What is the construction and purpose of wires, harnesses, and connectors?

Wires, harnesses, and connectors are elements of a car's electrical installation that connect power sources, consumers, sensors, and controllers. A typical set consists of conductive cores, insulation, covers, plugs, pins, and mounting points to the body or equipment. These parts appear in various vehicle zones, from the engine compartment to the interior and trunk lid. Their construction must correspond to the specific circuit and car equipment.

What are wires, harnesses, and connectors used for?

Wires, harnesses, and connectors are used to transmit current and control signals between car components. They are responsible for powering devices, communication between modules, and maintaining stable electrical connections. Without them, lighting, starting, charging, sensors, or onboard electronics would not work properly. Their condition also affects the speed of fault diagnosis and the reliability of installing other electrical elements.

What is the construction and function of an electrical connector in a car?

An electrical connector is an element connecting two sections of an installation or a wire to a specific vehicle component. It usually consists of a housing, contact pins, a latch, and often a seal protecting against moisture and dirt. Its function is to ensure a secure contact and the possibility of safely disconnecting the installation during service. The appropriate type of connector is important for conductivity quality, sealing, and vibration resistance.

How to choose wires, harnesses, and connectors for a specific car version?

It is safest to compare the OEM part number, interchangeable numbers, location on the vehicle, and the body and equipment version. It is also worth checking the number of pins, plug shape, harness routing, and mounting points. For elements supporting several systems, the fuel type and the presence of additional modules are also important.

What symptoms indicate wear of wires, harnesses, and connectors?

Typical symptoms include intermittent power loss, controller errors, blown fuses, unstable lighting operation, and problems with starting selected devices. In practice, insulation cracks, corrosion on contacts, and damage in bending areas are also encountered. Such signals should be immediately compared with the mounting location and the condition of the connections.

How to take care of wires, harnesses, and connectors after installation?

After installation, ensure the harness is routed correctly so it does not rub against sharp edges and is not exposed to excessive bending. It is also important to properly seat all clips, holders, and latches, and to keep the connectors clean. During periodic inspections, it is good to check the condition of the insulation and the tightness of connections in areas exposed to moisture.

Wiring Harnesses, Cables & Connectors

At the Global Parts automotive store, we offer a wide selection of original used car parts, including cables, harnesses and connectors for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen and others. The cables, harnesses and connectors we offer undergo quality control so that you can be sure that you are receiving a top-class product.

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Mercedes Sprinter W906 Diesel OM651 Engine Wiring Loom Harness A6511509000

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Part no. A1715403932

Mercedes SLK R171 Rear Bumper PDC Wiring Loom Parking Sensor Cable A1715403932

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Part no. A1635402810

Mercedes-Benz M ML W163 OM612 Engine Wiring Harness Loom Cable A1635402810

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Part no. A1765405408

Mercedes-Benz A-Class W176 Front Door Cable Wiring Loom Harness A1765405408

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Part no. A2105400230

Mercedes-Benz E-Class W210 Battery Positive Plus Cable Loom Harness A2105400230

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Part no. A2711500620

Engine Wiring Mercedes W204 C207 W212 M271 Harness Loom Cable A2711500620

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Part no. A1694402805

Mercedes-Benz A B W169 W245 Starter Alternator Battery Lead Cable A1694402805

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Part no. B67824524

Mercedes W164 Media Interface Connection Cable MI AUX Wiring B67824524

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Part no. A1635402209

Mercedes-Benz M ML W163 Rear Bumper Parktronic Wiring Loom Harness A1635402209

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Part no. A6511506190

Mercedes W906 Engine Installation Wiring Harness Loom A6511592725

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Part no. A9065403815

Mercedes Sprinter W906 OM651 Battery Wiring Harness Loom Cable A9065403815

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Part no. A1644406532

Mercedes ML W164 Diesel OM629 Wiring Alternator Starter Harness A1644406532

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Part no. A4475407604

Mercedes Vito W447 Earth Ground Cable Negative Battery Lead Wiring A4475407604

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Part no. A2465402605

Mercedes-Benz A B W176 W246 Engine Temperature Sensor Wiring Cable Harness

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Part no. A9065403527-1

Positive Cable Mercedes W906 OM651 Battery Starter Alternator Plus A9065403527

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Part no. A2135402045

Mercedes W213 Center Console Cupholder Lamp Wiring Harness A2135402045

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Part no. A2105401930

Mercedes-Benz E-Class W210 Battery Positive Plus Cable Loom Harness A2105401930

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Part no. A1645401730

Mercedes W164 Battery Starter Alternator Wiring Harness Cable OM642 A1645401730

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Part no. A2124404250

Mercedes W212 Front Air Vent Centre Cable Wiring Dashboard Loom A2124404250

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Part no. A6511505520

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

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Part no. A1635401041

Mercedes-Benz M ML W163 Ground Earth Strap Cable Wiring A1635401041

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Part no. A2105401031

Mercedes-Benz E-Class W210 Battery Ground Earth Strap Cable Wiring A2105401031

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Part no. A2124400613

Wiring Harness Mercedes W212 Dashboard Dash Wiring Cable A2124400613

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Part no. A2465407732

Battery Cable Mercedes W176 W246 Positive Wiring Starter Harness A2465407732

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Part no. A2045401706

Mercedes W204 Front Left Right N/O/S Seat Wiring Loom Cable Harness A2045401706

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Part no. A6461502720

Mercedes Vito W639 OM646 Diesel Engine Wiring Cable Loom Harness A6461501388

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Part no. A2045421118

Mercedes W204 W451 Negative Cable Battery Terminal Wiring A2045421518

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Mercedes W205 Door Wiring Loom Harness Cable Rear Right Left N/O/S A2055409591

-40%

Part no. A2055409591

Mercedes W205 Door Wiring Loom Harness Cable Rear Right Left N/O/S A2055409591

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Part no. A1669055901

Mercedes C292 Negative Cable Battery Terminal Sensor A1669055901

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Part no. RHD-A1664404337

Mercedes C292 Positive Cable Battery Starter Alternator Plus Wiring A1664404337

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Part no. A6397600104

Bowden Cable Mercedes W639 Vito Door Handle Catch Top Rear Left Wire A6397600104

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Part no. A1635401630

Mercedes-Benz M ML W163 Battery Positive Plus Terminal Lead Cable A1635401630

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Part no. A1635408905

Mercedes-Benz M-Class ML W163 Rear Axle Brake Wiring Loom Harness A1635408905

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Part no. A6421500856

Mercedes W164 Diesel OM642 Engine Wiring Loom Harness Cable A6421500856

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Part no. A2074405433

Mercedes-Benz E W207 Cabrio A207 AdBlue Additive Fuel Tank Wiring Adapter Cable

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Part no. rhd-A0009052902

Mercedes W212 Negative Cable Battery Terminal Wiring A0009052902

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Part no. A1695407405

Mercedes W169 Wiring Loom Cable Door Front Left Right N/O/S A1695407405

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Part no. A2025400231

Mercedes CLK W202 W208 Battery Negative Earth Cable Wiring A2025400231

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Mercedes W212 Rear LED Wiring Cable Harness Loom A2125406105

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Part no. A1695408033

Mercedes-Benz A W169 Front Driver's Side Door Wiring Loom Harness A1695408033

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Part no. A1405403481

Parktronic Mercedes Sprinter W901 W903 Front Bumper PDC Wiring Loom Harness

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Mercedes W212 Door Wiring Loom Cable Rear Left Right N/O/S A2124401851

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Mercedes Vito W639 Key Reader Ignition Lock Cable Wiring Harness A6395402710

-5%

Part no. A6395402710

Mercedes Vito W639 Key Reader Ignition Lock Cable Wiring Harness A6395402710

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Part no. A0001594942

Mercedes-Benz C-Class W203 M111 Ignition Coil Cable Connector A0001594942

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Part no. A2385407716

Mercedes C238 Parking Sensor Wiring Rear Bumper PDC Loom Cable A2385407716

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Part no. A1635400841

Mercedes W163 Battery Ground Earth Strap Cable Wiring A1635400841

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Part no. A2115405332

Mercedes S211 Rear Axle Self Levelling Device Cable A2115405332

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Part no. A1645402405

Mercedes ML W164 Cable Loom Wiring Parking Sensors Rear Bumper A1645402405

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Part no. A2215408507

Mercedes W221 Door Wiring Harness Cable Front Left Right N/O/S A2215408507

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Part no. A0045428718

Mercedes-Benz C E W203 W211 Parking Sensor Wiring Loom Cable Harness Front PDC

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Part no. A1685405908

Mercedes-Benz A-Class W168 Door Cable Harness Wiring Loom Rear A1685405908

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Part no. A1179061700-1

Mercedes CLA C117 Rear Tail Light Lamp Wiring Harness Cable Left N/S A1179061700

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Part no. A9064402341

Positive Cable Mercedes W906 OM651 Battery Starter Alternator Plus A9064402341

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Part no. A2074407613

Mercedes-Benz E-Class W207 Cabrio A207 Centre Console Divider Wiring Harness

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Part no. A1775408457

Mercedes W118 W177 Alternator Earth Cable Wiring Harness Loom A1775408457

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Part no. A9075400500

Mercedes W907 Battery Cable Wiring Loom Harness Cabling A9075400500

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