Ford Transit Custom Rear Tail Light Wiring Harness Cable Right O/S BK21-13404-AG

Ford Transit Custom Rear Tail Light Wiring Harness Cable Right O/S is an original electrical system component designed for the rear right side of the vehicle body. As part of the Wires, harnesses and connectors group, it ensures consistent signal and power routing to components located at the rear of the vehicle. Using this OEM component allows for a technically correct repair without the need for any modifications to the installation.

Specifications and technical data

• SKU: BK21-13404-AG-2
• Mark: Ford
• Condition: Used
• OEM Part Number: BK21-13404-AG
• Substitutable numbers: BK21-13404-AG, BK2113404AG
• Location on the vehicle: Rear, Right
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The described harness is designed to operate in the rear right area of the Ford Transit Custom. It is responsible for organized wire routing and a stable electrical connection between the main installation and the components located at the rear of the vehicle. Thanks to the factory fitment, the correct wire length, proper circuit division, and compatibility with original connectors are maintained.

Construction and technical fitment

The harness belongs to the Wires, harnesses and connectors category, which means it has been constructed to operate in the demanding environment of the vehicle body. It includes a set of wires routed in one organized layout, terminated with connectors matched to the factory sockets in the Ford Transit Custom. The placement of branches and mounting points is consistent with the manufacturer's original design, which facilitates installation and minimizes the risk of wire tension. The vehicle placement specified as rear – right side allows for clear identification of the mounting area. As a result, the harness fits exactly into the space intended by the manufacturer, without the need for shortening, extending, or adapting the wires.

Benefits of using an original harness

Using an original wiring harness in a Ford Transit Custom provides a number of practical benefits:

• maintaining the factory architecture of the electrical system without interfering with the wiring diagram,
• secure fit of connectors to existing sockets and modules,
• organized wire routing in the rear right part of the body,
• reducing the risk of failures resulting from unprofessional installation modifications. For workshops and users, this means faster installation, less susceptibility to errors, and easier diagnostics of potential electrical problems in the future.

Characteristics of the used product

The item comes from dismantling, which allows combining original Ford specifications with a more favorable purchase cost compared to new components. A used harness is a good choice for accident repairs, replacing damaged installations, or restoring the efficiency of a vehicle used intensively in fleet conditions. Thanks to the preservation of the factory layout of wires and connectors, it is possible to restore the original functionality of the installation without compromising compatibility with the vehicle's electronics.

Related products and technical knowledge

If you are planning a comprehensive repair or upgrade of the electrical system zone in your Ford and need other elements from the same group, such as additional harnesses, wires, or connectors, check the available parts in the Ford wires, harnesses and connectors category. If you are interested in a broader context of using used electrical installation components when refreshing older vehicles and youngtimers, it is worth reading an article describing practical modernization scenarios and component selection: The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years.