Ford Focus Mk3 Rear Tail Light Lamp Wiring Cable Left N/S BM51-13405-AK

The Ford Focus Mk3 Rear Left Tail Light Wiring Harness Cable is an original electrical installation component designed to service the rear left lighting on Ford vehicles. Thanks to its factory-matched connector geometry and appropriately selected wire length, it ensures a secure electrical connection and stable lamp operation under demanding driving conditions. This is a practical solution for repairs after collisions, mechanical damage, or issues with the rear light power supply.

Specifications and technical data

• SKU: BM51-13405-AK-1
• Mark: Ford
• Condition: Used
• OEM Part Number: BM51-13405-AK
• Substitutable numbers: BM51-13405-AK, BM5113405AK, BM51-13405-A, BM51-13405-B
• Location on the vehicle: Rear, Left
• Category: Wiring Harnesses, Cables & Connectors

Vehicle Application and Function

This wiring harness belongs to the Wires, Harnesses, and Connectors category and is designed for the rear left side of the vehicle body. It is responsible for transmitting signals and power between the vehicle's electrical system and the rear lamp, directly impacting the correct operation of the parking lights, brake lights, turn signals, or license plate illumination (depending on the lamp configuration in a specific vehicle).

Its placement on the vehicle's rear left side means the harness is tailored to the specific wire routing in the Ford Focus Mk3, considering factory mounting points and cable routing in the tailgate or fender, which facilitates installation and reduces the risk of insulation abrasion.

Construction and Fit for Ford Focus Mk3

The harness was developed by the manufacturer to ensure compatibility with the original Ford electrical architecture. The connectors used are profiled to fit the factory sockets of the rear lamp and the body's electrical system, allowing for a near plug-and-play installation without the need for modifying the wiring or soldering additional wires.

Key functional features of this harness include:

• dedicated placement in the rear left area of the vehicle,
• compatibility with the Ford Focus Mk3 rear lamp structure,
• preservation of the original wire routing,
• use of original connector types characteristic of the Ford brand.

This ensures the component integrates well with the existing electrical system, minimizing the risk of installation errors.

Application in Repairs and Diagnostics

The rear lamp wiring harness is particularly useful in situations with problems such as intermittent lighting failures, electrical errors in the body control module, signs of overheated contacts, or mechanical damage to wires near the tailgate. Replacing the complete harness instead of making spot repairs allows for a more permanent resolution of faults and restores proper circuit continuity.

This component is also suitable for post-accident repairs where the rear bodywork has been deformed and factory wiring damaged, as well as for reconstructing the electrical system after incorrect modifications made previously.

Characteristics of a Used Part

The offered wiring harness is a used part, sourced from disassembly, which allows for maintaining the original manufacturer's specifications while reducing repair costs. Such components are often chosen by workshops specializing in the Ford brand because they provide factory-matched connectors and wire lengths, while enabling cost-effective restoration of the electrical system.

Before installation, a standard inspection of the insulation condition, contacts, and cleaning of ground points in the vehicle is recommended to fully utilize the harness's potential and avoid voltage drops in the lighting circuit.

Repair Extension and Auxiliary Materials

If you are planning a comprehensive repair or upgrade of the rear lighting area in your Ford and need other parts from the same category, such as additional harnesses, wires, or lamp connectors, check the available parts in the Ford Wires, Harnesses, and Connectors category.

For more extensive bodywork, painting, and electrical work on the rear of the vehicle, a guide describing the selection and installation of used parts may be helpful. You can find it in the article Body and Chassis – Accident Repairs Using Used Parts, which discusses practical procedures and examples of using original used components.