Audi A5 8t Rear Tail Light Lamp Wire Harness Loom Left Right N/O/S 1K0973804

Audi A5 8t Rear Tail Light Lamp Wire Harness Loom Left Right is an original electrical installation component designed to support the rear lamps in the Audi A5 8T model. Thanks to the factory connector geometry and appropriately selected wire length, it ensures a stable electrical connection and proper lighting operation. It is a practical solution for post-collision repairs, lamp replacements, or damage to the factory wiring harness.

Specifications and technical data

• SKU: 1K0973804
• Mark: Audi
• Condition: Used
• OEM Part Number: 1K0973804
• Substitutable numbers: 1K0973804, 1K0 973 804
• Location on the vehicle: Rear, Right, Left
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and vehicle placement

The presented wiring harness is designed for installation in the rear of the Audi body, supporting both the left and right sides. It is responsible for supplying power and control signals to the rear lamp assemblies, which is crucial for the operation of position lights, brake lights, turn signals, or license plate illumination.

Its placement in the rear area of the vehicle allows this harness to be used for:

• replacing damaged lamp wiring after collisions or bodywork repairs,
• upgrading rear lighting as part of retrofitting,
• diagnosing issues with intermittent or unstable light operation.

Construction and performance parameters

The Audi A5 8t Rear Tail Light Lamp Wire Harness Loom is based on factory connectors matched to lamp sockets and the vehicle's electrical system. The wires used are routed in a way that limits the risk of abrasion and mechanical damage, which promotes trouble-free operation over the long term. The design provides support for both sides of the vehicle, which facilitates fitting during installation and reduces the number of parts needed for repair.

The OEM solution ensures compliance with the factory electrical schematic, which is particularly important when working with control modules and bulb failure monitoring systems. As a result, the harness fits well within the requirements of modern Audi lighting installations.

Service application and installation

The rear lamp wiring harness is suitable for professional service centers and workshops specializing in the Audi brand, as well as for users performing repairs themselves. The used component allows for an economical replacement of damaged wiring while maintaining the vehicle's original specifications.

The main benefits of installation include:

• restoring factory functionality of the rear lamps without the need for installation modifications,
• maintaining compatibility with original lamps and control modules,
• reducing the risk of installation errors compared to universal solutions.

The used condition means the item comes from disassembly, which in practice allows for combining an attractive price with the preservation of the original design intended by the manufacturer.

Why choose an original Audi harness

Using original electrical components in an Audi has a direct impact on reliability and safety. The factory rear lamp wiring harness minimizes the risk of connection problems, contact overheating, or improper light operation that may occur with aftermarket installations. This is especially important in vehicles equipped with extensive diagnostic and lighting control systems.

If you are planning a comprehensive repair or upgrade of the rear electrical system in your Audi and need other elements from the same group, such as additional harnesses, connectors, or adapters, check out 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, including the sporty RS variants, comparative material may be useful. In the context of selecting components such as electrical systems, brakes, or chassis elements, it is worth reading the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses the key differences between standard and sports versions.