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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Alternator Generator Mercedes W176 W246 Diesel Engine Bosch 175A A0009063822

€94.95

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Part no. A1698207226

Door Module Mercedes W169 W245 Front Right O/S Control Unit A1698207226

€23.95

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Part no. A2044400738

Mercedes C204 Electric Wire Harness Loom Cable Connector A2044400738

€23.95

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Part no. A2139005613

Mercedes W213 Front Door Module Right O/S Control Unit A2139005613

€23.95

Free delivery: Sep 23 – 24

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Part no. A1179061800-1

Mercedes CLA C117 Rear Tail Light Lamp Wiring Harness Right O/S A1179061700

€23.95

Free delivery: Sep 23 – 24

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Part no. A1775404307-1

Fuse Box Mercedes C118 W177 Engine Compartment Relay Box Module A1775404307

€113.95

Free delivery: Sep 23 – 24

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Part no. A6395450203

Mercedes-Benz Vito W639 Fuse Box Cover Cap Trim A6395450203

€23.95

Free delivery: Sep 23 – 24

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Part no. A2469009312-2

Mercedes X156 W176 W242 Radio Head Player Navigation Hazard Switch A2469009312

€170.95

Free delivery: Sep 23 – 24

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Part no. A2055403103

Alternator Starter Wiring Harness Mercedes W205 GLC C253 OM651 A2055403103

€28.95

Free delivery: Sep 23 – 24

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Part no. A2214408109

Mercedes W221 Door Wiring Cable Harness Loom Rear Left N/S A2214408109

€37.95

Free delivery: Sep 23 – 24

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Part no. A2208200764-2

Mercedes W220 Rear Tail Light Lamp Side Wiring Plug Harness Left N/S A2208200764

€56.95

Free delivery: Sep 23 – 24

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Part no. A1669009513

Mercedes W176 W204 DAB Radio Receiver Control Unit Module ECU A1669009513

€94.95

Free delivery: Sep 23 – 24

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Part no. A1725401909

Mercedes R172 Front Seat Air Module Wiring Harness Loom Left N/S A1725401909

€28.95

Free delivery: Sep 23 – 24

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Part no. A2465451440

Mercedes W176 Fuse Relay Box Cover Cap Top Trim Lid A2465451440

€23.95

Free delivery: Sep 23 – 24

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Part no. A2218705687

Mercedes W221 Linguatronic Control Module Unit ECU English Version A2218705687

€85.95

Free delivery: Sep 23 – 24

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Part no. A2465401350-1

Mercedes W156 W176 W246 Fuse Box Front Relay Control Unit Module A2465401350

€32.95

Free delivery: Sep 23 – 24

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Part no. A2055408117

Mercedes W205 W213 X253 Electrical Wiring Harness Cable A2055408117

€23.95

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Part no. A4145400130

Mercedes-Benz Vaneo W414 Cable Starter Line Positive Line Battery A4145400130

€23.95

Free delivery: Sep 23 – 24

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Part no. A2128208726

Mercedes W212 Door Module Rear Left N/S Control Unit ECU A2128208726

€23.95

Free delivery: Sep 23 – 24

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Part no. A2075400713

Mercedes A207 Convertible Front Seat Wiring Harness Cable Left N/S A2075400713

€113.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055408104

Battery Cable Mercedes W205 X253 Diesel OM651 Alternator Wiring A2055408104

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9075407312

Mercedes W907 Battery Fuse Box Positive Distribution Terminal A2479061803

€56.95

Free delivery: Sep 23 – 24

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Part no. A2215408707

Mercedes W221 Rear Door Wiring Loom Harness Cable Connector Left N/S A2215408707

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1645400801

Mercedes X164 SAM Control Unit Signal Actuation Acquisition Module A1645400801

€284.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519007500-19

Mercedes W204 C250 CDI 651.911 136HP Engine Unit ECU Kit A6519007500 Manual

€218.95

Free delivery: Sep 23 – 24

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Part no. A1765405109

Mercedes C117 X156 W176 M133 AMG Cruise Control Radar Adapter Wiring A1765405109

€37.95

Free delivery: Sep 23 – 24

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Part no. A1695453740

Mercedes-Benz A-Class W169 Fuse Box Unit Holder Bracket Frame A1695453740

€23.95

Free delivery: Sep 23 – 24

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Part no. A1729062000-2

Mercedes SLK R172 Rear Tail Light Lamp Wiring Harness Cable Left N/S A1729062000

€23.95

Free delivery: Sep 23 – 24

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Part no. A2059068501

Mercedes W205 Fuse Box Rear Relay Electrical Control Unit Box A2059068501

€23.95

Free delivery: Sep 23 – 24

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Part no. A2055402645

Mercedes W205 Rear Bumper Parking Sensor Wiring Loom Harness A2055402645

€56.95

Free delivery: Sep 23 – 24

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Part no. A2055457540

Mercedes W205 C238 X253 W213 Inner Firewall Contact Support A2055457540

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9079051602

Mercedes W907 Aerial Antenna Amplifier Control Unit Module A9079051602

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1729062100-2

Mercedes R172 Rear Tail Light Lamp Wiring Harness Cable Right O/S A1729062100

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2465410905

Mercedes W176 W246 C117 X156 Battery Fuse Relay Box Top Cover Trim A2465410905

€37.95

Free delivery: Sep 23 – 24

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Part no. A2075844181

Mercedes C207 Fuse Box Grouping Fuse Placement Map Card Diagram A2075844181

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2118202442

Mercedes E-Class W211 S211 Rear Right Door Window Lifter Motor Regulator

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055407790

Mercedes W205 Battery Electric Wiring Harness A2055407790

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1775409357

Mercedes W177 M282 Starter Alternator Electrical Wiring Harness A1775409357

€28.95

Free delivery: Sep 23 – 24

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Part no. A2469008213

Mercedes C117 W176 W246 Sound Audio Amplifier Harman Becker A2469008213

€427.95

Free delivery: Sep 23 – 24

If paid before 14:00

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Mercedes W204 W212 W221 Battery Relay Module Unit A0009822023

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Yaw Rate Sensor Mercedes W169 W245 W211 W219 Turn Rate Sensor A2165420018

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Mercedes W204 OM651 14V 150A Alternator Generator Engine Start/Stop A0009060401

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Mercedes W639 W906 Air Module SRS Control Unit ECU A9069005701

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Mercedes W906 Fuse Box Relay Control Unit Electric Module SAM A9069003502

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Control Panel Mercedes W212 Comand Navi CD Switch Push-Button A2128702751

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Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Unit A2139068801

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Mercedes ML W164 Window Windscreen Rain Light Sensor A1648203085

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Adblue Module Mercedes W205 W213 W177 W907 SCR Control Unit EGR ECU A0009007604

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Gateway Control Unit Mercedes W204 W212 Gateway Module ECU VST A2129001227

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Mercedes W164 W204 W211 OM642 Diesel Alternator Generator A6421540402

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Engine Wiring Mercedes W906 OM651.955 Euro 5 Cable Loom Harness A6511505520

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