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 W118 W177 W206 W247 NOX Sensor A0009054807

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2475455500

Mercedes W177 Control Unit Bracket Amplifier Holder Mount Carrier A2475455500

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2215401833

Mercedes W221 Door Harness Left Right N/O/S Rear Door Wiring Loom A2215401833

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2465402705

Mercedes W176 Door Harness Loom Cable Wiring Front Left Right N/O/S A2465402705

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059008218

Telematics Module Mercedes W176 W205 W218 Communication Control Unit A2059008218

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009000800

Mercedes W204 W207 W212 Tyre Pressure Monitor Control Unit Module A0009000800

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2118202364-1

Mercedes W211Rear Light Lamp Taillight Left N/S Loom Harness Wire A2118202364

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2514406236

Mercedes W164 Steering Wheel Air Module Wire Wiring Cale Harness A2514406236

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2078200159-2

Mercedes W207 Headlight Lamp Light Front Left N/S Cable Wire Harness A2078200159

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129004901-1

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129004901

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1779008511

Door Module Mercedes W177 W247 Rear Left Right N/O/S Control Unit A1779008511

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. B67824252-1

Mercedes R171 iPod Interface Multimedia Music Connection Module Cable B67824252

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2218230050

Mercedes W221 Centre Console Telephone Keypad Control Unit Module A2218230050

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009052200

Windscreen Camera Mercedes W209 W212 W221 Front Control Unit Module A0009052200

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1679008406

Mercedes W167 W177 W247 Ignition Engine Control Unit Module A1679008406

€170.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2075402950

Mercedes W204 Power Distribiuton Battery Fuse Box Control Unit ECU A2075402950

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6429006301

Mercedes ML W166 X204 W221 Exhaust Gas Aftertreatment Control Module A6429006301

€170.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2045402310

Mercedes W204 Front Door Wiring Loom Harness Wiring Left N/S A2045402310

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2215401101

Mercedes W221 Fuse Box Control Unit SAM Module Relay Controller A2215401101

€142.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2219004704

Mercedes-Benz S W221 Comand 6-Changer CD Radio Head Unit DVD Navi A2219004704

€807.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2475400700

Mercedes W177 Rear Axle Wheel RPM Speed Left N/S Sensor Wire Harness A2475400700

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2139007436

Mercedes W177 W213 Gearbox Transmission Control Module Unit ECU A2139007436

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2048200015

Telephone Cable Mercedes W204 C207 W212 Wiring Adapter Line A2048200015

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1765406109

Wiring Harness Mercedes W176 A45 AMG Petrol M133 Low Temperature Pump Adapter

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6421501500-3

Mercedes W639 3.0CDI OM642.990 Engine Control Unit ECU Kit A6421501500 Automatic

€484.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2135452040

Mercedes W213 Head Unit Bracket Control Unit Module Holder Mount A2135452040

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2214405406

Mercedes W221 Wiring Loom Cable Harness Door Rear Right A2214405406

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129009622

Mercedes W212 Fuse Box Relay Rear SAM Control Unit Module A2129009622

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2189015200

Mercedes X218 Air Module Control Unit ECU Module A2189015200

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0035420219-1

Relay Mercedes W639 W906 5-Pin Black 12V 20A A0035420219 Set X2

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2215402062

Fuel Pump Module Mercedes ML W164 W204 Petrol Control Unit ECU A2215402062

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6385450319

Mercedes W639 W638 W906 Fuse Box Unit Holder Bracket Frame A6385450319

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2128270006

Camera Module Mercedes W207 W212 Reversing Rear View Control Unit A2128270006

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2118205885

Mercedes E-Class S-Class W211 W220 Nokia Phone Control Unit Module ECU

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2229006007

Mercedes w205 SAM Comfort Control Module Unit A2229006007

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059005713

Door Module Mercedes W205 Front Left N/S Door Control Module Unit A2059005713

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1779005409

Door Module Mercedes C118 W177 H243 Front Right O/S Door Control A1779005409

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469000112-1

Radio Head Unit Mercedes C117 W176 W246 Navi CD Player Navigation A2469000112

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0045467540

Mercedes W204 W221 Distributor Box Block Control Unit Relay A0045467540

€23.95

Free delivery: Sep 23 – 24

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Part no. A2059068501-1

Fuse Box Mercedes W205 S205 W213 Fuse Box Front Relay Control Module A2059068501

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1635450440

Mercedes-Benz M-Class ML W163 Holder Bracket Engine Control Unit A1635450440

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1779005109

Door Module Mercedes C118 W177 H243 Front Left N/S Door Control A1779005409

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9066800214

Mercedes Sprinter W906 Radio Fan Adapter Cooling Control Unit Module A9066800214

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2215420417-MB

Parking Sensor Mercedes W169 W204 W212 PDC Sensor Front Mountain Gray 787

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2139002734

Mercedes W177 W213 LED Headlight Range Control Module Unit A2139002734

€127.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2479001709

Mercedes W907 Radio Control Unit ECU Module A2479001709

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009006920

Mercedes W205 W213 Battery Control Unit Charging Terminal Module A0009006920

€313.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2126280041

Mercedes W212 Battery Holder Mount Bracket E-Class A2126280041

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0038207926

Door Module Mercedes W221 Door Control Unit Module A0038207926

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2124406207

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124406207

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6512012009

Alternator Support Bracket Mercedes W212 OM651 Belt Tensioner Holder A6512012009

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1636880035-1

Mercedes-Benz M-Class ML W163 1 Fuse Box Relay Lid Cover Trim A1636880035

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6461509372-1

Mercedes W204 C220CDI OM646.811 170HP Engine ECU Kit A6461509372 2 Keys Lock

€265.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2185408907

Mercedes CLS C218 Front Dashboard Console Wiring Loom Harness A2185408907

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469007314

Mercedes C117 X156 W166 Central Display Screen Multimedia Sat Nav A2469007314

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2045403850

Mercedes W204 SAM Fuse Prefuse Box Relay Control Unit A2045403850

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009009405

Mercedes C205 S205 W205 PDC Parking Assist Unit Control Module A0009009405

€104.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2479003216

Mercedes C118 W247 Head Unit Radio Sat Nav Navigation Control Unit A2479003216

€474.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6511598940

Mercedes W205 C253 Battery Harness Wire Holder Bracket Cable Duct A6511598940

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2239052400

Mercedes W177 W223 W247 Crash Impact Deployment Sensor Unit A2239052400

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2515450940

Mercedes W251 Fuse Box SAM Module Unit Bracket Carrier Holder A2515450940

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6519007600-1

Mercedes W176 A200CDI OM651.901 136HP Engine ECU Kit A6519007600 Automatic

€165.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 99761821001

Porsche 987C Alarm Anti Theft System Control Module Unit 99761821001

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2518701889

Antenna Amplifier Mercedes W164 W251 Aerial Control Unit Module A2518701889

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469005312

Mercedes X117 X156 W246 Relay Control Unit Module A2469005312

€75.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9065460643-1

Mercedes Sprinter W906 Fuse Box Relay Bracket Monunt Holder A9065460643

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009050338

Mercedes W212 Multi-Purpose Windscreen Camera Control Unit Module A0009050338

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2139065604

Mercedes W205 W213 C253 Navigation Map Memory Card A2139065604

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2189009003

Mercedes CLS C218 Front Headlight Xenon Ballast Control Module Unit A2189009003

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2749000900

Mercedes R172 SLK500 M274 Engine Control Unit Module ECU A2749000900

€379.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A4475401755

Earth Ground Cable Mercedes Vito W447 Positive Battery Lead Wiring A4475401755

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0025427219-1

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

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9075401805

Mercedes Sprinter W907 Battery Terminal Unit Connection Box A9075401805

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0005429723

Mercedes W220 Parking Sensor Display Control PDC A0005429723

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2055404306

Mercedes W205 Shock Absorber Adjustment Wire Harness Rear Right O/S A2055404306

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059060204-2

Mercedes W205 Front Headlight Wiring Harness Cable Plug Right O/S A2059060204

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2601501600

Mercedes W177 Engine Wiring Loom Harness Cables M260 Petrol A2601501600

€189.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1661500333

Mercedes A-Class W168 Cable Starter Line Negative Line Battery A1661500333

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2139008730

Mercedes C253 W177 W205 W247 Gearbox Module Control ECU Automatic A2139008730

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2075400740

Fuse Box Mercedes W204 Battery Terminal Control Unit Module A2075400740

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2049006007

Mercedes W204 Multimedia Audio CD Player Radio Head Unit A2049006007

€165.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1648700951

Mercedes GL Instrument Panel Switch Panel Seats PDC Suspension A1648700951

€108.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2045400150

Mercedes-Benz C E Class W204 W207 Fuse Distribution Box Interior A2045400150

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1775407932

Mercedes W177 W247 Positive Battery Cable Lead Wire Starter A1775407932

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129009908

Mercedes SLK R172 Fuse Box Relay Control Unit SAM Module A2129009908

€127.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1665402950

Mercedes W166 Prefuse Box F32/4 Power Distribution Box A1665402950

€132.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129001829

Mercedes C207 W212 Front Right Door O/S Control Unit Module A2129001829

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059000219

Mercedes C117 W176 W205 Telematics Module Communication Control Unit A2059000219

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0535450226

Mercedes Sprinter W906 Fuse Box Connector Plug Socket A0535450226

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0015409981

Mercedes W163 W212 W639 W906 Automatic Gearbox Connector Plug A0015409981

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2215402462

Mercedes W221 SAM Fuse Box Comfort Control Module Unit ECU A2215402462

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1765404609

Mercedes W176 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 9364201

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469006918

Mercedes C117 X156 All Wheel Drive Control Unit Module ECU MFA A2469006918

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6079002300-5

Mercedes W176 180 CDI 607.951 109HP ECU Kit A6079002300 Key Lock Automatic

€284.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2044406035

Mercedes W204 Front Door Wiring Harness Cable Passenger Side A2044406035

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A6396641914

Mount Support Mercedes Vito W639 Battery Bracket Holder Mounting A6396641914

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0018279904

Mercedes W204 A207 S212 S212 UCI-IPOD Video Connecting Cable Harness A0018279904

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0035420019

Mercedes W204 Battery Relay Fuse Control Unit Module A0035420019

€70.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2025405981

Mercedes Sprinter W907 W910 Wiring Cable Plug OBD Socket A2025405981 A9070005999

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

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