Mercedes W177 Rear Lamp Right O/S Tail Light Plug Socket Wiring A0005404204

Mercedes W177 Rear Lamp Right O/S Tail Light Plug Socket Wiring is an original electrical component designed to support the right rear light in the W177 body style. Thanks to its factory-perfect fit for the specific lamp and vehicle harness, it ensures a stable electrical connection and the proper operation of the car's rear lighting functions. This is a practical solution for replacing a damaged lamp, repairing the wiring, or restoring the lighting system to full functionality.

Specifications and technical data

• SKU: A1779068402-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1779068402
• Substitutable numbers: A1779068402, A 177 906 84 02, A0005404204, A 000 540 42 04
• Location on the vehicle: Rear, Right
• Category: Rear Light Assemblies

Purpose and function in the lighting system

The offered socket with wiring is a component dedicated to the right side of the rear body in the Mercedes W177 model. It is responsible for the secure connection of the tail light and brake light to the vehicle's electrical system, enabling all lighting functions intended by the manufacturer to operate correctly.

This solution is particularly useful when the factory socket has been damaged, the contacts have overheated, or the wires near the lamp have been severed. Using an original component allows you to maintain compliance with the vehicle's factory specifications and avoid issues with control module communication.

Construction and installation fitment

The socket has been designed as part of the right-side rear lamp installation, with a body and connector specifically shaped for this type of light housing. The design features:

• a dedicated connector for the passenger-side tail light,
• factory-selected wires with the appropriate cross-section,
• a pin layout compatible with the Mercedes W177 electrical system.

This configuration facilitates a plug-in installation in place of the damaged component, without the need for modifying the wiring or using adapters.

Application in the Tail lights and brake lights category

This element operates directly in the Tail lights and brake lights area, where reliable power supply to all lamp functions – such as position lights, brake lights, or additional lighting if provided in the specific vehicle configuration – is crucial. A functional socket with wiring minimizes the risk of:

• flickering or loss of tail light function,
• lighting errors on the instrument cluster,
• overheating and oxidation of contacts.

By maintaining the original connection architecture, the lighting system works correctly with the vehicle's electronics, which is important for both safety and regulatory compliance.

Characteristics of the used part

The offered component comes from disassembly and is classified as a used part. This means it was previously used in a vehicle but retains the functionality required for continued operation in the electrical system. For many users, this is a reasonable compromise between purchase cost and maintaining the original build quality characteristic of the Mercedes brand.

When choosing a used socket with wiring, it is worth paying attention to the condition of the connectors, wire insulation, and the absence of visible mechanical damage – this approach allows you to effectively restore the lighting system's efficiency without the need to invest in a new, significantly more expensive element.

Selection support and knowledge expansion

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your Mercedes and need other elements from the same group, such as combination lamps, control modules, or additional wiring, check out the available parts in the Mercedes Tail lights and brake lights category.

When making a decision to purchase parts from disassembly, a practical guide describing the principles of safe selection and operation of such components may be helpful – you can find it in the article Used parts – Your guide to the best offers in the automotive store, which discusses, among other things, cost-effectiveness, condition verification, and the impact on further vehicle operation.