Audi A6 C6 A6 4F Rear Light Lamp Tailgate Left N/S Inner Harness Loom 4F9945093B

Audi A6 C6 A6 4F Rear Light Lamp Tailgate Left N/S Inner Harness Loom is a specialized electrical installation component designed to support the inner tail light mounted in the tailgate. Thanks to its factory-fit design for the specific A6 C6 generation, it ensures a proper electrical connection and stable lighting operation. This is a practical solution for post-collision repairs, lamp replacement, or damage to the original wiring harness.

Specifications and technical data

• SKU: 4F9945093B-2
• Mark: Unbranded
• Condition: Used
• OEM Part Number: 4F9945093B
• Substitutable numbers: 4F9945093B, 4F9 945 093 B
• Location on the vehicle: Rear, Left
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and function of the wiring harness

The presented wiring harness is designed for installation in the rear of the vehicle, on the left side, inside the tailgate. It is responsible for transmitting electrical signals between the body wiring and the tail light, enabling the correct operation of position lights, brake lights, or turn signals in accordance with the configuration of the installed lamp.

Thanks to its dedicated shape and properly routed wires, the harness allows for maintaining the correct cable routing path, which reduces the risk of chafing, kinks, and subsequent electrical connectivity issues.

Construction and fitment for Audi A6 C6

The wiring harness has been prepared with the construction of the Audi A6 C6 tailgate in mind, which translates into:

• factory connectors matching the tail light and vehicle installation,
• appropriate wire length adjusted to the geometry of the tailgate,
• the ability to mount in original attachment points and cable routing channels.

Such fitment facilitates service and allows for maintaining electrical system integrity without the need for modifications or soldering additional wire sections.

Application in repairs and diagnostics

The tailgate tail light wiring harness is a component particularly exposed to mechanical damage (frequent opening and closing of the tailgate) as well as the effects of bodywork repairs. Replacing it with a functional unit allows you to:

• resolve issues with intermittently failing rear lighting,
• eliminate lighting system errors appearing in the vehicle's diagnostic system,
• restore full functionality of the lamp after replacing or repairing the tailgate.

This solution is particularly useful in situations where the existing harness has been chafed, has corroded contacts, or was damaged during previous repairs.

Product characteristics and installation

The item comes from the Other group, which means it is a specialized installation component used in a specific area of the body. The product is used, which in practice allows for maintaining the original character of the installation while reducing repair costs. Installation involves replacing the harness in place of the factory one, using existing brackets and grommets in the tailgate.

Before installation, it is recommended to perform a standard check of the connector condition and ensure proper wire routing to avoid excessive tension during tailgate operation.

System expansion and related 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 auxiliary modules, check the available parts in the Other Unbranded category.

For users interested in the differences in construction and equipment of sport versions of Audi, it is worth reading the material discussing the specifics of powertrains, brakes, and chassis in RS models – details can be found in the article Audi RS vs other models – what is hidden under the hood and chassis?.

If you want to better understand the importance of original components in the context of safety and repair durability, the guide Quality assurance and OEM safety – why are used original car parts the best choice for your car?, which discusses practical aspects of choosing parts for daily use, may also be helpful.