Mercedes W205 Rear Door Harness Wiring Cable Left Right N/O/S A2055401542

Mercedes W205 Rear Door Harness Wiring Cable Left Right is an original electrical installation component designed to support the rear doors on both the left and right sides in W205 series models. Thanks to its factory-spec design, the harness ensures proper electrical signal routing and a stable connection between the doors and the vehicle body, which translates into trouble-free operation of the electrical equipment. This is a practical solution for users who want to restore full functionality to the rear doors without interfering with the original installation architecture.

Specifications and technical data

• SKU: A2055401542
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2055401542
• Substitutable numbers: A2055401542, A 205 540 15 42
• Location on the vehicle: Rear, Right, Left
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function of the harness

The presented wiring harness is a component from the Wires, harnesses, and connectors group, responsible for transmitting power and control signals between the rear doors and the vehicle's main electrical system. It covers the area of both the left and right sides of the rear body, allowing for the operation of multiple door functions within one cohesive system.

Thanks to its factory fit for the Mercedes W205 design, the harness allows for maintaining the original wire routing, proper connector placement, and appropriate mechanical strain relief in the door hinges. This minimizes the risk of insulation abrasion, circuit breaks, and communication issues between control modules and actuators in the doors.

Construction and fit for Mercedes W205

The harness has been designed specifically for the electrical architecture of the Mercedes W205, which means compatibility with factory mounting points, grommets, and sockets in the rear doors. The connectors used are prepared to work with original modules and equipment installed in the rear doors, which facilitates installation and reduces the need for additional modifications.

The placement on the vehicle covers the rear part of the body on the left and right sides, so one harness can serve both sides of the vehicle within the configuration provided by the manufacturer. Such a solution promotes the consistency of the installation and facilitates the diagnosis of potential faults within the rear doors.

Benefits of using an original harness

Using an original wiring harness in a Mercedes W205 brings a number of practical technical benefits:

• maintaining factory compatibility with the vehicle's electrical system,
• proper adjustment of wire length and connector placement to the geometry of the rear doors,
• reducing the risk of installation errors typical of universal solutions,
• easier diagnostics in case of future inspections or repairs of the installation.

For users looking for a solution close to the factory standard, using such a harness allows for maintaining the consistency of the electrical installation and the proper operation of systems powered and controlled from the rear doors.

Product characteristics and service application

The rear door wiring harness for the Mercedes W205, as an element of the electrical installation group, will work well both for repairs after mechanical damage to the wires and for replacing worn-out sections of the installation in older vehicles. The product comes from the Mercedes brand, which helps maintain compliance with service documentation and electrical diagrams used in authorized service centers.

In practice, the installation consists of recreating the factory routing of the harness within the rear doors and body pillars, using the mounting points provided by the manufacturer. This approach allows for maintaining proper protection of the wires against vibrations, moisture, and mechanical damage, which has a direct impact on the long-term, stable operation of the installation.

Expansion of the installation within the Mercedes rear doors

If you are planning a comprehensive repair or upgrade of the rear door zone in your Mercedes and need other components from the same group, such as additional harnesses, wire sections, or service connectors, check out the available parts in the Mercedes wires, harnesses, and connectors category.

More practical information on the selection and operation of original, used components of this brand can be found in the article Used parts for Mercedes – original components from dismantling, which discusses the advantages of using factory elements in the service and operation of Mercedes-Benz vehicles.