Mercedes C117 Door Wiring Harness Anti-Theft Front Left Right N/O/S A1175400805

The Mercedes C117 Door Harness with Anti-theft Protection is an original electrical installation component designed for the front left or right door. Designed by Mercedes, this harness ensures proper communication between body modules and door hardware, supporting the vehicle's comfort and security systems. It is a solution dedicated to precise integration with the factory installation, without the need for modifications.

Specifications and technical data

• SKU: RHD-A1175400805
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1175400805
• Substitutable numbers: A1175400805, A 117 540 08 05
• Location on the vehicle: Front, Left, Right
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Function in the Vehicle

The presented harness belongs to the Cables, Harnesses, and Connectors group and is responsible for the electrical connection between the door and the rest of the body's installation. Its placement in the front door area, on the driver's or passenger's side, allows for functions such as lock control, window operation, mirror adjustment, or anti-theft system components, depending on the specific vehicle configuration.

Thanks to its factory design, the harness maintains the correct length, routing geometry, and connector placement, which reduces the risk of wire strain in the door grommets and promotes stable electrical system operation in the long term.

Construction and Compatibility with Mercedes Installation

As a component developed by the vehicle manufacturer, the door harness is adapted to the electrical architecture of the C117 platform. The connectors used are prepared for cooperation with factory control modules and door-mounted hardware, enabling a near plug-and-play installation within the given generation of the electrical system.

The presence of circuits related to the anti-theft function makes this harness a crucial element for the correct operation of the vehicle's security system. Proper connection and routing of wires are important for both reliability and avoiding diagnostic errors in electronic systems.

Vehicle Placement and Installation Aspects

The harness is designed to operate in the front left or right door area, taking into account the typical movements of the door leaf and the operating conditions within the grommet between the pillar and the door. The appropriate shaping of the wires and mounting points helps to reduce the risk of chafing and damage resulting from frequent opening and closing of the doors.

During installation, it is recommended to maintain the original routing of the harness and to use factory mounting points and brackets. This facilitates later diagnostics and minimizes the possibility of interference in the operation of the body's electrical systems.

Usage Characteristics and Item Condition

The offered door harness is a used market component, allowing for an economical replacement of a damaged section of the installation while maintaining the original manufacturer's construction. For the user, this means the possibility of restoring the correct operation of door and anti-theft systems without the need for aftermarket alternatives of uncertain specifications.

For electrical components, matching the specific vehicle configuration is particularly important. Before purchasing, it is advisable to verify compatibility based on vehicle placement and manufacturer markings to ensure proper cooperation with the existing installation.

Selection Support and Additional Information

If you are planning a comprehensive repair or upgrade of the door installation area in your Mercedes and need other parts from the same group, such as additional harnesses, wire sections, or door connectors, check the available parts in the Mercedes Cables, Harnesses, and Connectors category.

When selecting electrical installation components, it is helpful to use manufacturer markings and vehicle data, such as equipment configuration or model generation. For other brands and powertrains, a detailed discussion on how to select used OEM parts by markings can be found in the article: Audi's Five-Cylinder Engine – A Legend from Quattro to RS3 and How to Care for It with Original Audi Parts.