 SAM Control Unit ECU A1569007702

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469067100

Mercedes W176 W246 C117 Fuse Relay Box Control Unit Module A2469067100

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0035422319

Mercedes W176 W246 Relay Battery Decoupling 12V A0035422319

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045400708

Mercedes-Benz W204 Parking Sensor Wiring Cable Harness Rear PDC A2045400708

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139004119

Module Mercedes W205 Drivetrain Gearbox Control Module Unit A2139004119

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049005908-2

Mercedes W204 Navigation CD Player COMAND Radio Sat Nav Head Unit A2049005908

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0061510301

Mercedes W169 W245 Petrol Engine Starter Motor M266 A0061510301

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9068204126

Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9068204126

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465407832

Battery Cable Mercedes W176 W246 Positive Wiring Starter Harness A2465407832

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1728200815

Mercedes W204 C207 Centre Console Aux Port Socket Plug Terminal A1728200815

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465410005

Mercedes W176 W246 Battery Cover Fuse Box Trim Panel Lid A2465410005

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025450801

Fuse Holder Mercedes W169 W245 W906 Electrical Fuse Box Bracket A0025450801

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0325453132

Gearbox Module Mercedes SLK R171 Automatic Transmission Unit EGS A0325453132

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775404007

Fuse Box Mercedes W177 Power Distribution Junction Relay Unit A1775404007

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118703226

Mercedes W245 Bluetooth Control Unit Module Hands Free A2118703226

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129003704

Parking Module Mercedes W207 W212 PDC Distance Control Unit Sensor A2129003704

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1179001802

Mercedes W176 Air Module Belt Locking System Control Unit Module ECU

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2079013700

Mercedes-Benz E-Class W207 Windscreen Windshield Rain Sensor Control Unit

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2609060100

Mercedes C118 W177 W247 M260 Petrol Engine Starter Motor 12V A2609060100

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2035400031

Mercedes CLK W203 C209 Negative Battery Terminal Cable A2035400231

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009002308

Mercedes W447 W906 Adblue Module Exhaust Gas Control Unit ECU A0009002308

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009821212

Energy Distributor Mercedes W205 W212 W213 W906 Control Unit Module A0009821212

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059004113

Mercedes S205 Display Screen Multimedia Navigation Sat Head Unit A2059004113

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2035454701

Mercedes-Benz C CLC Class CL203 S203 W203 Fuse Box Module SAM Unit A2035454701

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059002211

Display Mercedes C205 Dashboard Central Multimedia Car System Screen A2059002211

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469050101

Mercedes W176 W246 Rear Boot Lid Tailgate Antenna Booster Amplifier

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9068200286

CD Radio Mercedes Vito W639 Sprinter W906 Audio Stereo Head Unit A9068200286

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4479000900

Mercedes Vito W447 Air Module Control Unit ECU 4479000900

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0018204535

Microphone Mercedes W639 W906 Hands-Free Interior Mic Unit A0018204535

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469004512

Mercedes-Benz A M Class W166 W176 Parking Brake Control Unit Module ECU

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009820412

Mercedes W176 W205 W212 Voltage Converter Power Distributor Plug A0009820412

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009055504-TNG1

Mercedes W166 C207 Front Rear PDC Parking Distance Sensor Tenorite Grey - 755

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695400209

Mercedes W169 W245 Diesel Engine Starter Wiring Loom Cable A1695400209

€23.95

Free delivery: Nov 12 – 13

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Part no. A2129003614

Fuse Box Mercedes W212 Rear Relay Control Unit Electric Module SAM A2129003614

€118.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2098202126

Mercedes C209 Door Control Module Front Left N/S A2098201926

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6397600604

Mercedes-Benz Vito W639 Front Left Door N/S Lock Bowden Pull Cable A6397600604

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2128204185

Mercedes W204 W212 Door Module Control Unit Module Rear Right O/S A2128204185

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715409245

Mercedes SLK R171 Gateway Control Unit Gateway Module ECU A1715409245

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9078200301

Mercedes W907 Radio Professional System Controller Head Unit A9078200301

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025428919

Relay Mercedes W176 W246 5-Pin Yellow Hella 12V A0025428919

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045452647

Mercedes W204 Aerial Antenna Control Unit Bracket Holder Mount A2045452647

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2189005607

Radio Head Unit Mercedes W207 W212 COMAND Navi CD Player Navigation A2189005607

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6549061600

Starter Motor Mercedes W205 W213 W238 W447 OM654 Engine Diesel A6549061600

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139008530

Mercedes W213 W447 Transmission Gearbox Control Unit Module ECU A2139008530

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229009211

Mercedes W207 A207 W212 Digital Satellite Radio Control Unit A2229009211

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0061516201

Starter Motor Mercedes Sprinter W204 W211 W212 OM646 Diesel Engine A0061516201

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1718204226

Mercedes R171 Convertible Roof Top Control Unit Module ECU A1718204226

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2079010100

Air Module Mercedes W207 C207 Coupe Control Unit ECU A2079010100 5WK43967

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048200189

Mercedes-Benz C E Class W204 W207 Aerial Antenna Amplifier Unit A2048200189

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465400335

Mercedes W176 W246 Negative Earth Cable Battery Terminal Wiring A2465400335

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1699000100

Mercedes-Benz A B W169 W245 Front Left Door N/S Control Unit Module A1699000100

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118701085

Mercedes R171 Navigation Processor Multimedia Control Module Unit A2118701085

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0325453832

Module Mercedes W639 Automatic Transmission Control Module Unit A0325453832

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4475401440

Mercedes Vito W447 Fuse Box Relay Control Unit Module A4475401440

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1769001101

Mercedes W176 W246 Comfort Module Central Gateway Control Unit VST A1769001101

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775404107-1

Fuse Box Mercedes C118 W177 W247 Battery Relay Terminal A1775404107

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1668203426

Mercedes W166 C292 Front Seat Adjuster Module Unit Left Right N/O/S A1668203426

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048210851

Mercedes W212 Windscreen Rain Sensor Temperature Humidity Unit A2048210851

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129006518

Door Module Mercedes W204 W207 W212 Front Right O/S Control Unit A2129006518

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6397602004

Bowden Cable Mercedes W639 Rear Right O/S Sliding Door Handle Catch A6397602004

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729008500-3

Mercedes W166 W204 Display Screen Information Navigation Dashboard A1729008500

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129004106

Door Module Mercedes W212 Rear Left N/S Control Unit A2129004106

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0035420219

Relay Mercedes W639 W906 5-Pin Black 12A A0035420219

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049001506

Mercedes W204 Coupe Door Module Front Right O/S Control Unit A2049001506

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698208326

Mercedes-Benz W169 W245 Door Module Front Left N/S Control Unit A1698208326

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2035407608

Mercedes-Benz C W203 Front Left Right Door Wiring Loom Harness A2035407608

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045402410

Mercedes W204 Door Wiring Front Left N/S Door Cable Harness A2045402410

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6397600704

Mercedes Vito W639 Front Left Door N/S Lock Bowden Pull Cable A6397600704

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229004320

Telematics Module Mercedes C238 Communication Blutooth Control A2229004320

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2046801231

Mercedes W204 Dashboard Navigation Central Display Screen Monitor A2046801231

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049006301

Mercedes W204 Rear SAM Module Fuse Box Control Unit A2049006301

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669004402

Door Module Mercedes W176 W246 Front Right O/S Control Unit Module A1669004402

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009051600

Mercedes W207 W212 W221 Front Windscreen Windshield Camera A0009051600

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0025467940

Receptacle Housing Mercedes W164 W203 W639 Dashboard Wiring Harness A0025467940

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059004721

Mercedes W205 Door Control Unit Module Rear Right O/S A2059004721

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009057908

Mercedes C238 Rear Bumper Blind Spot Radar Sensor Left Right N/O/S A0009057908

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059005122

Seat Module Mercedes W205 W253 Memory Control Unit Driver's Side A2059005122

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048700196

Radio Player Mercedes W204 COMAND Navi CD Head Unit A2048700196

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048702789

Aerial Antenna Amplifier Mercedes W204 Estate Left N/S Booster Unit A2048702789

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465402050

Mercedes W176 Fuse Box Control Unit SAM Module Relay A2465402050

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2035451303

Mercedes CL203 W203 Fuse Box Cover Engine Bay Relay A2035451303

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465400340

Mercedes W176 Fuse Relay Box Unit A2465400340 A2469067200

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009001808

Mercedes W205 Park Assist PDC Trunk Control Unit Module A0009001808

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009004613

EGR Module Mercedes W177 W205 Exhaust Gas Recirculation Unit ECU A0009004613

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129004114

Door Module Mercedes W204 W212 Rear Left N/S Control Unit A2129004114

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0055461240

Mercedes W169 W245 Distributor Box Front Control Unit Module A0055461240

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129001711

Mercedes W212 PDC Parking Distance Control Unit Module Sensor A2129001711

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0045468240

Distributor Box Mercedes W204 W212 W906 Front Block Control Unit A0045468240

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0018209126

Mercedes CLC CLK Class CL203 W203 C209 Crash Sensor A0018209126

€23.95

Free delivery: Nov 12 – 13

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Part no. A2059008118

Telematics Module Mercedes W176 W205 W218 Communication Control Unit A2059008118

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0055422618

Rate Sensor Mercedes W212 ESP Yaw Rotation Control Unit Module A0055422618

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9075402705

Mercedes W907 Front Axle Brake Wear Indicator Loom Wiring Harness A9075402705

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135406100

Fuse Box Mercedes W205 Interior Equipment Fuse Box Control Module A2135406100

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6229000500

Mercedes W447 OM622.951 Engine Control Unit Module ECU Kit A6229000500 Manual

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049060105-2

Mercedes W204 SAM Control Unit Module Fuse Box Relay Rear A2049060105

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695420018-HBL

Parking Sensor Mercedes W169 Front Bumper Distance Parktronic Horizon Blue 391

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229063701

Fuse Box Mercedes W205 W222 Electrical Relay Box Module Unit A2229063701

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2709002100-1

Mercedes W176 W246 A180 B180 BlueEFFICIENCY 270.910 122HP Engine ECU A2709002100

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

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