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 X218 Air Module Control Unit ECU Module A2189015200

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2117663506

Mercedes R171 W204 C209 W220 Ignition Key Remote Control Unit Fob A2117663506

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2215402062

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2539064002-2

Mercedes C253 Rear Light Lamp Taillight Right O/S Harness Wire Loom A2539064002

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6385450319

Mercedes W639 W638 W906 Fuse Box Unit Holder Bracket Frame A6385450319

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2128270006

Camera Module Mercedes W207 W212 Reversing Rear View Control Unit A2128270006

€37.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2229006007

Mercedes w205 SAM Comfort Control Module Unit A2229006007

€47.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A0045467540

Mercedes W204 W221 Distributor Box Block Control Unit Relay A0045467540

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059068501-1

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

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635450440

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2479001709

Mercedes W907 Radio Control Unit ECU Module A2479001709

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006920

Mercedes W205 W213 Battery Control Unit Charging Terminal Module A0009006920

€313.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0038207926

Door Module Mercedes W221 Door Control Unit Module A0038207926

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2124406207

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124406207

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6512012009

Alternator Support Bracket Mercedes W212 OM651 Belt Tensioner Holder A6512012009

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2185408907

Mercedes CLS C218 Front Dashboard Console Wiring Loom Harness A2185408907

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045403850

Mercedes W204 SAM Fuse Prefuse Box Relay Control Unit A2045403850

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009009405

Mercedes C205 S205 W205 PDC Parking Assist Unit Control Module A0009009405

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479003216

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

€474.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6511598940

Mercedes W205 C253 Battery Harness Wire Holder Bracket Cable Duct A6511598940

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2515450940

Mercedes W251 Fuse Box SAM Module Unit Bracket Carrier Holder A2515450940

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519007600-1

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

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99761821001

Porsche 987C Alarm Anti Theft System Control Module Unit 99761821001

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2518701889

Antenna Amplifier Mercedes W164 W251 Aerial Control Unit Module A2518701889

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469005312

Mercedes X117 X156 W246 Relay Control Unit Module A2469005312

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229008105

Mercedes W205 W222 Headlight Headlamp Control Module Unit Right O/S A2229008105

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9065460643-1

Mercedes Sprinter W906 Fuse Box Relay Bracket Monunt Holder A9065460643

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009050338

Mercedes W212 Multi-Purpose Windscreen Camera Control Unit Module A0009050338

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2189009003

Mercedes CLS C218 Front Headlight Xenon Ballast Control Module Unit A2189009003

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2749000900

Mercedes R172 SLK500 M274 Engine Control Unit Module ECU A2749000900

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4475401755

Earth Ground Cable Mercedes Vito W447 Positive Battery Lead Wiring A4475401755

€66.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A9075401805

Mercedes Sprinter W907 Battery Terminal Unit Connection Box A9075401805

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005429723

Mercedes W220 Parking Sensor Display Control PDC A0005429723

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139068701-3

Mercedes C205 W213 Fuse Box Rear SAM Module Electrical Control Unit A2139068701

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055404306

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

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059055211

Mercedes W117 W154 W205 W213 W217 Tailgate Open Switch Sensor Rear A2059055211

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2601501600

Mercedes W177 Engine Wiring Loom Harness Cables M260 Petrol A2601501600

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1661500333

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139008730

Mercedes C253 W177 W205 W247 Gearbox Module Control ECU Automatic A2139008730

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2075400740

Fuse Box Mercedes W204 Battery Terminal Control Unit Module A2075400740

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049006007

Mercedes W204 Multimedia Audio CD Player Radio Head Unit A2049006007

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1648700951

Mercedes GL Instrument Panel Switch Panel Seats PDC Suspension A1648700951

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045400150

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129009908

Mercedes SLK R172 Fuse Box Relay Control Unit SAM Module A2129009908

€127.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1665402950

Mercedes W166 Prefuse Box F32/4 Power Distribution Box A1665402950

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129001829

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059000219

Mercedes C117 W176 W205 Telematics Module Communication Control Unit A2059000219

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0535450226

Mercedes Sprinter W906 Fuse Box Connector Plug Socket A0535450226

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1765404609

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

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469006918

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

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2044406035

Mercedes W204 Front Door Wiring Harness Cable Passenger Side A2044406035

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229007414

Mercedes C253 Parking Camera Control Module Unit ECU 3.0 Diesel A2229007414

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139003515

Mercedes W213 Rear View Parking Camera Control Module ECU A2139003515

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6396641914

Mount Support Mercedes Vito W639 Battery Bracket Holder Mounting A6396641914

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0018279904

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2025405981

Mercedes Sprinter W907 W910 Wiring Cable Plug OBD Socket A2025405981 A9070005999

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479008109

Mercedes V177 W247 Body Control Module BCM V2 Unit ECU A2479008109

€118.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0095404981

Mercedes W204 ABS Pump Wiring Loom Harness Cover Trim Cap A0095404981

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059007143

SAM Module Mercedes W205 Trunk Rear SAM Control Module A2059007143

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2058201201

Sunroof Wiring Mercedes C205 C238 Panoramic Motor Cable Harness A2058201201

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2034404432

PDC Wiring Mercedes CL203 Front Bumper Parking Sensor Loom Cable A2034404432

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729008206

Interface Module Mercedes W176 W204 W212 Multimedia Control Unit A1729008206

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2213201058

Mercedes R231 Valve Block Air Suspension Control Unit A2123200358

€203.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118703485

Mercedes W211 Door Module Rear Right O/S Control Unit ECU A2118703485

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0131547002-1

Alternator Generator Mercedes W211 CLS C219 OM642 Diesel 14V 180A A0131547002

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006302

Mercedes W176 Automatic Gearbox Transmission Module Control Unit ECU A0009006302

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229006916

Mercedes W213 Satelite Navigation Stereo Radio Head Unit Module A2229006916

€607.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715400107

Mercedes SLK R171 Window Lifter Lift Switch Cable Wiring Harness A1715400107

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469055003-1

Ignition Switch Mercedes W167 W177 W247 Lock Control Unit Module A2469055003

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519006401-2

Mercedes W205 C300h 651.921 204HP Engine ECU Kit Key + Ignition A6519006401

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775405340

Mercedes W177 Door Wiring Harness Cable Loom Front A1775405340

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465407811

Mercedes A45 AMG W176 Door Wiring Loom Harness Wire Rear Left N/S A2465407811

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2035407308

Mercedes-Benz C-Class W203 Rear Left Right Door Wiring Loom Harness A2035407308

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005456616

Mercedes W212 Automatic Gearbox EGS Control Module Unit ECU A0005456616

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645401908

Mercedes ML W164 Rear Left Door N/S Ribbon Electrical Cable Wiring

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2208216279

Mercedes-Benz S-Class W220 Door Control Module Left Rear N/S A2208216279

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645453047

Mercedes ML W164 Trunk Tailgate Foam Control Unit Module Bracket A1645453047

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118202464-1

Mercedes W211 Tail Lamp Rear Light Right O/S Harness Loom Wire Cable A2118202464

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2074402805

Mercedes W207 Head Unit Navigation Media Cable Wiring Harness A2074402805

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401510

Mercedes C Class W205 Door Wiring Loom Harness Rear Right O/S A2055401510

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2721533291-1

Mercedes C219 Engine Control ECU Module 272 HP CLS 350 Automatic A2721533291 KIT

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009050254

Mercedes W212 Negative Battery Cable Terminal Wiring A0009050254

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465405833

Mercedes W176 W246 Starter Cable Loom Wiring 160 180 CDI Diesel A2465405833

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135402870

Ground Cable Mercedes C238 Fuse Box Wire Prefuse Box Wiring A2135402870

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055401604

Mercedes W205 Battery Cable Wiring Harness Loom Petrol Hybrid A2055401604

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6395480174

Mercedes-Benz Vito W639 Fuse Box Cooling Outlet Pipe Air Duct A6395480174

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1664409735

Mercedes ML W166 Battery Cable Alternator Starter Motor Wiring A1664409735

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775404910

Cable Wiring Mercedes W177 W247 Fuel Pump Sending Unit Plug Socket A1775404910

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729058300

Mercedes SLK R172 Pedestrian Protection Impact Crash Sensor Module A1729058300

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779069505

Mercedes C118 W177 H247 X243 Centre Console Ambient Light Wiring A1779069505

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

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