Mercedes CLA X118 Interior Doorcard Door Light Lighting Wiring Loom A1779060804

Mercedes CLA X118 Interior Doorcard Door Light Lighting Wiring Loom is an original electrical installation component designed to support the interior lighting within the doors of this model. As part of the Wires, plugs and connectors group, it ensures a precise connection between control modules and lighting points, resulting in stable lighting performance and consistency with Mercedes' factory electrical architecture. This is the ideal solution for users who want to maintain full functionality and interior aesthetics without compromise.

Specifications and technical data

• SKU: A1779060504
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1779060504
• Substitutable numbers: A1779060504, A 177 906 05 04, A1779069205, A 177 906 92 05
• Category: Sockets, Connectors & Wiring

Purpose and function of the door lighting wiring loom

The interior door lighting wiring loom in the Mercedes CLA X118 is responsible for powering and communicating with the lighting elements located in the doors – including entry area illumination, decorative elements, and functional lighting. Thanks to factory-standard wire routing and matched connectors, the installation maintains proper resistance to vibrations, moisture, and temperature changes typical of the door environment.

A properly selected wiring loom:

• ensures stable power supply to lighting points in the doors,
• maintains compatibility with the factory lighting control system,
• minimizes the risk of communication errors with comfort modules.

Construction and fitment to the Mercedes installation

As an element from the Wires, plugs and connectors category, the wiring loom has been designed for the specific electrical architecture of the Mercedes CLA X118. It includes properly formed wires and dedicated connectors that allow for installation in factory mounting points without the need for modifications. This solution reduces the risk of mechanical damage to the wires and eliminates the need for adapters or soldering.

Precise fitment to the model results in:

• easier installation in original grommets and holders,
• secure connection with control modules and lamps,
• preservation of the factory wire routing inside the doors.

Application in service and interior upgrades

The interior door lighting wiring loom is suitable both for standard repairs after installation damage and when replacing lighting elements with higher-spec versions, provided they are supported by the vehicle's configuration. Using an original wiring loom allows you to maintain compatibility with the diagnostic system and avoid communication issues within the vehicle's network.

This is particularly important when:

• wires have been damaged after a collision or interference with the door,
• sporadic failures of the interior door lighting occur,
• you are planning to restore the full functionality of the factory lighting package.

Characteristics of the used component

The offered wiring loom comes from dismantling, which allows for maintaining compliance with the original Mercedes specification while reducing costs compared to a new component. For many users, this is a reasonable compromise between quality and budget, especially for electrical installation components that are not visually exposed but are functionally significant.

Complementary Mercedes Wires, plugs and connectors

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other elements from the same group, such as additional wiring looms, connectors, or wire sections, check out the available parts in the Mercedes Wires, plugs and connectors category.

More about the use of used parts in Mercedes vehicles

If you are considering a broader upgrade of your car and want to better understand how to safely use used electrical and interior components in premium class vehicles, it is worth reading the practical advice and upgrade scenarios described in the article The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years. This is a good supplement to your knowledge when planning further service and aesthetic work.