Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Left N/S 8T8971687AA

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Left N/S is an original electrical installation component from the Wires, harnesses and connectors group, designed for installation in the rear left door. The product ensures a proper electrical connection between the door and the body, which translates into stable operation of all supported receivers.

Specifications and technical data

• SKU: 8T8971687AA
• Mark: Audi
• Condition: Used
• OEM Part Number: 8T8971687AA
• Substitutable numbers: 8T8971687AA, 8T8 971 687 AA
• Location on the vehicle: Rear, Left
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function of the wiring harness

The presented wiring harness is dedicated to the rear zone, on the left side, in Audi A5 / S5 8T generation models. It is responsible for transmitting signals and power between the body modules and components located in the door, such as window controls, central locking, or other electrical components provided by the factory in a given vehicle configuration.

Thanks to factory-standard wire routing and appropriately selected connectors, the door wiring maintains the correct layout geometry, which reduces the risk of chafing, insulation damage, and circuit continuity problems during repeated opening and closing of the door.

Construction and fitment for Audi

The wiring harness belongs to the Wires, harnesses and connectors group, which means it was designed as an integral part of the vehicle's electrical installation. The connectors used are factory-matched to the sockets in the door and the pillar, which facilitates installation and minimizes the risk of incorrect connection.

The original door wiring is characterized by consistent wire color coding and a logical branch layout, which facilitates diagnostics and potential service work. Using the correct wiring harness in the rear left door area allows for compliance with Audi service documentation and facilitates subsequent electrical measurements.

Benefits of using an original wiring harness

Using factory wiring in the rear left door provides a number of practical benefits:

• secure fit of wire lengths to the geometry of the door and grommets,
• preservation of the factory connector layout without the need for modifications,
• easier diagnostics of the electrical installation based on manufacturer diagrams,
• reduced risk of failures resulting from improper soldering or custom-made wiring.

For the user, this means stable operation of electrical systems in the door and a reduction in potential communication problems between body modules.

Condition of the item and service application

The offered wiring harness comes from dismantling and is intended for service applications in Audi A5 / S5 8T vehicles where the factory wiring in the rear left door has been damaged. It can be used both for post-collision repairs and for fixing faults resulting from wire chafing in the door grommet.

It is always worth verifying the selection of the correct wiring harness for a specific vehicle configuration against catalog data and manufacturer markings to ensure full compatibility with the equipment of a given unit.

Related items from the same group

If you are planning a comprehensive repair or upgrade of the door zone in your Audi and need other elements from the same group, such as wiring sections, connectors, or complete door harnesses, check the available parts in the Audi Wires, harnesses and connectors category.

If you are considering a choice between a used original part and a replacement and want to know practical selection criteria, the article 5 reasons why a used OEM part is a better choice than a replacement, describing the differences using specific examples from popular models, may be helpful.