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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Crash Sensor Mercedes ML W164 W221 Front Rear Impact Airbag Unit A0038208426

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2139068701-2

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Control Unit A2139068701

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2045401307

Mercedes W204 Centre Console Lightning Dashboard Cable Wiring A2045401307

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1665401913

Mercedes W166 GLE Heater Booster PTC Wiring Harness Loom Cable A1665401913

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1639800164

Mercedes W163 Rear Bench Backrest Gas Strut Right O/S Side A1639800164

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0035420219-3

Mercedes W639 W906 Relay 5-Pin Control Unit 12A Blue A0035420219

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2135400200

Mercedes W205 W213 W238 Fuse Box Cover Control Unit Holder Bracket A2135400200

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469000717

Mercedes C117 X156 All Wheel Drive Control Unit Module ECU MFA A2469000717

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2044401402

Mercedes W204 Parktronic Parking Distance Control Module Unit ECU A2044401402

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2129006417-2

Mercedes W207 W212 Radio Head Unit CD Player Control Panel Switch A2129006417

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2028281114

Mercedes-Benz C CLK W202 W208 Alarm Control Module Bracket Holder A2028281114

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2044400235

Mercedes C204 Front Bumper Wiring Harness Loom Cable A2044400235

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2208203085

Mercedes C199 C215 W220 Air Module ECU Control Unit S430 113941 A2208203085

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2139001909

Mercedes W213 Ambient Lighting Control Unit Module ECU A2139001909

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009002501

Mercedes C204 Video Radar Sensor Control Module Unit ECU A0009002501

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009004836

Mercedes W177 W247 Driving Dynamics Module Control Unit ECU A0009004836

€142.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0015426519

Mercedes C140 Brake Pump Relay Electrical Fuse Module Control Unit A0015426519

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009007607

Mercedes-Benz E-Class W207 W212 Front Windscreen Windshield Lane Assist Camera

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2479004505-1

Mercedes Vito W447 Sprinter W907 W910 Telematics Module Control Unit A2479004505

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2661538979-1

Mercedes W169 A150 W245 B150 Engine Control ECU Kit A2661538979 + Key Automatic

€265.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2059003913

Mercedes W205 Relay Module Body Control Module Unit SAM BCM A2059003913

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1698208689

Mercedes W169 W245 Amplifier Antenna Sensor Control Unit Module A1698208689

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2465402610

Mercedes-Benz A B W176 W246 160 180 CDI Alternator Cable Loom Wire A2465402610

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2048709289

Mercedes W204 Right O/S Antenna Amplifier Filter Module A2048709289

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0005406050

Mercedes ML W164 W169 W205 W212 Fuse Box Relay Control Unit Module A0005406050

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1665400841

Ground Line Mercedes ML W166 Battery Earth Negative Cable Wire A1665400841

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1679009330

Mercedes C118 W167 W177 W243 W247 Ignition Control Module Unit ECU A1679009330

€284.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1715405045

Mercedes SLK R171 Central Gateway Module ECU Control Unit A1715405045

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2139065706

Mercedes W205 W213 Front Engine Compatment Fuse Relay Box Module A2139065706

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0018275101

Mercedes W164 Tyre Pressure Sensor Rear Right Left Antenna Module A0018275101

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469008813

Module Mercedes W176 A45 AMG M133 4matic All Wheel Drive Control A2469008813

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9075406849

Mercedes Sprinter W907 Ground Line Battery Earth Cable Wire A9075406849

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2115450301-1

Mercedes S211 W211 W219 Fuse Distribution Box Unit A2115453901

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2118206185

Mercedes E S Class W211 W220 Telephone Hands Free Control Module A2118206185

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2044405835

Mercedes S204 Front Door Wiring Loom Harness Cable Driver Side A2044405835

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A4479001118

Mercedes W447 Front Air Module Control Unit ECU A4479001118

€488.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2055400010

Mercedes W205 Door Wiring Harness Loom Cable Front Passenger Side A2055400010

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2056186000

Mercedes W205 W238 Rear Battery Holder Bracket Mount Strap Clamp A2056186000

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2125458040

Bracket Holder Mercedes W204 W212 W222 Auxiliary Generator Battery A2125458040

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2045402210

Mercedes W204 Front Door Electrical Cable Wiring Loom A2045402210

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1645400641

Mercedes-Benz M-Class W164 Battery Ground Earth Strap Cable Wiring A1645400641

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2479007312

Mercedes W212 Suspension Module Adjustment Control Unit Controller A2479007312

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2208200175

Mercedes W220 Front Door Keyless Entry Antenna Left N/S Side A2208200275

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2055401410

Mercedes S205 C253 Rear Door Harness Wiring Cable Left Right N/O/S A2055401410

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009951033

Mercedes W204 Exhaust Pipe Connector Clamp Holder M274 Petrol A0009951033

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2025402373-2

Mercedes W169 W203 W211 2 OBD Diagnostic Plug Cover A2025402373

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2479009312

Mercedes W910 Telematics Module Communication Blutooth Control A2479009312

€80.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2124405433

Mercedes W212 Wiring Harness Right Front Door Control Unit Right O/S A2124405433

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2195406207

PDC Wiring Mercedes W211 W219 Front Bumper Parking Sensor Loom Cable A2195406207

€75.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2079053300

Mercedes-Benz W207 Cabrio A207 Rear Left N/S Radio Aerial Antenna Amplifier

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2098200326

Mercedes C209 Body Control Module Unit Temic 376 800 GZ A2098200326

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2513200158-1

Valve Block Mercedes W251 W906 Air Suspension Control Unit Module A2513200158

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2059007147-1

Mercedes W205 C200 264.915 198HP Engine Control ECU Kit A2649000700 Automatic

€560.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2049013502

Mercedes W204 S204 Air Module SRS Control Unit ECU A2049013502

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1645400074

Mercedes W164 W251 Front Seat Wiring Loom Harness Left N/S A1645400074

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9065410040

Mercedes Sprinter W906 Battery Bracket Mount Carrier Support A9065410040

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9078209400

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit A9078209400

€104.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2218203375

Mercedes W221 Bluetooth Antenna AMP Amplifier Module A2218203375

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009002201

Mercedes R172 W204 W212 C218 Fuel Pump Module Control Unit A0009002201

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2205404408

Mercedes W220 Door Exit Wiring Loom Cable Connector Left Right N/O/S A2205404408

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2128270228-SEL

Mercedes W212 Roof Antenna Amplifier Shark Selenite Grey - 992 A2128270228

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1698204726

Mercedes-Benz A-Class W169 Rear Left Door N/S Control Unit Module A1698204726

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469017000

Mercedes W176 Windscreen Rain Sensor Unit Module A2469017000

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2125455640

Mercedes W212 Battery Holder Mount Bracket Support E-Class A2125455640

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1715405045-1

Mercedes SLK R171 Central Gateway Module ECU Control Unit A1715405045

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2711504733

Mercedes W204 Injection Electrical Wiring M271 Petrol Engine Cable A2711504733

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1765450000

Mercedes-Benz A-Class W176 Bluetooth Unit Module Bracket Holder A1765450000

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0045468440

Mercedes W177 Power Distributor Connector Plug Unit A0045468440

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0045428718-BEB

Mercedes R171 W203 Parking Distance Sensor PDC Benitoite Blue - 950 A0045428718

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2125403005

Mercedes W212 M271 Wiring Battery Alternator Starter Harness Cable A2125403005

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6429002900-11

Mercedes W164 ML300 OM642.820 204HP Engine Control ECU Kit A6429002900 Automatic

€332.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2048708026

Mercedes W204 Media Interface Control Unit Module ECU A2048708026

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2128208826

Mercedes W212 Door Control Module Unit ECU Rear Right O/S A2128208826

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2048700594-1

Mercedes W204 Radio Player COMAND Navi CD Head Unit A2048700594

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2465401950

Battery Base Mercedes C117 W176 W246 Power Fuse Relay Box A2465401950

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2389055000

Mercedes W205 Antenna Aerial Amplifier Duplexer Module Receiver Unit A2389055000

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2055402850

C205 Fuse Box Mercedes C205 Electrical Interior Relay Fuse Socket Control A2055402850

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2429004801

Mercedes W176 W204 W212 Telematics Communication Control Unit Module A2429004801

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6081550035

Mercedes W177 Alternator Mounting Bracket Carrier A6081550035

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1665402709

Mercedes W166 Automatic Gearbox Wiring Loom Harness Cable A1665402709

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2218706887

Mercedes W221 Head Unit Multimedia TV Player CD Changer Inverter A1679001014

€569.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 127073X

Mercedes W176 Electrical Wiring Loom Harness Cable 127073X

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9065451640

Mercedes-Benz Sprinter W906 Fuse Box Unit Holder Bracket Frame A9065451640

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2118201626

Mercedes S211 W211 Rear Door Control Unit Right O/S A2118201626

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1331510745

Mercedes C117 CLA 45 AMG Heat Shield Alternator Plate Petrol M133 A1331510745

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2035405707

Mercedes-Benz CL203 Front Left Right Door Wiring Loom Harness A2035405707

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2045451047

Control Unit Bracket Mercedes W204 W212 Audio Module Holder Mount A2045451047

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4L0907282B

Audi A7 4G8 Glow Plug Control Unit Controller Module 4L0907282B

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6519003701-3

Mercedes W212 OM651.924 204HP Engine Control ECU Kit A6519003701 Automatic

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2518703390

Mercedes W251 Rear Passengers Entertainment Control Unit A2518703390

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0001501780

Ignition Coil Mercedes W202 W203 M111 Cable Connector A0001501780

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2749000800-1

Mercedes W205 C200 274.920 184HP Engine ECU Kit A2749000800 Key Lock Automatic

€222.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2465410100

Mercedes W176 W246 Battery Cover Accumulator Trim Panel Lid A2465410100

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0065454601

Energy Distributor Mercedes W204 OM656 Power Control Unit Module A0065454601

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2034450000

Mercedes Vito W639 Gateway Control Unit Module A2034450000

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2519000800

Mercedes W251 PDC Parking Assistant Control Unit Module ECU A2519000800

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2469005413-1

Mercedes C117 Head Unit Radio Player Control Module Becker A2469005413

€379.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1669005412

Mercedes W166 Door Module Rear Left N/S Control Unit ECU A1669005412

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0025421219

Mercedes W168 W203 W211 Relay 6-Pin Black Tyco A0025421219

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

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