Audi Q3 RSQ3 F3 Rear Tail Light Wiring Cable Plug Outer Left N/S 83A945091B

Audi Q3 RSQ3 F3 Rear Tail Light Wiring Cable Plug Outer Left N/S is an original electrical system component designed for precise operation of the rear lighting on the left side of the vehicle. Thanks to its factory design, the wiring harness ensures a stable electrical connection between the light and the car's installation, supporting the correct operation of position lights, brake lights, and turn signals. It is a practical solution for users who want to restore full lighting functionality in their Audi Q3 or RSQ3 F3 after bodywork repairs or a collision.

Specifications and technical data

• SKU: 83A945091B-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 83A945091B
• Substitutable numbers: 83A945091B, 83A 945 091 B
• Location on the vehicle: Rear, Left
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and vehicle placement

The presented wiring harness belongs to the Wires, harnesses, and connectors group and is intended for installation in the rear part of the vehicle, on the left side. It is responsible for supplying power and control signals to the outer tail light, which is crucial for safety and compliance with traffic regulations. The placement on the vehicle has been factory-optimized for cable routing, stress minimization, and protection against mechanical damage.

Construction and technical function

The wiring harness was designed by the Audi brand as an electrical system component dedicated to the specific Q3 / RSQ3 F3 body generation. The cables and connectors used are matched to the vehicle's installation parameters, which allows for:

• reliable signal transmission to all sections of the tail light,
• maintaining appropriate resistance and connection stability,
• reducing the risk of errors in lighting control systems.

Such a solution facilitates diagnostics and service, as the layout of wires and connectors corresponds to Audi's factory electrical diagrams.

Benefits of using an original wiring harness

Using an original tail light wiring harness in an Audi Q3 RSQ3 F3 brings a number of practical benefits in daily operation:

• Compatibility with the vehicle's installation – matched connectors and cable lengths facilitate installation without modifications.
• Reduction of lighting error issues in onboard systems.
• Maintaining the consistency of the electrical system with the manufacturer's factory standards.
• Ability to use existing mounting points and cable routing in the body.

Thanks to this, the wiring harness is particularly useful for repairs after rear vehicle damage, where it is necessary to replace electrical components without interfering with the main installation.

Condition and service application

The item comes from disassembly and is offered as a used wiring harness, which allows for an economical repair while maintaining the original Audi specification. This type of solution is often chosen by workshops specializing in the brand and by conscious users who prefer OEM parts from the secondary market over universal replacements. The harness will work well both when replacing a damaged section of the installation and when completing a tail light after replacing the body panel or trunk lid.

Expanding the Audi electrical system

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 cable sections, check out the available parts in the Audi wires, harnesses, and connectors category.

For drivers interested in a broader approach to vehicle service, including optimizing repair costs, practical tips on using components from disassembly may be useful – you can find them in the article Suspension knocking? Discover a clever way to restore factory handling precision without spending a fortune at the service center.