Mercedes W177 Door Wiring Rear Door Left N/S Module Harness Cables A1775401910

Mercedes W177 rear left door harness – door module wiring is an original electrical system component from the Wires, Harnesses, and Connectors category, designed for the rear left door panel. It enables proper connection of the door module to the vehicle's electrical system, ensuring stable power supply and communication with the body's electronics. Thanks to its factory design, the harness is tailored to the W177 Mercedes' electrical architecture and allows for efficient service installation.

Specifications and technical data

• SKU: A1775401910
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1775401910
• Substitutable numbers: A1775401910, A 177 540 19 10
• Location on the vehicle: Rear, Left
• Category: Wiring Harnesses, Cables & Connectors

Vehicle Application and Placement

The presented harness is designed for installation in the rear left door of W177 series vehicles. It is responsible for connecting the door module to the main body electrical system, which includes, among other things, powering the control unit, transmitting control signals, and communicating with other comfort and safety systems.

Precise fitment for the specific vehicle location minimizes the risk of wire strain, insulation abrasion, and installation errors, contributing to stable operation of the door's electrical systems.

Technical Characteristics of the Door Harness

The harness belongs to the Wires, Harnesses, and Connectors group, meaning it is constructed for durable signal and power transmission in the demanding environment of a car door. The connectors used are factory-matched to the door module and the vehicle's wiring, allowing for a near plug-and-play installation without the need to modify the original system.

The arrangement of wires, section lengths, and mounting points have been selected for the specific body model, facilitating correct routing of the harness through the door grommet and minimizing the risk of mechanical damage during operation.

Condition, Origin, and Service Application

This component is a used part, offered as a used rear left door harness, making it a cost-effective solution for collision repairs, replacing damaged door wiring, or restoring door module functionality after an electrical failure. Its original origin ensures compatibility with the vehicle's factory specifications, including mounting geometry and connector types.

In service practice, such a harness is used for, among other things:

• Repairs after mechanical damage to the door or grommets,
• Problems with the door module's communication with the rest of the system,
• Faults resulting from broken or shorted wires in the hinge area.

Benefits of Using an Original Mercedes Door Harness

Using a factory harness dedicated to the W177 helps maintain electrical system integrity and reduces the risk of diagnostic errors related to incorrect wiring. The proper fitment of wire lengths and connectors simplifies installation, reduces repair time, and minimizes the need for modifications to the factory body harness.

For workshops and owners, this translates to a more predictable service process, better compatibility with control modules, and a lower risk of recurring faults due to unprofessional wiring modifications.

Related Products and Technical Knowledge

If you are looking for other components from the Wires, Harnesses, and Connectors category for this brand, check out the Mercedes wires, harnesses, and connectors available in our store to find complete solutions for your car's electrical system.

When planning body repairs after a collision, it is advisable to familiarize yourself with practical tips on selecting used parts – these are discussed in detail in the article Body and Chassis – Collision Repairs Using Used Parts, which helps to better plan the scope of work and select appropriate OEM components.