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 W207 E350 OM642.838 Engine Control Unit ECU Kit A6421508900 Automatic

€408.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009050410

Mercedes W176 W205 C207 W212 Front Radar Distance Sensor Unit Module A0009050410

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2129008729

Mercedes W176 W207 W212 Keyless Module ECU Door Lock Control Unit A2129008729

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2079057501

Mercedes E-Class W207 Cabrio A207 ITS Camera Control Unit Module ECU

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055404596

Mercedes W205 Electrical Ground Line Wire Earth Cable A2055404596

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A9075404687-1

Mercedes W907 Battery Cable Alternator Wiring Loom Harness Cabling A9075404687

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2045409907

Mercedes W204 Battery Wiring Cable Harness Loom A2045409907

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2535401001

Battery Cable Mercedes C238 C253 Starter Alternator Wiring Harness A2535401001

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0025463141

Mercedes A209 C209 Line Connector Terminal Point Positive Lead Fuse A0025463141

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2048207885

Mercedes-Benz C-Class W204 Rear Right Door O/S Control Unit Module A2048207885

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2074405734

Mercedes W207 Wiring Loom Harness Cable A2074405734

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2579006600

Mercedes C118 W167 W177 W205 W213 C238 Communication Module Unit A2579006600

€222.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6519003203-2

Mercedes W906 313 CDI OM651.955 129HP Engine ECU Kit A6519003203 Automatic

€389.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6519007401

Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine Module ECU A6519007401

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2115454840

Mercedes E-Class S211 W211 Battery Tray Holder Mounting Bracket A2115454840

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2649000700-5

Mercedes W205 C 200 264915 197HP Engine Control ECU Module A2649000700 Automatic

€246.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6519007500-28

Mercedes C207 E220CDI Engine Unit ECU 170HP 2.1 Diesel Automatic A6519007500 KIT

€170.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A4159066300

Mercedes W415 Starter Motor Diesel 607951 A4159066300

€47.95

Free delivery: Sep 14 – 16

If paid before 14:00

Part no. A2198200326

Door Module Mercedes C219 Rear Door Right O/S Control Module A2198200326

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1668200075

Mercedes W205 Aerial Antenna Control Unit Keyless Go Entry A1668200075

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 284B13867R

Mercedes Citan W415 Renault Kangoo BCM Body Control Module Unit ECU 284B13867R

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2198200164-1

Mercedes C219 Rear Lamp Left N/S Tail Light Taillight Loom Harness A2198200164

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1718200004

Mercedes R171 Wiring Harness Loom Cable Ventilation Driver Side A1718200004

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2535405429

Mercedes C253 OM656 Diesel Engine Motor Wiring Loom Cable Harness A2535405429

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2469006710

Radio CD Player Mercedes W176 W246 COMAND Nav Sat Head Unit A2469006710

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2115460580

Wiring Holder Mercedes W211 Cable Loom Harness Cover Channel A2115460580

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1644400837

Mercedes W164 Parking Sensor Wiring Loom Cable Harness Front PDC A1644400837

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2125400382

Mercedes W212 Cover Fuse Box Trim Panel Lid A2125400382

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2038202285

Mercedes-Benz C-Class W203 Door Control Module Right Rear O/S A2038202285

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2034400033

Mercedes CLC CL203 Wiring Loom Cable Door Front Left Right N/O/S A2034400033

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2124405806

Mercedes W204 W212 Travel Monitor Sensor Wiring Loom Harness Cable A2124405806

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055455100

Mercedes W205 W213 C238 Power Distribution Unit Busbar Connector A2055455100

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2129004711

Mercedes W204 W212 Front Fuse Box Relay Control Unit SAM Module A2129004711

€232.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6519009002

Mercedes W212 E300 BlueTEC Hybrid 204HP Engine Control Module ECU A6519009002

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1645450201

Fuse Box Mercedes ML W164 W251 OM642 Diesel Relay Module Unit A1645450201

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1175401205

Mercedes C117 Drivers Door Wiring Harness A1175401205

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0038206926

Mercedes W221 Door Control Module Unit ECU Rear Left N/S A0038206926

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2709002100-18

Mercedes W176 A45 4-Matic M133.980 Engine Control ECU Kit Automatic A2709002100

€503.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2115452647

Bracket Mount Mercedes W211 W219 Control Unit Module SAM Holder A2115452647

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1698207426

Mercedes-Benz A B Class W169 W245 Door Control Unit Right O/S Rear A1698207426

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2319009106

Door Module Mercedes R231 Front Door Right O/S Control Module A2319009106

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2475450001

Mercedes W177 48V Additional Battery Holder Mounting Bracket A2475450001

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2319014702

Mercedes R231 Air Module Control Unit ECU SRS Module A2319014702

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009058100

Mercedes ML W166 GL X166 SL R231 C292 Crash Impact Sensor A0009058100

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055406921

Battery Wiring Mercedes X253 Diesel OM651 Alternator Harness Cable A2055406921

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2075405105

Mercedes W204 C207 W212 Panoramic Sunroof Wiring Cable Harness A2075405105

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6421507391-1

Mercedes W221 OM642.930 235HP Engine Control ECU Kit A6421507391 Automatic

€127.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2075406932

Mercedes A207 Boot Tailgate Wiring Loom Harness Cable A2075406932

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1698202561

Mercedes W245 Headlight Headlamp Lamp Light Wiring Front Left N/S A1698202561

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A9075409482

Fuse Box Mercedes Sprinter W907 Prefuse Box Module Relay Holder A9075409482

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2124407038

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124407038

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2535402128

Mercedes X253 Starter Motor Wiring Harness Cable A2535402128

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2038205185

Mercedes W203 W209 C215 Phone Control Module A2038205185

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009050238

Windscreen Camera Mercedes W204 W212 Front Windshield Camera Unit A0009050238

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1665402102

Battery Cable Mercedes W166 C292 Starter Alternator Wiring Harness A1665402102

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1765401505

Mercedes C117 W176 Interior Centre Console Cable Wiring Loom A1765401505

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2045403750

Mercedes W204 SAM Module Control Unit Electrical Fuse Box Unit A2045403750

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2129004518

Door Control Unit Mercedes W204 W207 W212 Front Left N/S Module ECU A2129004518

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2198201604

Mercedes C219 Seat Harness Wire Loom Electric Line Front Left N/S A2198201604

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055406304

Mercedes W205 Hybrid Battery Cable Starter Wiring Loom Harness A2055406304

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2661501233

Engine Wiring Mercedes W169 W245 M266 Petrol Cable Loom Harness A2661501233

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2058200704

Sunroof Wiring Mercedes W205 X253 Panoramic Roof Motor Cable Harness A2058200704

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2711502879-1

Mercedes W204 C200 M271.950 184HP Engine ECU Kit A2711502879 Ignition + Key Lock

€569.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2229001814

Door Module Mercedes W205 X253 Rear Left N/S Control Unit A1698209126

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2079011800

Mercedes W204 W207 Control Unit ECU Sensor Module Air SRS Bag A2079011800

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2044409734-1

Mercedes C204 Front Bumper PDC Wiring Parking Sensor Loom Harness A2044409734

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2319059900

Mercedes C253 Rear Bumper Switch Tailgate Opener Sensor Module A2319059900

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2128206513

Mercedes W212 Seat Adjustment Wiring Harness Wire Front left N/S 2128206513

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2479008306

Mercedes W177 W205 W213 Windscreen Camera Front Windshield Cam Unit A2479008306

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6421508100-3

Mercedes V251 642.950 4-Matic 224HP Engine Control ECU A6421508100 Automatic

€279.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2219000801

Mercedes W221 Front Door Control Module Unit Left N/S A2219000801

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0141540402

Alternator Mercedes W164 OM272 Engine Alternator 180A 14V Valeo A0141540402

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2761508800

Starter Cover Mercedes W205 W212 W213 M276 Heat Plate Motor Shield A2761508800

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2709002100-12

Mercedes W176 M270.910 122HP Engine Control ECU Kit A2709002100 Automatic

€332.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2098209810

Mercedes CLK A209 Cabrio Alarm Anti Theft System Control Module Unit A2098209810

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2465403803

Mercedes-Benz A-Class W176 Cover Equipment Electrical Fuse Box A2465403803

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2701590042

Ignition Coil Mercedes W176 M270 Petrol Ignition Cable Connector A2701590042

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2059008543

Mercedes W205 X235 BCM Body Control Unit Module ECU A2059008543

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A4475406777

Alternator Wire Mercedes Vito W447 Battery Alternator Cable A4475406777

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2115400131

Mercedes C219 Battery Starter Alternator Ground Earth Cable A2115400131

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1775455800

Mercedes W177 AMG Control Unit Bracket Module Holder Mount A1775455800

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A4155401005

Mercedes Citan W415 Renault Kangoo Front Door Wiring Loom Left N/S 8200809160

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1665402450-1

Mercedes ML W166 Fuse Box Front Relay Control Unit Module A1665402450

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2135405542

Mercedes W205 Electrical Wire From Transmission To Body Ground Cable A2135405542

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2229002108

Mercedes W205 S205 Rear Door Control Module Left N/S A2229002108

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1679008311

Mercedes C238 Door Control Unit Module ECU Front Left N/S A1679008311

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0025428019

Relay Mercedes W176 W246 4-Pin Black Hella 12V A0025428019

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0005400902

Mercedes W212 Vito W447 Adblue Injector Nozzle Wiring Harness Cable A0005400902

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009821012

Mercedes W166 W213 C238 Power Distribution Plate Control Unit Module A0009821012

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055400428

Battery Wiring Mercedes GLC X253 C253 Diesel OM651 Starter Cable A2055400428

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1175401805

Mercedes C117 Front Door Wiring Harness Cable Passenger Side A1175401805

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2129007024

Mercedes CLS C218 Front Fuse Relay Box On Board Supply A2129007024

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0014460340

Mercedes W245 B150 CDI OM266.920 Engine Control Unit Module ECU A0014460340

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A6461501077-2

Mercedes Vito W639 OM646.980 116HP Engine ECU Control Set A6461501077 Manual

€450.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1698209926

Mercedes W169 W245 ECU Air Control Unit Sensor Module A1698209926

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0005468502

Battery Cover Mercedes W205 W212 Battery Positive Pole Cover Red A0005468502

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2229052705

Mercedes W205 Rear Switch Unit Tailgate Trunk Boot Lid Control ECU A2229052705

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1635407505

Mercedes W163 Electric Seat Adjuster Motor Wiring Harness Cable A1635407505

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1664402406

Mercedes ML W166 Front Door Wiring Harness Cable Driver Side A1664402406

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

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