Audi A4 B8 Estate Tail Light Rear Right O/S Boot Light Wire Harness 8K9945096

Audi A4 B8 Estate Tail Light Rear Right O/S Boot Light Wire Harness is an original electrical system component designed to support the right tail light in the trunk lid. Thanks to the factory connector geometry and proper wire routing, the harness allows for precise restoration of the factory electrical layout, which promotes stable lighting operation. It is a practical solution for post-collision repairs, replacing damaged wiring, or restoring full functionality to the rear of the vehicle body.

Specifications and technical data

• SKU: 8K9945096-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K9945096
• Substitutable numbers: 8K9945096, 8K9 945 096
• Location on the vehicle: Rear, Right
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and function in the vehicle

The presented wire harness is designed for installation in the rear of the vehicle body, on the right side, in the trunk lid of the Audi A4 B8 Estate model. It is responsible for supplying power and control signals to the right trunk lid light, ensuring the correct operation of position lights, brake lights, turn signals, or other functions provided in the specific vehicle configuration. Factory-fit connectors reduce the risk of installation errors and eliminate the need for wiring modifications.

Technical application and benefits of installation

The rear right trunk lid light wire harness is particularly useful in situations where there has been:

• damage to wires due to chafing in the trunk lid grommet,
• corrosion of contacts and connectors after water ingress or long-term operation,
• bodywork and paint repairs after a rear-end collision. Using an original harness allows for restoring stable power supply to the light, minimizing the risk of errors in the lighting control system, and avoiding problems with improper lighting operation. This is the preferred solution wherever compliance with factory electrical documentation and predictable operating parameters are important.

Compatibility with Audi and installation fitment

The component has been designed with the Audi body structure in mind, with appropriately selected wire lengths, harness routing, and placement of mounting points. As a result, the installation process is orderly, and the wires are not exposed to excessive stress or bending during the opening and closing of the trunk lid. Proper vehicle placement (rear, right side) facilitates part identification during repair and reduces the risk of error when selecting the component.

Performance characteristics of the used component

The harness comes from disassembly, which means it is a used part, but one that retains the functionality required for further operation. For many users, this is a reasonable compromise between repair costs and maintaining the original build quality typical of the Audi brand. Choosing this solution allows for an economical repair while maintaining the consistency of the electrical system with other vehicle components.

Knowledge expansion and selection of other components

If you are planning a comprehensive repair or upgrade of the rear lighting zone in your Audi and need other elements from the same group, such as additional harnesses, connectors, or mounting accessories, check the available parts in the Other Audi category. For those interested in a broader look at technical solutions used in the brand's sports variants, including differences in engine construction, braking systems, and chassis, the article Audi RS vs other models – what is hidden under the hood and chassis? may be helpful, allowing for a better understanding of Audi's engineering philosophy and enabling informed component selection for your own car.