Audi A6 C8 Door Wiring Harness Loom Rear Left Right N/O/S 4K5971693AJ

Audi A6 C8 Door Wiring Harness Loom Rear Left Right is an original electrical installation component designed for the rear doors of the Audi A6 C8 generation. Thanks to its factory-fit design and adherence to original wiring geometry, the harness ensures stable electrical connections and proper operation with comfort modules and other body systems. It is a practical solution for replacing damaged door wiring following a collision, water damage, or mechanical failure.

Specifications and technical data

• SKU: 4K5971693AJ
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K59716931AJ
• Substitutable numbers: 4K59716931AJ, 4K5 971 693 1A, 4K5 971 693 AK, 4K5971693AK
• Location on the vehicle: Rear, Right, Left
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and vehicle placement

The presented wiring harness is intended for installation in the rear left and right doors of the Audi A6 C8. It is responsible for transmitting signals and power between the body and the doors, enabling the proper operation of components such as actuators, window regulators, locks, or door lighting – depending on the specific vehicle configuration.

Its placement in the rear part of the body means the harness is adapted to operate in an area subject to frequent door opening and closing movements, which is why it is crucial to use an original cable with the appropriate flexibility and mechanical resistance. Replacing it with an OEM component allows for maintaining factory cable routing and minimizes the risk of abrasion and circuit breaks.

Technical specifications and compatibility

The harness has been designed specifically for the Audi A6 C8 platform, which translates into the correct cable length, proper connector layout, and compatibility with factory electronic modules. The connectors used are prepared for direct connection to the vehicle's installation, without the need to modify the factory harness or use additional adapters.

As a result, the installation process is similar to the manufacturer's service procedures, and the entire system maintains electrical and logical consistency with the rest of the vehicle. This is particularly important in modern vehicles, where communication between modules occurs via digital buses and requires maintaining appropriate connection quality.

Condition, origin, and benefits of using a pre-owned part

The item comes from disassembly and is offered as a used part, which represents a reasonable compromise between repair costs and maintaining original OEM quality. Door harnesses, when used correctly, are not components that wear out quickly, which is why using a verified pre-owned part is a frequently chosen solution in professional workshops and by informed users.

Using an original aftermarket harness allows you to avoid problems typical of low-quality replacements, such as mismatched connectors, incorrect wire gauge, or lack of compatibility with factory mounting brackets. This translates into stable electrical system operation and reduces the risk of future faults resulting from improper fitment.

Installation and service application

Replacing the wiring harness in the rear doors of an Audi A6 C8 is a standard service operation performed after mechanical damage, connector corrosion, or interference with the installation (e.g., after unprofessional installation of additional accessories). Using a factory harness allows for restoring the original cable routing and proper placement in the grommets between the pillar and the door.

During installation, it is recommended to:

• carefully compare the connector configuration with the existing installation,
• check the condition of rubber grommets and mounting points,
• verify circuit continuity after completing the installation.

This approach helps reduce diagnostic time after repair and ensures reliable operation of comfort systems in the rear part of the vehicle.

Configuration expansion and selection of other components

The door wiring harness is often replaced together with other rear body components – locks, actuators, control modules, or lighting elements. If you are planning a comprehensive repair or upgrade of the rear door area in your Audi and need other parts from the same group, such as additional cables, connectors, or modules mounted in the doors, check the available parts in the Other Audi category.

Technical support and knowledge about Audi models

For users interested in a deeper understanding of the structural differences between individual model lines from the manufacturer, including solutions used in powertrains and chassis, an article comparing sports versions with standard variants may be helpful. More information can be found in the material: Audi RS vs other models – what is hidden under the hood and chassis?.

Summary

Audi A6 C8 Door Wiring Harness Loom Rear Left Right is a practical service solution for owners and workshops dealing with electrical system repairs in the rear body area. Its original design, fitment for the specific model, and potential for direct installation make it a functional choice for replacing a damaged door harness and restoring full functionality of comfort systems in the Audi A6 C8.